NR Electric Co., Ltd News
On May 11, 2022, Hunan 500 kV Shuicheng substation was successfully put into operation. The substation is the first 500 kV intelligent substation in Hunan Province to realize the remote 'one key sequence control' function. The implementation and application of remote 'one key sequence control' enables the staff of Changsha EHV centralized control station to operate the 500 kV Shuicheng substation equipment more than 300 km away only in front of the centralized control computer, greatly shorteni...
On April 12, 2022, NR PCS-9531 electronic load bank system was successfully put into operation at Ferronickel project in Indonesia. The successful operation of the system will improve the primary frequency modulation capacity of enterprise power grid, enhance the power grid damping, and effectively improve the static and dynamic stability of the grid. It has great application value for ensuring the safe, reliable and stable operation of islanding power network. Indonesia - the ‘country o...
Recently, the first unit of Zungeru hydropower station in Nigeria was successfully commissioned and realized power generation, which laid a good foundation for the power generation of subsequent units. NR has designed hydropower unit protection solutions for the project and provided key equipment such as generator transformer unit protection and switchyard protection. Zungeru hydropower station Zungeru hydropower station is located in the middle and upper reaches of Kaduna river Zungeru hydr...
On March 29, 2022, the DC back-to-back project in Guangdong, Hong Kong and Macao Bay Area (hereinafter referred to as Guangzhou Project), which lasted 15 months was successfully put into operation. The Guangzhou project The Guangzhou project put into operation this time adopts the new generation flexible DC transmission system of NR, including flexible DC protection & control, measurement, phase selection closing and opening devices, as well as flexible direct converter valve and other cor...
Recently, the first 220kV Badr#2 traction station of Egypt's first electrified railway - Egypt Ramadan 10th City Light - Rail Transit (LRT) railway project was successfully energized. Egypt's Ramadan 10th City LRT connects Cairo City, satellite cities along the East and the new capital of Egypt, with a total length of about 65 kilometers. 11 stations are set along the line. The completion of the project will drive the economic development of surrounding cities and facilitate the travel of nearl...
Recently, the first 220 kV Badr#2 traction station of Egypt's first electrified railway-Egypt Ramadan 10th City Light-Rail Transit (LRT) railway project successfully energized. Egypt's Ramadan 10th City LRT connects Cairo City, satellite cities along the East and the new capital of Egypt, with a total length of about 65 kilometers. Eleven stations are set along the line. The completion of the project will drive the economic development of surrounding cities and facilitate the travel of nearly f...
On February 9, 2022, the NR light rail energy feedback system with DC De-icer function was successfully implemented for the first time, effectively coping with the recent low-temperature rain and snow weather in Nanjing and ensuring the safe operation of trains on the Nanjing- Jurong line. In the early morning of February 7, 2022, there was a sudden heavy snow in Nanjing. With the continuous low temperature, the DC overhead lines of the Nanjing-Jurong elevated station were covered with ice, and...
On January 20, 2022, the first converter valve of The China Great Bay Area DC back-to-back project was successfully put into operation for the first time, marking an important step forward for the interconnection of the core areas of the Eastern and Western Pearl River Delta of Guangdong power grid. The converter valves were supplied by NR Electric (NR). Unit 1 on the East side of Guangzhou took the lead in entering the system commissioning stage among the four units of the whole project, creat...
Since January 22, Hubei has ushered in cold-wave weather and many snowfalls. The power grid company has issued an early weather warning. On January 24, the ice covering thickness of 220 kV Ainan line exceeded 31 mm, exceeding the maximum allowable value of the design. There was a risk of tower collapse, which seriously threatened the safety of the power grid. There was an urgent need for an ice-melting operation on-site to eliminate potential security hazards. Power grid security was urgent. Un...
The response time of the control device is 2.3ms, the breaking time of the fast mechanical switch is 1ms, and the overall effective time is 9.2ms. The artificial grounding short-circuit test of the fast switch based fault current limiter (FCL) was successfully accomplished. On December 20, 2021, the test results were announced at 750kV Helanshan substation of Ningxia Power Grid. PCS-8351 fast switch based FCL tested The performance indexes of PCS-8351 fast switch based FCL developed by NR wer...
Since January 22, Hubei has ushered in cold wave weather and many snowfalls. The power grid company has issued an early weather warning. On January 24, the ice covering thickness of 220 kV Ainan line has exceeded 31 mm, exceeding the maximum allowable value of the design. There was a risk of tower collapse, which seriously threatens the safety of the power grid. There was an urgent need for an ice melting operation on site to eliminate potential security hazards. Security hazards of the power...
Yangjiang Pumped Storage Power Station is a key project located in Guangdong Province with the largest single unit capacity in China (400MW). The Yangjiang Pumped Storage Power Station has successfully completed the trial operation. The core protection & control equipment such as static frequency converter (SFC) and system protection provided by NR has laid a solid foundation for the smooth start-up, grid connection and safe operation of the unit. Yangjiang Pumped Storage Power Station NR...
Yangjiang Pumped Storage Power Station is a key project located in Guangdong Province with the largest single-unit capacity in China (400 MW) has successfully completed the trial operation. The core protection & control equipment such as static frequency converter (SFC) and system protection provided by NR has laid a solid foundation for the smooth start-up, grid connection and safe operation of the unit. Yangjiang storage power station NR Electric has developed the SFC system with the hi...
On November 8, 2021, the first wind turbine of Jiangsu Rudong Offshore Wind Farm was successfully put into operation through flexible DC transmission, opening a new era in China of offshore wind power to transmission through flexible DC transmission, marking the successful application of NR flexible DC protection & control system in offshore wind power project. Rudong wind power project is the first offshore wind power flexible DC transmission project in Asia undertaken by the Three Gorges...
Recently, the generator terminal sub-synchronous damping control (GTSDC) system supplied by NR Electric (NR) quickly identified and accurately suppressed the torsional vibration of the shafting of two 660MW units, controlled the torsional vibration amplitude within the safe range, and significantly improved the safe and stable operation level of large generator units. GTSDC system can identify various modes of torsional vibration of the unit shafting, inject sub / super synchronous current to t...
November 8, 2021, the first wind turbine of Jiangsu Rudong Offshore Wind Farm was successfully put into operation through flexible DC transmission, opening a new era in China of offshore wind power to transmission through flexible DC transmission, marking the successful application of NR flexible DC protection & control system in offshore wind power project. DC transmission project NR provided a complete set of protection & control systems, measurement systems, integrated monitoring R...
On October 29, 2021, after more than 50 hours of continuous test, the DC de-icing equipment of 500kV Tianxing intelligent substation successfully completed the current raising operation with the line. NR has added another high-capacity DC de-icier in China Southern Power Grid. 500kV Tianxing Substation Tianxing substation is the second 500kV smart station of Yunnan power grid. It was put into operation in July 2021. The rated capacity of the de-icing equipment is 103MW and the rated output DC...
Recently, Hainan Wanning 9F 460MW heavy duty gas turbine unit 1 successfully completed 168 hour trial operation and was officially put into operation. NR has provided complete sets of core protection & control equipment, such as SFC variable frequency starting system, excitation system and generator transformer unit protection system for the project, so as to comprehensively protect the startup, operation and safety of the unit. NR provides core protection & control equipment The Data...
On October 29, 2021, after more than 50 hours of continuous testing, the DC de-icing equipment of the 500kV Tianxing intelligent substation completed the current raising operation with the line. NR has added another high-capacity DC de-icier in China's Southern Power Grid. Tianxing substation is the second 500kV smart station of the Yunnan power grid. It was put into operation in July 2021. The rated capacity of the de-icing equipment is 103MW and the rated output DC is 5000A, which can meet th...
On October 15, 2020, the stability control system of the Ali power networking project undertaken by NR was put into operation smoothly. The Ali networking project has realized the interconnection of the Ali power grid and the central Tibet power grid, fundamentally solving the serious power shortage problem in the Ali Region and Western Xigaze. The stability control system of the Ali interconnection project is an important system to ensure the safe and stable operation of the power grid in the...
PCS-8351 fast switching fault current limiter developed by NR was officially put into operation after 168 hours of stable operation in Xinjian, China on September 25, 2021. This project solves the problem of excessive short-circuit current caused by centralized transmission of renewables, reduces the impact of short-circuit current on electrical equipment of main power grid, and improves the flexibility and reliability of power grid regulation. In recent years, northwest power grid, as the mai...
The first 50MVar renewable energy distributed synchronous condenser in China successfully completed a 168-hour trial operation in a 330 kV Xuming substation and was officially put into operation recently. This also marks the successful delivery of NR's first distributed synchronous condenser protection & control system, which will escort the output of clean energy in Qinghai for a long time in the future and contribute to the realization of China's carbon-neutral goal. NR continues to...
On September 23, 2021, China’s first offshore pilot oilfield shore power project, the Qinhuangdao-Caofeidian Oil field Group shore power project, belonging to China National Offshore Oil Corporation (CNOOC) in the Bohai Sea region, was successfully put into operation. Qinhuangdao-Caofeidian oilfield shore power project includes an offshore 220 kV offshore Haifeng power platform, 220 kV onshore Haidiao switching station, 220 kV offshore Haiyu power platform, and 220 kV Haishun switching st...
PCS-8351 fast switching fault current limiter developed by NR Electric was officially put into operation, after 168 hours of stable operation in Xinjiang, China on September 25, 2021. This project solves the problem of excessive short-circuit current caused by centralized transmission of renewables, reduces the impact of short-circuit current on electrical equipment of the main power grid, and improves the flexibility and reliability of power grid regulation. northwest power grid In recent ye...
On September 23, 2021, China’s first offshore pilot oilfield shore power project, Qinhuangdao-Caofeidian Oil field Group shore power project, belonging to China National Offshore Oil Corporation (CNOOC) in the Bohai sea region, was successfully put into operation. Qinhuangdao-Caofeidian oilfield shore power project includes offshore 220kV offshore Haifeng power platform, 220kV onshore Haidiao switching station, 220kV offshore Haiyu power platform and 220kV Haishun switching station. The s...
Recently, the wind power frequency modulation system developed by NR has completed the commissioning and performance verification test in the CGN Daishan 516MW offshore wind farm. The test results show that the primary frequency modulation performance of the system is excellent. The successful application indicates that NR frequency modulation technology has taken another step forward. Primary frequency modulation of renewable energy is one of the effective means to maintain the frequency...
Recently, the entire system test of the world's first DC self-recovery energy dissipation device undertaken by NR was successfully completed and witnessed by experts, which laid a solid foundation for the engineering application of DC controllable self-recovery energy dissipation device. NR undertook the system integration design and complete supply of pole II DC controllable self-recovery energy dissipation device for Baihetan Jiangsu ± 800 kV UHV DC transmission project. NR techni...
Recently, NR PCS-985 exciter protection has been successfully put into operation in Ningde and Yangjiang 1000MW nuclear power plant, effectively solving the problem of "weak protection" of exciter, which is of great significance for improving the operation reliability of nuclear power equipment. At present, the excitation system of large-scale nuclear power generators generally adopts brushless excitation mode, which has the problem of weak protection configuration or even no protection. ...
On August 7, 2021, PCS-8910 fast switching voltage sag control independently developed by NR was officially put into operation in Shandong Jingbo Petrochemical. The formal commissioning of the project marks another major application of power grid voltage sag control in the industrial field. The fastest voltage stabilization time is less than 10ms, effectively reducing enterprise production accidents caused by voltage sag and improving the power supply reliability of the power grid. Voltage dip...
Recently, NR successfully won the bid for Mongolia's first photovoltaic (PV) energy storage microgrid project, providing a containerized energy storage PCS solution to help Mongolia expand the application of renewable energy. In Mongolia, the power supply mainly depends on coal-fired power generation and electricity import. Mongolia is gradually expanding the application of clean energy power generation to gradually reduce electricity import and greenhouse gas emissions. advanced energy storag...