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多重控制信息失效下配电网电压波动性的评估
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新能源电力系统国家重点实验室(华北电力大学)

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Evaluation of Distribution Network Voltage Fluctuation Caused by Multiple Cyber Control Failure
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State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources

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    摘要:

    随着可再生能源接入以及电压管理系统的应用,配电网愈发依赖信息通信系统,以实现对配电网的主动控制,控制信息失效必然会对系统状态造成影响。为评估信息失效对配电网电压的影响,文中首先考虑多种失效因素建立信息系统有效性模型,其次提出表征电压波动性的分布指数和越限概率指标,然后给出不同故障类型下电压波动影响的分析方法,最后采用序贯蒙特卡洛模拟进行信息系统故障下的指标评估。测试系统验证了模型可行性并探讨了不同信息失效因素对电压波动性的影响,为配电网信息物理系统的规划和运行提供了实用性技术支撑。

    Abstract:

    With the access of renewable energy and application of voltage management system, the distribution network relies more heavily on cyber system to realize active control, thus the cyber failure will inevitably affect the system state. In order to evaluate the influence of cyber failure on the voltage of distribution network, a cyber system validity model considering various cyber failure factors is firstly established. Secondly, the distribution index and over-limit probability index are introduced to demonstrate the voltage fluctuation. Then a method is presented for analyzing the influence of voltage fluctuation considering different failures. Finally indices with cyber failure are evaluated by using sequential Monte Carlo simulation. The model feasibility is verified by the test system, and the influence of different cyber failure factors on voltage fluctuation is discussed, thus providing practical technical support for the planning and operation of cyber physical distribution system.

    表 4 各情况下的指标计算结果Table 4 Calculation results of indices in different cases
    表 3 ONU故障下的指标计算结果Table 3 Calculation results of indices with ONU failure
    表 5 Table 5
    表 2 不同信息元件故障下的指标计算结果Table 2 Calculation results of indices with different element failures
    图1 信息系统建模逻辑示意图Fig.1 Schematic diagram of modeling logic for cyber system
    图2 计及信息失效的电压控制Fig.2 Voltage control considering cyber failure
    图3 改进IEEE 33节点配电系统Fig.3 Improved IEEE 33-node distribution system
    图 集中型电压控制信息物理系统的结构Fig. Structure of centralized voltage control CPS
    图 集中型电压控制流程图Fig. Flow chart of centralized voltage control
    图 指标评价方法Fig. Indices assessment method
    表 1 系统各节点指标的计算结果Table 1 Calculation result of system node indices
    表 6 Table 6
    图 随软故障率增加节点25的幅值变化Fig. Value of 25 with soft failure increase
    图 信息域各类故障原因占比Fig. Percentage of different cyber failure
    图 不同信息域失效因素引起的电压越限Fig. Violation with different cyber failure
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引用本文

刘文霞,韩辉.多重控制信息失效下配电网电压波动性的评估[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20190710002.
LIU Wenxia,HAN Hui.Evaluation of Distribution Network Voltage Fluctuation Caused by Multiple Cyber Control Failure[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20190710002.

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  • 收稿日期:2019-07-10
  • 最后修改日期:2020-01-18
  • 录用日期:2019-09-17
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