Distributed real-time method for congestion management in electrical transmission systems considering HVDC-links and redispatch

考虑HVDC链路和再调度的输电系统拥塞管理分布式实时方法

• 批准号: 239343689
• 负责人: Professor Dr.-Ing. Christian Rehtanz
• 金额: --
• 依托单位: Institut für Energiesysteme, Energieeffizienz und Energiewirtschaft
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/239343689?language=en
• 关键词: Distributed; real; time; method; congestion

Due to the large-scale integration of renewable energy sources and transnational trade of electricity, the European transmission network will face significant network congestion both at cross-border interconnections and internally in national grids. At the same time, the transmission system operators (TSOs) are committed to operate the grid according to the N-1 criterion that requires the security of network operation for the loss of any single piece of equipment in any credible scenario. Uncertainties regarding the feed-in by wind and solar power increase the number and spread of these scenarios leading to curtailment of generation by the most economic power plants and renewable energy sources due to network restrictions.In order to alleviate this effect it can be accounted for counter-measures that can be executed to respond to the scenarios or loss of equipment and to reduce overloads in due time. In research centralized optimization approaches are proposed for this problem that result in suggestions for adequate topological counter-measures or reconfiguration of generation and load (redispatch). These approaches exhibit some disadvantages: in the European network no central entity obtains a complete system view (due to the existence of various TSOs), due to length of calculation the optimization cannot be executed in real-time for large-scale systems, and only N-1 but not arbitrary network situations (N-2 to N-k) are considered. For this reason, the following scientific problem needs to be addressed which will be addressed in this research project:How can overloads of network equipment be relieved robustly in real-time in case of incomplete system information and arbitrary network situations (N-1,N-2 to N-k)?The approach of this project builds on preliminary work of the project "Decentralized coordination of power flow controllers for increasing transmission capacity and security" in the course of DFG research unit FOR1511. In that project, a distributed real-time coordination system for AC power flow controllers has been developed that adapts to unforeseen network situations. Based on this it will now be investigated how power flow control by HVDC transmission technology can be integrated in the coordinated AC power flow control. In addition, basic research will be conducted to investigate how coordinated real-time redispatch can be achieved by a distributed system in order to deploy the flexibility at both generation and consumption side (e.g., electric vehicles, storages) to relieve overloads of network equipment in critical network situations.

由于可再生能源和跨国电力贸易的大规模整合，欧洲输电网络将在跨境互联和国家电网内部面临严重的网络拥堵。与此同时，输电系统运营商（TSO）致力于根据N-1标准运营电网，该标准要求在任何可信的情况下，任何单一设备的损失都需要网络运行的安全性。风能和太阳能上网的不确定性增加了这些情景的数量和范围，导致最经济的发电厂和可再生能源由于网络限制而削减发电量。为了减轻这种影响，可以考虑采取应对措施，以应对情景或设备损失，并在适当的时候减少过载。在研究集中优化方法，提出了这个问题，导致足够的拓扑对策或发电和负荷（重新分配）的重新配置的建议。这些方法表现出一些缺点：在欧洲网络中，没有中央实体获得完整的系统视图（由于各种TSO的存在），由于计算的长度，对于大规模系统不能实时执行优化，并且仅考虑N-1而不是任意网络情况（N-2到N-k）。为此，需要解决以下科学问题，本研究项目将解决这些问题：在系统信息不完整和任意网络情况（N-1、N-2到N-k）的情况下，如何实时鲁棒地缓解网络设备的过载？该项目的方法建立在DFG研究单位FOR 1511过程中的项目“分散协调潮流控制器以提高传输容量和安全性”的前期工作的基础上。在该项目中，开发了一个分布式交流潮流控制器实时协调系统，以适应不可预见的网络情况。基于此，现在将研究如何将通过HVDC传输技术的潮流控制集成到协调的AC潮流控制中。此外，将进行基础研究，以调查如何通过分布式系统实现协调的实时再调度，以便在发电和消费侧部署灵活性（例如，电动车辆、存储器），以在关键网络情况下减轻网络设备的过载。