Multi-side voltage reactive power coordination optimal control system for transformer substation

Abstract

The invention discloses a multi-side voltage reactive power coordination optimal control system for a transformer substation. The multi-side voltage reactive power coordination optimal control system for the transformer substation comprises a magnetically controlled reactor (MCR) at a medium voltage side, an MCR-type static var compensator (MSVC) at a low-voltage side, a medium-voltage bus, a low-voltage bus and a voltage and current mutual inductor, wherein the medium-voltage bus, the low-voltage bus and the low-voltage side are configured with capacitor groups respectively provided with a virtual air gap controllable reactor to provide inductive reactive power compensation; the capacitor group is configured on the low-voltage side to realize the continuous regulation from inductive reactive power to capacitive reactive power; the transformer substation is subjected to multi-side voltage reactive power coordination optimal integrated control; the coordination optimal control is carried out by the MCR at the medium voltage side and the MSVC at the low-voltage side. According to the virtual air gap controllable reactor of the multi-side voltage reactive power coordination optimal control system for the transformer substation, which is disclosed by the invention, the adjustable volume of the controllable reactor can be realized.

Description

technical field [0001] The invention relates to a substation multi-side voltage and reactive power coordination optimization control system, in particular to a controllable reactor based on a virtual air gap. Reactive power compensation, and a capacitor bank is arranged on the low-voltage side to realize continuous adjustment from inductive to capacitive reactive power, and coordinate and optimize comprehensive control of voltage and reactive power on multiple sides of the substation. Background technique [0002] Voltage quality has an important impact on the safe and economical operation of the power system, on ensuring the safe production and product quality of users, and the safety and life of electrical equipment. Reactive power optimization is the key point to realize system economical operation, and the adjustment of voltage and reactive power has a close relationship. The operating voltage level of the power system depends on the balance of reactive power. Insuffici...

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Problems solved by technology

The main disadvantages of this method are: on the one hand, it is difficult to deal with the complex situation of inconsistent voltage and reactive power regulation on each side, and it is even more difficult to simultaneously take into account the precise control of voltage and reactive power on each side; on the other hand, through the reactive power of the low-voltage side The compensation device to compensate the reactive power on the medium voltage side causes a large amount of reactive power to pass through the transformer, causing power loss and affecting the economical operation and service life of the transformer

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