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    • 9. 发明公开
    • 정지형 무효전력 보상기용 TCR 제어 장치
    • 用于静态补偿器的电容器控制反应器的控制装置
    • KR1020130076112A
    • 2013-07-08
    • KR1020110144551
    • 2011-12-28
    • 주식회사 포스코재단법인 포항산업과학연구원포스코신기술연구조합
    • 김태원박태준한무호
    • G05F1/70
    • PURPOSE: A thyristor controlled reactor (TCR) control apparatus for a static Var compensator is provided to improve power factor and stability of a system voltage by compensating reactive power which varies rapidly like an electric furnace. CONSTITUTION: A positive phase sequence current calculation unit (111) calculates a positive phase sequence reactive current by converting a load current of each phase into a value of DQ synchronous rotation coordinate system. A compensation current calculation unit (113) calculates a compensation current of each phase by using the positive phase sequence reactive current, a negative phase sequence active current and a negative phase sequence reactive current. A reactive current control unit (122) calculates a compensation value for reactive power of each phase by performing PI control of error of the line reactive power of each phase and a pre-established reference reactive power. A firing angle calculation unit (13) determines a firing angle of a TCR by using the compensation current of each phase calculated in an open loop control unit and the reactive power compensation value calculated in a closed loop control unit. [Reference numerals] (111) Positive phase sequence current calculation unit; (112) Negative phase sequence current calculation unit; (113) Compensation current calculation unit; (114) Phase detection unit; (115) Susceptance conduction angle calculation unit; (121) Reactive power calculation unit; (122) Reactive power control unit; (13) Firing angle calculation unit
    • 目的:提供一种用于静态Var补偿器的晶闸管控制电抗器(TCR)控制装置,通过补偿像电炉这样快速变化的无功功率来提高系统电压的功率因数和稳定性。 构成:正相序电流计算单元(111)通过将各相的负载电流转换为DQ同步旋转坐标系的值来计算正相序无功电流。 补偿电流计算单元(113)通过使用正相序无功电流,负相序有功电流和负相序无功电流来计算各相的补偿电流。 无功电流控制单元(122)通过对各相的线路无功功率的误差进行PI控制和预先设定的基准无功功率来计算各相的无功功率的补偿值。 触发角计算单元(13)通过使用在开环控制单元中计算的每相的补偿电流和在闭环控制单元中计算的无功功率补偿值来确定TCR的触发角。 (附图标记)(111)正相序电流计算单元; (112)负相序电流计算单元; (113)补偿电流计算单位; (114)相位检测单元; (115)感应导导角计算单元; (121)无功功率计算单元; (122)无功功率控制单元; (13)点火角度计算单元