Exploration of Bundled Transaction Model for All Clean Energy Transmission of Qing-Yu UHV DC Project

Yuankang HE; Ruifeng LIU; Tian'en CHEN; Zhaohong BIE

doi:10.11930/j.issn.1004-9649.202007220

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Exploration of Bundled Transaction Model for All Clean Energy Transmission of Qing-Yu UHV DC Project

Power System | 更新时间：2025-06-18

- Exploration of Bundled Transaction Model for All Clean Energy Transmission of Qing-Yu UHV DC Project
- Electric Power Vol. 54, Issue 7, Pages: 83-92(2021)
- 作者机构：
  
  1.国家电网公司西北分部，陕西西安　710048
  2.西安交通大学电气工程学院，陕西西安　710049
- 作者简介：
- 基金信息：
  
  This work is supported by National Key R&D Program of China (No.2016YFB0901900), National Natural Science Foundation of China (No.51977166), Management Consulting Project of SGCC (No.SGNW0000DKWT2000176), Science and Technology Project of SGCC (No.SGNW0000DKJS2000167)
- DOI：10.11930/j.issn.1004-9649.202007220
  CLC：
- Received：07 August 2020，
  
  Revised：2021-02-03，
  
  Published：05 July 2021
- 稿件说明：
移动端阅览
Yuankang HE, Ruifeng LIU, Tian'en CHEN, et al. Exploration of Bundled Transaction Model for All Clean Energy Transmission of Qing-Yu UHV DC Project[J]. Electric power, 2021, 54(7): 83-92.
DOI：

Yuankang HE, Ruifeng LIU, Tian'en CHEN, et al. Exploration of Bundled Transaction Model for All Clean Energy Transmission of Qing-Yu UHV DC Project[J]. Electric power, 2021, 54(7): 83-92. DOI： 10.11930/j.issn.1004-9649.202007220.

摘要

全清洁能源特高压青豫直流工程顺利投产初期，由于配套电源尚未全部投运，青海水电峰枯季节出力差异较大，新能源出力随机性、间歇性和波动性问题突出，仅依托青海难以满足直流大功率稳定输电要求。在深入分析青豫直流送端青海电网的负荷特性和发电特性的基础上，开展青豫直流外送电力平衡分析，针对存在的峰盈谷缺和汛富枯贫问题，提出发挥西北电网整体合力，实现西北多省份清洁能源打捆外送的模式，在新能源大发、新能源小发、黄河丰水期、黄河枯水期4种场景下开展模拟测算，结果表明，通过清洁能源打捆外送可有效提升特高压青豫直流稳定外送水平。

Abstract

At present

the Qing (Qinghai)-Yu(Henan) UHV DC Project for all-clean energy transmission has been put into operation

but the supporting power sources have not been fully put into production yet. Due to the big output difference of hydropower between flood and dry seasons

and the stochastic

intermittent and fluctuating characteristics of wind and photovoltaic power output

it is hard to meet the requirements for large-power and stable transmission of Qing-Yu UHV DC Project by Qinghai Grid alone. Based on an investigation of the load and generation characteristics of the sending-end Qinghai Grid

a power balance analysis is carried out for the outbound transmission of the Qing-Yu DC Project. Aiming at the problems of surplus in peak time while shortage in valley time

and rich in flood season while poor in dry season for power output in the Qinghai Grid

the paper proposes a bundled clean energy transaction model for multiple provinces in the northwest region

so as to give a full play of the overall dispatching role of the Northwest Power Grid. Simulations are carried out under four scenarios

including the new energy enrichment and barren periods

the flood season and the dry season of the Yellow River. The results show that the bundled transaction of clean energy can significantly improve the stable outbound transmission level of the Qing-Yu UHV DC Project.

关键词

Keywords

references

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