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Modeling risk contagion in the Italian zonal electricity market
European Journal of Operational Research ( IF 6.4 ) Pub Date : 2021-07-06 , DOI: 10.1016/j.ejor.2021.06.052
Emmanuel Senyo Fianu 1, 2 , Daniel Felix Ahelegbey 3 , Luigi Grossi 4
Affiliation  

Ensuring the security of stable, efficient and reliable energy supplies has intensified the interconnections between energy markets. Imbalances between supply and demand due to operational failures, congestion and other sources of risk faced by market connections can lead to a system that is vulnerable to the spread of risk and its spill-over. The main contribution of this paper is the development and estimation of a Bayesian Graphical Vector-AutoRegression and a Bayesian Graphical Structural Equation Modelling with external regressors - BG-VARX and BG-SEMX, respectively - enhancing the proper analysis of market connections. The Italian electricity market has been chosen because it is a clear example of a zonal market where risk can spread over connected zones. We estimate, for the first time, within-day and across-day zonal market interconnections with a multivariate time series of hourly prices, actual and forecast power demand and forecast wind generation over the period 2014-2019 and evaluate the dynamics and persistence of zonal market connections, examining the spread of risk in the zones of the Italian electricity market. Our findings provide an improved, accurate explanation of risk contagion, identifying the zones that are most influential in terms of hub centrality (major transmitters) and authority centrality (major recipients), respectively, for intra-day and inter-day risk propagation in the Italian electricity market. In addition, the policy implications in terms of market-monitoring are discussed.



中文翻译:

模拟意大利区域电力市场的风险传染

确保稳定、高效和可靠的能源供应安全,加强了能源市场之间的相互联系。由于运营失败、拥堵和市场连接面临的其他风险来源而导致的供需失衡可能导致系统容易受到风险扩散及其溢出的影响。本文的主要贡献是开发和估计贝叶斯图形向量自回归和贝叶斯图形结构方程建模,分别使用外部回归量 - BG-VARX 和 BG-SEMX - 加强对市场联系的正确分析。选择意大利电力市场是因为它是区域市场的一个明显例子,其中风险可以分散到连接区域。我们第一次估计,2014-2019 年期间,具有多变量时间序列的每小时价格、实际和预测电力需求以及预测风力发电的区域市场互连,并评估区域市场连接的动态和持续性,检查风险分散在意大利电力市场的区域。我们的研究结果提供了对风险传染的改进、准确的解释,分别确定了在枢纽中心性(主要传递者)和权威中心性(主要接收者)方面对日内和日间风险传播影响最大的区域。意大利电力市场。此外,还讨论了市场监测方面的政策影响。2014-2019 年期间的实际和预测电力需求和预测风力发电,并评估区域市场连接的动态和持续性,检查意大利电力市场区域的风险分布。我们的研究结果提供了对风险传染的改进、准确的解释,分别确定了在枢纽中心性(主要传递者)和权威中心性(主要接收者)方面对日内和日间风险传播影响最大的区域。意大利电力市场。此外,还讨论了市场监测方面的政策影响。2014-2019 年期间的实际和预测电力需求和预测风力发电,并评估区域市场连接的动态和持续性,检查意大利电力市场区域的风险分布。我们的研究结果提供了对风险传染的改进、准确的解释,分别确定了在枢纽中心性(主要传递者)和权威中心性(主要接收者)方面对日内和日间风险传播影响最大的区域。意大利电力市场。此外,还讨论了市场监测方面的政策影响。分别确定在枢纽中心性(主要传输者)和权威中心性(主要接收者)方面对意大利电力市场的日内和日间风险传播最具影响力的区域。此外,还讨论了市场监测方面的政策影响。分别确定在枢纽中心性(主要传输者)和权威中心性(主要接收者)方面对意大利电力市场的日内和日间风险传播最具影响力的区域。此外,还讨论了市场监测方面的政策影响。

更新日期:2021-07-06
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