Hybrid static var system (HSVS) control system

Abstract

The invention provides a hybrid static var system (HSVS) control system and relates to the electrical technical field. The hybrid static var system (HSVS) control system comprises a microprocessor controller, a voltage/current detection circuit, a switching module and a load circuit, all of which are connected in parallel in a power grid; the voltage/current detection circuit is connected with a signal acquisition circuit which is connected with a signal trigger circuit; the signal trigger circuit is in communication connection with the microprocessor controller; the switching module comprises an MSC (Mechanically Switched Capacitor) module, a TSC (Thyristor Switched Capacitor) module and a TCR (Thyristor Control Reactor) module, all of which are connected in parallel; the MSC module serves as a capacitor switching device of a coarse tuning measure and is used for eliminating the harmonic quantity of a fixed layer, the TSC module serves as a capacitor switching device of fine tuning, and the TCR module is used for phase-control fine tuning and capable of absorbing excessive reactive power generated in the capacitor switching processes of the MSC module and the TSC module, and therefore, an SVC (Static Var Compensator) can be switched more accurately, and low harmonic pollution is generated during switching.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a hybrid reactive power compensation HSVS control system. Background technique [0002] Most of the electric loads in the power grid are inductive loads. These inductive devices not only need to absorb active power from the power system during operation, but also absorb reactive power to establish an alternating magnetic field, which directly leads to low power factor. Excessive reactive power loss in the system will also cause other hazards: 1. Large network loss; 2. Low network transmission capacity; 3. User-side voltage offset; 4. Increased power rate and electricity charges. The electric power sent by the power supply bureau is the apparent power calculated in VA, but the charging is the active power calculated in W, and the reactive power in VAR is not used as the basis for charging. In order to enhance the energy-saving awareness of the majority of power-consuming ente...

AI Technical Summary

Problems solved by technology

Early reactive power compensation devices used AC contactors as switching capacitors in parallel, and in the current medium and low voltage compensation systems, there are still many applications for mechanical switches.

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