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1.新能源电力系统国家重点实验室(华北电力大学),北京市 102206
2.国网上海松江供电公司,上海市 201600
张海波(1975—),男,博士,教授,主要研究方向:电力系统调度自动化、电力系统分析、控制与仿真。E-mail:zhb@ncepu.edu.cn
申杰(1996—),男,通信作者,硕士,主要研究方向:电力系统优化调度。E-mail:sjdcr123@163.com
王国荣(1998—),女,硕士研究生,主要研究方向:储能规划。E-mail:wgr1212@163.com
收稿:2021-04-06,
修回:2021-11-16,
网络出版:2022-02-23,
纸质出版:2022-04-25
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张海波,申杰,王国荣等.考虑无功设备动作的交直流电网日前两阶段随机优化调度[J].电力系统自动化,2022,46(8):133-142.
ZHANG Haibo,SHEN Jie,WANG Guorong,et al.Day-ahead Two-stage Stochastic Optimal Dispatch of AC/DC Power Grid Considering Reactive Power Equipment Operation[J].Automation of Electric Power Systems,2022,46(8):133-142.
张海波,申杰,王国荣等.考虑无功设备动作的交直流电网日前两阶段随机优化调度[J].电力系统自动化,2022,46(8):133-142. DOI: 10.7500/AEPS20210406006.
ZHANG Haibo,SHEN Jie,WANG Guorong,et al.Day-ahead Two-stage Stochastic Optimal Dispatch of AC/DC Power Grid Considering Reactive Power Equipment Operation[J].Automation of Electric Power Systems,2022,46(8):133-142. DOI: 10.7500/AEPS20210406006.
中国大型风电基地大多位于西北内陆地区,需要通过高压直流传输进行跨区消纳。为了应对风电输出的不确定性并提升风电消纳水平,传统基于电网换相换流器的高压直流需要根据风电出力变化而进行有功调节,但若不加以控制,可能会引起直流无功调节设备的频繁动作,不利于直流系统的稳定运行。基于两阶段随机规划建立了交直流互联电网日前两阶段随机优化调度模型,充分考虑了实时日前计划的可行性。模型将直流功率视为灵活调节的资源,并引入换流站稳态运行模型描述直流无功功率特性以准确地限制无功设备的动作。针对模型的非线性,采用一阶泰勒展开对换流站稳态运行模型进行线性化,并验证了线性化的精度。最后,通过风电直流外送系统验证了优化调度策略的有效性。
The large-scale wind power bases are mostly located in the inland of northwest China
which require cross-regional accommodation through high voltage DC transmission. To deal with the uncertainty of wind power output and improve the wind power accommodation level
the traditional line commutate converter based high voltage DC needs active power regulation according to the change of wind power output. However
if it is not well controlled
it may cause frequent operation of DC reactive power regulation equipment
which is not conducive to the stable operation of the DC system. A day-ahead two-stage stochastic optimal dispatch model of AC/DC interconnected power grid is established based on the two-stage stochastic programming
which fully considers the feasibility of real-time day-ahead plans. The DC power is regarded as a flexible resource and the steady-state operation model of converter stations is introduced to describe the DC reactive power characteristics to accurately limit the operation of reactive power equipment. Aiming at the nonlinearity of the model
the first-order Taylor expansion is used to linearize the steady-state operation model of converter stations
and the accuracy of the linearization is verified. Finally
the effectiveness of the optimal dispatch strategy is verified by the wind power DC transmission system.
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关于印发国家电网公司输变电工程提高设计使用寿命指导意见的通知 [EB/OL].[ 2021-05-31 ]. https://max.book118.com/html/2017/1102/138530140.shtm https://max.book118.com/html/2017/1102/138530140.shtm .
Notice on printing and distributing guidelines on improving design service life of power transmission and transformation projects of State Grid Corporation of China [EB/OL]. [ 2021-05-31 ]. https://max.book118.com/html/2017/1102/138530140.shtm https://max.book118.com/html/2017/1102/138530140.shtm .
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