考虑热备用的气-电耦合园区综合能源系统弹性调度

Resilience Scheduling of Integrated Electricity and Gas Community System Considering Hot Reservation

随着气-电耦合园区综合能源系统IEGS(integrated electricity and gas community system)内部能源耦合程度的逐渐增强和其日益增长的供能可靠性需求,制定合理有效的调度策略增强系统对供能端故障的适应性愈加重要。为此,计及IEGS电、气互补运行特性,制定了考虑蓄热装置热备用的气、电互补多阶段弹性调度策略。首先,计算各个时刻发生气源、电源故障时满足重要负荷所需的最小储能备用容量;然后,基于备用信息进行考虑热备用约束的日前经济调度,若发生源端故障,系统切换至故障运行模式,优先保证重要负荷供能;最后,选取夏季运行日数据进行调度策略的验证分析。结果表明,考虑热备用的IEGS气、电互补弹性调度策略可在不明显改变运行成本的情况下提升系统对源端故障的适应性,保证故障域内重要负荷的可靠供给,具有较强的运行弹性。

With the increasing energy coupling inside anintegrated electricity and gas community system(IEGS)and the growing requirement for its energy supply reliability,it is an urgent task to develop a reasonable and effective sched?uling strategy forenhancing the system’s adaptability to source outages.Based on the complementary operation charac?teristics of electricity and gas inan IEGS,a multi-stage complementary resilience scheduling strategy,which takes into account the hot reservation of heat storage devices,is formulated in this paper.First,the minimum reservation capaci?tiesare calculated for satisfying critical loads in case that gasorelectricity supply failures occurat different time points.Then,the day-ahead economic scheduling with the consideration of hot reservation constraints is carried out based on the reservation information.Once a source outageoccurs,the system will switch to its failure operation mode to satisfy critical loads in priority.This scheduling strategy is verified and analyzed with the selected operation data in summer.Results show that the proposed resilience schedulingstrategy with hot reservationcan improve the system’s adaptability to source outages with no significant change in the operation cost.As a result,it can realize the reliable supply of critical loads in the fault domain and hasstrongeroperationresilience.