Emergency Overload Operation Strategy for Sending Transmission Channel of Wind Power Considering Dynamic Overload Capability of Equipment

Qiang CHEN; Jian WANG; Xiaofu XIONG; Qianggang WANG; Yi LONG

doi:10.7500/AEPS20191214007

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Emergency Overload Operation Strategy for Sending Transmission Channel of Wind Power Considering Dynamic Overload Capability of Equipment

Application Research | 更新时间：2025-06-16

- Emergency Overload Operation Strategy for Sending Transmission Channel of Wind Power Considering Dynamic Overload Capability of Equipment
- Automation of Electric Power Systems Vol. 44, Issue 15, Pages: 163-171(2020)
- 作者机构：
  
  1. 重庆大学输配电装备及系统安全与新技术国家重点实验室，重庆市 400030
  2. 国网四川省电力公司检修公司，四川省成都市 610042
- 作者简介：
- 基金信息：
  
  Abstract:
  When large-scale wind power are integrated to the grid in a centralized way, an N-1 fault in the sending transmission channel may overload the transmission lines and step-up transformers. However, the existing overload protection and stability and control strategies cannot adapt to this short-term power flow overload, so a large number of wind turbines need to be cut off, which is not conducive to wind power consumption. The paper analyzes the key parameters and safety boundaries of safety overload capacity for power equipment , and determines the long-term and short-term overload zones of transmission lines and transformers. According to the safety overload capacity of the equipment, the emergency overload operation strategy of the transmission channel is proposed, which is suitable for the grid connection of the wind farm cluster, including the heavy overload alarm based on the long-term overload zone, the wind turbine cutting-off and the over-limit-tripping due to the temperature rising of the equipment based on the short-term overload zone. The test results show that the proposed strategy is feasible, which can fully tap the overload capacity of the transmission channel and improve the wind power transmission capacity on the premise of ensuring the safe operation of the transmission channel.
  Foundation:This work is supported by National Natural Science Foundation of China;National Natural Science Foundation of China-State Grid Joint Fund for Smart Grid
- DOI：10.7500/AEPS20191214007
  CLC：
- Received：14 December 2019，
  
  Revised：2020-04-13，
  
  Published Online：04 June 2020，
  
  Published：10 August 2020
- 稿件说明：
移动端阅览
陈强,王建,熊小伏等.考虑设备动态过载能力的风电送出通道紧急过载运行策略[J].电力系统自动化,2020,44(15):163-171.

CHEN Qiang,WANG Jian,XIONG Xiaofu,et al.Emergency Overload Operation Strategy for Sending Transmission Channel of Wind Power Considering Dynamic Overload Capability of Equipment[J].Automation of Electric Power Systems,2020,44(15):163-171.
陈强,王建,熊小伏等.考虑设备动态过载能力的风电送出通道紧急过载运行策略[J].电力系统自动化,2020,44(15):163-171. DOI： 10.7500/AEPS20191214007.

CHEN Qiang,WANG Jian,XIONG Xiaofu,et al.Emergency Overload Operation Strategy for Sending Transmission Channel of Wind Power Considering Dynamic Overload Capability of Equipment[J].Automation of Electric Power Systems,2020,44(15):163-171. DOI： 10.7500/AEPS20191214007.

摘要

大规模风电集中并网时，送出通道发生

-1故障，可能会导致输电线路和升压变压器过载，而现有的过负荷保护和稳定控制策略无法适应这种短时潮流过载，需要切除大量风电机组，不利于风电消纳。论文分析了电力设备安全过载能力的关键参数及安全边界，确定了送出线路和变压器的长时过载区域与短时过载区域。依据设备的安全过载能力，提出了适应风电场集群并网的输电通道紧急过载运行策略，包括和基于短时过载区域的风电切机与设备温升越限跳闸。测试结果表明，所提紧急过载运行策略具有可行性，能够充分挖掘输电通道的过载能力，在保障输电通道安全运行的前提下，提高风电外送能力。

Abstract

When large-scale wind power are integrated to the grid in a centralized way

-1 fault in the sending transmission channel may overload the transmission lines and step-up transformers. However

the existing overload protection and stability and control strategies cannot adapt to this short-term power flow overload

so a large number of wind turbines need to be cut off

which is not conducive to wind power consumption. The paper analyzes the key parameters and safety boundaries of safety overload capacity for power equipment

and determines the long-term and short-term overload zones of transmission lines and transformers. According to the safety overload capacity of the equipment

the emergency overload operation strategy of the transmission channel is proposed

which is suitable for the grid connection of the wind farm cluster

including the heavy overload alarm based on the long-term overload zone

the wind turbine cutting-off and the over-limit-tripping due to the temperature rising of the equipment based on the short-term overload zone. The test results show that the proposed strategy is feasible

which can fully tap the overload capacity of the transmission channel and improve the wind power transmission capacity on the premise of ensuring the safe operation of the transmission channel.

关键词

Keywords

references

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