CAJ | 학술논문

通过研究变压器式可控高抗工作原理，分析了线路上并联了变压器式可控高抗后对线路差动保护的影响，比较了几种解决方案的优缺点。提出适用于并联了可控高抗输电线路的时域电容电流补偿计算方法。该方法可以满足长距离超高压线路差动保护暂态补偿电容电流的要求，提高差动保护的灵敏度。提出配置带补偿和不带补偿功能的差动保护方案，有效地保证了可控高抗CT异常时差动保护的可靠性。通过工程应用验证了适用于并联了可控高抗输电线路的时域电容电流补偿计算方法的可行性。
통과연구변압기식가공고항공작원리，분석료선로상병련료변압기식가공고항후대선로차동보호적영향，비교료궤충해결방안적우결점。제출괄용우병련료가공고항수전선로적시역전용전류보상계산방법。해방법가이만족장거리초고압선로차동보호잠태보상전용전류적요구，제고차동보호적령민도。제출배치대보상화불대보상공능적차동보호방안，유효지보증료가공고항CT이상시차동보호적가고성。통과공정응용험증료괄용우병련료가공고항수전선로적시역전용전류보상계산방법적가행성。
Through the study of Controllable Shunt Reactor of Transformer Type (CSRT), the effect of CSRT used on transmission line for line differential protection is analyzed and different solutions are proposed and compared. A new method of time domain compensation for CSRT used on transmission line is presented. The transient capacitive current compensation requirements and high sensitivity of line differential protection are satisfied by this method. High reliability of line differential protection is ensured by the configuration with and without compensation in parallel while CT installed on CSRT is abnormal. The feasibility for the method above is verified by an engineering application.