CN112531708A - 一种svg可靠性提升的旁路*** - Google Patents

一种svg可靠性提升的旁路*** Download PDF

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CN112531708A
CN112531708A CN202011565764.7A CN202011565764A CN112531708A CN 112531708 A CN112531708 A CN 112531708A CN 202011565764 A CN202011565764 A CN 202011565764A CN 112531708 A CN112531708 A CN 112531708A
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范方起
申宁
韩猛
张俊
董金龙
吴苏平
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Shandong Taikai Power Electronic Co ltd
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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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
    • 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
    • H02J13/00017—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 using optical fiber
    • 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
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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    • H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
    • 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
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
    • H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/10—Flexible AC transmission systems [FACTS]
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
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    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
    • 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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Abstract

本发明公开了一种SVG可靠性提升的旁路***，包括SVG功率单元自动旁路单元，一拖二单元，机电联合控制旁路接触器单元；所述SVG功率单元自动旁路单元，一拖二单元，机电联合控制旁路接触器单元相互并联；本发明中SVG可靠性提升的旁路***可以实现故障不停机，自动完成故障链节旁路屏蔽，极大提高了设备持续运行时间；本发明大大简化了控制电路，提高了旁路可靠性，提高了工程实用价值。

Description

一种SVG可靠性提升的旁路***
技术领域
本发明涉及电能质量治理领域，尤其涉及一种SVG可靠性提升的旁路***。
背景技术
静止无功发生器，英文描述为：Static Var Generator，简称为SVG。又称高压动态无功补偿发生装置，或静止同步补偿器。是指由自换相的电力半导体桥式变流器来进行动态无功补偿的装置。SVG是目前无功功率控制领域内的最佳方案。相对于传统的调相机、电容器电抗器、以晶闸管控制电抗器TCR为主要代表的传统SVC等方式，SVG有着无可比拟的优势。
由于这些产品需要长期、持续的稳定工作,而且设备多数分散在沿海、山区、草原、戈壁等复杂地域，绝大多数现场交通条件极差，或无人值守的电站，不具备第一时间停电检修的条件，导致设备故障后立即停机，造成重大损失。
现有的旁路技术有的采用人工短接铜排方式，此方式还需要人到现场进行操作，极大限制了设备不间断运行功能。还有采用互取能的方式，从相邻链节取电，来维持故障链节的旁路接触器供电，在复杂的电磁环境下电保持接触器容易出现误分闸情况，造成设备断路等异常，可靠性不高。有的采用控制故障链节内部IGBT开通来实现软旁路功能，但是如果链节故障时损坏了IGBT，此情况下根本无法旁路功能。
发明内容
为解决上述技术问题，本发明提供了一种SVG可靠性提升的旁路***，本发明可以实现故障不停机，自动完成故障链节旁路屏蔽。
本发明是通过以下技术方案实现的：
一种SVG可靠性提升的旁路***，包括SVG功率单元自动旁路单元，一拖二单元，机电联合控制旁路接触器单元；所述SVG功率单元自动旁路单元，一拖二单元，机电联合控制旁路接触器单元相互并联；
所述SVG功率单元自动旁路单元包括：功率单元通过光纤通讯与控制器进行数据交互，当某个链节出现故障时，控制器第一时间根据当前设备运行工况和参数设置，对故障原因、旁路请求进行算法分析；在下发旁路命令控制字实现故障链节自动旁路的同时，控制器通过算法调整其他链节的PWM载波实现整机稳定输出当前***所需容量；旁路接触器给出闭合状态反馈，完成自动旁路流程。
所述一拖二单元包括：为方便接触器安装和铜排走线，采用一个接触器控制两个链节的安装方式；故障的功率单元发出请求旁路指令，控制器给出旁路命令后，相邻链节同时被旁路；
所述机电联合控制旁路接触器单元包括：当故障链节收到旁路命令后，电路板经过高电压隔离措施，发出多组脉冲控制晶闸管开通，实现电动合闸；接触器闭合后，会由机械结构持续保持此状态，安全可靠的实现旁路功能；接触器具备清晰的合闸、分闸指示和当前状态反馈点。
进一步，所述一拖二单元中的两个链节的结构相同。
进一步，所述机电联合控制旁路接触器单元中，当停电检修完毕后，再通过人工复位的方式，实现接触器分闸。
本发明具有以下有益效果：
1.SVG可靠性提升的旁路***可以实现故障不停机，自动完成故障链节旁路屏蔽，极大提高了设备持续运行时间。
2.本发明大大简化了控制电路，提高了旁路可靠性，提高了工程实用价值。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图：
图1为SVG功率单元自动旁路单元的结构示意图；
图2为一拖二单元的结构示意图；
图3为机电联合控制旁路接触器单元的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1-3所示，本发明为一种SVG可靠性提升的旁路***，包括SVG功率单元自动旁路单元，一拖二单元，机电联合控制旁路接触器单元；所述SVG功率单元自动旁路单元，一拖二单元，机电联合控制旁路接触器单元相互并联；
所述SVG功率单元自动旁路单元包括：功率单元通过光纤通讯与控制器进行数据交互，当某个链节出现故障时，控制器第一时间根据当前设备运行工况和参数设置，对故障原因、旁路请求进行算法分析；在下发旁路命令控制字实现故障链节自动旁路的同时，控制器通过算法调整其他链节的PWM载波实现整机稳定输出当前***所需容量；旁路接触器给出闭合状态反馈，完成自动旁路流程。
所述一拖二单元包括：为方便接触器安装和铜排走线，采用一个接触器控制两个链节的安装方式；故障的功率单元发出请求旁路指令，控制器给出旁路命令后，相邻链节同时被旁路；所述一拖二单元中的两个链节的结构相同；此方式降低了旁路接触器的个数，提高了工程应用价值；
所述机电联合控制旁路接触器单元包括：当故障链节收到旁路命令后，电路板经过高电压隔离措施，发出多组脉冲控制晶闸管开通，实现电动合闸；接触器闭合后，会由机械结构持续保持此状态，安全可靠的实现旁路功能；接触器具备清晰的合闸、分闸指示和当前状态反馈点；所述机电联合控制旁路接触器单元中，当停电检修完毕后，再通过人工复位的方式，实现接触器分闸。
一种对SVG可靠性提升的旁路控制***。功率单元通过光纤通讯与控制器进行数据交互，当某个链节出现故障时，控制器第一时间根据当前设备运行工况和参数设置，对故障原因、旁路请求进行算法分析。在下发旁路命令控制字实现故障链节自动旁路的同时，控制器通过算法调整其他链节的PWM载波实现整机稳定输出当前***所需容量。机电联合控制旁路接触器接收到控制信号后，在毫秒级完成闭合，并用机械结构持续保持此状态，同时给出闭合状态反馈，完成自动旁路流程。
SVG可靠性提升的旁路***可以实现故障不停机，自动完成故障链节旁路屏蔽，极大提高了设备持续运行时间；此方案大大简化了控制电路，提高了旁路可靠性，提高了工程实用价值。

Claims (3)

1.一种SVG可靠性提升的旁路***，包括SVG功率单元自动旁路单元，一拖二单元，机电联合控制旁路接触器单元；所述SVG功率单元自动旁路单元，一拖二单元，机电联合控制旁路接触器单元相互并联；其特征在于：
所述SVG功率单元自动旁路单元包括：功率单元通过光纤通讯与控制器进行数据交互，当某个链节出现故障时，控制器第一时间根据当前设备运行工况和参数设置，对故障原因、旁路请求进行算法分析；在下发旁路命令控制字实现故障链节自动旁路的同时，控制器通过算法调整其他链节的PWM载波实现整机稳定输出当前***所需容量；旁路接触器给出闭合状态反馈，完成自动旁路流程；
所述一拖二单元包括：为方便接触器安装和铜排走线，采用一个接触器控制两个链节的安装方式；故障的功率单元发出请求旁路指令，控制器给出旁路命令后，相邻链节同时被旁路；
所述机电联合控制旁路接触器单元包括：当故障链节收到旁路命令后，电路板经过高电压隔离措施，发出多组脉冲控制晶闸管开通，实现电动合闸；接触器闭合后，会由机械结构持续保持此状态，安全可靠的实现旁路功能；接触器具备清晰的合闸、分闸指示和当前状态反馈点。
2.根据权利要求1所述的一种SVG可靠性提升的旁路***，其特征在于：所述一拖二单元中的两个链节的结构相同。
3.根据权利要求1所述的一种SVG可靠性提升的旁路***，其特征在于：所述机电联合控制旁路接触器单元中，当停电检修完毕后，再通过人工复位的方式，实现接触器分闸。
CN202011565764.7A 2020-12-25 2020-12-25 一种svg可靠性提升的旁路*** Pending CN112531708A (zh)

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