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基于全系统可靠性评估方法的海上油田群电网可靠性评估
作者:
作者单位:

1.西安交通大学电气工程学院,陕西省西安市710049;2.中海油研究总院有限责任公司,北京市100028

作者简介:

杜伟(1994—),男,通信作者,硕士研究生,主要研究方向:电力系统可靠性。E-mail:weidu7048@stu.xjtu.edu.cn
罗先觉(1957—),男,教授,博士生导师,主要研究方向:电力系统可靠性。E-mail:luoxj@mail.xjtu.edu.cn
王秀丽(1961—),女,教授,博士生导师,主要研究方向:电力系统可靠性。E-mail:xiuliw@mail.xjtu.edu.cn

通讯作者:

基金项目:

国家重点研发计划资助项目(2018YFB0904800)。


Reliability Evaluation on Power System of Offshore Oilfield Group Based on System-wide Reliability Evaluation Method
Author:
Affiliation:

1.School of Electrical Engineering, Xi’an Jiaotong University, Xi’an710049, China;2.China National Offshore Oil Corporation Research Institute Company Limited, Beijing100028, China

Fund Project:

This work is supported by National Key R&D Program of China (No. 2018YFB0904800).

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    摘要:

    海上油田群电力系统可靠性的优劣显著影响石油生产。考虑到该类电力系统是一个包含发电、输电、变电、配电系统的独立电力系统,故障时切负荷措施也不同于陆上电力系统,因此传统可靠性评估的模型和算法不能直接使用。文中基于全系统可靠性评估理论提出一种海上油田群电力系统可靠性评估方法,并建立了全系统可靠性指标体系。在状态采样时,根据全系统可靠性评估理论将全系统分为发输电系统采样和配电系统采样,并建立综合评估方法。在发输电系统状态评估中,考虑到海上油田群电网及其负荷的特点,建立基于优先脱扣的切负荷模型。在配电系统状态评估中,考虑了级联故障的影响。最后以某油田群电力系统为实际算例,得出全系统指标并分析4类故障的影响,验证了所提方法的正确性和有效性。

    Abstract:

    The reliability of power system of offshore oilfield group has a significant impact on the oil production. Considering that this kind of power system is an independent power system including generation, transmission and distribution systems, and load shedding measures are different from those of onshore power system when a fault occurs, the traditional reliability evaluation model and algorithm cannot be applied directly. A reliability evaluation method is proposed for offshore oilfield power system based on the system-wide reliability evaluation theory, and an index system is set up for the system-wide reliability. During the state sampling, the whole power system sampling can be divided into generation and transmission system sampling and distribution system sampling according to the system-wide reliability evaluation theory, and the comprehensive evaluation method can be established. In the state evaluation of generation and transmission system, the load curtailment model based on priority trip is constructed considering the characteristics of offshore power system and its load. In the state evaluation of distribution system, the effects of cascading failure are taken into consideration. Finally, evaluation is conducted on a practical example of an offshore oilfield power system. The system-wide indices are obtained and the influences of the four kinds of failures are analyzed to prove the correctness and effectiveness of the proposed method.

    表 1 全系统可靠性指标Table 1 System-wide reliability index
    表 5 部分平台脱扣顺序Table 5 Release order of partial platforms
    表 2 设备及所属系统Table 2 Equipment and its affiliated system
    表 4 元件可靠性参数Table 4 Component reliability parameters
    表 8 Table 8
    表 7 环网前后全系统指标对比Table 7 System-wide index comparison before and after network ringing
    图1 各系统划分示意图Fig.1 Schematic diagram of system partition
    图2 某油田群电网实际拓扑Fig.2 Actual topology of power grid of an oilfield group
    图3 油田群环网图Fig.3 Ring network diagram of oilfield group
    图 前1000采样方差系数图Fig. Variance coefficient chart of the first 1000 sampling
    图 前10000采样方差系数图Fig. Variance coefficient chart of the first 10000 sampling
    图 故障概率EPSF与切负荷概率EPLC对比Fig. Comparing EPSF with EPLC
    表 3 某油田群冬季大方式计算条件Table 3 Calculation conditions in winter of an oilfield group
    表 6 各系统故障指标Table 6 Indices of system failure
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引用本文

杜伟,罗先觉,王秀丽,等.基于全系统可靠性评估方法的海上油田群电网可靠性评估[J].电力系统自动化,2020,44(12):108-116. DOI:10.7500/AEPS20190528010.
DU Wei,LUO Xianjue,WANG Xiuli,et al.Reliability Evaluation on Power System of Offshore Oilfield Group Based on System-wide Reliability Evaluation Method[J].Automation of Electric Power Systems,2020,44(12):108-116. DOI:10.7500/AEPS20190528010.

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  • 收稿日期:2019-05-28
  • 最后修改日期:2019-10-14
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  • 在线发布日期: 2020-06-18
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