Book Review Opinions

Practical Power System and Protective Relays Commissioning

1st Edition

Reviewed by Alexander Apostolov, USA

The changing electric power industry is imposing increased requirements for improvements in the reliability of the grid. Years of experience of utilities around the globe have shown that many undesired operations of protection, automation and control systems could have been avoided if the system was properly tested during the substation commissioning before energization. Substations commissioning is becoming more and more complex due to the digital transformation and the development of new technologies. This is further complicated by the loss of expertise due to the aging workforce. 

That is why the book “Practical Power System and Protective Relays Commissioning” can play a very important role by providing very useful and well structures guidelines for the commissioning of primary and secondary equipment in electrical substations.

The author of the book is Dr Omar Salah Elsayed Atwa, who holds B. Sc. in Electrical Power & Equipment Engineering and M. Sc. in Digital Distance Protection. He is a power system protection and control consultant and has 28 years hands-on experience working in power stations and substations construction, testing and commissioning, which allows him to present the material from a very practical point of view.

The close to 400 pages of the book are organized in 23 chapters. The first two chapters of the book present the different power system elements and substations, followed by an introduction to testing and commissioning of power system. The next twelve chapters are dedicated to the theory, testing and commissioning of generators and motors, power transformers, transmission lines, circuit breakers, air insulated system substations, surge arresters, traditional and electronic current transformers, traditional and electronic voltage transformers, disconnecting switches and earthing switches, fault recorders in substations and power stations, GIS substations and batteries. 

Chapter 16 presents the fundamental principles of electric power system analysis and some practical examples of fault calculations.

The next chapter is an introduction to the IEC 61850 protocol and how it is used in protective relays communications. 

Chapter 18 covers protection relays theory and applications focusing on overcurrent, distance, motor, transformer, busbar and generator protections. Unit and backup protections, as well as substation automation are also described. The next chapter is focused on protection relays settings for the types presented in the previous chapter.

Chapter 20 is dedicated to protection relays commissioning and testing for the different types described earlier. This is followed by a chapter that provides at-site example values from test results collected from real systems.

Chapter 22 describes the final primary injection test of a substation and its energization.

The last chapter 23 is very important because it illustrates how to have the correct schedule and resource management to get the project done on time and without loss of time and money. A practical example is given for this purpose, to explain this concept through the experience of the author from many projects which were losing money and time during execution due to a lack of proper management of resources and a lack of scheduling of the testing activities in good and proper sequences. 

“Practical Power System and Protective Relays Commissioning” is a valuable resource for operating engineers, relay technicians, and anyone involved in commissioning power systems. Its clear explanations, practical approach, and comprehensive coverage make it a helpful guide for both understanding the fundamentals and implementing them in real-world scenarios. While some areas could be expanded upon, the book undoubtedly serves as a solid foundation for those seeking to excel in the field of power system commissioning.