摘要
针对南方电网复杂的交直流混合输电的特点,构思时空协调的停电防御框架。在广域信息平台、在线量化稳定分析和自适应控制决策等环节上,提升防御灾变的功能,即从静态到动态范畴,从离线到在线,从定性到定量,从固定设置到自适应优化;其中特别强调相继故障的风险预警和多方面的协调。其创新点和工程应用还包括:在没有数学模型的支持下,评估实测时间响应曲线的轨迹稳定裕度;非自治非线性系统的特征根分析技术;高维受扰轨迹之间的相似度指标,及以其为基础的模型识别技术;将气象和雷电等非电力信息整合到停电防御框架中,对相继故障的风险进行仿真和预警;基于风险管理概念的协调控制。
Aiming at characteristics of complicated AC/DC power transmission, an adaptive space-time coordinative framework of blackout defending is proposed for China Southern Power Grid. Based on the wide area information platform, online quantitative stability analysis and adaptive decision-making techniques, this defending system will upgrade the SCADA system from static category to dynamic one, the EMS from offline security analysis to online one, the stability assessment from a qualitative manner to quantitative one, the decision-making from conservative fashion to adaptive optimization one. New innovations and their engineering applications are expected, such as the stability margin assessment of measured swing curves without using system models and parameters, eigenvalue techniques along the trajectories of non- autonomous strong-nonlinear systems, development of a similarity index for high-dimensional trajectories and model identification techniques based on it, simulations of cascading outages considering weather and thunder information and the early warning of the blackout risk, and risk coordination among different controls.
出处
《南方电网技术》
2008年第1期1-7,共7页
Southern Power System Technology
基金
国家重点基础研究发展计划(973计划)资助项目(2004CB217905)
国家自然科学基金重大项目(50595413)
关键词
停电灾变的防御
PMU轨迹数据的挖掘
时空协调
混合优化
风险决策
相继故障的预警
blackout defending
knowledge extraction from trajectory data acquired by PMU
adaptive space-time coordination
hybrid optimization
risk-based decision-making
early warning of cascading outages
