CAJ | 학술논문

传统的绝缘电阻监测方法不具备实时检测的功能，特定条件下无法监测，且抗干扰能力差。具有一定的局限性。本文在分析传统绝缘电阻监测方法的基础上，提出一种注入低频交流信号的有源式绝缘电阻监测方法，基本实现了绝缘电阻的故障实时监测.该检测方法分为两个阶段：故障检测、绝缘电阻计算。其中，故障检测：通过测量“测量电阻”两端电压，计算出正、负绝缘电阻的并联电阻值，并由此判断绝缘电阻故障状态；检测出绝缘电阻故障后，进行绝缘电阻的精确测量：断开负载、交流信号源，分别与正负极绝缘电阻并联接入两个电阻并测量其两端电压，计算出正负极绝缘电阻值。仿真结果表明，故障误报率小于2.15%，基本实现了绝缘电阻的故障实时监测。这项技术能够有效保证微电网蓄电池储能电站的绝缘性能，一旦事故发生，能够及时的发现故障，排除隐患，继续安全、稳定的运行。因此对高压电池组在实际生产中有较大的应用价值和意义。
전통적절연전조감측방법불구비실시검측적공능，특정조건하무법감측，차항간우능력차。구유일정적국한성。본문재분석전통절연전조감측방법적기출상，제출일충주입저빈교류신호적유원식절연전조감측방법，기본실현료절연전조적고장실시감측.해검측방법분위량개계단：고장검측、절연전조계산。기중，고장검측：통과측량“측량전조”량단전압，계산출정、부절연전조적병련전조치，병유차판단절연전조고장상태；검측출절연전조고장후，진행절연전조적정학측량：단개부재、교류신호원，분별여정부겁절연전조병련접입량개전조병측량기량단전압，계산출정부겁절연전조치。방진결과표명，고장오보솔소우2.15%，기본실현료절연전조적고장실시감측。저항기술능구유효보증미전망축전지저능전참적절연성능，일단사고발생，능구급시적발현고장，배제은환，계속안전、은정적운행。인차대고압전지조재실제생산중유교대적응용개치화의의。
This paper proposed an active insulation detection method into which low-frequency AC signal was injected. And the method was partitioned into two detection stages:fault detection and insulation resistance calculation.In the fault detection stage,by measuring the “measurement resistance”voltage and then calculating the positive-negative parallel resist-ance value,the insulation resistance fault status of the insulation resistance can be determined.In the insulation resistance calculation stage,by disconnecting the load circuit and the AC signal source and then respectively connecting two resistors in parallel with positive and negative insulation resistance,two resistors terminal voltage can be measured and the positive and negative insulation resistance values can be calculated.Simulation results show that the failure rate of false positives is less than 2.1 5% of fault detection,and it can basically achieve a function of real-time detection in the insulation resistance detec-tion by injecting the low-frequency AC signal.