调匝式消弧线圈自动调谐新方法  

New Automatic Tuning Method for Multi-tap Arc-suppression Coil

作　　者：陈忠仁[1] 吴维宁[2] 张勤[2] 陈家宏[2] 

机构地区：[1]中山职业技术学院,广东省中山市528404 [2]武汉高压研究所,湖北省武汉市430074

出　　处：《电力系统自动化》2005年第24期75-78,共4页Automation of Electric Power Systems

摘　　要：对调匝式消弧线圈的自动调谐,提出了利用谐振法结合曲线拟合法测量电容电流的新方法: 找出谐振点左右的3点,代入拟合曲线方程,求出谐振点的感抗值(等于系统容抗),由此求出电容 电流。该方法具有状态识别功能,能区分线路投切状态和调谐状态,无需相互通信便可实现变电站 内部和变电站之间的多台消弧线圈的自动并联。模拟电网试验和现场运行试验结果令人满意。A new tuning method for multi-tap arc-suppresston coils, viz. resonance method integrated with curve-fitting technique, is proposed in this paper. Firstly, arc-suppression coils are adjusted to detect voltage of its 3 taps near the system resonance point. Then the curve-fitting equation is replaced with the voltage and the inductive reactance of the taps, and the inductive reactance on the resonance point is obtained. Hence the capacitive current is calculated. The proposed method can distinguish the switching state from the tuning one of the system with the function of status identification. Thus it is easy to realize automatic parallel operation of arc-suppression coils at one substation or among different substations without communication. Experimental and operating results in this paper show its feasibility of the proposed method.

关 键 词：调匝式 消弧线圈 自动调谐 谐振法 曲线拟合法 

分 类 号：TM475[电气工程—电器]