| 引用本文: | 齐 郑,吉苏朋.水电机组调相运行与新能源发电协同优化技术研究[J].电力系统保护与控制,2025,53(03):108-119.[点击复制] |
| QI Zheng,JI Supeng.Synergistic optimization of phase modulation operation of hydropower units and power generation of new energy units[J].Power System Protection and Control,2025,53(03):108-119[点击复制] |
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| 摘要: |
| 新能源直流外送系统发生直流闭锁后会产生暂态过电压，严重限制了系统内新能源机组的出力。针对这一问题，分析了新能源直流外送系统发生直流闭锁后产生暂态过电压的机理及其对新能源消纳的影响，提出了水电机组调相运行与新能源发电协同优化技术。以系统运行经济性最优为优化目标，考虑暂态过电压等约束，建立了水电机组调相运行与新能源发电协同优化模型。利用改进粒子群算法进行寻优，得到水电机组和新能源机组的优化运行方案。根据某地区实际电网搭建仿真算例，仿真计算结果表明所提模型及方法不仅能促进新能源的消纳，而且能有效抑制新能源直流外送系统的暂态过电压，使系统运行的经济性、安全性得到显著提升。 |
| 关键词: 水电机组 暂态过电压 新能源直流外送 粒子群算法 |
| DOI：10.19783/j.cnki.pspc.240530 |
| 投稿时间：2024-05-01修订日期：2024-07-11 |
| 基金项目:国家重点研发计划项目资助(2021YFB2601501) |
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| Synergistic optimization of phase modulation operation of hydropower units and power generation of new energy units |
| QI Zheng,JI Supeng |
| (School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China) |
| Abstract: |
| Following DC blocking in the new energy DC transmission system, transient overvoltage is generated, severely constraining the output of new energy units within the system. To address this issue, this paper examines the mechanisms behind transient overvoltage resulting from DC blocking in new energy DC transmission systems and their effects on new energy integration. Additionally, it introduces a coordinated optimization technique for integrating phase adjustment operations of hydroelectric units with new energy generation. A collaborative optimization model is established for the coordinated optimization of phase modulation operations of hydroelectric units and new energy generation, aiming to maximize the economic efficiency of system operations while considering constraints such as transient overvoltage. The traditional particle swarm algorithm is enhanced, and the improved algorithm is used to optimize the operational plans for both hydroelectric and new energy units. Based on a simulation example of a specific region’s actual power grid, the results demonstrate that the proposed model and method not only facilitate the integration of new energy but also effectively mitigate transient overvoltage in the new energy DC transmission system. This results in significant enhancements to both the economic efficiency and safety of system operations. |
| Key words: hydropower units transient overvoltage new energy DC transmission particle swarm algorithm |
