CAJ | 학술논문

提出了一种通过晶闸管开关装置直接调节电容器两端电压以调节电容无功功率的方法和相应的原理及接线。同时提出了换级控制方法，分析了故障时产生的断态过电压，采用氧化锌压敏电阻过压保护后，重新对断态过电压进行了仿真。结果表明：补偿装置能多级、大范围调节容性无功，较之于其它快速补偿装置综合工程造价低，有望用于高压电网；装置故障时，会出现严重过电压，若过压保护动作后可使断态电压降低到允许范围内。
제출료일충통과정갑관개관장치직접조절전용기량단전압이조절전용무공공솔적방법화상응적원리급접선。동시제출료환급공제방법，분석료고장시산생적단태과전압，채용양화자압민전조과압보호후，중신대단태과전압진행료방진。결과표명：보상장치능다급、대범위조절용성무공，교지우기타쾌속보상장치종합공정조개저，유망용우고압전망；장치고장시，회출현엄중과전압，약과압보호동작후가사단태전압강저도윤허범위내。
A method for reactive compensation by using thyristor switching device to change the capacitor volt-age directly and the wiring of the principle are proposed. The tap-changing control method is analysised. State of off-state over-voltage is analyzed under fault. For fault condition,the simulation is redone with ZnO varistor over-voltage protection being adopted. Results show that the device can adjust capacitive reactive power in multi-stages and large scale. The project costs lower than other fast reactive compensation devices,and this e-quipment can be widely used in high voltage power network. When there is fault in the device,serious off-state over-voltage will occur. If the over-voltage protection acted,the off-state over-voltage is not high.