静止无功补偿器和发射器在电弧炉动态无功补偿系统中的应用

卢晶; 茆华风; 傅鹏; 李俊; 沈显顺; 吴亚楠

doi:10.11884/HPLPB201931.180349

静止无功补偿器和发射器在电弧炉动态无功补偿系统中的应用

doi: 10.11884/HPLPB201931.180349

卢晶^1,,
茆华风¹,
傅鹏^{1, 2},
李俊¹,
沈显顺^{1, 2},
吴亚楠^1, ,

1.
中国科学院等离子体物理研究所，合肥 230031
2.
中国科学技术大学研究生院科学岛分院，合肥 230031

基金项目:

国家自然科学基金项目 51707190

详细信息

作者简介:
卢晶(1989—)，男，博士，助理研究员，主要从事无功补偿、有源滤波控制方面研究; lujing@ipp.ac.cn

通讯作者:
吴亚楠(1986—)，男，博士，副研究员，主要从事大容量特种电源与电网兼容性研究; wyn@ipp.ac.cn

中图分类号: TM712
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出版历程
- 收稿日期: 2018-12-03
- 修回日期: 2019-02-20
- 刊出日期: 2019-05-15

Application of static var compensation and static var generator in dynamic reactive power compensation system of electric arc furnace

Lu Jing^1
,,
Mao Huafeng¹,
Fu Peng^{1, 2},
Li Jun¹,
Shen Xianshun^{1, 2},
Wu Ya'nan^{1
, ,}

1.
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
2.
Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230031, China

摘要

摘要: 发展高效绿色电炉冶炼技术是淘汰落后产能、钢铁产业调整升级的重要举措。电弧炉作为核心生产设备，防止其生产运行中无功冲击造成的电压跌落至关重要。而目前单一的有源、无源补偿方式无法同时满足电弧炉负荷日益增长的大容量且快速响应的无功补偿需求。研究了静止无功补偿器(SVC)和静止无功发射器(SVG)相结合的混联补偿方式，分析了SVC在分相不平衡大容量补偿及SVG在无功快速响应方面中的特性，并针对某钢厂电弧炉工作运行情况，计算其无功需求，充分利用其原有的SVC装置，设计混联SVG方案来抵消剩余无功缺口，使用PSCAD/EMTDC进行了联合应用仿真，证实其理论有效性。
- 电弧炉 /
- 动态无功补偿 /
- SVC/SVG联合装置 /
- PSCAD/EMTDC系统仿真
Abstract: The development of high-efficiency green electric furnace smelting technology is an important measure to eliminate backward production capacity and upgrade the steel industry. It is essential to prevent voltage drops caused by reactive power shocks in electric arc furnace operations. At present, the single active or passive compensation method cannot meet the need of both the increasing large capacity load and fast response period of reactive power compensation device. The hybrid compensation method combining static var compensation(SVC) and static var generator(SVG) is studied in this paper. The characteristics of SVC in phase-separated unbalanced large-capacity compensation and SVG in fast response of reactive power are analyzed. The reactive power demand of an electric arc furnace is calculated. A hybrid scheme is designed to offset the residual reactive power gap, and PSCAD/EMTDC is applied for joint application simulation to confirm the theoretical validity.
- electric arc furnace /
- dynamic reactive power compensation /
- SVC/SVG joint device /
- PSCAD/EMTDC system simulation

HTML全文

图 1 TCR型SVC结构图

Figure 1. TCR+FC type SVC

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图 2 SVC控制结构框图

Figure 2. SVC control block

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图 3 典型SVG逆变器的电路拓扑

Figure 3. Typical topology of SVG

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图 4 基于p-q理论的谐波检测算法

Figure 4. Harmonic detection algorithm based on p-q theory

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图 5 SVG逆变器的控制框图

Figure 5. Control block of SVG

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图 6 某钢厂电弧炉系统主接线图

Figure 6. Main topology of EAF system in a steel mill

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图 7 系统仿真结构图

Figure 7. System simulation block

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图 8 SVC控制模块

Figure 8. SVC control block

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图 9 SVG控制模块

Figure 9. SVG control block

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图 10 TCR环内电流

Figure 10. Phase current of TCR

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图 11 SVG发出的无功量

Figure 11. Reactive power generated by SVG

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图 12 投入SVC，未投SVG负荷和母线的无功功率

Figure 12. Reactive power on load and grid without SVG

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图 13 负荷与母线的无功功率

Figure 13. Reactive power on load and grid with SVG and SVC

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参考文献(15)

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