35kV direct hanging type SVG master controller DSP system

Abstract

The invention discloses a 35kV direct hanging type SVG master controller DSP system comprising a configuration monitoring system, a PLC and a master controller. The master controller comprises a master control DSP and a master control FPGA. The configuration monitoring system is responsible for issuing control parameters and a complete machine protection set value and displaying the operation state and faults. The PLC is responsible for the operation flow of the complete machine. The master control DSP is responsible for data transmission between the configuration monitoring system, the PLC and the master control FPGA. The master control FPGA is responsible for completing sampling, algorithm operation, PWM pulse generation and protection thereof. A 35kV direct hanging type SVG is directly hung on a 35kV power grid without step-down transformers and can be adaptive to 100M level of rapid dynamic compensation of the power grid so that long-distance power transmission line voltage can be regulated, power transmission loss can be reduced, transmission capacity can be enhanced and transient voltage stability level can be enhanced, and thus the 35kV direct hanging type SVG can be widely applied to wind power stations and photovoltaic power stations.

Description

technical field [0001] The invention relates to a large-capacity static var compensator, in particular to a 35kV direct-mounted SVG main controller DSP system. Background technique [0002] In the construction and operation of my country's power grid, a long-standing problem is insufficient reactive power compensation capacity and unreasonable equipment, especially the insufficient adjustable reactive power capacity, and there are fewer reactive power adjustment equipment with fast response. [0003] In recent years, with the rapid economic growth, my country's power grid has the following characteristics: generators are basically at full power, making dynamic reactive power support increasingly insufficient; with economic growth and high-tech development, constant power loads are increasing year by year; Air-conditioning, heating and other types of sudden loads account for an increasing proportion, peaking at more than 40%, and conventional capacitor compensation devices can...

AI Technical Summary

Problems solved by technology

[0002] In the construction and operation of my country's power grid, a long-standing problem is insufficient reactive power compensation capacity and unreasonable equipment, especially the insufficient adjustable reactive power capacity, and there are fewer reactive power adjustment equipment with fast response

[0003] In recent years, with the rapid economic growth, my country's power grid has the following characteristics: generators are basically at full power, making dynamic reactive power support increasingly insufficient; with economic growth and high-tech development, constant power loads are increasing year by year; Air-conditioning, heating and other types of sudden loads account for an increasing proportion, peaking at more than 40%, and conventional capacitor compensation devices cannot meet the needs of sudden loads; in the large-scale national Internet, a large-capacity dynamic reactive power reserve is required; it needs to be improved Voltage stability of EHV grid, especially the voltage stability of important load centers; need to further improve the transmission capacity of active power

[0004] With the increasing number of high-power non-linear load users (such as electrified locomotives, rolling mills, electric arc furnaces, ferrosilicon furnaces, etc.), the impact on the power grid and harmonic pollution are on the rise. The lack of fast reactive power adjustment methods has caused the bus voltage Great changes with the operation mode, resulting in increased power grid loss

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