Closed loop test system and closed loop test method of rapid switched capacitor automatic apparatus

Abstract

The invention discloses a closed loop test system of a rapid switched capacitor automatic apparatus. The system comprises a simulation workstation for establishing a power grid model, a real-time digital emulator, an analog output interface card, a digital output interface card, a digital input interface card, a level isolation relay, a voltage amplifier, a switched capacitor automatic apparatus, a background monitor, an Ethernet, and a special-purpose debug serial port line. The simulation workstation is connected with the real-time digital emulator through the Ethernet. The real-time digital emulator outputs voltage analog quantity to the switched capacitor automatic apparatus through the analog output interface card by passing across the voltage amplifier. The real-time digital emulator outputs switch quantity to the switched capacitor automatic apparatus through the digital output interface card by passing across the level isolation relay. A switch motion command is returned by the switched capacitor automatic apparatus to the real-time digital emulator through the digital input interface card. The switched capacitor automatic apparatus is connected with the background monitor through the special-purpose debug serial port line.

Description

technical field [0001] The invention relates to a real-time digital closed-loop test technology of an electric power system, and more specifically relates to a closed-loop test system and a test method of a fast switching capacitor automatic device. Background technique [0002] In the China Southern Power Grid system, there are a large number of reactive power equipment installed in the stations of each voltage level. The operation practice has found that even in the case of heavy load, some capacitors are in standby state. If the automatic device can be used to automatically put in the backup capacitor when the system voltage drops, the voltage stability of the system can be improved at a relatively small cost; in terms of control strategy, it is considered that the capacitor does not act when the system fails and is correctly cut off. , input in the case of protection or switch refusal. Although the AVC and VQC currently used can also control the switching of capacitors,...

AI Technical Summary

Problems solved by technology

Although the AVC and VQC currently used can also control the switching of capacitors, they cannot meet the requirements of fast switching capacitor banks on the time scale.

Images