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1.浙大城市学院信息与电气工程学院,浙江省杭州市 310015
2.浙江大学电气工程学院,浙江省杭州市 310027
Received:01 June 2021,
Revised:2021-12-26,
Published Online:10 March 2022,
Published:10 May 2022
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李静,杨鹏程,韦巍等.交直流混联配用电系统多模式减排调控策略[J].电力系统自动化,2022,46(9):52-60.
LI Jing,YANG Pengcheng,WEI Wei,et al.Regulation and Control Strategy of Multi-mode Emission Reduction for Hybrid AC/DC Power Distribution and Consumption System[J].Automation of Electric Power Systems,2022,46(9):52-60.
李静,杨鹏程,韦巍等.交直流混联配用电系统多模式减排调控策略[J].电力系统自动化,2022,46(9):52-60. DOI: 10.7500/AEPS20210601003.
LI Jing,YANG Pengcheng,WEI Wei,et al.Regulation and Control Strategy of Multi-mode Emission Reduction for Hybrid AC/DC Power Distribution and Consumption System[J].Automation of Electric Power Systems,2022,46(9):52-60. DOI: 10.7500/AEPS20210601003.
新能源分布式发电是比较成熟且成本可控的减碳方案。在“双碳”目标推动下,大量分布式电源(DG)的广泛接入给配电网调控带来巨大挑战。为了缓解调控压力、优化DG出力以节能减排,将低压侧改为直流配电便于DG高效接入,并设计低压分散式-中压集中式的分层调控与多模式减排控制框架:针对接入低压直流侧的DG,提出计及度电碳排放的分散式功率优化与减排控制,DG不需要通信便可优化其出力从而减小直流系统碳排放量;针对中低压间的交直流换流器,提出多模式控制,可使直流系统实现定功率上送、最优减排以及定额碳排放等功能,并实现无缝切换。综合调控系统仅需采集交直流换流器的信息便可获知所有DG碳排放以及出力等全局信息,便于系统级的统筹减排与优化运行。仿真结果验证了所提策略的有效性,为大量DG接入下的高效减排调控提供了有益参考。
Distributed generation for renewable energy is a relatively mature carbon reduction scheme with controllable costs. Driven by the goal of carbon emission peak and carbon neutrality
the extensive access of a large number of distributed generators (DGs) brings great challenges to the regulation and control of distribution networks. In order to relieve the regulation and control pressure and optimize the DG output for energy saving and emission reduction
the low-voltage side is changed to DC power distribution to facilitate efficient access of DGs. And a framework of low-voltage decentralized and medium-voltage centralized hierarchical regulation and control and multi-mode emission reduction control is designed. For the DG connected to the low-voltage DC side
the decentralized power optimization and emission reduction control are proposed considering the carbon emission per 1 kW·h. The DG can optimize its output without communication to reduce the carbon emission of the DC system. For the AC/DC converter between medium- and low-voltage
the multi-mode control is proposed to enable the DC system to realize the functions such as constant power supply
optimal emission reduction and rated carbon emission
and achieve seamless switching. The integrated regulation and control system only needs to collect the information of the AC/DC converter to obtain the global information of all DG carbon emissions and outputs
which is convenient for system-level integrated emission reduction and optimal operation. Simulation results verify the effectiveness of the proposed strategy
which provides a useful reference for the effective emission reduction regulation and control with the access of a large number of DGs.
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