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Measurement system of series compensation capacitor group

A measurement system and capacitor bank technology, applied in measurement devices, measurement of electrical variables, measurement of resistance/reactance/impedance, etc., can solve problems such as heavy workload, cumbersome balancing steps, and inability to specifically point out the deviation of H-shaped bridges, etc. Achieve the effect of improving the trimming accuracy and avoiding the interference of stray capacitance

Active Publication Date: 2013-10-09
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This method cannot specifically point out the deviation between a certain capacitor bank and other capacitor banks on the H-shaped bridge. Therefore, it is necessary to continuously exchange capacitor banks, resulting in cumbersome steps for balancing and a large workload.

Method used

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  • Measurement system of series compensation capacitor group
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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0026] figure 1 It is a structural diagram of a balance adjustment system for a series-compensated capacitor bank disclosed in an embodiment of the present application.

[0027] Such as figure 1 As shown, the balance adjustment system disclosed in this embodiment includes: a single-phase AC power supply 20, a first ammeter 30, a second ammeter 40, and an adjustable capacitor bank 50, and also includes the first ammeter 30, the second ammeter 40, and the adjustable capacitor bank respective...

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Abstract

The invention discloses a fast measurement system, which is used for rapidly measuring a capacitor group on each bridge arm of an H-shaped bridge. The measurement system comprises a single-phase alternating-current power supply, a first ampere meter, a second ampere meter, at least one adjustable capacitor group and a processor, wherein the single-phase alternating-current power supply is used for supplying electricity to two ends of the H-shaped bridge; the first ampere meter is used for measuring a main current value of the H-shaped bridge; the second ampere meter is used for measuring an unbalance current value of the H-shaped bridge; at least one adjustable capacitor group is connected to the capacitors of the capacitor group in parallel; the processor is respectively connected with the first ampere meter, the second ampere meter and the adjustable capacitor group, and is used for emitting a control signal to adjust the electric capacity of the adjustable capacitor according to the main current value and the unbalance current value; and the processor can adjust the electric capacity of the adjustable capacitor group according to the relation between the main current value and the unbalance current value, and can rapidly measure a deviation value of the capacitor group on each bridge arm of the H-shaped bridge in the adjusting process according to the change rule of the unbalance current value.

Description

technical field [0001] The technical field of electric power transmission of the present application, more specifically, relates to a measurement system of a series-compensated capacitor bank. Background technique [0002] By connecting the series compensation capacitor bank in the high-voltage transmission line, the impedance of the line can be compensated, and the power transmission capacity of the line can be improved. Generally, each series compensation device is composed of four capacitor banks connected into an H-shaped bridge. The capacitance of each capacitor bank should be as consistent as possible, otherwise it will cause damage to the capacitor bank. Therefore, when adding or replacing a series compensation capacitor bank, it is necessary to To adjust the balance of the capacitors, that is, to adjust the difference between the capacitances of each capacitor bank on the H-shaped bridge to within a specified range. Before the capacitor bank is installed on site, th...

Claims

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Application Information

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IPC IPC(8): G01R27/26
Inventor 夏岩松赵淑珍张金祥骆立实古亮马宗乐尹路李晨董杰郝东升
Owner STATE GRID CORP OF CHINA
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