核電廠中壓電氣貫穿件短路電動力試驗探討
鄭開云
（上海發(fā)電設(shè)備成套設(shè)計研究院，上海 200240）
摘 要：核電廠中壓電氣貫穿件為安全殼內(nèi)反應堆冷卻劑泵電機提供三相交流電源，設(shè)備設(shè)計和鑒定中應考慮可能發(fā)生的單相、兩相和三相短路故障。根據(jù)中壓電氣貫穿件的結(jié)構(gòu)特點和相關(guān)鑒定標準，對比分析了中壓電氣貫穿件可能發(fā)生的兩相和三相短路的電動力，并探討了短路電動力試驗方法。分析結(jié)果表明：中壓電氣貫穿件發(fā)生三相短路的電動力較大，中壓電氣貫穿件應進行三相短路試驗；短路試驗電路的X /R 值和合閘相角對于短路電動力都有影響；在進行短路試驗時應調(diào)整試驗電路參數(shù)，確保至少其中某一相導體的短路電流達到最大短路電流峰值，從而使電動力達到預期目標值。
關(guān)鍵詞：核電廠；中壓電氣貫穿件；電動力；短路試驗
中圖分類號：TM623 文獻標識碼：A 文章編號：1007-3175(2017)06-0051-04
Discussion on Short-Circuit Electromotive Force Testing of Medium-Voltage
Electric Penetration Assembly in Nuclear Power Plant
ZHENG Kai-yun
（Shanghai Power Equipment Research Institute, Shanghai 200240, China）
Abstract: The medium-voltage electric penetration assembly in nuclear power plant provides three-phase AC power source for the reactor coolant pump dynamo inside the containment. In the design and appraisal of equipment, consideration should be made for the possible happened one-phase, two-phase and three-phase short-circuit faults. According to the structure feature of medium-voltage electric penetration assembly and the related appraisal standard, this paper compared and analyzed the two-phase and three-phase short-circuit electromotive forces possibly happened in medium-voltage electric penetration assembly and probed the testing method. The analysis result shows that the electromotive forces of three-phase short-circuit are larger in medium-voltage electric penetration assembly. The medium-voltage electric penetration assembly should be subjected to three-phase short-circuit test. The X/R value of short-circuit testing circuit and the closing phase angle have effects on the short-circuit electromotive force. The testing circuit parameters should be adjusted before short-circuit testing, so as to make sure that at least one phase reaches the peek short-circuit current and then the electromotive forces reach the expected target value.
Key words: nuclear power plant; medium-voltage electric penetration assembly; electromotive force; short-circuit testing
參考文獻
[1] IEEE Std 317-2013 IEEE Standard for Electric Penetration Assembliesin Containment Structures for Nuclear Power Generating Stations[S].
[2] IEEE Std C37.09-1999 IEEE Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis[S].
