中国电力 ›› 2026, Vol. 59 ›› Issue (5): 164-175.DOI: 10.11930/j.issn.1004-9649.202512032
李永斌1(
), 格桑晋美1(
), 吴杰1(
), 朱玲2(
), 徐广2(
)
收稿日期:2025-12-15
修回日期:2026-04-14
发布日期:2026-05-15
出版日期:2026-05-28
作者简介:基金资助:
LI Yongbin1(
), GESANG Jinmei1(
), WU Jie1(
), ZHU Ling2(
), XU Guang2(
)
Received:2025-12-15
Revised:2026-04-14
Online:2026-05-15
Published:2026-05-28
Supported by:摘要:
随着电力系统惯量下降导致扰动后系统频率问题加剧,配置构网型储能逐渐成为一次调频的重要手段。若构网型储能参数设置不当反而可能加剧系统暂态稳定风险,且现有研究普遍忽略储能自身荷电状态(state of charge,SOC)约束。为此,提出一种考虑SOC约束和有功调频系数的构网型储能一次调频方法。首先,建立构网型储能与同步发电机协同参与一次调频的详细数学模型,推导系统频率响应传递函数;其次,基于轨迹灵敏度分析,识别出影响暂态频率稳定的关键主导参数并构建以最小化系统最大频率偏差为目标,计及储能SOC安全运行区间、出力限制及系统频率变化率(rate of change of frequency,RoCoF)约束的参数优化模型,采用序列二次规划算法进行求解;最后,通过仿真算例验证,结果表明所提方法在满足SOC与RoCoF约束条件下,使系统最大频率偏差降低43.3%,频率最低点显著抬升,有效提升了系统暂态频率稳定性能。
李永斌, 格桑晋美, 吴杰, 朱玲, 徐广. 考虑SOC约束和有功调频系数的构网型储能一次调频方法[J]. 中国电力, 2026, 59(5): 164-175.
LI Yongbin, GESANG Jinmei, WU Jie, ZHU Ling, XU Guang. A grid-forming energy storage primary frequency regulation method considering SOC constraints and active frequency modulation coefficients[J]. Electric Power, 2026, 59(5): 164-175.
| 局部绝对 灵敏度 | 线性化等效 绝对灵敏度 | 相对误差/% | |
| 14 | 4.86 | ||
| 18 | 2.82 | ||
| 22 | 2.46 | ||
| 26 | 0.11 | ||
| 30 | 1.92 | ||
| 34 | 3.77 | ||
| 38 | 4.93 |
表 1 拟合误差分析
Table 1 Fitting Error Analysis
| 局部绝对 灵敏度 | 线性化等效 绝对灵敏度 | 相对误差/% | |
| 14 | 4.86 | ||
| 18 | 2.82 | ||
| 22 | 2.46 | ||
| 26 | 0.11 | ||
| 30 | 1.92 | ||
| 34 | 3.77 | ||
| 38 | 4.93 |
| 符号 | 含义 | 数值 |
| 系统基准容量 | 100 | |
| H/s | 系统等值惯性常数 | 4 |
| D/(p.u.) | 系统等值阻尼系数 | 1 |
| 同步发电机调频系数 | 20 | |
| 同步发电机时间常数 | 0.2 | |
| R/(p.u.) | 同步发电机调差系数 | 0.05 |
| 构网型储能虚拟惯性时间常数 | 0.5 | |
| 构网型储能虚拟阻尼系数 | 20 | |
| 构网型储能虚拟惯性系数 | 2 | |
| 初始荷电状态 | 60 | |
| SOC下限 | 20 | |
| SOC上限 | 90 | |
| 暂态频率变化率RoCoF上限 | 1 |
表 2 仿真系统参数
Table 2 Simulation System Parameters
| 符号 | 含义 | 数值 |
| 系统基准容量 | 100 | |
| H/s | 系统等值惯性常数 | 4 |
| D/(p.u.) | 系统等值阻尼系数 | 1 |
| 同步发电机调频系数 | 20 | |
| 同步发电机时间常数 | 0.2 | |
| R/(p.u.) | 同步发电机调差系数 | 0.05 |
| 构网型储能虚拟惯性时间常数 | 0.5 | |
| 构网型储能虚拟阻尼系数 | 20 | |
| 构网型储能虚拟惯性系数 | 2 | |
| 初始荷电状态 | 60 | |
| SOC下限 | 20 | |
| SOC上限 | 90 | |
| 暂态频率变化率RoCoF上限 | 1 |
| 方法 | 频率最低 点 Hz | 最大频率 偏差 Hz | 最大频率变化 率 (Hz·s–1) | 稳态频率偏 差 Hz |
| 无储能 | 49.476 | 0.524 | 0.395 | 0.20 |
| 常规构网型储能 | 49.598 | 0.402 | 0.750 | 0.16 |
| 本文 | 49.703 | 0.297 | 0.600 | 0.14 |
表 3 系统频率响应关键指标对比
Table 3 Comparison of key indicators for system frequency response
| 方法 | 频率最低 点 Hz | 最大频率 偏差 Hz | 最大频率变化 率 (Hz·s–1) | 稳态频率偏 差 Hz |
| 无储能 | 49.476 | 0.524 | 0.395 | 0.20 |
| 常规构网型储能 | 49.598 | 0.402 | 0.750 | 0.16 |
| 本文 | 49.703 | 0.297 | 0.600 | 0.14 |
| 方法 | 最大输出 功率/(p.u.) | 达到峰值 时间/s | 总输出能 量/(p.u.·s–1) | 稳态输出 功率/(p.u.) |
| 常规构网型储能 | 0.132 | 1.9 | 0.441 | 0.064 |
| 本文 | 0.191 | 1.8 | 0.575 | 0.078 |
表 4 储能输出功率关键指标对比
Table 4 Comparison of key indicators for energy storage output power
| 方法 | 最大输出 功率/(p.u.) | 达到峰值 时间/s | 总输出能 量/(p.u.·s–1) | 稳态输出 功率/(p.u.) |
| 常规构网型储能 | 0.132 | 1.9 | 0.441 | 0.064 |
| 本文 | 0.191 | 1.8 | 0.575 | 0.078 |
| 方法 | 初始SOC/ % | 最终SOC/ % | 总消耗 SOC/% | 最大放电速 率/(%·s–1) |
| 常规构网型储能 | 60 | 54.39 | 5.61 | 0.73 |
| 本文 | 60 | 51.75 | 8.25 | 1.06 |
表 5 储能SOC关键指标对比
Table 5 Comparison of Key Indicators for Energy Storage SOC
| 方法 | 初始SOC/ % | 最终SOC/ % | 总消耗 SOC/% | 最大放电速 率/(%·s–1) |
| 常规构网型储能 | 60 | 54.39 | 5.61 | 0.73 |
| 本文 | 60 | 51.75 | 8.25 | 1.06 |
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