摘要
对螺阳电厂220kV螺清线发展性故障情况进行分析,查找短路故障无法快速完全切除的原因。利用实时数字模拟仿真系统(real time digital simulator,RTDS)进行故障波形回放试验,试验表明,CSL-101A型线路保护装置在发展性故障的处理逻辑上存在不足,纵联距离和距离I段等瞬时动作保护元件的确认时间过长,导致故障无法快速完全切除。针对此,提出了改进保护动作可靠性的相应措施。
Evolving faults on 220 kV Luoqing lines of Luoyang power plant is analyzed to search for failure in handling the short trouble in full and at a rapid. Playback experiment on fault waveform is conducted by employment of real time digital simulator （RTDS）. The experiment makes it clear that there are disadvantages of CSL-101A line protection in logic for pro- cessing evolving faults; acknowledging time of transient protection action elements, such as pilot distance and one-step distance, is too long. All these mentioned above result in failure to handle the trouble fast and safely. Thereby, relevant measures for reliability improvement on protection action are proposed.
出处
《广东电力》
2011年第8期35-39,共5页
Guangdong Electric Power
