Assessing Risk of Gas Shortage in Coupled Gas-Electricity Infrastructures
Assessing Risk of Gas Shortage in Coupled Gas-Electricity Infrastructures
复制标题
评估气电耦合基础设施中天然气短缺的风险
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
K. Turitsyn
中科院分区：
文献类型：
--
作者：
Anatoly Zlotnik;M. Chertkov;K. Turitsyn
美国和其他地方的许多电力系统正在经历燃气发电和可再生能源发电同时增加的过程。这两项贡献都足够清洁，可以取代即将退役的主要以燃煤发电为主的发电机。此外，将天然气和可再生能源结合起来是有利的，因为前者足够灵活，可以减轻后者的外生波动。然而，由此产生的电力系统和燃气发电机组燃气传输网络的强耦合也带来了风险。特别是，燃气发电厂的过度使用燃料可能会导致违反燃气压力限制和天然气供应短缺。为了提供一个评估这些风险的简单工具，我们开发了一个计算框架，该框架描述了维持燃气系统可行性的发电机调度解决方案的区域特征。提出的算法框架是模块化的，通过在电力和气体模拟模块中协调执行多个发电场景来构建。天然气管道压力对抽气速率的单调依赖性允许在气体注入空间中建立和证明可行/不可行的区域。该框架通过一个非常详细的基准气电模型的模拟进行了验证。最后，我们讨论了研究结果在电力系统运行程序和监管实践中的可能应用。
Many power systems in the United States and elsewhere are experiencing simultaneous increases of the gas-fired and renewable portions in the generation profile. Both contributions are sufficiently clean to replace retiring generators, which are mainly coal-fired. Moreover, pairing gas and renewables is advantageous because the former is flexible enough to mitigate the exogenous fluctuations of the latter. However, the resulting strong coupling of power systems and gas transmission networks through gas-fired generators also imposes risks. In particular, excessive fuel usage by gas-fired power plants may lead to violation of gas pressure limits and gas supply shortages. To provide a simple tool for assessing these risks, we develop a computational framework that characterizes regions of generator dispatch solutions that maintain gas system feasibility. The proposed algorithmic framework is modular - built through a coordinated execution of multiple generation scenarios within power and gas simulation modules. Monotone dependence of the gas pipeline pressure on the rates of gas withdrawals allows to establish and certify regions of feasibility/infeasibility in the space of the gas injections. The framework is validated against simulations of a highly detailed benchmark gas-electricity model. We conclude the manuscript with a discussion of possible applications of the results to power system operation procedures and regulatory practices.
影响因子：
9
作者：
M. Chaudry;Jianzhong Wu;N. Jenkins
通讯作者：
M. Chaudry;Jianzhong Wu;N. Jenkins
影响因子：
3.9
作者：
Chaudry, Modassar;Jenkins, Nick;Strbac, Goran
通讯作者：
Strbac, Goran