Enabling a Robust Future HVDC Grid

实现强大的未来高压直流电网

• 批准号: RGPIN-2019-05369
• 负责人: Gole, Aniruddha
• 金额: $ 6.63万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=692439
• 关键词: Enabling; Robust; Future; HVDC; Grid

High Voltage Direct Current Transmission (HVDC) Systems are seeing increasing use for the transport of energy. Compared with ac transmission, dc transmission has lower power loss and can perform the role of a firewall, thereby preventing the cascading propagation of dangerous disturbances across a large network. This feature facilitates the interfacing of renewable energy resources. HVDC Systems are undergoing a revolutionary transformation due to recent advances in semiconductor technology and new circuit topologies such as the multilevel modular converter (MMC), which overcome the deficiencies of line commutated converters (LCC) used in the past. The increased HVDC penetration is resulting in multi-infeed configurations where several HVDC converters feed into the same ac system, with the potential for adverse interactions. ******The long-term objective of the research is to investigate new control methods and configurations for HVDC Transmission Systems to make the future HVDC grid more effective and resilient. In order to do this, the Discovery Grant will investigate three broad directions. ******Firstly, the research will attempt to improve converter behavior by co-ordinated control of the multiple converters, either in a multi-infeed or dc grid configuration. One area of interest will be to reduce the risk of commutation failure in LCC converters by coordinating the controls of nearby converters. As the phenomena are highly-non-linear, the primary study approach will be to use electromagnetic-transient simulation supervised by Monte Carlo simulation and non-linear optimization algorithms. ******Secondly, the research will investigate the ability of HVDC converters to damp dangerous oscillations in the network and prevent instability. Wide-area control methods will be investigated which use information transmission between remote converters. However, it is important to ensure that the system is robust to operating point changes, signal transmission latency and loss of communication. Small signal modeling coupled with recent robust control approaches will be used. Novel ways of controlling the MMCs such as using the stored energy in the MMC's capacitors appear promising.******Thirdly the research will investigate new control methods for HVDC has been used for evacuating power from remote offshore power plants and for providing energy to remote locations such as oil platforms. Proposed approaches would include autonomous control algorithms that impart inertia-like behavior to the converters to operate them with a frequency droop characteristic. Other approaches include direct control where the phase locked loops of the converters are properly synchronized.******The research will result in lower loses and resilient energy transmission networks in Canada and elsewhere. It be carried out in collaboration with several Canadian utilities and consulting companies, thereby improving their competitiveness. *****

高压直流传输（HVDC）系统正在看到能源运输的使用越来越大。 与交流传输相比，直流传输具有较低的功率损失，并且可以发挥防火墙的作用，从而防止了大型网络中危险干扰的层叠传播。此功能促进了可再生能源的接口。 由于半导体技术的最新进展和新的电路拓扑，例如多级模块化转换器（MMC），HVDC系统正在经历革命性的转换，该电路拓扑（MMC）克服了过去使用的线路交通转换器（LCC）的不足。增加的HVDC渗透导致多进食构型，其中几个HVDC转换器馈入同一AC系统，并具有不良相互作用的潜力。 *****这项研究的长期目标是研究HVDC传输系统的新控制方法和配置，以使未来的HVDC电网更加有效和弹性。 为此，发现赠款将调查三个广泛的方向。 ******首先，该研究将尝试通过对多个转换器的多个转换器进行协调或直流网格配置来改善转换器行为。感兴趣的一个领域将是通过协调附近转换器的控件来降低LCC转换器中换倒失败的风险。由于现象是高度非线性的，因此主要的研究方法将是使用由蒙特卡洛模拟和非线性优化算法监督的电磁换情模拟。 ******第二，研究将研究HVDC转换器在网络中潮湿振荡并防止不稳定的能力。将研究宽面积控制方法，使用远程转换器之间的信息传输。但是，重要的是要确保系统对操作点的变化，信号传输延迟和通信损失具有鲁棒性。将使用小信号建模以及最新的鲁棒控制方法。控制MMC（例如在MMC电容器中使用储存的能量）的新颖方法似乎很有希望。到诸如石油平台之类的偏远位置。提出的方法将包括自主控制算法，这些算法将惯性行为赋予转换器，以使用频率下垂特征操作它们。其他方法包括直接控制转换器的相位锁定循环正确同步。******这项研究将导致加拿大和其他地方的较低损失和弹性的能量传输网络。它可以与加拿大的几家公用事业和咨询公司合作进行，从而提高其竞争力。 *****