AVC体系下的长期电压稳定仿真分析  

Long-term voltage stability simulation based on AVC framework

作　　者：李健[1] 刘明波[2] 陈文广[3] 

机构地区：[1]广东电网公司电力科学研究院,广东广州510080 [2]华南理工大学电力学院,广东省绿色能源技术重点实验室,广东广州510640 [3]广东省电力设计研究院,广东广州510663

出　　处：《电力系统保护与控制》2011年第20期59-65,共7页Power System Protection and Control

基　　金：国家自然科学基金项目(50777021)~~

摘　　要：介绍了电力系统自动电压控制(AVC)的原理,根据分层电压控制思想,选用典型的AVC控制模型,验证其对长期电压稳定的影响。以控制灵敏度计算为基础,考虑系统安全运行约束,建立了用二次规划模型表达的二次电压控制模型。同时针对电力系统长期电压稳定具有慢动态的特点,以及AVC系统中二次电压控制引起的长期电压动态,在准稳态假设的基础上建立了反映系统长期电压变化的仿真模型。以新英格兰10机39节点系统的计算为例,验证了AVC系统能够提高系统的长期电压稳定性。The principle of power system automation voltage control （AVC） is introduced, typical AVC model is selected, and based on the the idea of hierarchical voltage control, the impact on long term voltage stability is tested. In this paper, based on the calculation of control sensitivity and considering the system security operation constraints, secondary voltage control problem is represented as a quadratic programming model subjected to security operation constraints. Considering the slow dynamics of power system long-term voltage stability and long-term voltage dynamics caused by secondary voltage in AVC system, a simulation model based on the quasi-steady-state is developed. Testing results on New England 10 generator 39 bus system show that AVC system can enhance the long term voltage stability.

关 键 词：自动电压控制 长期电压稳定 二次电压控制 准稳态仿真 电力系统 

分 类 号：TM712[电气工程—电力系统及自动化]