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事故备用分散转移的实现方式
作者:
作者单位:

1.上海交通大学电子信息与电气工程学院;2.国网上海市电力公司浦东供电公司;3.国网湖南省电力有限公司 电力调度控制中心;4.电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系)

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基金项目:

国家自然科学基金“促进高比例新能源消纳的大规模需求响应机制与机理研究”(51877134),国家自然科学基金


Realization Mode of Decentralized Transfer of Contingency Reserve
Author:
Affiliation:

1.Key Laboratory of Control of Power Transmission and Conversion (Shanghai Jiaotong University);2.Pudong Power Supply Company of State Grid, Pudong New District

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    摘要:

    由于事故备用通常由传统机组承担,随着可再生能源渗透率提高,系统事故备用日趋短缺,安全性面临巨大挑战。为了解决该问题,我们提出了事故备用分散转移(decentralized transfer of contingency reserve,DTCR)的实现方式,能够支持发电侧事故备用向用电侧分散转移。本文首先给出了DTCR系统设计和关键技术。其次,重点提出了一种支持DTCR的毫秒级电器级负荷频率控制方法,其核心是三阶段响应策略:瞬时保守响应(instantaneous conservative response,ICR)、可靠延时响应和最优动态控制。为了兼顾ICR的瞬时性和准确性,提出了一种考虑电器优先级和功率差异的本地侧零通信主动响应形式。为了增强ICR的试错能力,提出了保守响应量的整定公式,能够利用最少负荷资源避免频率低于危险阈值,同时最小化误动作带来的频率冲击。最后,通过修改的IEEE39节点系统仿真验证了本文方法的有效性。DTCR方案有助于缓解事故备用负担,提升系统安全性。

    Abstract:

    With the increasing penetration of renewable energy, the system reserve is seriously of shortage and the security and economy are facing enormous challenges. To solve this problem, the realization method of decentralized transfer of contingency reserve (DTCR) is proposed in this paper, to support the transfer of contingency reserve from supply side to demand side. Firstly, the system design and key technologies of DTCR are given. Then, the millisecond-level appliance-level frequency control method is proposed to support DTCR. The core is the three-stage response strategy, including instantaneous conservative response (ICR), reliable latency response and optimal dynamic control. To balance instantaneity and accuracy of ICR, the local-side zero-communication active response is presented, considering the load priority and power difference. Moreover, to enhance the trial-and-error ability of ICR, the setting formula of conservative response capacity is proposed to avoid frequency from the dangerous threshold and meanwhile minimize the impact caused by mis-shedding. Finally, the effectiveness of the proposed method is verified by the simulation of a modified IEEE 39-bus system. The DTCR scheme is helpful to alleviate the reserve burden and improve the system security.

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引用本文

肖居承,何光宇,谢邦鹏,等.事故备用分散转移的实现方式[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20191027003.
XIAO Jucheng,HE Guangyu,XIE Bangpeng,et al.Realization Mode of Decentralized Transfer of Contingency Reserve[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20191027003.

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历史
  • 收稿日期:2019-10-27
  • 最后修改日期:2020-05-14
  • 录用日期:2020-03-09
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