摘要
利用等值电压源方法对电压源换流器进行等效,从而导出了适合于优化计算的电压源换流器型直流输电(VSC-HVDC)系统模型。该模型能够考虑换流器的各种控制方式及运行限制,且可用于多端直流系统。建立了含有VSC-HVDC的交直流系统可用输电能力计算模型,在模型中考虑了对换流器控制变量的多种优化方式,并应用序列二次规划法对模型进行求解。通过对修改后的EPRI-36节点交直流系统进行仿真计算,验证了所提出模型的实用性及算法的有效性。
The voltage source converter is equivalently represented by voltage source model,thus the model of voltage source converter-high voltage direct current（VSC-HVDC）system suitable for optimal power flow calculation is developed.The model considers any control mode and operating limits of the converter;moreover,it could be applied to multi-terminal VSC-HVDC.The mathematical model of ATC for AC/DC systems with VSC-HVDC is set up in this paper,in which various methods for optimizing control variables of converters are considered.Sequential quadratic programming method is applied to calculate the ATC model.The modified EPRI-36 bus AC/DC system is simulated and numerical results illustrate the utility and validity of the proposed model and method.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第1期46-52,共7页
Power System Protection and Control
基金
国家自然科学基金(50977009)~~
关键词
可用输电能力
电压源换流器
交直流系统
序列二次规划法
available transfer capability
voltage source converter
AC/DC systems
sequential quadratic programming method
