摘 要
随着可再生能源在电力系统中的占比不断提升，大规模风电与光伏并网对系统频率稳定性带来了新的挑战。本研究针对高比例新能源接入下电力系统频率调节问题，提出了一种基于多时间尺度的协同控制策略。通过建立包含风电、光伏和传统机组的系统频率响应模型，分析了不同渗透率下新能源出力波动对系统惯量和调频能力的影响机制。在此基础上，设计了包含一次调频、二次调频和紧急控制的协调优化框架，其中创新性地引入了虚拟同步机技术和储能系统的快速响应特性。研究采用改进的粒子群算法对控制参数进行优化，并通过IEEE 39节点系统进行仿真验证。
关键词：高比例新能源 频率稳定性 多时间尺度控制
Abstract
With the increasing proportion of renewable energy in the power system, large-scale wind power and photovoltaic grid connection brings new challenges to the frequency stability of the system. This study proposes a cooperative control strategy based on multiple time scales for the frequency regulation of power system under a high proportion of new energy access. By establishing the system frequency response model including wind power, photovoltaic and traditional units, the influence mechanism of new energy output fluctuation on the system inertia and frequency modulation capacity under different permeability is analyzed. On this basis, a coordinated optimization fr amework including primary frequency modulation, secondary frequency modulation and emergency control is designed, in which the virtual synchronization machine technology and the rapid response characteristics of the energy storage system are innovatively introduced. A modified particle swarm algorithm is used to optimize the control parameters and verify it through the IEEE 39 node system.
Keyword: High proportion of new energy frequency stability Multiple time-scale control
目 录
1绪论 1
1.1研究背景与意义 1
1.2研究现状 1
1.3研究方法与技术路线 1
2风电与光伏并网对电力系统频率的影响 2
2.1可再生能源发电特性分析 2
2.2大规模并网对系统惯量的影响 2
2.3功率波动与频率响应的关系 3
3适应高比例新能源的调频策略 3
3.1传统调频方式的局限性分析 3
3.2基于虚拟惯量的调频控制策略 4
3.3储能系统参与调频的优化配置 4
4新型电力系统调频策略验证与应用 5
4.1仿真模型构建与参数设置 5
4.2不同场景下的调频效果对比分析 6
4.3实际工程应用案例分析 6
4.4经济性与可行性评估 7
5结论 7
参考文献 8
致谢 9
随着可再生能源在电力系统中的占比不断提升，大规模风电与光伏并网对系统频率稳定性带来了新的挑战。本研究针对高比例新能源接入下电力系统频率调节问题，提出了一种基于多时间尺度的协同控制策略。通过建立包含风电、光伏和传统机组的系统频率响应模型，分析了不同渗透率下新能源出力波动对系统惯量和调频能力的影响机制。在此基础上，设计了包含一次调频、二次调频和紧急控制的协调优化框架，其中创新性地引入了虚拟同步机技术和储能系统的快速响应特性。研究采用改进的粒子群算法对控制参数进行优化，并通过IEEE 39节点系统进行仿真验证。
关键词：高比例新能源 频率稳定性 多时间尺度控制
Abstract
With the increasing proportion of renewable energy in the power system, large-scale wind power and photovoltaic grid connection brings new challenges to the frequency stability of the system. This study proposes a cooperative control strategy based on multiple time scales for the frequency regulation of power system under a high proportion of new energy access. By establishing the system frequency response model including wind power, photovoltaic and traditional units, the influence mechanism of new energy output fluctuation on the system inertia and frequency modulation capacity under different permeability is analyzed. On this basis, a coordinated optimization fr amework including primary frequency modulation, secondary frequency modulation and emergency control is designed, in which the virtual synchronization machine technology and the rapid response characteristics of the energy storage system are innovatively introduced. A modified particle swarm algorithm is used to optimize the control parameters and verify it through the IEEE 39 node system.
Keyword: High proportion of new energy frequency stability Multiple time-scale control
目 录
1绪论 1
1.1研究背景与意义 1
1.2研究现状 1
1.3研究方法与技术路线 1
2风电与光伏并网对电力系统频率的影响 2
2.1可再生能源发电特性分析 2
2.2大规模并网对系统惯量的影响 2
2.3功率波动与频率响应的关系 3
3适应高比例新能源的调频策略 3
3.1传统调频方式的局限性分析 3
3.2基于虚拟惯量的调频控制策略 4
3.3储能系统参与调频的优化配置 4
4新型电力系统调频策略验证与应用 5
4.1仿真模型构建与参数设置 5
4.2不同场景下的调频效果对比分析 6
4.3实际工程应用案例分析 6
4.4经济性与可行性评估 7
5结论 7
参考文献 8
致谢 9
