电力系统动态仿真准确度综合评估方法  

Comprehensive Evaluation Method for the Power System Dynamic Simulation Accuracy

作　　者：滕苏郸 张文朝[1,2] 顾雪平[1] 刘翔宇[1] 

机构地区：[1]华北电力大学电气与电子工程学院,保定071003 [2]国网电力科学研究院,南京210003

出　　处：《电力系统及其自动化学报》2014年第8期54-59,共6页Proceedings of the CSU-EPSA

摘　　要：为了克服现有全网仿真准确度评估方法上的不足,该文针对电网中发生概率较高的线路故障,选取了工程上最关注的典型电气量,在分析所选电气量动态特征的基础上,采取分时段研究的方法,针对不同时段分别提出相应的仿真误差评价指标。并根据各个阶段仿真与实测数据之间的平均误差将不同时段的指标合成,从而对电气量整体的仿真准确度给出了客观的评价。结合电气量变化特性,由单一元件的仿真准确度评估进一步扩展到对全网的仿真准确度评估,对电网模型参数的正确性给出了整体而全面的评价。通过新英格兰10机39节点系统算例验证了所提指标与方法的合理性。In order to overcome the shortcomings of accuracy caused by existing assessment methods for power system dynamic simulation, this paper focuses on the permanent single phase short-circuit fault which occurs with large proba- bility in power grids, and selects the typical electrical variables which are most frequently concerned in engineering af- ter the fault happened. A time-scale based error criteria on simulation validation is proposed, and a comprehensive er- ror criterion according to the average errors between simulation data and actual data is proposed to evaluate objectively the simulation accuracy of the typical electrical variables. Considering the variation characteristics of the electrical vari- ables, the simulated accuracy evaluation of single electrical element is generalized to the simulated accuracy evaluation of the holistic network, hence not only the comprehensive evaluation about the model and its parameters but also the in- formation for model modification and parameter correction can be obtained. The effectiveness of the proposed method is verified by the numerical results of the New England 10 Unit 39 Bus powers system.

关 键 词：动态仿真 仿真准确度 相似度指标 电力系统 

分 类 号：TM743[电气工程—电力系统及自动化]