Congestion management in power systems
详细信息 查看全文
- 作者：Joachim Bertsch ; Simeon Hagspiel ; Lisa Just
- 关键词：Power system economics ; Unbundling ; Congestion management ; Transmission pricing ; Inter ; temporal equilibrium model
- 刊名：Journal of Regulatory Economics
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：50
- 期：3
- 页码：290-327
- 全文大小：
- 刊物类别：Business and Economics
- 刊物主题：Industrial Organization; Public Finance; Microeconomics;
- 出版者：Springer US
- ISSN：1573-0468
- 卷排序：50
文摘
In liberalized power systems, generation and transmission services are unbundled, but remain tightly interlinked. Congestion management in the transmission network is of crucial importance for the efficiency of these inter-linkages. Different regulatory designs have been suggested, analyzed and followed, such as uniform zonal pricing with redispatch or nodal pricing. However, the literature has either focused on the short-term efficiency of congestion management or specific issues of timing investments. In contrast, this paper presents a generalized and flexible economic modeling framework based on a decomposed inter-temporal equilibrium model including generation, transmission, as well as their inter-linkages. The model covers short-run operation and long-run investments and hence, allows to analyze short and long-term efficiency of different congestion management designs that vary with respect to the definition of market areas, the regulation and organization of TSOs, the way of managing congestion besides grid expansion, and the type of cross-border capacity allocation. We are able to identify and isolate implicit frictions and sources of inefficiencies in the different regulatory designs, and to provide a comparative analysis including a benchmark against a first-best welfare-optimal result. To demonstrate the applicability of our framework, we calibrate and numerically solve our model for a detailed representation of the Central Western European (CWE) region, consisting of 70 nodes and 174 power lines. Analyzing six different congestion management designs until 2030, we show that compared to the first-best benchmark, i.e., nodal pricing, inefficiencies of up to 4.6% arise. Inefficiencies are mainly driven by the approach of determining cross-border capacities as well as the coordination of transmission system operators’ activities.