Capacitor platform for series compensator

Abstract

A capacitor platform for a series compensation device comprises at least one capacitor group, at least one metal oxide varistor, at least one spark gap, and at least one damping device. The capacitor platform is made of a steel structure and is placed horizontally. The capacitor group is disposed respectively opposite to the damping device, the spark gap, and the metal oxide varistor; the damping device, the spark gap, and the metal oxide varistor are disposed at the same side of the capacitor platform; the damping device is disposed above the spark gap and the metal oxide varistor or is mirrored. Alternatively, the capacitor group is disposed above the damping device, the spark gap, and the metal oxide varistor or is mirrored; the damping device is disposed respectively opposite to the spark gap and the metal oxide varistor. The capacitor platform has a compact layout, rational structure, full consideration on major device insulation, and cooperation on overall layout of major devices, and places the devices rationally with balanced force, thereby achieving the object of rational utilization of the platform space.

Description

technical field [0001] The invention belongs to the field of flexible alternating current transmission (FACTS) of electric power system, and specifically relates to a capacitor platform of a series compensation device, which is especially suitable for a fixed series capacitor compensation device (FSC), especially a fixed series capacitor compensation device with a voltage level of 750kV and 1000kV. 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 effectively alleviate the contradiction between power supply and demand, which has become one of the most important features of modern power systems. Power tran...

AI Technical Summary

Problems solved by technology

With the increase of the voltage level (750kV, 1000kV) the capacitor units increase significantly, and the structure of a single H-bridge connection can no longer meet the application needs. It is necessary to adopt a double-H-bridge parallel structure, or even a three-H-bridge parallel structure; the capacity of the damping device also increases accordingly. Large, need to use parallel scheme

Considering that there are many devices on the capacitor platform of the series compensator device, the connection is relatively complicated, and at the same time, it needs to meet the corresponding electrical insulation performance on the basis of satisfying maintenance and convenient replacement of devices. Therefore, the metal oxide voltage limiter MOV, spark The installation technology and installation process requirements for gaps and damping devices are relatively high

[0006] These are quite different from the existing 500kV series compensation. Copying the layout of the existing 500kV capacitor platform can no longer achieve the expected effect of the layout of the 1000kV / 750kV capacitor platform.

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