Optimal Combination of Operation Strategy for Power Electronic Transformer Based on Generalized Droop Control

Liping HU; Yingyun SUN; Chunfei WANG; Tianjiao PU; Naishi CHEN; Ke SUN

doi:10.7500/AEPS20190319005

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Optimal Combination of Operation Strategy for Power Electronic Transformer Based on Generalized Droop Control

Basic Research | 更新时间：2025-06-16

- Optimal Combination of Operation Strategy for Power Electronic Transformer Based on Generalized Droop Control
- Automation of Electric Power Systems Vol. 44, Issue 3, Pages: 40-48(2020)
- 作者机构：
  
  1. 华北电力大学电气与电子工程学院，北京市 102206
  2. 中国电力科学研究院有限公司，北京市 100192
  3. 国网经济技术研究院有限公司，北京市 102209
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China;National Natural Science Foundation of China
- DOI：10.7500/AEPS20190319005
  CLC：
- Received：19 March 2019，
  
  Revised：2019-07-22，
  
  Published Online：11 October 2019，
  
  Published：25 March 2020
- 稿件说明：
移动端阅览
胡丽萍,孙英云,王春斐等.基于广义下垂控制的电力电子变压器运行策略优化组合[J].电力系统自动化,2020,44(03):40-48.

HU Liping,SUN Yingyun,WANG Chunfei,et al.Optimal Combination of Operation Strategy for Power Electronic Transformer Based on Generalized Droop Control[J].Automation of Electric Power Systems,2020,44(03):40-48.
胡丽萍,孙英云,王春斐等.基于广义下垂控制的电力电子变压器运行策略优化组合[J].电力系统自动化,2020,44(03):40-48. DOI： 10.7500/AEPS20190319005.

HU Liping,SUN Yingyun,WANG Chunfei,et al.Optimal Combination of Operation Strategy for Power Electronic Transformer Based on Generalized Droop Control[J].Automation of Electric Power Systems,2020,44(03):40-48. DOI： 10.7500/AEPS20190319005.

摘要

针对多台电力电子变压器构成的交直流混合系统中，电力电子变压器端口运行模式复杂，组合多样的问题，提出了一种基于广义交直流下垂控制的电力电子变压器运行策略优化组合方法，在保证系统安全运行的同时保证可再生能源的充分消纳。广义交直流下垂控制可通过控制系数的调整来近似端口运行模式的切换，避免了在非线性规划模型中引入整数变量，有效降低了模型的复杂度。在此基础上

建立了考虑可再生能源不确定性的电力电子变压器运行策略鲁棒组合优化模型，并进一步采用双层优化方法对所提模型进行求解，算例仿真结果证明了该方法的有效性与可行性。

Abstract

For the complexity of operation mode of the power electronic transformer (PET) ports and their multiple combinations in hybrid AC/DC grid composed of several PETs

an optimal combination method of operation strategy for PETs based on generalized AC/DC droop control (GADDC) is proposed

the objective of which is to fully utilize the renewable energy while maintaining the stability operation of power system. The switching between different control modes of PET ports could be approximated by adjusting the coefficients of GADDC

which avoids importing integer variables in the non-linear programming model

thus effectively reducing the complexity of the proposed model. Based on this

a robust combined optimization model of PET operation strategy considering the uncertainty of renewable energy is established. Furthermore

a bi-level optimization method is adopted to solve the proposed model. Simulation results verify the effectiveness and feasibility of the proposed method.

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Keywords

references

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