基于级联H桥的混合潮流控制器及控制策略研究

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基于级联H桥的混合潮流控制器及控制策略研究

更新时间：2025-10-29

- 基于级联H桥的混合潮流控制器及控制策略研究
- Issue 4, Pages: 44-52(2025)
- 作者机构：
  
  1. 新能源电力系统全国重点实验室(华北电力大学)
  2. 先进输电技术国家重点实验室(国网智能电网研究院有限公司)
  3. 国网河北省电力有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM571
- Published：2025
- 稿件说明：
移动端阅览
[J]. 2025, (4): 44-52.
DOI：

[J]. 2025, (4): 44-52. DOI：

摘要

随着高比例新能源替代传统火电机组大规模接入电网，潮流动态控制能力大幅降低，区域电网输电通道潮流分布不均匀情况加剧，部分输电通道和断面潮流过重、N-1过负荷情况突出，电网中输电断面瓶颈和线路输电能力闲置的情况并存，严重影响了电网整体输供电能力发挥和安全可靠性水平。论文针对新能源潮流外送通道受阻的应用场景，提出了一种基于级联H桥的混合潮流控制器(HPFC)

结合了无源的移相变压器(PST)和有源的级联H桥型换流器的优点，通过对线路阻抗幅值和相角大范围柔性化连续调节，可以实现对潮流的精准快速的控制；其次理论分析了PST的潮流调控方法和级联H桥的工作原理确定了HPFC的工作方式和运行范围，再次针对HPFC中有源和无源部分调节区域、调节速度之间的差异提出一种协同控制策略，最后基于220 kV电网双回线路应用场景，在PSCAD/EMTDC环境中进行仿真分析，验证了所提出的基于级联H桥的混合潮流控制器控制策略的可行性。

Abstract

With a high proportion of new energy sources replacing traditional thermal power units and being connected to the power grid on a large scale

the dynamic control ability of power grid flow is significantly reduced

leading to uneven distribution of power flow in regional power grid transmission channel and overloaded section. The coexistence of bottlenecks in grid transmission section and unused transmission capacity of lines seriously affects the overall power grid supply capacity and safety and reliability level. Aiming at the application scenario of new energy trend transmission channel

we propose a hybrid power flow controller(HPFC) based on cascade H bridge

which combines the advantages of passive phase-shifting transformer(PST) and active cascade H-bridge converter. Through the continuous adjustment of line impedance amplitude and phase angle

we can achieve the precise and rapid control of power flow. What's more

the theoretical analysis of the power flow regulation method of PST and the working principle of cascade H bridge helps to determine the working mode and operation range of HPFC. Furthermore

we propose a synergistic control strategy to address the differences between active and passive partial regulatory regions and speeds in the HPFC. Finally

based on the application scenario of 220 kV double circuit power grid

simulation analysis in the PSCAD/EMTDC environment verifies the feasibility of the proposed control strategy for a hybrid power flow controller based on a cascade H bridge.

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references

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