首页|Integrated Frequency-constrained Scheduling Considering Coordination of Frequency Regulation Capabilities from Multi-source Converters

Integrated Frequency-constrained Scheduling Considering Coordination of Frequency Regulation Capabilities from Multi-source Converters

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As the proportion of renewable energy(RE)in-creases,the inertia and the primary frequency regulation(FR)capability of the power system decrease.Thus,ensuring fre-quency security in the scheduling model has become a new tech-nical requirement in power systems with a high share of RE.Due to a shortage of conventional synchronous generators,the frequency support of multi-source converters has become an in-dispensable part of the system frequency resources,especially variable-speed wind turbine generation(WTG)and battery en-ergy storage(BES).Quantitative expression of the FR capabili-ty of multi-source converters is necessary to construct frequen-cy-constrained scheduling model.However,the frequency sup-port performance of these converter-interfaced devices is relat-ed to their working states,operation modes,and parameters,and the complex coupling of these factors has not been fully ex-ploited in existing models.In this study,we propose an integrat-ed frequency-constrained scheduling model considering the co-ordination of FR capabilities from multi-source converters.Switchable FR control strategies and variable FR parameters for WTG with or without reserved power are modeled,and multi-target allocation of BES capacity between tracking dis-patch instruction and emergency FR is analyzed.Then,the vari-able FR capabilities of WTG and BES are embedded into the integrated frequency-constrained scheduling model.The nonlin-ear constraints for frequency security are precisely linearized through an improved iteration-based strategy.The effectiveness of the proposed model is verified in a modified IEEE 24-bus standard system.The results suggest that the coordinated par-ticipation of BES and WTG in FR can effectively reduce the cost of the scheduling model while meeting frequency security constraints.

Battery energy storage(BES)wind turbine generation(WTG)frequency regulation(FR)frequency securi-typower system scheduling

Jiaming Li、Ying Qiao、Zongxiang Lu、Wei Ma、Xin Cao、Rongfu Sun

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Depart-ment of Electrical Engineering,Tsinghua University,Beijing 100084,China

China Suntien Green Energy Limited Company,Shijia-zhuang 050011,China

State Grid Jibei Electric Power Company,Beijing 100054,China

National Key Research and Development Program of ChinaScience and Technology Project of State Grid Corporation of China

2021YFB2400500

2024

10.35833/MPCE.2022.000717

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ISSN：
年,卷(期)：2024.12(1)
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