CN111799893A - 特高压线路取能电源和系统 - Google Patents

特高压线路取能电源和系统 Download PDF

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CN111799893A
CN111799893A CN202010751638.4A CN202010751638A CN111799893A CN 111799893 A CN111799893 A CN 111799893A CN 202010751638 A CN202010751638 A CN 202010751638A CN 111799893 A CN111799893 A CN 111799893A
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沈永福
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SUZHOU KANGKAI ELECTRIC CO Ltd
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SUZHOU KANGKAI ELECTRIC CO Ltd
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Priority to PCT/CN2020/141308 priority patent/WO2022021792A1/zh
Priority to US18/018,700 priority patent/US20230307949A1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/001—Energy harvesting or scavenging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

本发明涉及一种特高压线路取能电源和系统。特高压线路取能电源包括由特高压线路获取电能并转换为稳定直流电源输出的取能单元、将稳定直流电源转换为负载交流/直流电源并提供给负载的供能单元和等电位连接线，等电位连接线的两端分别与特高压线路和供能单元的输出端相连接。取能单元包括由特高压线路获取电能的取能装置、用于将取能装置所获取的电能转换为稳定直流电源并输出的AC/DC取能管理电路。供能单元包括将稳定直流电源转换为负载交流/直流电源并提供给负载的DC/AC或DC/DC恒流或恒压负载管理电路。特高压线路取能系统包括前述的特高压线路取能电源和管理端。本发明能够在特高压线路上直接获取能源，为负载提供稳定、可靠的电能。

Description

特高压线路取能电源和系统
技术领域
本发明涉及电源技术领域，具体涉及一种能够从特高压线路上直接获取能源的电源和系统。
背景技术
2020年6月25日张北500kV柔直电网试验示范工程组网成功，意味着直流特高压组网技术趋向成熟，直流特高压线路的大规模组网即将拉开序幕。紧接着直流800kV和直流1100kV特高压电网的组网即将推进。根据直流800kV和直流1100kV特高压电网的技术要求，特高压装备对供能电源设备的绝缘耐受电压应力要求也越来越高，传统的隔离电源已无法满足特高压装备的绝缘耐受电压应力要求，这将成为制约直流800kV以及直流1100kV特高压电网的组网技术前进的步伐。因此，为了满足供能电源设备的绝缘耐受电压应力要求，提高特高压直流电网的运行可靠性，需要设计一种新型电源装置。
发明内容
本发明的目的是提供一种绝缘耐受电压高、可靠性高，尤其是适用于直流特高压柔性组网中为特高压装备供能的特高压线路取能电源。
为达到上述目的，本发明采用的技术方案是：
一种特高压线路取能电源，用于为负载提供电能，所述特高压线路取能电源包括由特高压线路获取电能并转换为稳定直流电源输出的取能单元、将所述稳定直流电源转换为负载交流/直流电源并提供给所述负载的供能单元和等电位连接线，所述取能单元的输入端与所述特高压线路相连接，所述取能单元的输出端与所述供能单元的输入端相连接，所述等电位连接线的两端分别与所述特高压线路和所述供能单元的输出端相连接，所述负载与所述供能单元的输出端相连接。
所述取能单元包括由特高压线路获取电能的取能装置、用于将所述取能装置所获取的电能转换为所述稳定直流电源并输出的AC/DC取能管理电路。
所述取能装置包括用于将所述特高压线路输送电流时所产生的磁场转换为电能的取能环。
所述取能环设置在所述特高压线路上。
所述AC/DC取能管理电路包括构成取能回路的AC/DC转换模块、用于获取所述特高压线路上的电流大小并输出对应采样信号的采样模块、基于所述采样信号调节所述取能回路阻抗的调节模块。
所述供能单元包括用于将所述稳定直流电源转换为负载交流电源并提供给所述负载的DC/AC恒流或恒压负载管理电路，或者所述供能单元包括用于将所述稳定直流电源转换为负载直流电源并提供给所述负载的DC/DC恒流或恒压负载管理电路。
所述特高压线路取能电源还包括用于实现所述AC/DC取能管理电路、所述DC/AC恒流或恒压负载管理电路或者所述DC/DC恒流或恒压负载管理电路与管理端通讯的通讯模块。
所述通讯模块为RS485或TCP/IP模块。
本发明还提供一种基于上述特高压线路取能电源的特高压线路取能系统，其方案是：
一种特高压线路取能系统，包括如前述的特高压线路取能电源和管理端。所述管理端为特高压电网信息管理平台。
由于上述技术方案运用，本发明与现有技术相比具有下列优点：本发明能够在特高压线路上直接获取能源，具有绝缘耐受电压应力高、运行安全可靠等优点，适于为直流特高压柔性组网中的特高压装备供能。
附图说明
附图1为本发明的特高压线路取能电源的原理图。
具体实施方式
下面结合附图所示的实施例对本发明作进一步描述。
实施例一：如附图1所示，一种特高压线路取能电源，包括取能单元、供能单元和等电位连接线。取能单元的输入端与特高压线路相连接，取能单元的输出端与供能单元的输入端相连接，负载与供能单元的输出端相连接，从而该特高压线路取能电源能够为负载提供电能。
取能单元用于由特高压线路获取电能，并转换为稳定直流电源输出。取能单元包括取能装置和AC/DC取能管理电路。取能装置用于由特高压线路获取电能，由于特高压线路在输送电流时会在其附近的空间产生磁场，故取能装置可以采用能够将特高压线路输送电流时所产生的磁场转换为电能的取能环，取能环设置在特高压线路上。AC/DC取能管理电路用于将取能装置所获取的电能转换为稳定直流电源并输出。由于特高压线路上所传输电流的随机性变化很大，为了获取相对稳定的电源，故需要配置该AC/DC取能管理电路，由AC/DC取能管理电路根据特高压线路上电流的大小调节取能回路的阻抗，从而使所取电压达到相对稳定，因此，AC/DC取能管理电路包括构成取能回路的AC/DC转换模块、用于获取特高压线路上的电流大小并输出对应采样信号的采样模块、基于采样信号调节取能回路阻抗的调节模块。
供能单元用于将稳定直流电源转换为负载交流/直流电源并提供给负载（如特高压设备）。供能单元包括用于将取能单元输出的稳定直流电源转换为负载交流电源并提供给负载的DC/AC恒流或恒压负载管理电路，或者供能单元包括用于将取能单元输出的稳定直流电源转换为负载直流电源并提供给负载的DC/DC恒流或恒压负载管理电路。上述DC/AC或DC/DC恒流或恒压负载管理电路能够进一步提高能源转换效率，其保持最高的能源转换效率，从而保持负载稳定运行。
等电位连接线的两端分别与特高压线路和供能单元的输出端相连接，从而使所获取的能源与特高压线路等电位连接，故电源的耐受电压应力与特高压线路相等。
上述特高压线路取能电源还包括通讯模块，通过通讯模块能够实现AC/DC取能管理电路、DC/AC恒流或恒压负载管理电路或者DC/DC恒流或恒压负载管理电路与管理端通讯，从而取能管理电路、负载管理电路（包括DC/AC恒流或恒压负载管理电路、DC/DC恒流或恒压负载管理电路）可以通过通讯模块将特高压端的负载工况返回管理端，还可以通过管理端对负载进行管理。通讯模块可以设置两部分，分别与取能管理电路、负载管理电路相连接。通讯模块可以采用RS485或TCP/IP模块等。
基于上述特高压线路取能电源，可以构建特高压线路取能系统，该特高压线路取能系统包括上述具有通讯模块的特高压线路取能电源以及与其通讯的管理端，其中管理端为特高压电网信息管理平台。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (10)

1.一种特高压线路取能电源，用于为负载提供电能，其特征在于：所述特高压线路取能电源包括由特高压线路获取电能并转换为稳定直流电源输出的取能单元、将所述稳定直流电源转换为负载交流/直流电源并提供给所述负载的供能单元和等电位连接线，所述取能单元的输入端与所述特高压线路相连接，所述取能单元的输出端与所述供能单元的输入端相连接，所述等电位连接线的两端分别与所述特高压线路和所述供能单元的输出端相连接，所述负载与所述供能单元的输出端相连接。
2.根据权利要求1所述的特高压线路取能电源，其特征在于：所述取能单元包括由特高压线路获取电能的取能装置、用于将所述取能装置所获取的电能转换为所述稳定直流电源并输出的AC/DC取能管理电路。
3.根据权利要求2所述的特高压线路取能电源，其特征在于：所述取能装置包括用于将所述特高压线路输送电流时所产生的磁场转换为电能的取能环。
4.根据权利要求3所述的特高压线路取能电源，其特征在于：所述取能环设置在所述特高压线路上。
5.根据权利要求2所述的特高压线路取能电源，其特征在于：所述AC/DC取能管理电路包括构成取能回路的AC/DC转换模块、用于获取所述特高压线路上的电流大小并输出对应采样信号的采样模块、基于所述采样信号调节所述取能回路阻抗的调节模块。
6.根据权利要求2所述的特高压线路取能电源，其特征在于：所述供能单元包括用于将所述稳定直流电源转换为负载交流电源并提供给所述负载的DC/AC恒流或恒压负载管理电路，或者所述供能单元包括用于将所述稳定直流电源转换为负载直流电源并提供给所述负载的DC/DC恒流或恒压负载管理电路。
7.根据权利要求6所述的特高压线路取能电源，其特征在于：所述特高压线路取能电源还包括用于实现所述AC/DC取能管理电路、所述DC/AC恒流或恒压负载管理电路或者所述DC/DC恒流或恒压负载管理电路与管理端通讯的通讯模块。
8.根据权利要求7所述的特高压线路取能电源，其特征在于：所述通讯模块为RS485或TCP/IP模块。
9.一种特高压线路取能系统，其特征在于：所述特高压线路取能系统包括如权利要求7或8所述的特高压线路取能电源和管理端。
10.根据权利要求9所述的特高压线路取能系统，其特征在于：所述管理端为特高压电网信息管理平台。
CN202010751638.4A 2020-07-30 2020-07-30 特高压线路取能电源和系统 Pending CN111799893A (zh)

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WO2022021792A1 (zh) * 2020-07-30 2022-02-03 苏州康开电气有限公司 特高压线路取能电源和系统

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