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计及电网结构参数变化的有功静态安全域快速构建方法
Fast Construction Method of Active Power Steady-state Security Region Considering Variation of Structural Parameter in Power Grid
- 电力系统自动化-方正平台 2020年44卷第8期 页码：108-115
- 作者机构：
1.武汉大学电气与自动化学院，湖北省武汉市 430072
2.国网湖北省电力有限公司电力科学研究院，湖北省武汉市 430077
3.国家电网公司华中分部，湖北省武汉市 430077
- 作者简介：
杜蕙（1994—），女，博士研究生，主要研究方向：电力系统运行与控制。E-mail：duhui1994@hotmail.com
林涛（1969—），男，通信作者，博士，教授，博士生导师，主要研究方向：电力系统运行与控制、电力系统继电保护与自动装置、新能源发电与智能电网、电能质量分析与控制。E-mail：tlin@whu.edu.cn
陈汝斯（1991—），男，博士，主要研究方向：电力系统运行与控制。E-mail：923090828@qq.com
- 基金信息：国家重点研发计划资助项目(2017YFB0902600);国家电网公司科技项目(SGJS0000DKJS1700840)
DOI：10.7500/AEPS20190709007
中图分类号：收稿日期：2019-07-09，
修回日期：2019-09-22，
网络出版日期：2020-03-12，
纸质出版日期：2020-04-25
- 稿件说明：
移动端阅览
杜蕙,林涛,陈汝斯等.计及电网结构参数变化的有功静态安全域快速构建方法[J].电力系统自动化,2020,44(8):108-115.
DU Hui,LIN Tao,CHEN Rusi,et al.Fast Construction Method of Active Power Steady-state Security Region Considering Variation of Structural Parameter in Power Grid[J].Automation of Electric Power Systems,2020,44(8):108-115.
杜蕙,林涛,陈汝斯等.计及电网结构参数变化的有功静态安全域快速构建方法[J].电力系统自动化,2020,44(8):108-115. DOI： 10.7500/AEPS20190709007.
DU Hui,LIN Tao,CHEN Rusi,et al.Fast Construction Method of Active Power Steady-state Security Region Considering Variation of Structural Parameter in Power Grid[J].Automation of Electric Power Systems,2020,44(8):108-115. DOI： 10.7500/AEPS20190709007.
摘要
注入功率空间有功静态安全域（APSSR）表征了在给定网络结构下电力系统安全稳定运行的注入功率可行域，有助于电网在线安全评估和预防控制。随着以可控串联补偿器(TCSC)、统一潮流控制器为代表的柔性交流输电装置的接入，电网结构参数连续可调。传统的APSSR构建方法基于固定结构参数得到，电网结构参数频繁调整时计算速度受限于高维导纳矩阵的求逆运算
难以满足在线应用的需要。为此
以TCSC为例进行研究，将电网结构参数变化对潮流分布的影响转化为修正节点注入功率，构建了计及电网结构参数的APSSR超平面边界系数矩阵的显式表达式，为APSSR的快速构建和在线应用提供了一种可行思路。进一步，针对APSSR安全裕度评估对电力系统预防控制和结构参数优化两方面的指导作用进行了分析。最后，基于多个不同规模、不同数量TCSC的IEEE算例，验证了所提方法的正确性和在计算效率方面的优越性，并以某省级电网500 kV输电线路为例进一步对所提方法的应用价值进行说明。
Abstract
Active power steady-state security region (APSSR) represents feasible region of injection power for safe and stable operation with the given power grid structure
which is conducive to online security assessment and preventive control. With connecting flexible alternative current transmission devices such as thyristor controlled series compensations (TCSCs) and unified power flow controllers (UPFCs)
structural parameters in power grid is becoming continuously adjustable. The construction method of traditional APSSR is obtained based on the fixed structural parameters. Calculation speed is limited by inversion of operation high-dimensional parametric matrix when the structural parameters are frequently adjusted and hard to satisfy the demand of online applications. For the above problems
the research is carried out with TSCS as an example
the influence of structural parameter variation in power grid on power flow distribution is transferred into modifying the bus injection power
and explicit expression of hyperplane boundary coefficient matrix for APSSR is constructed considering structural parameters in the power grid
which provides an available idea for fast construction of APSSR and online application. Furthermore
the instructional role of safety margin assessment in two aspects such as preventive control of power system and structural parameter optimization is analyzed. Finally
based on IEEE cases with different grid scales and TCSC quantities
the effectiveness of proposed method and superiority in computational efficiency are verified
the application value is further illustrated by an example of 500 kV transmission line in provincial grid.
关键词
Keywords
references
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