| 引用本文: | 田伟堃,于浩,李鹏,冀浩然,王成山.基于投影积分的气-电耦合园区综合能源系统动态仿真方法[J].电力自动化设备,2020,40(11): |
| TIAN Weikun,YU Hao,LI Peng,JI Haoran,WANG Chengshan.Projective integration-based dynamic simulation method for community integrated energy system with gas-electricity coupling[J].Electric Power Automation Equipment,2020,40(11): |
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| 摘要: |
| 在充分考虑电力、燃气系统及其相互转化特性的基础上，建立了气-电耦合园区综合能源系统动态仿真模型，并根据动态过程的时间尺度对刚性系统进行划分；在此基础上，基于投影积分理论，提出一种适用于气-电耦合园区综合能源系统的高效率动态仿真方法，采用内部积分器以小步长的显式和隐式欧拉法交替求解来精细刻画快动态过程，采用外部积分器以可变大步长二阶牛顿插值高效求解慢动态过程，且在计算过程中能够有效计及故障扰动等事件的影响；对算法的数值精度进行分析。基于典型算例的算法测试表明，所提方法能够有效实现多场景下的气-电耦合系统快速稳定求解，在保证精度的前提下有效提升仿真效率。 |
| 关键词: 园区综合能源系统 气-电耦合 投影积分 动态仿真 刚性系统 |
| DOI：10.16081/j.epae.202008027 |
| 分类号:TM74;TK01 |
| 基金项目:国家自然科学基金资助项目(51961135101,51907139) |
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| Projective integration-based dynamic simulation method for community integrated energy system with gas-electricity coupling |
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TIAN Weikun, YU Hao, LI Peng, JI Haoran, WANG Chengshan
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Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
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| Abstract: |
| Considering the operating characteristics of power system, natural gas system and their coupling units, a dynamic model of the community integrated energy system with gas-electricity coupling is deve-loped, in which the whole system is divided according to the time scale of their respective dynamics. Based on this model, an efficient dynamic simulation method based on projective integration is proposed, which is suitable for the simulation analysis of the community integrated energy system with gas-electricity coupling. Considering different structural characteristics of the natural gas system and power system, the inte-rnal integrator describes the fast dynamic processes finely by alternating the explicit and implicit Euler method of small steps, while the external integrator utilizes a variable large step second-order Newton method to solve the slow dynamic processes effectively. At the same time, the emergencies such as faults or dis-turbances are addressed effectively while ensuring accuracy. Then, the numerical accuracy of the proposed algorithm is analyzed. Simulative results based on typical examples indicate that the proposed method effectively solves the integrated energy system with gas-electricity coupling in multiple scenarios and improves the simulation efficiency with satisfactory accuracy. |
| Key words: community integrated energy system gas-electricity coupling projective integration dynamic simulation stiff system |
