电气自动化
電氣自動化
전기자동화
ELECTRICAL AUTOMATION
2014年
5期
71-73
,共3页
陈仲航%刘海锋%余英%张保会
陳仲航%劉海鋒%餘英%張保會
진중항%류해봉%여영%장보회
小电流接地%自适应%母联运行方式%零序电压%同步变化
小電流接地%自適應%母聯運行方式%零序電壓%同步變化
소전류접지%자괄응%모련운행방식%령서전압%동보변화
small current grounding%self-adaptation%busbar operation mode%zero sequence voltage%synchronous change
配网系统中，母联运行方式发生变化，受出线数及长度影响，系统电容电流也相应变化。选线设备需要识别母线运行状态，并根据运行状态的变化相应调整选线范围，从而提高选线可靠性。根据零序电压同步变化特征，以软件方式识别母联运行状态，有效解决了传统硬节点接入方式带来的成本高且施工不便问题，在现场中已经得到大量应用。
配網繫統中，母聯運行方式髮生變化，受齣線數及長度影響，繫統電容電流也相應變化。選線設備需要識彆母線運行狀態，併根據運行狀態的變化相應調整選線範圍，從而提高選線可靠性。根據零序電壓同步變化特徵，以軟件方式識彆母聯運行狀態，有效解決瞭傳統硬節點接入方式帶來的成本高且施工不便問題，在現場中已經得到大量應用。
배망계통중，모련운행방식발생변화，수출선수급장도영향，계통전용전류야상응변화。선선설비수요식별모선운행상태，병근거운행상태적변화상응조정선선범위，종이제고선선가고성。근거령서전압동보변화특정，이연건방식식별모련운행상태，유효해결료전통경절점접입방식대래적성본고차시공불편문제，재현장중이경득도대량응용。
In the distribution network,when the busbar operation mode changes,the capacitance and current of the system also varies under the influence of the number and length of outgoing lines.Line selection devices have to identify the operation state of the bus,and adjust the line selection range according to the changes of the operation mode so as to improve the line selection reliability.Based on the characteristics of synchronous changes of zero sequence voltage,this method uses software to recognize the busbar operation mode, thus effectively solving the problems of high cost and difficult construction due to traditional hard node access mode.This method is widely applied in the field.
