Series capacitor compensation device for power distribution network

A technology of series capacitors and compensation devices, which is applied in the direction of reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve the problems of not fully utilizing and adapting to the distribution network, etc., to achieve rational layout, convenient maintenance, and improved reliability effect

Active Publication Date: 2014-12-17
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

despite figure 1 The typical main circuit structure of the fixed series capacitor compensation device for EHV and UHV transmission systems shown in , can be directly applied to distribution networks with lower voltage levels without modification, but it is not fully utilized and adapted to the characteristics of distribution networks

Method used

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  • Series capacitor compensation device for power distribution network
  • Series capacitor compensation device for power distribution network
  • Series capacitor compensation device for power distribution network

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Embodiment Construction

[0055] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0056] Such as figure 2 as shown, figure 2 It is a schematic diagram of the main circuit structure of the series capacitor compensation device used in the distribution network in the present invention. The present invention provides a series capacitor compensation device, which includes: bypass circuit breaker 1, series isolation switch 2, grounding switch 3, A series capacitor bank 4, a thyristor 5, and a damping device 6.

[0057] The series capacitor bank 4 is connected to both ends of the bypass circuit breaker 1 through the series isolating switch 2, the grounding switch 3 is connected between the series isolating switch 2 and the series capacitor bank 4, the thyristor 5 and the damping device 6 are connected in series, and the series connected Thyristors 5 and damping means 6 are connected in parallel with said series cap...

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Abstract

The invention provides a series capacitor compensation device for a power distribution network. The series capacitor compensation device for the power distribution network comprises a series capacitor group which is connected with two ends of a by-pass circuit breaker through series disconnecting switches, positions between the series disconnecting switches and the series capacitor group are connected with grounded switches, and the series capacitor group is in parallel connection with a thyristor and a damping device which are in series connection. The series capacitor compensation device is suitable for the power distribution network, a main circuit structure is simplified, the reliability is high, and power failure of a line where the series capacitor compensation device is located can not occur during maintaining and replacing due to own faults of the series capacitor compensation device by means of the main circuit structure.

Description

technical field [0001] The invention relates to a device in the technical field of series capacitor compensation, in particular to a series capacitor compensation device used in a power distribution network. Background technique [0002] The series capacitor compensation device is to connect the capacitor bank in series in the AC transmission line to compensate part of the inductive impedance of the AC transmission line, so as to achieve the purpose of increasing the transmission capacity of the line, improving the stability of the system, and saving investment. In long-distance, large-capacity transmission systems, with the increase of transmission distance, the transmission capacity of transmission lines is more and more restricted. The series capacitor compensation device is one of the important means to solve this problem and improve the transmission capacity of the transmission line. It has very huge economic value and has been widely used in the power systems of countr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 戴朝波
Owner STATE GRID CORP OF CHINA
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