Abstract:

It is urgent demand for the evaluation and control of power grid operation to establish a set of scientific, systematic and reasonable index system. This paper discussed how to establish the index system according to the operation demand of transmission network, which could effectively evaluate the grid status and provide assistant decision-making information； made clear the purpose of constructing the index system for grid operation； expounded the main architecture and implementation ideas of the index system. The index system evaluated the transmission network operation from two levels: the results and the reasons, which not only reflected whether the current operating status of transmission network were satisfied, but also explored the reasons of unsatisfied states of transmission network. The result evaluation analyzed the demands of main stakeholders of transmission network, including the satisfaction degree of both external demand and internal demand. Based on the methods of decomposition and transformation, the reason evaluation provided the decomposition index for each result evaluation index, constructed the strategy chain corresponding to the result evaluation index, and proposed the method of strategy evaluation, in order to find the weaknesses in grid operation. Then, the principles and methods of index selection were proposed for the index system. The index system designed based on the proposed architecture, has the advantages of obvious hierarchy, clear index relationship, close contact with the main business of dispatch center, which can provide guidance for the dispatchers and the system to make the control decisions.

Key words: operational evaluation for power grid, index system, transmission network operation, closed-loop control, architecture