CAJ | 학술논문

以天广直流广州换流站一次现场交流主变压器复电引起直流谐波保护动作为例,分析了交流主变压器励磁对直流输电基波保护的影响,并通过 RTDS 仿真分析,定量地说明了交流谐波和直流谐波之间的相互关系和影响机制.仿真结果与动作时刻现场数据的一致性说明了仿真结果是可靠的.最后给出了对该直流系统基波保护的改进意见和整定原则.
이천엄직류엄주환류참일차현장교류주변압기복전인기직류해파보호동작위례,분석료교류주변압기려자대직류수전기파보호적영향,병통과 RTDS 방진분석,정량지설명료교류해파화직류해파지간적상호관계화영향궤제.방진결과여동작시각현장수거적일치성설명료방진결과시가고적.최후급출료대해직류계통기파보호적개진의견화정정원칙.
Taking a harmonics protection action in Guangzhou Converter Station of Tianshengqiao-Guangdong DC transmission project during the transformer excitation as an example, this paper analyzes the influence of the AC transformer excitation on DC fundamental harmonic protection of the system, and studies quantificationally the relationship and influence mechanism between AC harmonic and DC harmonic waves with RTDS. The agreement of the simulated data with the on-site data during the action period proves the correctness of the simulation. Finally, the improvement advice and setting principle for the Fundamental harmonic protection of the HVDC system are put forward.