March 2015 Issue
This is because the electric power system itself did not change that much - large synchronous machines in power plants connected to the transmission grid and radial distribution systems connected through substations to the transmission lines.   We know how to deal with this, because we have been doing it for more than a century. We know how to calculate the fault current contribut... More


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Industry News

Alstom Grid

Next Generation Digital Substation 2.0 Smart Substation Turnkey Solutions Digital Substation 2.0 delivers maximum safety to personnel, advanced software applications and reduces equipment footprints.  At its heart is DS Agile, Alstom’s digital control system for electrical substations, now improved with the new DS Agile VUE user interface supporting advanced situational aware... More

Electrocon International

Announces CAPE 14 Protection Software Electrocon International, the full - service developer and marketer of CAPE software for protection system simulation and data management, announced that CAPE 14 has been released for sale. CAPE offers extensive tools for detailed relay modeling that help engineers manage voluminous and complex network data, uncover potential problems, and examine alt... More

IEC TC 57 WG 17 Meeting

Golden, Colorado, USA IEC Technical Committee 57 Power systems management and associated information exchange has several active working groups focused on different domains of the electric power system. Working Group (WG) 17 is responsible for “Communications Systems for Distributed Energy Resources (DER)” and plays an important role in supporting their integration in protect... More

NR Electric

Released PCS-9799 Station Manager NR Electric released the PCS-9799 station manager for signal mapping between protection and control IEDs.  It is suitable for industrial or utility substations and higher-level systems such as Control Centers or Distributed Control Systems. The PCS-9799 Station Manager offers multiple substation management functions. It acquires information in the whol... More


Efficient busbar protection commissioning RelaySimTest is OMICRON´s unique software for simulation-based and distributed protection testing for use with one or more CMC test sets. For the first time, an Iterative Closed Loop approach can be used to test a busbar protection scheme logic with this product. Proper functioning and the correct installation of the protection system are ensure... More

Schneider Electric

MiCOM Px11 becomes VAMP 11 series Schneider Electric announces a significant makeover of MiCOM Px11 relays as VAMP 11 series with the launch of VAMP 11V. VAMP 11 will be based on the enhanced Px11 platform, and will offer in the coming months, feeder, motor and voltage & frequency protection applications for certain MV Distribution & Industry markets.       ... More


Safety Test Switch brings test access into 2015 SecuControl's Safety Test Switch brings test access into the year 2015. It combines advantages of legacy FT switches with safer design and easier operation: more value for the money. Safety is increased through a finger-safe front, eliminating exposure to voltages. Shorting bridges in disconnect pins for currents ensure make-before-break C... More

Siemens - High Performance

Automation Unit SICAM AK 3 SICAM AK 3, the new and most powerful device of the SICAM RTUs product family of Siemens can be flexibly used as: An automation Telecontrol and substation control unit, and As a data node for widely distributed processes The wide range of communication interfaces allows integration into any system and can be easily combined in full compliance with IEC ... More


Synchrophasor Solutions SIFANG has over ten years of experience and lots of success stories in supplying Phasor Measurement Unit (PMU) and Wide Area Monitoring Systems (WAMS).  More

Technology News

Gogoro - Smart Scooter

Gogoro, a company transforming how energy is distributed and managed in megacities, unveiled the world’s first high-performance, zero emissions, two-wheeled electric vehicle, the Gogoro Smartscooter™. From the drivetrain to the dashboard, the Smartscooter utilizes the precision, processes and materials used for supercars to offer top-level performance that is both user-friendly ... More

Inspire 1 - advanced camera drone

The detection of a short circuit fault or other abnormal condition is only the first step in a process of finding what exactly the cause is and the exact location. This is where the advances in drones and camera technology can help our industry by giving us a new set of tools that will allow us to improve the efficiency of the fault finding process. An example of one such product is the Ins... More

Microsoft HoloLens - connecting digital lives with real life

The continuous evolution of computer technology is making it possible to develop new methods and applications that will improve the efficiency of everything you do. HoloLens looks like one such enabling technology. Microsoft’s engineers envisioned a world where technology could become more personal-where it could adapt to the natural ways we communicate, learn, and create. Where our ... More

Cover Story

Improving the Protection of Distribution Systems with DERs

Effects of Short Circuit Faults   The reduction of the impact of short circuit faults on distributed energy resources (DER) can be achieved in several different ways. Like any other problem that has to be solved, we need first to understand the nature of the problem and its effect on the wind generators. The most common short circuit faults in the system - single-phase to ground f... More

IEC 61850 Update

20 years of IEC 61850

This fall it will be 20 years since we started with the endeavor of IEC 61850.  As you remember, we initially had three working groups in IEC TC57 dealing with the development of the first part of IEC 61850: WG10, WG11 and WG12. WG11 and WG12 were focused on the station respectively process bus while WG10 was responsible for the global parts. From these original members of the WGs, t... More

Lessons Learned

Fault Current Contributions from Wind Plants

Wind-Turbine Generator Types Wind-turbine generators (WTGs) are typically classified into five types. Type I is a squirrel-cage induction generator connected directly to the grid.  Similarly, Type II is directly connected to the grid and consists of a wound-rotor-induction generator with an adjustable resistor in the rotor circuit. Type III is an asynchronous wound-rotor generator that h... More

DER Testing

Protection, Automation and Control with DER - Testing Procedures for Distributed Energy Resources

The usage of (DER) is challenging for the entire grid and especially for the protection functions of the power system. Just to mention some of them are variable and increased fault levels, bidirectional power flow, false tripping of feeders,  blinding of protection, increase or decrease of fault levels with connection and unwanted islanding. (See below). One of the major challenges is... More

Wind Protection

Advancements & Future Trends in Protection of Wind Energy

Worldwide wind energy capacity has reached 336,327 MW by the end of 2014, out of which 17,613 MW were added in the first six months of 2014. Total wind energy generated of approximately 640 TWh, which represents 4% share of the global electricity demand. With high penetration of wind energy in different types/configurations of power electronic converters, protection engineers have been facing... More

Legal Issue

Open Door Policies

The Open-door policy (ODP) improves the communication between senior managers and employees (HP’s ODP philosophy), and is intended to boost communication in an environment of trust and mutual respect. ODP can solidify the foundation for teamwork, providing an atmosphere for excellent performance (K.A. Francis, ODP in Business, Demand Media). It should be implemented in a way that would e... More

Wind Integration

Designing a Wind Generation Integration Substation with IEC 61850 GOOSE

These two line terminals for the existing line that is being cut into the substation and two line terminals for connection of two nearby wind generation facilities. Construction of this green-field substation was used as a pilot project for the use of IEC 61850 Generic Object-Oriented Substation Event (GOOSE) messaging as part of the tripping architecture. As shown in Figure 2, the substati... More

The Guru

Interview with PACWorld guru Kraisi Karnasuta

Interview with PACWorld guru Kraisi Karnasuta PAC World:  When and where were you born? K.K.:  I was born in Bangkok, Thailand in 1947. PAC World:   Where did you go to school and did you have any special interests while there? K.K.:  I went to St. Gabriel School and my favorite subjects were Mathematics and Science. I started playing badminton at this time as ... More


Protection History

Requirements regarding indications and operation Already in 1984 at the German VDEW the working group “Integrated SCADA in Substations” was founded. Utilities, RTU specialists, SCADA vendors, protection engineers, switchyard specialists and IT experts have been talking together for the first time. As a result in 1990, a paper was presented that combines the wishes of users regar... More

I Think

A Simplified Look at a Complex Issue

When recently the oil price came down the discussion about the feasibility of renewable energy again emerged. A short-term vision, looking only at immediate profit, may justify such a discussion. However, I think that we need to keep our focus on the bigger picture. Fossil fuels will be depleted one day and the sooner we make the switch to alternative sources for the generation of energy, ... More

Industry Reports

Fault Current Contributions from Wind Plants

by IEEE PES PSRC Joint Working Group The  assignment of the working group was to characterize and quantify short circuit current contributions to faults from wind plants for the purposes of protective relaying and equipment rating, and to develop modeling and calculation guidelines for the same. The safe, reliable operation of electrical power systems requires the ability to predict ... More

Conference Reports

2014 South African Power System Protection Conference

The event was held from the 12th to 14th of November in Johannesburg, South Africa. The conference is held once every two years and the Power Delivery Engineering Division of Eskom, the South African electricity utility was once again the conference host, organizing it at the Gallagher Convention Center.    The presented papers and their discussions help to enhance the techn... More

2015 IEEE PES Innovative Smart Grid

Technologies Conference (ISGT) The Sixth Annual Conference on Innovative Smart Grid Technologies, sponsored by the IEEE Power & Energy Society (PES), was held 17-20 February 2015 in Washington, District of Columbia, USA. The conference program included different types of events - 3 keynote addresses, 3 plenary panel sessions, 24 parallel panel sessions, 8 technical papers sessions and a ... More

2015 IEEE-IEEMA Intelect Conference & Exposition (IIICE): Smart Electricity for Emerging Markets

The 2015 IEEE-IEEMA INTELECT Conference and Exposition was held 22 - 24 January 2015 at the Bombay Exhibition Center in Mumbai, India. IEEE and the Indian Electrical & Electronics Manufacturers’ Association (IEEMA) were the event organizers. The main goal is to provide an interactive platform which is being supported by three Ministries of the Government of India - Ministry of Power, ... More

20th Conference of the Electric Power Supply Industry, Jeju, Korea

The 20th CEPSI was held from 26 to 30 October 2014, in Jeju, Korea. The conference was organized by the Association of the Electricity Supply Industry of East Asia and the Western Pacific (AESIEAP) together with the state-run Korea Electric Power Corporation (KEPCO). The event venue was the International Convention Center Jeju and it was attended by more than 2000 delegates from 35 cou... More

DistribuTech 2015 Conference and Exhibition

DistribuTech 2015 was held 3-5 February at the the San Diego Convention Center, CA, USA. This was the 25th edition of the event, celebrated as being the largest conferences in the world that focuses on a wide range of issues related to transmission and distribution systems and their transition into the Smart Grid.  The motto of the conference and the exhibition was "Get Smarter". ... More

XII STPC - Technical Seminar on Protection and Control

The XII STPC was held in Rio de Janeiro, Brazil from 16 to 19 November 2014. The Technical Seminar was organized by Copel, in cooperation with the Protection and Control Committee (B5) of CIGRE - Brazil. The seminar was held at the Rio Othon Palace Hotel in Copacabana. This is an event with a long history and traditions and plays a very important role for the Brazilian PAC community. Its... More

Book Review

Wind Power in Power Systems

Second Edition The high level of penetration of large individual wind turbines and wind farms of different sizes has a significant impact on the electric power systems and requires a very good understanding of their impact and the challenges to the protection, automation and control specialists. The second edition of “Wind Power in Power Systems” is a hard cover book of more t... More


The Art and Enjoyment of Cooking

By by Christoph Brunner,  it4power, Switzerland For many, eating is reduced to a prerequisite for surviving. For me, over the time, cooking has become a passion. For those of you that know me, you may wonder how this fits a life spending half of the time traveling the world and living in hotels. In reality, this lifestyle may have had an impact that, while I always enjoyed cooking, it h... More

Final Thoughts
It is a well-known fact in the protection, automation and control industry that optimal performance of the PAC systems can be achieved based on advanced technology and engineering tools. The impact of the DERs on the performance of the PAC system has to be evaluated as part of the short circuit and protection coordination studies. And this is where the problem is. Today we can say (and I am... More

Relion advanced protection & control.
Let?s start with organization in protection testing