The Research on Automatic Restoration System in Electric Power System Failure

稳定的电力供应是支撑当前社会生活的基础，在构成电力系统的各个部门都采取了许多措施来稳定维护供电的可靠性。然而，大范围停电是由自然灾害或人为灾害造成的，即使在今天的报纸上也有报道，并有相当长的时间进行恢复。为了克服这种情况，本研究通过支持电力系统运行人员的事故恢复，对实际系统中的快速恢复进行了以下几个方面的研究。对在实际应用中达到的设计目标值首先，基于上标(1)项目的数学规划，提出了三种方案评价方法。提出了基于混合整数规划(MIP)的目标配置确定方法、线性规划与MIP相结合的目标配置确定方法以及引入“恢复性运行成本”的电力系统运营者策略。即使应用了数学规划，最终的方法也可能几乎清除作为目标网络配置准备的设计目标值的30秒。从上面的结果可以看出，利用数学规划进行恢复运算的实际应用是可能的。其次，在(2)项目的基础上，开发了基于OSF/Motif的电力系统恢复系统。该系统具有“电力系统模型准备”、“屏幕显示”、“停电识别”、“系统分析”、“目标网架结构准备”、“恢复程序准备”六大功能。

The stable supply of electric power makes the basis which supports present society activity, and many measures are done in the each department which constitutes electric power system for the stable maintenance of the supply reliability. However, the wide power cut is generated by natural or man-made disaster as reported even in today in the newspaper, and has the considerable time for the restoration. In this study, by supporting accident restoration of the power system operator in order to overcome such situation, following items were studied on the practical system for the quick restoration.1. The examination on the method for efficiently determining optimum target network configuration in about 30 seconds, which are the design objective value in the practical use, is carried out.2. The system which can evaluate the proposal method by the setting of various condition is constructed.To begin with, three methods were proposed based on the mathematical programming for the item on superscription (1). That is to say, determination method of target configuration using Mixed Integer Programming (MIP) ; the method by the combined use of Linear Programming and MIP ; the method for introduction then, the strategy of power system operator at "restorative operation cost", was proposed. It became possible that 30 seconds which are the design objective value of the preparation of target network configuration were almost cleared with the final method, even if the mathematical programming is applied. From the above result, it seemed to obtain the possibility of the practical application of restorative operation using mathematical programming.Next, power system restoration system using OSF/Motif was developed on the item on (2). This system has six functions of "power system model preparation", "screen display", "power cut identification", "system analysis", "target network configuration preparation", and "restoration procedure preparation".