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基于自适应功率输出控制的电流互感器取能电源设计方法
作者:
作者单位:

1.山东理工大学电气与电子工程学院,山东省 淄博市 255049;2.山东科汇电力自动化股份有限公司,山东省 淄博市 255087

作者简介:

张鹏(1994—),男,硕士研究生,主要研究方向:配电自动化、电气测量。E-mail:zpsdut@163.com
王玮(1983—),男,通信作者,副教授,主要研究方向:电气测量、配电自动化、嵌入式系统设计。E-mail:wwsdut@163.com
徐丙垠(1961—),男,教授,博士生导师,主要研究方向:电力线路故障监测、配电自动化、微电网控制与保护。E-mail:xuby@vip.163.com

通讯作者:

基金项目:

山东省重点研发计划(公益类)资助项目(2019GGX104025);国家重点研发计划资助项目(2016YFB0900600)。


Design Method of Energy-gaining Power Supply for Current Transformer Based on Self-adaptive Power Output Control
Author:
Affiliation:

1.College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China;2.Shandong Kehui Power Automation Co., Ltd., Zibo 255087, China

Fund Project:

This work is supported by Shandong Provincial Key R&D Program of China (Public Welfare) (No. 2019GGX104025) and National Key R&D Program of China (No. 2016YFB0900600).

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    摘要:

    电流互感器取能电源在母线大电流时存在发热问题,影响电源的使用寿命。为此,文中提出了一种基于自适应功率输出控制的电流互感器取能电源设计方法。在分析电流互感器取电原理的基础上建立了电流互感器取能线圈的负载等效模型,推导了线圈的输出功率与母线电流的关系。通过控制双向晶闸管的通断达到控制取能线圈功率输出的目的,保证了电源在大电流时不发热。给出了该自适应功率输出控制电路的实现形式,通过建立其等效模型,推导了导通角与母线电流的关系。试验表明,依据所提设计方法制作的电源样机可在宽电流范围内工作在低热耗状态,验证了所提方法的可行性。

    Abstract:

    The energy-gaining power supply of current transformer has the heating problem when the bus current is high, which affects the service life of power supply. For this reason, this paper proposes a design method of the energy-gaining power supply for the current transformer based on self-adaptive power output control. Based on the analysis of the power acquiring principle of current transformer, the load equivalent model of energy-gaining coil of the current transformer is established, and the relationship between the output power of the coil and the bus current is derived. By controlling the on-off state of the bidirectional thyristor, the purpose of controlling the power output of energy-gaining coil is achieved, and it is ensured that the power supply does not heat up at a large current. An implementation form of self-adaptive power output control circuit is given. By establishing its equivalent model, the relationship between the conduction angle and the bus current is derived. Finally, the experiment shows that the power prototype made according to the proposed design method can work in a low heat consumption state in a wide current range, which verifies the feasibility of the proposed method.

    表 1 不同母线电流下的导通角与实际输出功率Table 1 Conduction angle and actual output power with different bus currents
    图1 自适应控制原理简单示意图Fig.1 Simple schematic diagram of self-adaptive control principle
    图2 双向晶闸管及储能电容状态图Fig.2 State diagram of bidirectional thyristor and energy storage capacitor
    图3 自适应功率输出控制电路Fig.3 Control circuit of self-adaptive power output
    图4 自适应功率输出控制电路时序图Fig.4 Time sequence diagram for control circuit of self-adaptive power output
    图5 自适应功率输出控制等效电路Fig.5 Equivalent circuit of self-adaptive power output control
    图6 不同母线电流下的电压波形Fig.6 Voltage waveform with different bus currents
    图 带负载的取能线圈等效模型Fig. Equivalent model of the energy-carrying coil with load
    图 带负载的取能线圈等效电路Fig. Equivalent circuit of the energy-carrying coil with load
    图 带阻性负载的取能线圈模型矢量图Fig. Vector of draw-out power winding with resistive load
    图 电流互感器取能电源结构框图Fig. Block diagram of current transformer power supply
    图 试验测试平台Fig. Test platform
    图 不同母线电流时的电压波形图Fig. Voltage waveform with different bus currents
    图1 自适应控制原理简单示意图Fig.1 Simple schematic diagram of self-adaptive control principle
    图2 双向晶闸管及储能电容状态图Fig.2 State diagram of bidirectional thyristor and energy storage capacitor
    图3 自适应功率输出控制电路Fig.3 Control circuit of self-adaptive power output
    图4 自适应功率输出控制电路时序图Fig.4 Time sequence diagram for control circuit of self-adaptive power output
    图5 自适应功率输出控制等效电路Fig.5 Equivalent circuit of self-adaptive power output control
    图6 不同母线电流下的电压波形Fig.6 Voltage waveform with different bus currents
    图 带负载的取能线圈等效模型Fig. Equivalent model of the energy-carrying coil with load
    图 带负载的取能线圈等效电路Fig. Equivalent circuit of the energy-carrying coil with load
    图 带阻性负载的取能线圈模型矢量图Fig. Vector of draw-out power winding with resistive load
    图 电流互感器取能电源结构框图Fig. Block diagram of current transformer power supply
    图 试验测试平台Fig. Test platform
    图 不同母线电流时的电压波形图Fig. Voltage waveform with different bus currents
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引用本文

张鹏,王玮,徐丙垠,等.基于自适应功率输出控制的电流互感器取能电源设计方法[J].电力系统自动化,2020,44(3):194-200. DOI:10.7500/AEPS20190624006.
ZHANG Peng,WANG Wei,XU Bingyin,et al.Design Method of Energy-gaining Power Supply for Current Transformer Based on Self-adaptive Power Output Control[J].Automation of Electric Power Systems,2020,44(3):194-200. DOI:10.7500/AEPS20190624006.

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历史
  • 收稿日期:2019-06-24
  • 最后修改日期:2019-09-18
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  • 在线发布日期: 2020-02-14
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