The difference between withstand voltage and insulation
2. The metal shell of the test device should be reliably grounded; the high-voltage lead should be as short as possible, and a dedicated high-voltage test wire should be used, supported firmly with insulating materials when necessary.
A construction cartoon: only if you spot 47 safety issues can you be considered awesome! Shanxi Energy Supervision Office revised the "Implementation Rules for the Filing of Shanxi Electric Power Construction Projects"
According to BJX Transmission and Distribution Network, on May 31, with the completion of 5 impact tests, the first 110kV infrastructure smart station in Hunan Province (Xiangtan Bantang 110kV Substation Project) was successfully connected to the grid and put into operation. This project belongs to the 110kV modular third-generation intelligent substation and is also the first 110kV infrastructure smart substation in Hunan Province. This smart substation has functions such as one-click operation, automatic inspection, proactive warning, and intelligent decision-making, which will bring the operation of the substation
From May 16 to 31, at the National High-Voltage AC Test Base in Jiangxia, China Electric Power Research Institute conducted a half-month test on indoor track-type inspection robots for 15 types of substations from multiple domestic suppliers. This is also the first time in China that performance testing of such equipment has been carried out. It is understood that at the end of last year, State Grid Corporation assigned the centralized testing task to China Electric Power Research Institute. In February this year, the institute drafted the "Substation Indoor Track-type Inspection Robot Sys...
On May 30, the 220kV Liangqiu Substation, located in Ganyu District, Lianyungang City, Jiangsu Province, was put into operation, further strengthening the power grid structure in northern Jiangsu. This is the first green, low-carbon demonstration substation in Lianyungang, and it is expected to reduce carbon emissions by 480 tons annually. The station's air conditioning uses a ground-source heat pump system for heating and cooling, saving approximately 170,000 kWh of electricity each year. “The electrical equipment inside the substation emits a large amount of heat during operation,
On May 30, the 220kV Liangqiu Substation was fully put into operation at all voltage levels, marking the further optimization and strengthening of the northern neural endpoints of the Jiangsu power grid. This is the first green, low-carbon demonstration substation in our city and also the first time in the province that a ground-source heat pump air conditioning system has been used in a substation. It is reported that the 220kV Liangqiu Substation is located in Lizhuang Town, Ganyu District, and is a reinforcement project for the northern power grid of our province. After the substation is put into operation, it can reduce carbon emissions by 480 tons annually.
According to BJX Transmission and Distribution Network, on May 25, the expansion project of the 500kV Zibo Substation in Shandong Province was officially completed and put into operation. It is the first ultra-high voltage project in Shandong Province in recent years to first demolish and then rebuild within the station area. The substation is located in Huantai County, Zibo City, Shandong Province, and started construction on December 25, 2020. The project mainly includes the installation of one 1000MVA main transformer; the demolition and reconstruction of the original 220kV distribution equipment, and the construction of new 220kV outgoing lines, etc.
The Northwest Energy Regulatory Bureau organized a symposium on user-side power protection supervision work for the three provinces (regions) of Shaanxi, Ningxia, and Qinghai in 2022
In order to thoroughly implement the deployment requirements of the National Energy Administration for ensuring energy supply during the peak summer period, effectively carry out the supervision work for energy supply guarantee in the 2022 summer peak, and effectively ensure the safe and stable power supply for the people and important users, recently, the Northwest Energy Regulatory Bureau organized a symposium on user-side power protection supervision work for the three provinces (regions) of Shaanxi, Ningxia, and Qinghai. More than 60 people, including relevant responsible comrades from Yulin Power Supply Company, attended the meeting. The meeting conveyed the national
Dai Junliang, Director of the Market Supervision Department of the National Energy Administration: This year, efforts will be increased in power market construction and supervision
The National Energy Administration has clearly proposed to make 2022 a "year of efficiency improvement" for energy supervision. What are the key tasks of energy supervision this year? How will supervision efficiency be improved, and the precision and effectiveness of supervision be enhanced? In the process of promoting power market-oriented reform and building a fair, open, and effectively competitive energy market system, what aspects will market supervision strengthen guidance? Recently, a reporter from China Energy Media exclusively interviewed Dai Junliang, Director of the Market Supervision Department of the National Energy Administration
According to BJX Power Grid, the State Council issued a notice on the "Outline of Meteorological High-Quality Development (2022—2035)". The outline mentions implementing the "Meteorology+" empowerment action. Promote the deep integration of meteorological services into production, circulation, consumption, and other links. Improve the level of meteorological services for energy development and utilization, planning and layout, construction and operation, and allocation, storage, and transportation. Strengthen the forecasting and warning of power meteorological disasters, and do a good job in refined power grid safe operation and power dispatching.
In the early morning of January 14, the high-voltage electrical test after the installation of the 15th 500kV main transformer at the Baihetan Right Bank Power Station was successfully passed. All test data results are better than national standards and meet the Three Gorges Group's premium standards, marking that the 15th 500kV main transformer has passed the "big test" of long-distance transportation, installation and construction. The main transformer is the core equipment for power conversion. Due to transportation restrictions, the 25 500kV single-phase main transformers of the Baihetan Right Bank Power Station were transported with nitrogen filling to
In the early morning of January 14, the high-voltage electrical test after the installation of the 15th 500kV main transformer at the Baihetan Right Bank Power Station was successfully passed. All test data results are better than national standards and meet the Three Gorges Group's premium standards, marking that the 15th 500kV main transformer has passed the "big test" of long-distance transportation, installation and construction. Due to transportation restrictions, the 25 500kV single-phase main transformers of the Baihetan Right Bank Power Station were transported with nitrogen filling to
On May 9, Song Lin, a staff member of the Electric Power Research Institute of State Grid Qinghai Electric Power Company, was debugging equipment in the high-voltage test hall. On the same day, the institute carried out experimental research on the air clearance of ±800kV UHV valve hall under high-altitude and high-dry environment conditions in the high-voltage test hall of the high-altitude and high-voltage laboratory located in Xining City, Qinghai Province. This research is of great significance to the smooth progress of the Qinghai-Henan ±800kV UHV DC project.
A reporter learned from State Grid Qinghai Electric Power Company that the high-voltage test hall of the Qinghai High-Altitude and High-Voltage Laboratory, with a total project investment of 99 million yuan, has recently passed the completion acceptance. Yang Xiaoku, Party Secretary of the Electric Power Research Institute of State Grid Qinghai Electric Power Company, introduced that the construction of the test hall officially started in September 2016, and it mainly has the capability to carry out AC 1000kV and DC ±1100kV external insulation tests and ±800kV converter transformer factory tests. The test hall is built
In order to promote the development of high-voltage equipment testing and on-site testing technology, and provide a communication platform for technical personnel in the field, the Testing Technology and Instrumentation Committee of the Chinese Society for Electrical Engineering organized a forum on high-voltage equipment testing and on-site testing technology in Baoding, Hebei from April 18 to 20, 2018. Professor Zhang Qiaogen and Dr. Wen Tao from Xi'an Jiaotong University shared a special report titled "Several Issues in High-Voltage Testing of Large-Capacity AC/DC Power Equipment" with the attending experts. Small
Recently, the UHV test personnel of State Grid Shandong Electric Power Research Institute completed the second phase of the main circuit insulation test of the 1100kV GIS at the 800kV Guanggu Converter Station, and the withstand voltage test was successfully passed, with no abnormal signals in ultrasonic and UHF partial discharge detection. The main circuit insulation test of the 1100kV GIS at the 800kV Guanggu Converter Station is divided into two phases, and this test is the last phase. The successful passing of this test marks the main circuit of the 1100kV GIS equipment at this station
The largest ultra-high voltage transmission and transformation project under construction in Zhejiang Province —— the 500kV Lixi Transmission and Transformation Project has been started and put into operation
Implementation Rules for Power Supply Reliability Control of Hangzhou Power Grid in Zhejiang (Trial): Give full play to the role of the distribution automation system
Implementation Rules for Power Supply Reliability Control of Hangzhou Power Grid in Zhejiang (Trial): Give full play to the role of the distribution automation system
Giant Era | MR develops on-load tap changer for "XXL" transformers that can handle 3200 amperes of current
