High-voltage numerical control feedback type saturated reactive power compensation system

Abstract

The invention belongs to electric power equipment, and in particular relates to a power network reactive power compensation system. A high-voltage numerical control feedback type saturated reactive power compensation system consists of a plurality of compensators (1) arranged in the center of each load of a power network respectively, and a controller (2) arranged at an outgoing line of a transformer station, wherein the compensators (1) comprise a measuring unit (11) for sampling voltage, current and power factors, a data transmission unit (12) for transmitting the sampled data to the controller (2) and receiving switching commands from the controller (2), and a reactive power compensation unit (13) for executing multi-level compensation capacity switching; and the controller (2) comprises a measuring unit (21) for sampling the voltage, the current and the power factors, a data transmission unit (22) for receiving the sampled data from the compensators (1) and sending the switching commands to the compensators (1), and a data processor (23) for performing real-time monitoring and comprehensive treatment on the sampled data to form the switching commands. The high-voltage numerical control feedback type saturated reactive power compensation system can obviously improve the reactive power compensation effect on the entire power network, eliminate a large amount of phenomena of under compensation and over compensation, achieve energy conservation and ensure the power supply quality.

Description

technical field [0001] The invention belongs to electric equipment, in particular to a reactive power compensation system for a power grid. Background technique [0002] In my country's 6-35KV power grid, it is generally adopted to set up multiple independent reactive power compensation devices in multiple load centers, and determine the compensation method of switching amount of the reactive power compensation devices according to the reactive power compensation requirements of the load centers. Due to the limited number of switching capacity series of reactive power compensation devices (such as 1N, 2N, 3N; N is the capacity of a single compensation capacitor), the reactive power compensation amount of each load center is usually not appropriate, but is often under-compensated or overcompensation state, so the decentralized independent compensation of multiple load centers may cause a large amount of undercompensation or a large amount of overcompensation of the entire pow...

AI Technical Summary

Problems solved by technology

Due to the limited number of switching capacity series of reactive power compensation devices (such as 1N, 2N, 3N; N is the capacity of a single compensation capacitor), the reactive power compensation amount of each load center is usually not appropriate, but is often under-compensated or overcompensation state, so the decentralized independent compensation of multiple load centers may cause a large amount of undercompensation or a large amount of overcompensation in the entire grid

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