基于供电能力的主动配电系统安全等级划分
发布时间：2018-07-13 19:12
【摘要】：针对主动配电系统(active distribution system,ADS)中分布式电源(distributed generation,DG)的间歇性和主动负荷及储能系统(energy storage system,ESS)的可控性特点,基于ADS的最大供电能力(ADS’s total supply capability,ATSC)提出一种评价ADS安全性的安全等级划分方法。首先,提出了节点多性质的ADS最大供电能力求解模型,引入DG及ESS的相关约束,并将其中的非线性约束转化为旋转锥的笛卡尔乘积约束形式,用锥优化方法进行快速计算。其次,基于静态安全分析定义了安全裕度、主动负荷熵、主动调节率及主动安全度指标,结合失负荷率及越限指标构成评价指标体系,进而提出了ADS安全等级划分方法,并用该方法将ADS划分为5个安全等级。用粒子群算法对主动负荷进行优化并用一致性主动控制方法制定储能系统充放电策略,应用该文提出的评价方法对比优化前后配电网的安全等级情况,验证了所提方法的实用性及有效性。
[Abstract]:In view of the intermittent and active load of distributed generation DG in active distribution system ads, and the controllability of (energy storage system of energy storage system, this paper discusses the characteristics of distributed power generation (DG) in active distribution system. Based on ads total supply capability (ATSC), this paper presents a method to evaluate the security of ads. Firstly, a multi-node model for solving the maximum power supply capacity of ads is proposed. The correlation constraints of DG and ESS are introduced, and the nonlinear constraints are transformed into the Cartesian product constraints of the rotating cone. Secondly, based on the static safety analysis, the safety margin, active load entropy, active regulation rate and active safety index are defined. The ads is divided into five security levels by this method. Particle swarm optimization algorithm is used to optimize the active load and the uniform active control method is used to formulate the charging and discharging strategy of the energy storage system. The evaluation method proposed in this paper is used to compare the security level of the distribution network before and after the optimization. The practicability and effectiveness of the proposed method are verified.
【作者单位】： 电力电子节能与传动控制河北省重点实验室(燕山大学);
【基金】：国家自然科学基金项目(61374098,61304183) 高等学校博士学科点专项科研基金资助项目(20131333110017)~~
【分类号】：TM732
本文编号：2120464
[Abstract]:In view of the intermittent and active load of distributed generation DG in active distribution system ads, and the controllability of (energy storage system of energy storage system, this paper discusses the characteristics of distributed power generation (DG) in active distribution system. Based on ads total supply capability (ATSC), this paper presents a method to evaluate the security of ads. Firstly, a multi-node model for solving the maximum power supply capacity of ads is proposed. The correlation constraints of DG and ESS are introduced, and the nonlinear constraints are transformed into the Cartesian product constraints of the rotating cone. Secondly, based on the static safety analysis, the safety margin, active load entropy, active regulation rate and active safety index are defined. The ads is divided into five security levels by this method. Particle swarm optimization algorithm is used to optimize the active load and the uniform active control method is used to formulate the charging and discharging strategy of the energy storage system. The evaluation method proposed in this paper is used to compare the security level of the distribution network before and after the optimization. The practicability and effectiveness of the proposed method are verified.
【作者单位】： 电力电子节能与传动控制河北省重点实验室(燕山大学);
【基金】：国家自然科学基金项目(61374098,61304183) 高等学校博士学科点专项科研基金资助项目(20131333110017)~~
【分类号】：TM732
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