计及发电机励磁电流约束和电枢电流约束的可用输电能力  

Available Transmission Capacity Considering Generator Excitation Current Constraints and Armature Current Constraints

作　　者：任宾 缪新民 REN Bin;MIAO Xinmin(State Grid Jiangsu Maintenance Company,Nanjing 211100,China)

机构地区：[1]国网江苏省电力有限公司检修分公司,江苏南京211100

出　　处：《电工技术》2021年第21期69-72,76,共5页Electric Engineering

摘　　要：建立了基于连续潮流的可用输电能力计算模型,在考虑系统静态电压稳定约束的基础上,同时计及电压幅值约束和热稳定约束,根据同步发电机的运行特性,计及励磁电流和电枢电流对发电机无功的影响,将越限发电机所在节点由PV节点转化为PI_(f)或PI_(a)节点,基于不同节点类型下的无功功率模型,对雅克比矩阵和连续参数的偏导数矢量进行修正。通过IEEE 30节点系统的算例仿真,验证了该模型和算法的可行性。The calculation model of available transmission capacity based on continuous power flow is established.On the basis of considering the static voltage stability constraints of the system,the voltage amplitude constraints and thermal stability constraints are considered at the same time.According to the operation characteristics of synchronous generator and considering the influence of excitation current and armature current on generator reactive power,the node where the out of limit generator is located is transformed from PV node to PI_(f) or PI_(a) node.Based on the reactive power models of different node types,the Jacobian matrix and the partial derivative vector of continuous parameters are modified.The feasibility of the model and algorithm is verified by the simulation of an IEEE 30 bus system.

关 键 词：可用输电能力 连续潮流 励磁电流约束 电枢电流约束 电压稳定约束 

分 类 号：TM74[电气工程—电力系统及自动化]