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Project to upgrade the protection relay system  Unit H3 – Tuyen Quang Hydropower Plant

Project to upgrade the protection relay system  Unit H3 – Tuyen Quang Hydropower Plant

Table of Content

Project overview

  • Client: Tuyen Quang Hydropower Company.
  • Scope of the project: Supplying materials, equipment and accompanying technical services for major repair of the protection relay system of unit H3.
  • Solution: Replace and upgrade the REG216 protection relay system with the REG670 protection relay system.
  • Implementation time: 2018.Nhà máy thủy điện Tuyên Quang

Tuyen Quang hydropower plant

Tuyen Quang Hydropower Company was established on June 1, 2007, under the Vietnam Electricity Group. Operating in the field of power supply, the main objective of the enterprise is to operate the hydroelectric power plant stably, ensure efficient production, and serve safe and uninterrupted power generation for economic and political activities. Therefore, as soon as it was discovered that the relay system of unit H3 (342MW) had a problem, S5T and the enterprise quickly checked, analyzed and proposed a plan to repair and overcome. .

Condition of the factory before the project implementation

After 10 years of operation, the relay protection system for the units of Tuyen Quang Hydropower Plant has been seriously degraded:
  • The relay has some bulging capacitors in the main board, the power card does not have enough capacity when the relay is working, the power-on startup takes a long time.
  • Unit protection relay REG216 has no display interface, measurement parameters cannot be checked during operation.
  • The fault recording function of the REG216 relay only records the normal current value, no phase angle, no pre-fault parameters, especially not reporting in waveform, so it is very difficult to analyze the data. Whether.
  • The two relay blocks are not time synchronized with the DCS system.

The solution S5T offers to solve factory problems

Faced with that situation, S5T Vietnam Technology and Solution Joint Stock Company, the authorized agent of ABB Group’s products and services in the field of protective relays (currently a part of Hitachi Energy), has joined forces The company’s experts survey, organize seminars with the factory’s engineers to research and come up with the optimal solution for upgrading this system. Realizing the technical and financial capacity of the S5T contractor, along with detailed technical solutions and high compatibility with the existing system, Tuyen Quang hydropower company decided to sign a contract for the “Supplying” package. supplying materials, equipment and accompanying technical services for major repair of the protection relay system for unit H3” in 2017.

Results and evaluation after upgrading the protection relay system for Unit H3

In April 2018, after 1 month of installation, testing and commissioning, the relay protection system for unit H3 of Tuyen Quang hydropower plant was officially energised and put into operation. The success of the project has completely solved the limitations and existing problems of the old system, and made the operation of the plant safer, more efficient and simpler than ever.
  • Installing a new relay system is no longer a matter of updating equipment and technology but also an urgent need to protect generator and transformer systems.
  • The new protective devices REG670, RED670 ensure compatibility with existing factory equipment.
  • The relay hardware is modular in design, and the PCM600 software is adjustable, making it easy to expand in the future.
  • Ensure high reliability and redundancy when there are 2 digital relay systems operating in redundancy for each other (system A and system B).
  • Analyze the causes of failures, and record and store details of events when there is an error signal as well as when a problem occurs to serve for fault finding and troubleshooting. .
  • The interface is intuitively displayed to the manager by the large HMI screen right on the protection relay face.
  • Simple and easy operation, convenient for maintenance, testing and adjustment.
  • Easy connection to protection relays  by means of a common Ethernet network cable and PCM600 software.
With the new system, the protection relay operates exactly as soon as the fault occurs, preventing the problem from becoming worse and also concluding the reliable operation of the new H3 unit protection relay system. commissioning.
Realize superiority and solve factory problems. In 2020 and 2021, Tuyen Quang Hydropower Company will continue to work with contractors S5T and EVNPSC to continue implementing bidding packages to upgrade the protection relay system for units H1, and H2.
Thử nghiệm hệ thống rơ le bảo vệ H1, H2
Test when replacing protective relay system H1, H2
Hướng dẫn vận hành hệ thống rơ le bảo vệ
Training on operating instructions for Tuyen Quang Hydropower Protection Relay system

To receive information about a similar solution/service, please send an inquiry to our mailbox, or contact us at the address below.

  • Address: S5T Vietnam Technology and Solution Joint Stock Company.
  • Lot B15, Duong Noi Resettlement Area, Duong Noi, Ha Dong, Hanoi.
  • Tel: 0243 540 1858 – Fax: 0243 540 1859
  • Email: info@s5t.com.vn

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