基于组件技术的自定义建模在电网仿真中的应用

针对目前电网仿真系统中应用的自定义建模技术存在的模型求解精度不高、跨平台调用困难等问题，通过整体联立求解法对自定义模型的求解过程进行了改进，采用组件技术与用户自定义建模相结合的方式，开发了一套控制系统的环节组件库，实现了新型的自定义建模系统。该系统允许用户对电网仿真系统中的控制装置(励磁调节器、调速器、电力系统稳定器、FACTS控制器等)进行自定义建模，所建立的自定义模型以动态调用的形式与电网仿真系统相结合，提高了电网仿真系统的可复用性、建模灵活性和可扩展性。此自定义建模系统已成功应用于中国电科院开发的电网仿真系统中，对某具体算例进行的暂态稳定仿真分析结果验证了该系统的正确性。

Application of Component Technology Based User-Defined Modeling of Control System in Power System Simulation

To solve the existing troubles in user-defined modeling for present power grid simulation systems such as low solving precision of user-defined model (UDM) and difficulty of cross-platform invocations,by means of whole simultaneous solution the solving process of UDM is improved; by use of the combination of component technology with user-defined modeling,a set of link component library of control system is developed to implement a new type of user-defined modeling system in which the user-defined modeling of control devices in power grid simulation system,including excitation regulator,speed governor,power system stabilizer (PSS) and FACTS controller and so on,is permitted,and the built UDM is integrated with power grid simulation system in the form of dynamic invocation,thus the reusability,modeling flexibility and extensibility of power grid simulation system are improved. The proposed user-defined modeling system has been successfully applied in power grid simulation system of China Electric Power Research Institute (CEPRI),and the transient stability simulation results of a certain practical case validate the correctness of the proposed user-defined modeling system.