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。
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.
除了来源不稳定之外，任何一种可再生能量项目的最大困难在于实实在在地将能容与传统电网紧密结合起来。
One of the biggest challenges of any renewable energy project, aside from the intermittent nature of the fuel involved, is actually hooking that capacity into the traditional gridlines.
我们对于输电网与不稳定的再生性能源的适应性问题束手无策的一个原因，是我们始终对于太阳能电池板如何运行的科技研究一片空白。
But one reason it's not clear how to adapt the electricity grid to the intermittency of renewables is we're still missing information about how technologies like solar panels behave.
分析了高校现有供电网络存在的效率低、能耗大和供电质量不稳定的问题。
The paper discusses the problems regarding the low efficiency and unstable quality of the power supply in the electric network at universities.
自二十世纪七十年代以来，由于电力电子器件及其它非线性负荷在电网中大量的投入使用，使电网的非线性、不稳定性和不对称性日趋严重。
Since 1970s, the nonlinear, the instability and theunbalance of the voltage have become more and more serious due to the electronic device and other nonlinear load in power network.
自二十世纪七十年代以来，由于电力电子器件及其它非线性负荷在电网中大量的投入使用，使电网的非线性、不稳定性和不对称性日趋严重。
Since 1970s, the nonlinear, the instability and theunbalance of the voltage have become more and more serious due to the electronic device and other nonlinear load in power network.
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