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Notice of State Grid Corporation of China

2022-02-18 11:43:22

On July 26, the State Council held a national teleconference on work safety to convey and study the spirit of the important instructions and instructions of the central leading comrades. It is required to take "preventing risks, ensuring safety and welcoming Daqing" as the main line of work safety in the second half of the year, do a solid job in all work safety, and meet the 70th anniversary of the founding of new China with the actual results of ensuring safety and stability.

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Reasons for placing pebbles in transformer

2022-02-18 11:42:54

Oil immersed transformer is used as the insulation medium (oil immersed transformer is mainly used as the cooling medium). The main reasons for putting pebbles in the oil pit of oil immersed transformer are fire prevention and oil drainage.

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Three steps and eight skills of electrical troubleshooting

2022-02-18 11:42:12

There are many kinds of electrical fault phenomena. For example, the same type of fault may have different fault phenomena, and different types of fault may have the same fault phenomenon. The identity and diversity of this fault phenomenon bring complexity to fault finding.

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Application of transformer partial discharge on-line monitoring in Smart Grid

2022-02-18 11:41:31

Electromagnetic interference in a broad sense includes not only the interference that enters the monitoring system through the current sensor together with the partial discharge signal, but also the interference that affects the monitoring system itself, such as grounding, shielding, and dry s interference caused by improper circuit processing.

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Problem set of vs400a zinc oxide arrester resistive current tester

2022-02-18 11:40:30

What is the measuring principle of vs400a zinc oxide arrester resistive current tester?A: digital signal processing and harmonic analysis technology and Fourier transform technology are adopted to separate the resistive current in the whole current through the sampling of current signal and Pt voltage signal, so as to realize the measurement of resistive current.

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Harmonious road between power grid and ecology

2022-02-18 11:38:36

Energy is the basis of economic and social development. With the sustained and rapid development of new energy development and utilization, the energy structure presents a diversified trend. Electric energy is a clean secondary energy, and the power grid is a green platform for power transmission, resource allocation and customer service.

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Optimal control of reactive power and voltage in distribution network

2022-02-18 11:37:39

Voltage is one of the indicators to measure power quality. The quality of power grid operation voltage is a comprehensive reflection of the technical level of distribution network structure, reactive power supply configuration, reactive real-time control and operation management. It is also the embodiment of the coordination ability of power generation, supply and use. In the operation of distribution network, reactive power has a great impact on voltage quality. There is a strong coupling relationship between reactive power and voltage, and reactive power imperceptibly affects voltage quality.

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Building a market-oriented power dispatching mechanism

2022-02-18 11:36:43

The national power system reform plan defines the overall direction of power market-oriented reform and proposes to build a power market system with separation of government and enterprises, fair competition, openness, order and healthy development under government supervision. This will also promote the reform of market-oriented operation of power dispatching, greatly enrich the connotation of power dispatching, make it better command and coordinate the operation of power grid, maintain the balance between power supply and demand, and ensure the safe and economic operation of power grid.

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Development status and trend of substation integrated automation

2022-02-18 11:35:33

Substation is an indispensable and important link in power system. It undertakes the heavy task of power conversion and power redistribution, and plays an important role in the safe and economic operation of power grid. In order to improve the safe and stable operation level of substation, reduce operation and maintenance costs, improve economic benefits and provide users with high-quality power services, substation integrated automation technology began to rise and has been widely used.

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Measures to improve the stability of power system

2022-02-18 11:34:34

The loss of stability of power system in operation is the most serious accident of power system. Therefore, in the design and operation of power system, it is found that the stability of the system is not high enough after calculation. Technical measures should be taken to ensure the safe and stable operation of the power system. In addition, once the system loses stability, corresponding measures should be taken to limit the scope of the accident, reduce the resulting loss, and restore the normal operation of the system as soon as possible.

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Add：Power Valley Technology Center, 3088 Lekai North Street, Baoding City
Phone：0086-15231260588
Tel：0086-312-3172660 / 3188565
E-mail：bdweisheng@126.com

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