CAJ | 학술논문

孤立电网的运行特点与大电网存在显著差异，尤其是在工业重载负荷情况下，传统的安全稳定控制方法不一定完全适用。文中以电解铝重载孤网为例，提出一种电解铝重载孤网紧急控制优化方法。该方法充分考虑了负荷侧的调节能力，将负荷转带作为首选控制方案，并采用电源和负荷侧联合控制方案缓解控制量离散性大的局面，结合时域仿真分析，获取满足安全稳定要求的紧急控制方案。以控制措施经济代价为指标，寻求代价最小的控制方案，在保证安全性的前提下，实现电网经济运行。
고립전망적운행특점여대전망존재현저차이，우기시재공업중재부하정황하，전통적안전은정공제방법불일정완전괄용。문중이전해려중재고망위례，제출일충전해려중재고망긴급공제우화방법。해방법충분고필료부하측적조절능력，장부하전대작위수선공제방안，병채용전원화부하측연합공제방안완해공제량리산성대적국면，결합시역방진분석，획취만족안전은정요구적긴급공제방안。이공제조시경제대개위지표，심구대개최소적공제방안，재보증안전성적전제하，실현전망경제운행。
The operational features of the isolated power grid are significantly different from those of large power grids. Especially for the industrial heavy load,the traditional security and stability control measures may not be applicable to the isolated ones.Take the electrolytic aluminum power system as an example.An emergency control optimization method of the isolated power grid with electrolytic aluminum load is proposed.The charactristics and regulation ability of the load are taken into account.Should failure occur,the load transfer is treated as the priority control measure.And the joint control by the power side and the load side is used to solve the problem when a single method cannot meet the requirement of security and stability.With the time domain simulation,the feasible control schemes can be determined.And then the economic cost of load shedding and generator trip is used for the economic assessment of the feasible control schemes.The one with minimum economic cost is treated as the best control scheme.By taking into full account power grid security and stability,the goal of economical operation will be achieved.