摘要
宁东—山东直流输电工程的投运将对山东电网的安全稳定运行带来挑战,交直流系统的相互作用研究尤显重要。在PSCAD环境下,对山东电网进行了电磁暂态仿真建模,包括交流系统的等值简化建模和宁东直流系统的详细建模。对直流输电系统的静态响应特性和常见故障时暂态响应特性进行仿真分析,结果表明直流输电控制系统具有快速稳定的响应特性,验证了所建模型的正确性和有效性。并对整个山东电网的潮流分布和主要变电站母线短路电流大小进行调节和校核,使之与PSASP环境下的数据基本一致,保证了所建模型的稳态和动态特性与实际电网基本相同。
Ningdong-Shandong HVDC project will be put into operation, which is a challenge to the security and stability of Shandong power grid, so it becomes more important to research AC-DC system interaction. In PSCAD environment, the electromagnetic transient simulation model of Shandong power grid is established, including the simplified modeling of Shandong AC system and the detail modeling of Ningdong HVDC system. Based on the DC model, the static responses characteristics and transient response characteristics under common faults of DC transmission system are simulated and analyzed. The simulation results show that control system of I-IVDC transmission system has steady and fast response characteristics and also verify the correctness and validity of the established model. The power flow distribution in Shandong power grid and three phase short circuit currents of the bus in main stations are adjusted and checked to ensure that the data generally agree with the corresponding data in PSASP environment and the steady-state and dynamic characteristics of the established model are nearly the same as those in actual network.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第24期58-64,共7页
Power System Protection and Control
基金
高等学校学科创新引智计划资助项目(B08013)
