摘要
随着风电等新能源接入比例的不断上升,对电力系统运行灵活性提出了更高的要求。基于此背景,从源荷灵活性提升入手,在需求侧通过分时电价及可中断负荷手段引导用户主动优化负荷曲线,以缓解风电的反调峰给系统带来的调峰压力;基于目前的火电机组深度调峰技术,提出了考虑机组低荷疲劳寿命损失及投油成本的深度调峰出力模型;建立了计及需求响应与火电机组深度调峰的含风电系统优化调度模型。以改进的IEEE 118节点系统为例,进行了多种场景的仿真计算分析,结果表明需求侧资源与火电机组深度调峰手段能够有效提升系统的新能源消纳能力,验证了该模型的有效性。
With the growing proportion of wind power in the grid,the higher requirements are put forward for the flexibility of power system operation.Based on this background,the paper aims at improving the flexibility of power system from demand side and power generation side.At demand side,time-of-use price and interruptible load are adopted to guide users actively optimize load curve,which can relieve the peak regulation pressure from the"anti-peak regulation"character of wind power.Simultaneously,based on the current deep peak regulation technology of thermal power units,this paper presents the energy consumption cost model of thermal power units considering fatigue life loss and oil cost in deep peak regulation.Moreover,the optimal dispatch model of power system with high wind power penetration is proposed,which takes demand response and deep peak regulation of thermal power units into account.Finally,taking modified IEEE 118-bus system as an example,a variety of cases are simulated and the results show that the demand-side means and deep peak regulation of thermal power units can effectively improve the capacity of the consumption of wind power,which verifies the validity of the proposed model.
作者
邓婷婷
娄素华
田旭
吴耀武
李楠
DENG Tingting;LOU Suhua;TIAN Xu;WU Yaowu;LI Nan(State Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology), Wuhan 430074, China;Economic Research Institute of State Grid Qinghai Electric Power Company, Xining 810000, China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2019年第15期34-41,共8页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51677076)
国家重点研发计划资助项目(2016YFB0900100)~~
关键词
灵活性
风电消纳
需求响应
深度调峰
优化调度
flexibility
wind power accommodation
demand response
deep peak regulation
optimal dispatch
