摘要
天然气机组的大规模应用使得电力与天然气系统耦合逐步紧密,导致故障会在能源子系统间传播,对电–气耦合系统的长期规划提出新的要求。为提高耦合系统的可靠性,该文构建考虑多目标(即可靠性与成本)协调的源端容量规划模型,实现发电机组与储能装置的选址定容。首先,针对各元件故障特点建立多状态可靠性模型,刻画元件在各运行状态间的转移过程。基于元件的可靠性模型和负荷的多状态特性,依次构建天然气系统与电力系统的可靠性约束,并将故障跨系统传播考虑在内。其次提出电–气耦合系统源端容量规划模型,在投资约束、运行约束和可靠性约束等条件下,实现包含投资成本、运行成本和切负荷成本在内的总成本最小。此外,为增强模型的实用性,采用线性化、二阶锥松弛相结合的方法将所构建的非线性模型转化求解。最后,引入IEEE30节点和比利时20节点天然气系统组成的测试系统验证模型的有效性。
The large-scale utilization of natural gas units continuously increases the interactions between power systems and gas systems. Considering that, random failures may propagate between energy subsystems, bringing new requirements for long-term planning of the electricity-gas systems(EGs). In order to improve the reliability of EGs, this paper proposed an energy capacity planning model considering multi-objective coordination(i.e., reliability and costs) to determine the location and capacity of generators and energy storages.Considering the failure characteristics of components, multi-state reliability models were proposed to describe the transition process among different operating states. Based on the reliability models of components and multi-state energy loads, the reliability constraints of gas system and power system were sequentially formulated, where the cross-sectorial failure propagation was considered. Besides, the energy capacity planning model of the EGs was proposed to minimize the total system costs, including investment costs, operation costs and load curtailment costs. In the proposed model, the investment constraints, operation constraints and reliability constraints of IGPSs were considered. Finally, a case study composed of IEEE 30-bus system and a 20-bus Belgian gas network was utilized to validate the effectiveness of the proposed model.
作者
包铭磊
丁一
桑茂盛
梁梓杨
惠恒宇
唐学用
邵常政
BAO Minglei;DING Yi;SANG Maosheng;LIANG Ziyang;HUI Hengyu;TANG Xueyong;SHAO Changzheng(School of Electrical Engineering,Zhejiang University,Hangzhou 310027,Zhejiang Province,China;Power Grid Planning&Research Center Guizhou Power Grid Co.,Ltd.,Guiyang 550000,Guizhou Province,China;School of Electrical Engineering,Chongqing University,Shapingba District,Chongqing 400044,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2021年第22期7551-7562,共12页
Proceedings of the CSEE
基金
贵州电网有限责任公司科技项目(067600KK52190010)。
关键词
源端容量规划
电–气耦合系统
成本
可靠性
多状态模型
energy capacity planning
electricity-gas systems
costs
reliability
multi-state models
