【作者】 杨炼；

【导师】 邰能灵；

【作者基本信息】 上海交通大学 ， 电气工程， 2017， 博士

【摘要】 储能系统接入配电网后,将在优化控制、选址定容和继电保护等方面带来问题。本文针对冷热电微网运行优化、配电网继电保护对电池储能系统接入的约束、距离保护的优化改进以及配电网自适应保护等方面进行了研究,主要内容包括:1,提出冰蓄冷空调系统与电池储能系统联合参与微网运行的协调控制策略。分析冰蓄冷空调的运行特性,研究含风电储能冷负荷微网的结构特性,分析在制冷主机额定功率运行及变功率运行两种模式下制冷机组与电池储能系统的容量选择策略。结合频带分区的方法,提出基于罚函数的控制算法实现调频。2,提出空气源热泵与电池储能系统协调参与微网运行的控制策略。研究含光伏储能热负荷微网的结构特性,分析空气源热泵系统的运行特性,提出空气源热泵与电池储能系统的容量选择策略,改进双模糊控制算法,有效解决微网建筑热传导特性难以准确测量等困难。3,提出电池储能系统接入配电网的选址定容方案。分析考虑电网继电保护动作对电池储能系统接入的约束条件,研究适合配电网结构特性与电网保护设计特性的编码方式。采用混沌免疫禁忌混合改进算法,计算出各节点的电池储能系统保护准入容量,对电池储能系统的选址定容进行优化,提高配电网运行的可靠性。4,研究考虑Ⅱ段距离保护可靠性的电池储能系统准入容量设计,提出距离保护的整定值修正方法。分析电池储能系统的控制策略,研究其在不同控制策略下的故障特性,分析距离保护在配电网中的应用及其动作特性,从阻抗的角度来考虑电池储能系统对距离保护的影响,提出最大范围阻抗、临点阻抗等概念,从而确定II段距离保护改进的方法。5,研究基于广域测量系统的配电网自适应保护方案。采用分层节点阻抗矩阵的构建方法,计算各馈线继电器背侧系统等效电源电压和系统等效阻抗,提出自适应电流保护方案。设计自适应保护模块架构,有效解决由于背侧系统结构的改变、运行方式的变化以及电池储能系统等分布式电源的接入对电流保护所造成的影响。最后,对全文研究内容进行了总结,并指明研究中有待解决的问题,以及进一步的研究方向。更多还原

【Abstract】 The integration of Energy Storage System(ESS)has caused problems of control,siting and sizing,relay protection and so on to smart grid.This thesis focusd on the key technologies such as energy management in cooling-heating-power microgrid,protection constraint based siting and sizing of Battery Energy Storage System(BESS),optimizing strategy of distance protection and adaptive protection scheme,to improve the reliability,stability and economy of smart grid.1.This thesis researched the structure characteristics of microgrid with wind generators,BESS and cooling load;analyzed the operation characteristics of Ice Storage Air Conditioner(ISAC),proposed the energy management and stabilizing strategy of BESS and ISAC,researched the sizing strategy of chilling pumps and BESS under the fixed capacity mode and variable capacity mode respectively;researched the frequency band dividing method,and proposed the punishing function based control algorithm to dispatch the stabilizing command.2.This thesis researched the structure characteristics of microgrid with photovoltaics,BESS and heating load;analyzed the operation characteristics of Air Source Heat Pump(ASHP),proposed the energy management and stabilizing strategy of BESS and ASHP,researched the sizing strategy of ASHP and BESS respectively;and proposed the Double Fuzzy Logic(DFL)algorithm to dispatch the stabilizing command,based on the difficulties of constructing heating model for buildings.3.This thesis researched the siting and sizing problems of BESS integrating into distributed network,analyzed the relay protection constraint to the integration,researched the coding method that is suitable to the structure characteristics of distributed network and operation characteristics of relay protection,researched the improved optimizing algorithm based on Chaotic Algorithm,Immune Algorithm and Tabu Algorithm,and calculated the Protection Access Capacity(PAC)of BESS in each node,so as to improving the reliability of the distributed network.4.This thesis researched the control strategy of BESS,analyzed the operation characteristics under different control strategies when a fault occurred in the distributed network,researched the operation characteristics of distance protection and its application in distributed network,research BESS’s impact on distance protection from the perspective of impedance,research the PAC of BESS under the constraint of Zone II distance protection,and calculated the modify coefficient for Zone II distance protection under two different conditions.5.This thesis researched the Wide Area Measurement System(WAMS)based adaptive protection scheme for smart grid,researched the building method of layer-divided node impedance matrix,calculated the equivalent voltage and impedance of upstream network,proposed an adaptive protection scheme,and designed the modules and structure of the adaptive protection,to solve the overcurrent protection problems caused by the structure change of upstream network,change of operation mode and the integration of distributed generators such as BESS.At last,This thesis summarized all the research works of this thesis,pointed out the potential problems,and the further research directions.更多还原