大方式下省地电网无功电压实时趋优控制方法

发布时间：2018-07-05 18:30

本文选题：自动电压控制 + 调控失配　；参考：《电力系统自动化》2017年11期

【摘要】：针对大方式下省地两级电网的无功电压调控需求难以同时兼顾的问题,指出了省地电网无功电压调控失配的一种表现形式——220kV变压器中压侧电压调控失配,提出了一种新的失配风险评估模型,增加了变压器中压侧电压调控失配的判据。据此制定了相应去失配策略,避免了因地调无功电压调控手段配合不当而导致的变压器中压侧电压调控失配问题。进而提出了省地电网无功电压实时趋优控制方法,以兼顾省地电网无功电压调控需求为控制目标,以关口无功、关口电压和变压器中压侧电压为控制特征参数,在不依赖于全网精确严格的优化计算的前提下,实现省地两级电网无功电压调控状态的实时趋优。应用到某区域电网的仿真结果表明,所述方法不仅能够实现系统运行的经济性和安全性的统一,而且具备控制实时性和可靠性高的优点。
[Abstract]:In order to solve the problem that it is difficult to take into account the demand of reactive power and voltage regulation in two levels of power grid in large scale, this paper points out that a form of reactive power and voltage control mismatch in power grid is 220 kV transformer middle voltage side voltage control mismatch. A new risk assessment model of mismatch is proposed, and the criterion of voltage mismatch on the middle voltage side of transformer is added. Based on this, the corresponding de-mismatch strategy is formulated to avoid the problem of transformer voltage mismatch caused by the improper coordination of reactive power and voltage regulation means. Furthermore, a real-time optimal control method for reactive power and voltage of land and land power network is proposed. The control objective is to take into account the control requirements of reactive power and voltage, and the control characteristic parameters are the gate reactive power, the gate voltage and the voltage of the middle voltage side of the transformer. On the premise of not relying on the accurate and strict optimization calculation of the whole network, the real-time optimization of reactive power and voltage regulation state of two-level power grid is realized. The simulation results show that the proposed method can not only realize the unity of economy and security in the operation of the system, but also have the advantages of real-time control and high reliability.
【作者单位】：中国南方电网有限责任公司电网技术研究中心;广东省绿色能源技术重点实验室(华南理工大学电力学院);
【基金】：中国南方电网科技项目(CSGTRC-K153010-002-XT)~~
【分类号】：TM714.3

【相似文献】