电力系统通用安控策略整定方法的研究

为解决当前查表式安控策略存在的严重故障计算量大、整定和维护复杂的问题,提出了一种基于公式计算的通用安控策略整定方法。针对不同网架结构下可能出现的暂态稳定、动态稳定和热稳定问题,研究了不同稳定形式下的所需安控措施量及影响因素,建立了一种可修订参数的反映电网安控量与断面潮流关系的线性模型,并提出了关键参数的整定方法。利用单机等面积定则证明了暂态稳定下断面潮流和安控量呈"凹曲线"的关系,为暂稳下关键参数的取值范围和直线模型提供了依据。实际电网应用案例表明了所提方法较传统方法整定更简便、物理意义更加清晰,具有较好的适用性。

Research on the general control strategy of power system tuning method

To solve the problems of the current security control policy of lookup table setting method which includes large amount of calculation and the complex setting and maintenance, a new general security control strategy based on formula calculator is presented. According to the stable form of transient stability, dynamic stability and thermal stability under different grid structures, the control strategy and influencing factors on the different stable forms are studied respectively, a linear model which can revise parameters is established to describe the control quantity and the section power flow value, and the tuning method of the typical key parameter is also put forward. By using single machine equal area criterion proves that the relationship between the section flow and the safety control of transient stability is "concave curve", which provides a basis for the range of key parameters and the linear model of transient stability. Practical application case shows that the proposed control strategy model is more convenient and has clearer physical significance compared with the traditional method, which has great application.