New concepts of top point load, arc load, top point state, net shape, net base, dissipated net andopencircuitvariable structure net are introduced into distribution net.
在配电变结构耗散网络中引入顶点负荷、负荷、点状态、形、基、散网络、环变结构网络等新概念。
2
The characteristics of arc furnace are low voltage, big current and nonlinear load. Much negative sequence current is produced during running. As a result, the power net is unstable.
电弧炉具有低电压、大电流而且负荷非线性的特点，在其运行过程中产生大量的负序电流，导致电网不稳定。
3
Besides blowing out of arc principle of arc suppression coil and function principle of compensated electric net are explained.