文章摘要
杨可,谈超,王民昆,等.高比例水电多直流弱送端电网自动发电控制的优化方法[J].电力系统自动化. DOI: 10.7500/AEPS20180812011.
YANG Ke,TAN Chao,WANG Minkun, et al.Optimization Method for Automatic Generation Control in Multi-DC Weak Sending Power Grid with High Proportion of Hydropower[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20180812011.
高比例水电多直流弱送端电网自动发电控制的优化方法
Optimization Method for Automatic Generation Control in Multi-DC Weak Sending Power Grid with High Proportion of Hydropower
DOI:10.7500/AEPS20180812011
关键词: 异步联网  高比例水电  多级调度控制  自动发电控制  反馈控制  全过程动态仿真
KeyWords: asynchronous power grid  high proportion of hydropower  multi-level dispatch and control  automatic generation control (AGC)  feedback control system  full dynamic simulation
上网日期:2019-02-01
基金项目:国家重点研发计划资助项目(2017YFB0902600);国家电网公司科技项目“异步互联方式下西南电网跨层级多区域频率协调控制关键技术研究与应用”;国家电网公司西南分部科技项目“柔性直流输电系统对西南交直流混联电网运行特性影响研究”
作者单位E-mail
杨可 国家电网有限公司西南分部 180669314@qq.com 
谈超 南瑞集团(国网电力科学研究院)有限公司 tanchao@sgepri.sgcc.com.cn 
王民昆 国家电网有限公司西南分部 180669314@qq.com 
胡翔 国家电网有限公司西南分部 180669314@qq.com 
卿泉 国家电网有限公司西南分部 180669314@qq.com 
杨洋 国家电网有限公司西南分部 180669314@qq.com 
摘要:
      渝鄂背靠背柔性直流工程投运后,具备高比例水电多直流弱送端特征的西南电网规模将显著减小。结合西南电网异步试验运行情况,指出了现有自动发电控制(AGC)控制算法及建模方法存在的不足。提出了基于比例-微分控制律的AGC总调节需求计算方法,通过提前抑制误差提高系统稳定性。在分析低通滤波环节如何影响AGC调整效果的基础之上,提出了考虑不同工况下滤波因子自适应调整方法,在减少日常频繁调整的同时提升故障下动态响应性能。为提高所提方法实际电网运行效率和安全水平,探讨了控制区域建模方法和电厂控制策略优化方案。最后,基于电力系统全过程动态仿真程序(PSD-FDS)验证了所提优化方法的有效性。
Abstract:
      After the operation of Chongqing-Hubei back-to-back flexible DC project, the Southwest power grid with multi-DC weak sending and high proportion of hydropower is significantly reduced. Considering the grid operation of the Southwest power grid in asynchronous mode, and the existing problems of AGC algorithms and modelling methods are analyzed. A computational method of area regulation requirement, based on proportional-derivative control law, is proposed to increase system stability by reducing errors in advance. Based on the relationships between low-pass filter process and control quality, the setting of dynamic filtering factors for different working condition is developed to balance dynamic response performance and frequent adjustment of units output. The optimization schemes for establishing the control areas and relevant control strategies are proposed in order to meet the demands for the efficiency and safety in actual operation. Verification simulations are carried out and AGC full dynamic simulation results prove the effectiveness of the proposed optimization methods based on the platform of the PSD-FDS. This work is supported by National Key R&D Program of China (No.2017YFB0902600) State Grid Corporation of China and Southwest Branch of State Grid Corporation of China.
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