促进分布式电源消纳的主动配电网暂稳态联合优化
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摘要
由于分布式电源(DG)出力的波动性以及渗透率的逐步提高,对电压质量和配电设备的适应性提出新的挑战,其中电压偏差与波动以及保护装置误动作是限制DG准入容量的主要因素。针对上述问题,提出以DG的选址定容作为上层优化模型,以DG逆变并网功率解耦的无功调节与主动管理措施相配合的调节方法作为下层优化模型,构建促进DG消纳的双层优化模型。在获取稳态准入容量的同时,对故障状态下该准入容量对保护装置适应性进行校验,并对各模块的薄弱环节提出相应的改进措施,形成稳态与暂态联合优化,实现DG的最大化消纳,最后通过IEEE-33节点算例证明所提方案的有效性。
Due to the distributed generation output fluctuations and the gradual increase in permeability,power quality and power equipment adaptability face new challenges.The voltage limit and the protection device malfunction are the main factors limiting the allowed penetration level of DG.In view of the above problems,this paper proposed a voltage regulation method which uses the reactive power regulation of DG inverter grid-connected power decoupling cooperated with the active management measures.When the allowed penetration level in steady state is obtained,the adaptability of the allowed penetration level to protection device in the fault condition is verified,and the improvement measures of the weak links of each module are put forward to form a joint optimization of the steady-state and transient-state,which realizes the maximization penetration level of DG,and finally the effectiveness of the scheme was proved by an in IEEE-33 node example.
Due to the distributed generation output fluctuations and the gradual increase in permeability,power quality and power equipment adaptability face new challenges.The voltage limit and the protection device malfunction are the main factors limiting the allowed penetration level of DG.In view of the above problems,this paper proposed a voltage regulation method which uses the reactive power regulation of DG inverter grid-connected power decoupling cooperated with the active management measures.When the allowed penetration level in steady state is obtained,the adaptability of the allowed penetration level to protection device in the fault condition is verified,and the improvement measures of the weak links of each module are put forward to form a joint optimization of the steady-state and transient-state,which realizes the maximization penetration level of DG,and finally the effectiveness of the scheme was proved by an in IEEE-33 node example.
引文
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[11] 郭丽伟,薛永端,张林利,等.含分布式电源的小电阻接地方式配电网单相接地故障分析,电力系统自动化,2015,39(20):116-123.
[12] 王鹤,李国庆,李耀峰,等.多逆变型分布式电源协调的微电网谐波控制方法[J].电力系统自动化,2014,38(23):33-39.
[13] 钟清,高新华,余南华,等.谐波约束下的主动配电网分布式电源准入容量与接入方式[J].电力系统自动化,2014,38(24):108-113.
[14] 章力,高元海,熊宁,等.考虑潮流倒送约束的分布式光伏电站选址定容规划[J].电力系统自动化,2014,17(38):43-47.
[15] 张晓英,王琨,张蜡宝.基于切片采样的风力发电并网系统概率潮流计算[J].电力自动化设备,2016,31(23):100-106.
[16] 刘吉臻,孟洪民,胡阳.采用梯度估计的风力发电系统最优转矩最大功率点追踪效率优化[J].中国电机工程学报,2015,35(10):2367-2374.
[17] 邹宏亮,韩翔宇,廖清芬,等.考虑电压质量与短路容量约束的分布式电源准入容量分析[J].电网技术,2016,8:2273-2278.
[2] 刘科研,刘永梅,盛万兴.考虑电压约束的分布式电源接入配电网最大准入容量计算方法[J].电力自动化备,2016,36(6):81-87.
[3] 邢海军,程浩忠,曾平良.基于二阶锥规划的间歇性分布式电源消纳研究[J].电力自动化设备,2016,36(6):74-80.
[4] 刘长运,谢卫华,王雷涛,等.基于分层储能的主动配电网需求侧管理系统研究与设计[J].电器与能效管理技术,2018(2):37-42.
[5] 易海川,张彼德,吴宇,等.提高DG接纳能力的配电网动态重构方法[J],电网技术,2016,40(5):1431-1435.
[6] 范元亮,赵波,江全元,等.过电压限制下分布式光伏电源最大允许接入峰值容量的计算[J].电力系统自动化,2012,36(17):40-44.
[7] HU B,NONAKY Y,YOKOYAMA R.Influence of large-scale grid-concerned photovoltaic system on distribution network [J].Automation of electric power system,2012,36(3):34-38.
[8] 王江海,邰能灵,宋凯,等.考虑继电保护动作的分布式电源在配电网中的准入容量研究[J].中国电机工程学报,2010,40(22),37-42.
[9] 于辉,王心,赵冬梅.以改造配电网设备适应性为目的分布式电源准入容量计算[J].电网技术,2016,40(10),3013-3017.
[10] 郭文明,牟龙华.考虑灵活控制策略及电流限幅的逆变型分布式电源故障类型[J].中国电机工程学报,2015,25(24):6359-6367.
[11] 郭丽伟,薛永端,张林利,等.含分布式电源的小电阻接地方式配电网单相接地故障分析,电力系统自动化,2015,39(20):116-123.
[12] 王鹤,李国庆,李耀峰,等.多逆变型分布式电源协调的微电网谐波控制方法[J].电力系统自动化,2014,38(23):33-39.
[13] 钟清,高新华,余南华,等.谐波约束下的主动配电网分布式电源准入容量与接入方式[J].电力系统自动化,2014,38(24):108-113.
[14] 章力,高元海,熊宁,等.考虑潮流倒送约束的分布式光伏电站选址定容规划[J].电力系统自动化,2014,17(38):43-47.
[15] 张晓英,王琨,张蜡宝.基于切片采样的风力发电并网系统概率潮流计算[J].电力自动化设备,2016,31(23):100-106.
[16] 刘吉臻,孟洪民,胡阳.采用梯度估计的风力发电系统最优转矩最大功率点追踪效率优化[J].中国电机工程学报,2015,35(10):2367-2374.
[17] 邹宏亮,韩翔宇,廖清芬,等.考虑电压质量与短路容量约束的分布式电源准入容量分析[J].电网技术,2016,8:2273-2278.