文章摘要
陈艳波,郑顺林,郎燕生,等.基于WLAV的电-气综合能源系统抗差状态估计[J].电力系统自动化. DOI: 10.7500/AEPS20180428003.
CHEN Yanbo,ZHENG Shunlin,LANG Yansheng, et al.Robust state estimation of electric-gas integrated energy system based on WLAV[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20180428003.
基于WLAV的电-气综合能源系统抗差状态估计
Robust state estimation of electric-gas integrated energy system based on WLAV
DOI:10.7500/AEPS20180428003
关键词: 综合能源系统  状态估计  电制氢  电-气耦合
KeyWords: intergrated energy system  state estimation  power to gas  electric-gas integrated energy system
上网日期:2018-09-30
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
陈艳波 华北电力大学电气与电子工程学院 yanbochen2008@sina.com 
郑顺林 华北电力大学电气与电子工程学院 244995421@qq.com 
郎燕生 中国电力科学研究院有限公司 langyansheng@sina.com 
杨晓楠 中国电力科学研究院有限公司 yangxiaonan@epri.sgcc.com.cn 
摘要:
      天然气可大规模存储的特性及电制氢(Power to Gas, P2G)技术的支撑使得电-气综合能源系统(Integrated Energy System, IES)受到了国内外的普遍关注。为实现对电-气IES的全面、实时和精确感知,需要构建电-气IES状态估计(State Estimation, IES-SE),而IES-SE依赖于电-气耦合模型建模、压缩机支路建模以及电-气两种能流的联合估计建模。在电-气耦合模型建模方面,引入了燃气轮机(Gas Turbine,GT)和P2G机组以考虑电-气两种能流的双向转化;在压缩机支路建模方面,提出一种更符合实际工程的压缩机约束,不仅可考虑压缩机元件对气压的约束,同时也可考虑燃气压缩机的耗气量;在此基础上,本文构建了基于加权最小绝对值(Weighted Least Absolute Value, WLAV)的电-气IES抗差SE模型,并给出了其求解方法。仿真算例验证了所提出的电气耦合模型、压缩机支路模型及电-气IES-SE的有效性。
Abstract:
      The electric-gas integrated energy system has been paid more and more attention at home and abroad because of the characteristics of large scale storage of natural gas and the technological support of Power to Gas (P2G). In order to achieve the comprehensive, real-time and accurate perception of the electric-gas integrated energy system, the the State Estimation of integrated energy system (IES-SE) coupling natural gas and electricity is needed. IES-SE depends on the modeling of coupling elements, branches containing compressor and IES. As for coupling elements, this paper utilized both gas turbine (Gas Turbine GT) and P2G unit to achieve the two-way transformation of energy flow. As for modeling of branches containing compressor, a new model was proposed, which not only take the realationship between inlet pressure and outlet pressure but the consume of gas by GT into consideration. On these basis, the WLAV SE model of the electric-gas integrated energy system is constructed, and its solution method is given. Finally, the results of simulation prove the validity of the proposed models of coupling elements, branches containing compressor and IES.
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