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Three-bypass-breaker serial ultra/extra-high voltage subsection series capacitor compensation device

A series capacitor compensation, bypass circuit breaker technology, applied in reactive power adjustment/elimination/compensation, reactive power compensation and other directions, to achieve the effect of strong practicability, less equipment, and strong anti-error function

Inactive Publication Date: 2011-02-09
CHINA EPRI SCIENCE & TECHNOLOGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There is no EHV / UHV segmented series capacitor compensation device which is the same as or similar to the three bypass circuit breakers proposed in the present invention in series at home and abroad

Method used

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  • Three-bypass-breaker serial ultra/extra-high voltage subsection series capacitor compensation device
  • Three-bypass-breaker serial ultra/extra-high voltage subsection series capacitor compensation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] figure 1 Shown is a schematic structural diagram of the segmental series compensation main circuit with three bypass circuit breakers connected in series. For the convenience of illustration, the grounding switch attached to the disconnector is not shown in the figure. 1 stage, C2, MOV2, GAP2, D2, CB2 constitute 2 stages of series compensation. in,

[0027] Line: the line where the series compensation device is located;

[0028] G1: bypass isolation switch;

[0029] G2, G3: platform isolating switch;

[0030] C1, C2: capacitor banks in series;

[0031] MOV1, MOV2: metal oxide voltage limiter, respectively used to protect C1, C2;

[0032] GAP1, GAP2: Spark gaps, respectively used to protect C1, MOV1 and C2, MOV2;

[0033] CB1, CB2: Bypass circuit breakers, respectively used to bypass or reconnect C1 and C2 when necessary;

[0034] D1, D2: Damping device;

[0035] CB3: bypass circuit breaker, used to form a current transfer branch together with CB1 and CB2.

[00...

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Abstract

The invention provides a three-bypass-breaker serial ultra / extra-high voltage subsection series capacitor compensation device. In the invention, the current transfer is realized during series compensation switching by the series combination of a newly added bypass breaker and two conventional bypass breakers, and the requirement on the current transfer capacity of a bypass isolation switch is reduced greatly; moreover, the device has excellent error protection property, and solves the problem that the bypass isolation switch transfer current of the ultra / extra-high voltage subsection series capacitor compensation device exceeds the standard.

Description

technical field [0001] The invention belongs to the field of flexible AC power transmission in power systems, and relates to an ultra / ultra-high voltage segmented series capacitor compensation device in which three bypass circuit breakers are connected in series. It specifically involves the use of three bypass circuit breakers in series combination to transfer load current and realize anti-mislocking, and solve the problem of excessive transfer current of bypass isolation switches in super / ultra-high voltage segmented series compensation devices. Background technique [0002] There are great differences in the geographical distribution of primary energy and power loads around the world, and this difference is particularly prominent in my country. With economic development, the contradiction between supply and demand between energy supply and power consumption is becoming more and more serious. Long-distance, large-capacity, and cross-regional power transmission can effectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 刘慧文赵波武守远
Owner CHINA EPRI SCIENCE & TECHNOLOGY CO LTD
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