配电网电压新能源并入点位置差异控制研究
Research on Difference Control of Location of New Energy Merging Point of Distribution Network Voltage
杨巍 1沈晓明1
作者信息
- 1. 国网浙江杭州市临安区供电有限公司,浙江 临安 311300
- 折叠
摘要
新能源接入后,电压会产生不确定波动,影响配电网的稳定运行.为了防止上述现象的发生,提出1种配电网电压新能源并入点位置差异控制策略.构建高比例新能源接入的配电网模型,创新性地根据新能源并入点位置差异协调计算节点电压数值.以节点电压偏差量最小作为目标,构建配电网电压控制目标函数.在节点电压约束、容量约束、功率约束与潮流约束条件下,基于逆变器计算节点电压协调控制变量,并将该变量输入配电网控制单元.控制节点电压波动率,从而实现配电网电压的协调控制.试验结果表明:应用所提策略控制典型场景与极端场景配电网节点电压,可以有效地将电压波动率指标分别控制在0.010与0.015以下.所提策略具备较好的电压控制效果.
Abstract
After the new energy access,the voltage will produce uncertain fluctuations,affecting the stable operation of the distribution network.To prevent the occurrence of the above phenomenon,a strategy on difference control of location of new energy merging point of distribution network voltage is proposed.The distribution network model with high proportion of new energy access is constructed,and the node voltage values are coordinately calculated according to the location difference of new energy merging point in an innovative way.Taking the minimization of node voltage deviation as the goal,the distribution network voltage control objective function is constructed.Under the conditions of node voltage constraints,capacity constraints,power constraints and tidal current constraints,the coordinated control variables of node voltage are calculated based on the inverters,and the variables are input to the distribution network control unit.The node voltage fluctuation rate is controlled to realize the coordinated control of distribution network voltage.The experimental results show that by applying the proposed strategy to control the distribution network nodal voltages of typical and extreme scenarios,the voltage fluctuation rate index can be effectively controled below 0.010 and 0.015,respectively.The proposed strategy has a better voltage control effect.
关键词
新能源/配电网/电压质量/有效性评价/调压策略/目标函数/逆变器Key words
New energy/Distribution network/Voltage quality/Effectiveness evaluation/Voltage regulation strategy/Objective function/Inverter引用本文复制引用
出版年
2024
NETL
NSTL
万方数据