摘要
通过对IEEE13节点配网模型进行改造,设计了能够提高城市供电可靠性和提升供电电能质量的交直流配电网模型。同时为了防止多端直流输电过程中交流系统故障引起直流母线电压波动造成系统失稳的现象发生,设计了基于无模型自适应技术的电压源型变换器(VSC)。利用无模型自适应控制技术不需要控制系统数学模型就可以达到良好控制效果的优势,解决了供电系统交流侧发生故障时,由于系统参数变化过大传统PID调节器不能达到预想控制效果的问题。通过对系统常见异常运行工况的数字仿真分析,验证了所设计的无模型自适应控制器的有效性以及交直流配电网模型的合理性。
Characteristics of urban power supply system are analyzed. With improvement on IEEE-13 distribution system, a distribution system model is designed to improve system supply reliability and power quality. In order to prevent muhi-tcrminal HVDC system instability caused by faults on AC end, a model-free adaptive control （MFAC） technology is proposed. When AC system fault occurs, traditional PID controller has bad periormance due to large system parameter disturbance. The DSC inverter controller based on MFAC technology discards need of detailed control system model without losing eontrol capability. Simulation results under different abnormal operating conditions verify feasibility and effectiveness of proposed design.
出处
《中国电力》
CSCD
北大核心
2016年第9期46-50,共5页
Electric Power
基金
河南省高等学校重点科研项目计划(14B510026)~~
关键词
多端直流
城市供电
VSC
无模型自适应
交直流配电网
multi-terminal DC
urban power supply
VSC
model-free adaptive
AC-DC hybrid power distribution
