Study on VBE and TE Controlling System for Static Var Compensator
|School||North China Electric Power University|
|Keywords||SVC VBE TE triger|
The paper mainly concerns technical part of Valve Base Electronic (VBE) and TE control system for TCR type Static Var Compensator (SVC). The VBE part contains Electro-optical trigger and Electro-optical monitoring, in which Electro-optical trigger part is used for thyristor valves triggering on and receive Triggering, lock and other signals from SVC Monitoring system, and also send VBE data back to the Monitoring System, and the Electro-optical also has the function of electricity-optic switch function. Electro-optical monitoring part mainly collect thyristor valve status data and feed back from BOD, and then send these data to SVC Monitoring system, this part also receive setting values and other orders from SVC monitoring system and also has electricity-optic switch function. The research on TE control system mainly focus on valve voltage detection of TE control system, voltage level detection and triggering pulse sequence detection technology, etc and single TE control system can trigger two common anode thristor function to complete BOD backup protection, this technology can monitor thyristor valves and also communicate with VBE. From the experiments above items, and tested online without fault and applied to practical projects to test their effect. The technology has optimized SVC system structure, lowered SVC fault frequency, improved system triggering currency, shortened error scope and increased SVC monitoring scope with research and practical applications. Finally, the paper summarized key technology and study results and depict future SVC development.