Showing posts with label electric power system. Show all posts
Showing posts with label electric power system. Show all posts

Saturday, August 30, 2025

IEC 61850 in Cyber Secure Environments - New Comprehensive Seminar

Due to my family situation (nursing my beloved wife from 2017 to 2022) I had to slow down my training activities. This year I was asked by several senior experts if it would be possible to resume the training.

As a result of discussions with friends of mine, we updated our previous course program and offer a brand new 5-day comprehensive public seminar for Automation, Protection, Monitoring, Engineering, Configuration (SCL), SCADA, Smart Grids, RTU, Gateways, … cyber physical security in electrical systems of any industrial plant … it is available for you and your people.

The reason for the update: We want to do more than teaching the theory of IEC 6850 and demonstrate single IEDs … we want to let our practice talk for your practice. The new training will start in March 2026. Taking the experience with many crucial applications of IEC 61850 into account we offer a new program for a 5-day course conducted by four (4) real experts.

09.-13. March 2026, Karlsruhe (Germany)
21.-25. September 2026, Karlsruhe (Germany)

Click HERE for more details on dates, location, and registration information.

Saturday, March 29, 2025

40 Years Ago I Started Contributing To The MAP/MMS Standardization In Detroit (MI)

I have contributed to the MAP/MMS Standardization (Manufacturing Automation Protocols/Manufacturing Message Specification) from the very beginning. I was working for Siemens in the group dealing with communication solutions for process control and factory automation. In February 1985 I attended the first time a meeting of the MAP project at the GM TechCenter in Warren (Michigan, USA). As you can see, the first day was a very cold day (1985-02-14) with a lot of fresh snow:

I looked still young (40 years younger than today) ... 32 years old and father of four children.


The approach of MAP/MMS was very new ... even today a lot of people have difficulties with MMS ... especially because of using ASN.1 BER as the encoding notation for all messages exchanged according to IEC 61850 - Client/Server and Publisher/Subscriber messages!!

In 1993 I got also involved in the new IEC TC 57 project TASE.2 (Telecontrol Application Service Element 2) based on MMS ... called ICCP (Intercontrol Center Communication Protocol):

I attended the following meeting in Loveland (Colorado, USA):

30 years ago (March 1995) the IEC TC 57 decided to start a new project: IEC 61850 based on the EPRI UCA 2.0 Specification ... also using MMS/ASN.1/BER ... I got involved in UCA and IEC 61850 starting with the second IEC TC 57 WG 10 meeting end of 1995.

Many people in the electrical power world have complained since then that MMS/ASN.1/BER is toooo ... too much of ... and as a result many have departed from the approach.

I have suggested many times to use web services ... JSON encoding instead of ASN.1/BER and XML ... most people ignored the use of web services ... I guess it will come in the near future.

In many of the following standardization groups I have supported modern communication approaches ... in some cases it took some time ... or still is awaiting for a push:




Saturday, August 12, 2023

IEC CDV files available for Public Commenting - circulation date 2023-08-11

 Dear Friends of IEC standards, I just remember you that IEC lets you comment on published CDVs (Committe Draft for Vote) ... 

Click HERE for general rules, :

IEC Public Commenting

Help shape international standards if you have the requisite technical expertise. Public commenting on draft IEC Standards is open for a two month period

Currently the following IEC 61850 document is open for comments ... you have to login with your IEC account or register for an account:

57/2602/CDV 

IEC 61850-6/AMD2 ED2: Amendment 2 -
Communication networks and systems for power utility automation -
Part 6: Configuration description language for communication in electrical substations related to IEDs 

CLOSING DATE FOR VOTING: 2023-11-03

Please take your time to review the document ... You may agree with me that part 6 (SCL) is a crucial part of the series IEC 61850!

Thursday, January 20, 2022

How To Bring Plant Engineers To The Table When Cyber Issues Are Discussed?

In my career as electrical and IT engineer I have experienced that engineers are quite often not invited to discuss the measures and plans for critical infrastructure protection with IT personnel.

It is completely different compared to the world of electric power system protection - I mean the applications of protection relays. Protection engineers are (in my understanding) the most crucial engineers. They are very important for the reliable delivery of electric power. Protection engineers are likely to attend any meeting when it comes to the reliability of the power flows. Protection engineers know what to do ... software people may help to implement the "what" and the IT personnel may help to solve the communication issues ... but the crucial parts are dominated by protection engineers!

Mr. Vytautas Butrimas, a globally well known engineer involved in cyber security of control systems has briefly discussed the "Berlin wall" between IT personnel and plant engineers.  

Click HERE for the four page paper written by Mr. Butrimas.

Either of the groups involved believes that his or her group is the center of universe. There is little communication between the IT personnel and the engineers. 

There are so many semipermeable walls between, e.g., politicians, company lawyers, economists, IT experts, and plant engineers. There is usually no way that experts from any layer are allowed to talk to the experts from the other layers. In the end: Each layer feels independent of the other layers ... which leads to what we see these days ... and may be even more in the future. Have you heard of a discussion between a power protection engineer and a lawyer or even a medical doctor?

It would help medical doctors to understand the basics of electric power system reliability ... and so on. Because medical doctors (and all other people of a society) depend 100% on available power.

So in the end: (Electrical) Engineers should be honored by the society ... the problem may be that the engineers are not wearing white coats but wear safety boots, safety helmets, goggles,  protective gloves, ... a single doctor may harm a few people ... a protection engineer may harm millions of people during a blackout caused by a misconfiguration of protection equipment.

Wednesday, December 1, 2021

Just published: IEC 61850-7-420 Basic Communication Structure – Distributed Energy Resources And Distribution Automation Logical Lodes

IEC TC 57 just published one of the most crucial parts of the standard series IEC 61850:

This second edition of the 548 pages long bilingual standard (EN/FR) has been developed over a period of - I guess more than 10 years - taking into account the experience with IEC 61850 in general and with distributed power systems.

Now it is time to implement and use the standard in conjunction with the other core parts like IEC 61850-6, 7-1, -7-2, -7-3, and 7-4.

Click HERE for details on IEC 61850-7-420.

Click HERE for the preview.

Please note that the syntax of the object models is available for free download:

Click HERE for the download of the light name space document [zip, 30 KB] 

Excerpt of the light name space:

Sample code for Battery Monitoring LN with Cell Voltage Lo Alarm and Hi Alarm:

Note that the description (Semantic) is only available in the Full name space document that comes with the standard when you buy the standard.

It is recommended to purchase the standard in case you want to study the full content and to figure out the benefit ...!

Wednesday, October 27, 2021

Power Outage In Frankfurt Area (Germany) - And People That Need A Breathing Ventilator

I just read that in the western part of the city Frankfurt (Main, Germany) the electric power was down for more than 10,000 customers. A current transformer (CT, for measuring the current) blow up ... and produced a lot of smoke. The power went off from 17:15 on Tuesday 2021-10-26. The restoration took some eight hours!

The Hessenschau (de) reported that nine (9!) people that depend on breathing ventilators had been hospitalized. This critical situation tells us, that the ventilators did likely not have battery backup power - either in the devices or external. The devices we use for my wife have both two internal batteries which give (rated!) power for 16 hours for each device.

This brings two questions up in my mind:

  1. Why is it not required by law that all breathing ventilators have battery power for at least 24 hours?
  2. Why don't we have to have external batteries and inverters that would give power for several days?

Instead of bringing patients with the ambulances to the hospital, it would be much easier (faster and cheaper) to bring an emergency power supply package (batterie plus inverter) to the patients! Or?

There seems to be a wide area of improving the quality of life.

By the way, why did the CT (current transformer) crash? Was it too old or not ... or? I hope that my friend Andrea Bonetti (one of the most experienced protection engineers on this planet) will comment on the importance of CTs!

Any comment?

Add on (2021-10-30): 

First: The utility has told that more than 100 workers are involved in fixing the problem ... the current fix is provisionary only! 100+ workers means: It must be a big problem that needs so many people to fix. 

Second: It was reported that in an elderly care home the nurses had to use their mobile phone's flash light to look for the elderly people ... no emergency light! Hmm ... strange. A few 12V batteries and some 12V LEDs would have done a good job! Cheap and useful ... lifesaving! ... if somebody would care for their maintenance. The management has obviously decided to purchase a hand lamp per floor ... 👍 something is better than nothing. Note: A battery leak (AA or AAA batteries) may damage a flash light that is not used often ... or only in case of emergency. Non leaking batteries are available: Lithium Batteries are the right choice for emergency devices. I have replaced the typical AA and AAA batteries with Lithium batteries for all flashlights and outdoor devices like thermometer ... they withstand cold weather and do not leak ... life time likely 10+ years ...

Click HERE for the extended Hessenschau (de) report.

Sunday, October 24, 2021

Some Information About My Personal Situation

You may be surprised about the fact that I posted very few information on this blog for some time. Let me explain our family situation here at home. I received an email today from a colleague and follower of this blog. This email encouraged me to publish excerpts from the emails we exchanged and to add some thoughts at the end of this post:

Email I received on 2021-10-16:

"Dear Karlheinz,

Perhaps you remember me, I've long been a keen follower of your blog on IEC 61850, and we have exchanged e-mails a few times in the past. ... I am writing to you because 

I remain looking forward to any news from you ... Kind Regards ..."

Email I sent on 2021-10-16:

"Dear ...,

I am sorry to read these lines ... 

I have changed my work (now being retired) to nurse my wife 24/7 … she was diagnosed ALS in January 2017. We are happy that the Lord Jesus has helped us to do that work together with one of our daughters. My wife needs non-invasive ventilation around the clock … we are still together … which is very good.

So, as a consequence I have more or less stopped my business …

Have a great weekend!

Best Regards,
Karlheinz"

Email I received on 2021-10-24:

"Dear Karlheinz,

I am very sorry to learn that you stopped your business because your wife is seriously ill.

To be honest I had realized that the frequency of your posts had declined in the last months... Your blog was a wonderful source of information and it will be missed by the smart grid community. Your posts were real, technical, relevant, useful stuff and not the usual buzzword-laden, over-hyped bullshit we are all used to read these days.

Given the circumstances, I believe no one will say you didn't do what was your duty.

I wish all the best to you and your family."

Some Thoughts to think about:

  • Have you ever thought about the electric power in your personal life or the life of the people around you 👪?

  • What could we do to help keeping the power flow? It is more than IEC 61850 ... 

  • Smart(er) Grids are nice ... more important is the need for power in situations where the public grid is down ... In our case we need power for the breathing ventilator 24/7, power for the lifter to lift my wife from chair to wheel chair ... to bed ... power for the nursing bed (move it up and down), power for light, power for heating and cooking, ... and so on. It is more than emergency power ... we need at least some power 24/7 ... we use just PV, batteries and inverters, ... 

  • Did you know that (in Germany) we had in 2019 some 4,100,000 care-dependent people that needed nursing ... 3,310,000 nursed at home (usually in families), 818,000 in nursing homes, ... even in nursing homes it is not required to have emergency power !! ... some have. What about the many homes that need electric power 24/7 to survive ... I guess most of them believe that there is always power ... except for a few minutes per year ... 
    Click HERE for the source of the German nursing situation.

  • One of the most crucial challenges in the future is to provide permanent available power to those homes that nurse people ... 

  • Try to contact your neighborhood, your police station, nearby hospital, fire station, power utility, ... to figure out how and where you could get power to operate the breathing ventilator or other medical devices in case of a blackout! You may be surprised what you get ... almost nothing.

  • It seems to be more important (or interesting) to install hundreds of super charger stations along the German Autobahn ... than to care about a minimum of power to help care-dependent people to survive.

  • We need all-over more electric storages ... small and big ones ... for various applications ... in order to have electric power whenever and wherever we need some ...

  • Let me know what you think ... or report about your experiences ... Thanks.


Monday, November 9, 2020

Hybrid Warfare Against Critical Energy Infrastructure: The Case Of Ukraine

A new 175 pages report
"Hybrid warfare against Critical Energy Infrastructure: The Case of Ukraine"
has just been published.

This study identifies and analyses the success of different hybrid warfare tools used by Russia in the Ukrainian energy sector between 2014 and 2017, namely different types of malicious acts against critical energy infrastructure, the implication of these events for Ukraine and the lessons to be learned for NATO security.

Click HERE for the full report [pdf, 6 MB]

Thursday, March 5, 2020

IEC 61850 und eCl@ss - Interoperabilität durch standardisierte Informationsmodelle

Interoperabilität durch standardisierte Informationsmodelle

Der „eCl@ss“-Standard ermöglicht den digitalen Austausch von Produktstammdaten über Branchen, Länder, Sprachen oder Organisationen hinweg. Wie ein Produkt nach „eCl@ss“ mit Merkmalen nach IEC 61850 ganzheitlich zur Interoperabilität auf den Ebenen Produktbeschreibung, Systemengineering, Gerätekonfiguration, Informationsaustausch und Protokolle ergänzt werden kann, zeigt der nachfolgende (frei herunterladbare 5-seitige) Beitrag im etz Heft 12/2019 (Link siehe unten):



Hier klicken, um das gesamte etz Heft 12/2019 inklusive des obigen Beitrags (Seiten 30-35) herunterzuladen. 

Tuesday, July 11, 2017

Interactive Information about German Power Generation, Load and Export/Import

The German regulator of the electric power network has just opened a new website which gives you a deep inside view in power generation, load and export/import.



Graph from the new website.
Click HERE to access the new website.
Enjoy.
This is a very interesting service ... to see what's going on.

Wednesday, March 1, 2017

IEC TC 57 and WG 10 in Figures

IEC TC 57 Working Group 10 "Power system IED communication and associated data models" met last week in Geneva (Switzerland) at the IEC central office.
Mr. Charles Jacquemart (IEC Technical Officer) presented some very interesting figures about the TC 57 and especially WG 10. The following slides are published here with the permission of Mr. Jacquemart.

TC 57 History:


Crucial Publications:






Various TC 57 Working Groups (250 members in WG 10!!):



IEC TC 57 WG 10 is the LARGEST WG in the whole IEC!!



Sales of IEC 61850 standards:



You are right, IEC 61850 is one of the most crucial standard series in IEC and also in the market of power systems!
More to come!

Saturday, December 10, 2016

OpenGridMap - Help to collect data and produce power grid approximations for CIM


OpenGridMap is a new open community that crowdsources realistic power grid data to be used for research purposes. Here you will find the tools for crowdsourcing power grid data. The goal is to create an open platform for inferring realistic power grids based on actual data. Our vision is to provide a tool to researchers and practitioners that is able to produce realistic input data for simulation studies. OpenGridMap will support the entire process from data collection to formatting grid data for various purposes. We explore innovative ways to capture data and produce power grid approximations, e.g., using smartphone apps, drones, expert classification, existing map APIs, and graph inference algorithms.

Click HERE to visit the OpenGridMap website.

The next step would be to convert the collected data into a CIM and SCL format ... it is underway for CIM (Common Information Model):

OpenGridMap: towards automatic power grid simulation model generation from crowdsourced data
By Jose Rivera, Technische Universität München

"OpenGridMap is an open source project that crowdsources realistic power grid data to be used for research purposes. In this paper, we propose an approach for the automatic generation of power gird simulation models from crowdsourced data. The proposed approach orders the crowdsourced data into a power circuit relation which is then used to produce a CIM description file and subsequently a power grid simulation model. ..." ... and I guess the modelling in IEC 61850-6 SCL (System Configuration Language) will follow soon - I am sure.

Click HERE for the above mentioned paper.

More to come as discussed during the Training Courses conducted by NettedAutomation this week in Karlsruhe:

Thursday, August 4, 2016

What is a Critical Infrastructure?


According to Wikipedia:
"Critical infrastructure is a term used by governments to describe assets that are essential for the functioning of a society and economy - the infrastructure."

The first three infrastructures listed are:
  1. electricity generation, transmission and distribution;
  2. gas production, transport and distribution;
  3. oil and oil products production, transport and distribution;
  4. ...
Many other areas could be taken into account - all domains where we have some automation in one form or another you may or may NOT TRUST. So far we have trusted our teachers, our employers, our parents, our car, our friends, our banks, our electric power delivery system ... There seems to be a change coming step by step.
What could we all do about it? 
For our family we have just decided to install a 9,8 kWp Photo Voltaic system on our roof. This is - hopefully - a power harvesting machine we could trust ... as long as the sun is shining.
The latest issue discussed is on "Election Systems" according to the FederalNewsRadio:
"The Homeland Security Department is actively considering whether it should add the nation’s election system — or the individual systems that 9,000 local and state jurisdictions use to collect, tally and report votes — as an entity that needs DHS protection from cybersecurity attacks."

What if we put it all under the new term "Critical Everything" (CE)?
All depends on human beings we have to trust! I want to be such a person - my wife, my family, our friends, you, ... can trust.

When we engineers develop something, we should pay a lot of attention to make the "something" robust, safe, ... better safe than sorry.

Let's do our best in the interest of all our societies.

Wednesday, January 6, 2016

Want to Understand one of the Largest Machines - The Interconnected European Electric Power Grid?


The Interconnected European Electric Power Grid is one of the biggest machines built by humans. It has been developed over a period of about some 130 years. It is a miracle that it is still working very stable and more or less uninterrupted form many years.

The challenge for the future is this: How to keep the power flowing, the grass green and the sky blue. I met with a retired - but still very active - power engineer yesterday. We discussed how more information technologies can be used to support a very reliable automation system to provide 24x7 power flow all over in Europe. We have figured out that one of the key challenges in the discussions is to find the correct language in our discussions. I mean: When I talk about preventing any "remote control command", what does the recipient of that term understand? We figured out that we have discussed this term for years - but did have a different understanding in mind!

Fortunately we solved our disconnect and were happy that we have the same understanding. We will use a new (or just another) terms to make sure that other people will understand what we want to say.

A "remote control command" an mean:


  1. Switch on the electric heater of heat storage system  or
  2. Allow the local controller of the heat storage system to draw electric power when the local controller sees a need to heat the storage.

In the first case the electric power will immediately flow. In the second, it may or may not - depending on the local situation. Not all heater will start immediately at the same time to heat.

In case we use the term "remote control command" for the first application only, we will not be understood by many people. Because - I guess - most people would say: In both use cases we send a "remote control command" to the remote system.

What is the real underlying difference of the two use cases? The first one has a direct impact on the power flow, while in the second there is a local control system involved to decide what to do. Let´s assume we have 1000 heaters of a total power of 10 MW. In the first use case we have an immediate power flow rate of 10 MW per a few seconds. In the second case it is a stochastic situation where some may immediately draw the power others may draw power one hour later ...

Finally: If we would have smart systems, then the local controller would be situationell aware of the condition of the power system: if the frequency or voltage would be below specific set-points, then they would not draw power at all ...

If you would like to learn more about the huge machine "Interconnected Electric Power Delivery System":

Click HERE to watch a video [with English translation] which discusses some basics of the complexity ... enjoy.
Click HERE for the version in German.
Click HERE for more options.


Thursday, September 15, 2011

IEC 61850 knowledge required for many new Jobs all over

Nine positions in Germany are open for engineers [today: 2011-09-15] with IEC 61850 (and partly with DNP) background according to the website Simplyhired!

Click HERE for the list of positions in Germany.

And in North America? The website links to 107 open positions within North America [today: 2011-09-15] !!! Yes!

Click HERE for the list in the USA.

11 new positions have been added the last 7 days [today: 2011-09-15]:

Click HERE for the list of that last 7 days.

Good luck if you are looking for a job where you can use your IEC 61850 experience and knowledge.

IEC 61850 and DNP3 applications are picking up!

Thursday, September 8, 2011

110 Young People attended the Shanghai IEC 61850 and IEC 61400-25 Workshop

The workshop on IEC 61850 and IEC 61400-25 organized by the State Energy Smart Grid R&D Center (Shanghai) hosted at Shanghai Jiao Tong University on Monday, 05 September 2011, was very successful.

The 110 young attendees from 37 organizations came to the event to get up-to-date information about the standards, market acceptance, challenges with the new standards, experience, and implementation hints.

One of the students of the workshop and the teacher at the entrance:

1_Shanghai_IEC61850-and-61400-25-Workshop_2011-09-05

The 110 attendees (mostly young people):

2_Shanghai_IEC61850-and-61400-25-Workshop_2011-09-05

Professor Peichao Zhang and his colleague Professor Dong Liu organized the event:

3_Shanghai_IEC61850-and-61400-25-Workshop_2011-09-05

Click HERE for the program of the event.

According to a report given during the IEC TC 57 Plenary meeting in Shanghai (6.-7. September 2011), one substation per day and one wind power turbine per hour are installed in China. So, there is a huge demand for solutions according to IEC 61850 and IEC 61400-25.

The young people are eager to learn how to use the standards for the various products and applications. The workshop has helped them a lot to get the basics of the standard.

Thursday, August 18, 2011

IEC 61850 for Substations Only?

The title and scope of IEC 61850 was for many years very restricted:

2001 – 2009: Communication networks and systems in substations

2010 – … : Communication networks and systems for power utility automation

The new title and scope is still too restrictive! The working group wanted to change to “… for automation”. This was not accepted by the IEC Central Office. IEC deals with electro-technical matters. The term “automation” was understood as to broad.

From a content point of view IEC 61850 could be used all over where measurements and status information needs to be communicated – in any application domain. Even if you are just monitoring a process or system (no control need) you can use IEC 61850 models, messages and configuration tools.

The Model “STMP” (temperature supervision logical node) can be used wherever a temperature measurement is taken: Temperature of a transformer, of a room, ambient temperature or your body temperature. When the “STMP.Tmp.mag” value reached the configured limit (Alarm limit or Trip limit) an report or a GOOSE message may be issued.

By the way, IEC 61850 has rules how to define extended logical nodes and data objects. All values can be communicated the Ethernet and TCP/IP based information exchange methods.

Experts pointing to the scope “substations” are not up-to-date. Those arguing that IEC 61850 is for “power utility automation” only may not like to accept that IEC 61850 is very generic or common – applicable in a wide range of applications.

The title and scope are just “toner on paper”.

Progress in Smart Grid Deployment – Too slow?

Many people all over expect that the Electric Power Delivery system will be changed to become smarter over night. A system that has been build over a period of 20, 50, …. 100+ years cannot be changed in short time! The change is likely to occur in steps over several decades – may be for ever.

Peter Fox Penner (US consultant) has summarized what is going on in the process of change. He concludes: “… Taken together, the trends discussed here show that the smart grid is expanding and developing, even if the most successful entities and programs are surprising. More importantly, these trends illustrate the evolutionary nature of smart grid development. Arguments that the smart grid is moving too slowly underestimate the scale and complexity of rebuilding our entire grid. Utilities are tasked with deploying a complex series of infrastructure investments that must work in harmony with their current (already smart) systems, use innovative pricing that customers support, and produce a net benefit. Under these conditions, slow and steady wins the race. We can expect smart grid development to occur in stages over decades, ultimately transforming the power industry into a very different business.”

Click HERE for his report in the IEEE Smart Grid Newsletter.

When we talk about the pace of change in the information technology in industrial automation we should not get nervous when we see the slow progress! How long did it take to get Gigabit/s Ethernet for substation environments developed … and accepted!? New approaches in Automation take often decades before they are accepted and used.

Click HERE for a brief discussion on Ethernet and Tokenbus … written decades ago.

The future for standards is quite bright. When a utility decides to deploy information technology for the next 10 or 20 years it will likely chose a stable standard – so that there is no need to change the solution every 4 or 5 years … when manufacturers have developed a new solution.

MMS (Manufacturing Message Specification, ISO 9506, used in IEC 61850-8-1 to define the message encoding) has been developed in the late eighties (80s !) – some 25 years ago. Web services are understood by some people as an option for messaging – more up-to-date. I have seen a Report message of a simple state change message using IEC 61400-25-2 Web Services the other day. The length of the XML coded Report message was some 850 octets !! A Report message encoded with MMS/ASN.1 BER (as per IEC 61850-8-1) is really shorter: by a factor of about 10 !!

Don’t hurry. Take your time. Rome hasn’t be built over night!

I usually sate in my seminars that the deployment of IEC 61850 happens too fast – users often do not have any clue what they got installed. They got it because it was cheaper than xyz. All in a sudden they have several substations with hundreds of IEDs communicating with IEC 61850 – and many (may be almost all) utility engineers have to struggle with this new way to do protection and automation. Many of them have started to get training in IEC 61850 … and you?

Don’t start slow and slow down fast ;-)

Just start – there is something to learn!

Tuesday, August 9, 2011

Germany Increases Energy Research by 75 percent to 3.5 Billion Euros

The German government announced the other day that it will spend much more research money into the development of a clean energy delivery system. The government will spend 3.500.000.000 Euros ($4.9 billion) into research for renewable generation, higher energy efficiency, energy storage and grid-technology in the next three years (2011-2014).

Click HERE for the press release [in German only]

It is very likely that a reasonable part of this money will be spend for the IT infrastructure needed for the many applications of future power delivery system. There are at least two stable solutions that have to be taken into account: (1) the electrical system (A.C. and D.C.) and (2) the IP infrastructure. The future power system will be based on these corner stones. The electrical system will be supported by myriads of new intelligent controllers of the power resources (renewable, storage, …) and new controllers of the grid (transmission and distribution) – and many of the controllers need to work (communicate over Ethernet and TCP/IP) together and being supervised by other controllers, which are part of the overall control of the power system …

The international standard series IEC 61850, IEC 61400-25, IEC 61968/70 (CIM), IEC 60870-6 (ICCP), … are here to help that the dream of the German government becomes true. Without these standards, the future power delivery system would be a nightmare with hundreds of proprietary communication solutions.

Many more companies in Germany and Europe are starting to put their hands on the standards IEC 61850 and IEC 61400-25 to be prepared for the future power delivery system in 2011. More than 20 companies will have received an in-house course on IEC 61850 and other IEC standards by Karlheinz Schwarz by end of 2011, and he will have run about an additional 10 public courses this year.

There is a lot to be done – let’s get started or continue dealing with the IT infrastructure using IEC standards.

Of course: The IT infrastructure is just a vehicle for the future power delivery system. There is much more to do than to communicate. By applying already available standards it saves a lot of R&D money that should better be spend on questions like, “What does demand response really mean?”

Click HERE for a nice paper that discusses questions like: “What happens with the electrical system if a huge number of customers start their dishwashers, washing machines, stoves, AC, … at the same time after a real-time price information has been received by the consumers?” Could they behave in a way to cause power outages? May be …

Wednesday, July 27, 2011

Hannover (Germany) Black Out Caused by Aging Infrastructure

Some 600,000 people of the city of Hannover (Northern Germany) were hit by a blackout (up to 81 minutes) on July 13, 2011.

First a power plant was tripped due to some internal problems. Then it was expected that a 220 kV / 110 kV transformer substation would transform more power from the 220 kV network into the 110 kV network – this would have balanced the load in the city and provided power from outside.

The transformer was protected by protection functions that prevent overloading (overheating) the transformer – in order to not damage the transformer windings by too high temperatures … Due to the increase of power flow after the power plant outage in the city, the protection tripped, because it decided that the flow was above the configured limit. The limit was correctly set – but a capacitor (worth a few Euro) was defect and the result was that the protection tripped the circuit breaker even at a current below the configured limit! It would be interesting to know how old the protection relay was.

Due to the aging of the hardware (capacitor) it happened in Hannover recently. What city or region will be next hit by the aging infrastructure of our electrical delivery system?

More to come.

More maintenance (as decided by the utility in Hannover) is not an anti-aging means – refurbishment of aged components of the infrastructures may help … but costs a lot of money.

Click HERE for the press release of the enercity utility of Hannover [German only].
Click HERE for a discussion of aging infrastructures [German only]