WO2017125011A1 - Method for recovering power supply after tripping activated for direct-current ground protection - Google Patents
Method for recovering power supply after tripping activated for direct-current ground protection Download PDFInfo
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- WO2017125011A1 WO2017125011A1 PCT/CN2017/071508 CN2017071508W WO2017125011A1 WO 2017125011 A1 WO2017125011 A1 WO 2017125011A1 CN 2017071508 W CN2017071508 W CN 2017071508W WO 2017125011 A1 WO2017125011 A1 WO 2017125011A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
Definitions
- the two uplink antenna lines are respectively supported by magnetic levitation The flow rail and the magnetic levitation upstream return rail.
- the response process includes the following steps:
- the method for recovering power supply after the DC grounding protection starts to trip after the invention is particularly suitable for a magnetic levitation system (such as a medium-low speed magnetic levitation system), and can effectively identify the fault and quickly recover after the DC grounding protection in the DC traction system starts to trip. powered by.
- a magnetic levitation system such as a medium-low speed magnetic levitation system
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Abstract
Method for recovering power supply after tripping activated for direct-current ground protection, comprising the steps of: (1) fault detection: a direct-current ground protection device being connecting to a power supply system for detecting a fault in the power supply system, wherein the power supply system comprises two uplink grid contact lines, two downlink grid contact lines and several feeder cabinets, any one of the feeder cabinets being connected to the two uplink grid contact lines or the two downlink grid contact lines; all the feeder cabinets are connected to the direct-current ground protection device; and when the direct-current ground protection device detects a fault, tripping occurs to all the feeder cabinets; and (2) response processing: according to whether the feeder cabinets are simultaneously connected to the two uplink grid contact lines and the two downlink grid contact lines, processing is carried out separately according to two conditions. Due to the improvements in the fault recognition principle of a power supply system, the method for recovering power supply after tripping activated for direct-current ground protection, and the like, the beneficial effects of high failure recognition rate and high power supply recovery speed can be achieved.
Description
本发明属于城市轨道交通领域，更具体地，涉及一种直流接地保护启动跳闸后恢复供电的方法，该方法尤其适用于磁悬浮系统(如中低速磁悬浮系统)，当直流牵引系统中的直流接地保护启动跳闸后，可以快速恢复供电。The invention belongs to the field of urban rail transit, and more particularly relates to a method for restoring power supply after DC grounding protection starts tripping, and the method is especially suitable for a magnetic levitation system (such as a medium and low speed magnetic levitation system), and DC grounding protection in a DC traction system. After the trip is initiated, the power can be quickly restored.
铁路设施，如高铁、地铁、磁悬浮交通、有轨电车等铁路设施，其电气设计是驱动线路以及故障保护的关键，对铁路设施的安全运行具有重要影响。目前，轨道交通(如地铁、有轨电车)等没有设置直流接地保护，而由于磁悬浮轨道交通直流牵引供电系统与传统地铁供电方式相比，其负极不通过走行轨回流，而是另设负极轨回流，因此，为了检测直流接地漏电及保证人身安全，需要在每个变电所内设置一套直流接地保护装置，当故障发生时，直流接地保护可以启动跳闸实现断电。Railway facilities, such as high-speed rail, subway, magnetic levitation traffic, trams and other railway facilities, its electrical design is the key to drive lines and fault protection, and has an important impact on the safe operation of railway facilities. At present, there is no DC grounding protection for rail transit (such as subways and trams), and because the magnetic traction rail transit DC traction power supply system is compared with the traditional subway power supply mode, the negative pole does not pass the running rail reflow, but the negative pole rail is separately provided. Reflow, therefore, in order to detect DC ground leakage and ensure personal safety, a DC grounding protection device needs to be installed in each substation. When a fault occurs, the DC grounding protection can initiate a trip to achieve power failure.
在现有的轨道交通中没有用到直流接地保护装置，但是其他的保护跳闸后，采取的快速恢复供电的方法是不区分上、下行，直接启动启动重合闸，另一方面，磁悬浮系统由于其自身的特点，采用三轨授流、四轨回流的方式，必须采用直流接地保护，而直流接地保护动作时不区分上下行的，需同时跳开上下行的所有馈线，故障范围较大，严重时可能导致磁浮列车停运，而磁浮列车如果停运，救援的压力很大，目前尚无有效的救援方案，因此需尽快恢复接触轨供电，确保磁浮列车不停运。In the existing rail transit, the DC grounding protection device is not used, but after the other protection trips, the method of quickly recovering the power supply is to distinguish the upper and lower sides and directly start the reclosing. On the other hand, the magnetic levitation system Its own characteristics, using three-track flow, four-track reflow, must use DC grounding protection, while DC grounding protection does not distinguish between uplink and downlink, it is necessary to jump off all feeders at the same time, the fault range is large, serious When the maglev train is out of service, the pressure of the maglev train is very high. There is no effective rescue plan. Therefore, it is necessary to restore the contact rail power as soon as possible to ensure that the maglev train will not stop.
【发明内容】[Summary of the Invention]
针对现有技术的以上缺陷或改进需求，本发明的目的在于提供一种直流接地保护启动跳闸后恢复供电的方法，其中通过对其关键工艺步骤譬如
故障判断等进行改进，与现有技术相比能够有效解决供电系统中直流接地保护启动跳闸后恢复供电的问题，尤其适用于磁悬浮系统中，故障识别效率高，能够实现快速恢复供电。In view of the above drawbacks or improvement requirements of the prior art, an object of the present invention is to provide a method for restoring power supply after a DC grounding protection starts tripping, wherein the key process steps are
The fault judgment and the like are improved, and the problem of restoring the power supply after the DC grounding protection starts to trip in the power supply system can be effectively solved compared with the prior art, and is particularly suitable for the magnetic levitation system, the fault recognition efficiency is high, and the power supply can be quickly restored.
为实现上述目的，按照本发明的一个方面，提供了一种直流接地保护启动跳闸后恢复供电的方法，其特征在于，包括以下步骤：In order to achieve the above object, according to an aspect of the present invention, a method for restoring power after a DC ground protection start trip is provided, which is characterized by comprising the following steps:
(1)检测故障：直流接地保护装置与供电系统相连，用于检测供电系统故障；该供电系统包括两条上行触网线、两条下行触网线和若干个馈线柜，任意一个所述馈线柜与所述两条上行触网线或所述两条下行触网线连接；所述馈线柜均与所述直流接地保护装置相连，当所述直流接地保护装置检测到故障时，所述馈线柜均跳闸；(1) Detection failure: The DC grounding protection device is connected to the power supply system for detecting the failure of the power supply system; the power supply system includes two uplink antenna lines, two downlink antenna lines, and a plurality of feeder cabinets, and any one of the feeder cabinets The two uplink antenna lines or the two downlink antenna lines are connected; the feeder cabinets are all connected to the DC ground protection device, and when the DC ground protection device detects a fault, the feeder cabinets are all tripped;
(2)响应处理：(2) Response processing:
当所述馈线柜均同时与所述两条上行触网线相连或者同时与所述两条下行触网线相连时，对所述馈线柜同时测试合闸，将所述馈线柜通电，其中当所述直流接地保护装置不再检测到故障信号时，则对所述馈线柜恢复供电；当所述直流接地保护装置仍然检测到故障信号时，则对所述馈线柜断电并闭锁；When the feeder cabinets are simultaneously connected to the two uplink antenna lines or simultaneously connected to the two downlink antenna lines, the feeder cabinet is simultaneously tested for closing, and the feeder cabinet is powered, wherein When the DC grounding protection device no longer detects the fault signal, the power supply is restored to the feeder cabinet; when the DC grounding protection device still detects the fault signal, the feeder cabinet is powered off and blocked;
当部分所述馈线柜与所述两条上行触网线相连、且部分所述馈线柜与所述两条下行触网线相连时，对与所述两条上行触网线相连的馈线柜测试合闸，将这部分馈线柜通电，当所述直流接地保护装置不再检测到故障信号时，则上行触网排除故障，将与所述两条下行触网线相连的馈线柜闭锁；当所述直流接地保护装置仍然检测到故障信号时，则将与所述两条上行触网线相连的馈线柜闭锁，然后再对与所述两条下行触网线相连的馈线柜测试合闸，将这部分与所述两条下行触网线相连的馈线柜通电，当所述直流接地保护装置不再检测到故障信号时，则对与所述两条下行触网线相连的馈线柜恢复供电，否则对与所述两条下行触网线相连的馈线柜断电并闭锁。When a part of the feeder cabinet is connected to the two uplink antenna lines, and some of the feeder cabinets are connected to the two downlink antenna lines, the feeder cabinet connected to the two uplink antenna lines is tested and closed. The part of the feeder cabinet is energized. When the DC grounding protection device no longer detects the fault signal, the uplink antenna is faulty, and the feeder cabinet connected to the two downlink antenna lines is blocked; when the DC grounding protection is performed When the device still detects the fault signal, the feeder cabinet connected to the two uplink antenna lines is blocked, and then the feeder cabinet connected to the two downlink antenna lines is tested and closed, and the part is combined with the two The feeder cabinet connected to the downlink network cable is energized, and when the DC ground protection device no longer detects the fault signal, the power supply cabinet connected to the two downlink antenna cables is restored, otherwise the two downlinks are The feeder cabinet connected to the touch cable is powered off and blocked.
作为本发明的进一步优选，所述两条上行触网线分别为磁悬浮上行授
流轨和磁悬浮上行回流轨。As a further preferred embodiment of the present invention, the two uplink antenna lines are respectively supported by magnetic levitation
The flow rail and the magnetic levitation upstream return rail.
作为本发明的进一步优选，所述两条下行触网线分别为磁悬浮下行授流轨和磁悬浮下行回流轨。As a further preferred embodiment of the present invention, the two downlink antenna lines are a magnetic levitation downward flow rail and a magnetic levitation downlink return rail, respectively.
通过本发明所构思的以上技术方案，与现有技术相比，由于对供电系统的故障识别原理、直流接地保护启动跳闸后恢复供电的方法等进行改进，能够取得故障识别效率高、恢复供电速度快的有益效果。According to the above technical solution conceived by the present invention, compared with the prior art, due to the improvement of the fault identification principle of the power supply system and the method of restoring the power supply after the DC grounding protection starts to trip, the fault recognition efficiency is high and the power supply speed is restored. Quick benefits.
本发明中直流接地保护启动跳闸后恢复供电的方法能够在发生直流接地保护故障后，快速确定故障范围，快速恢复无故障线路供电。当发生直流接地保护故障，正在运行的馈线柜全部跳闸，然后按照上、下行顺序逐项进行测试合闸，没有运行的馈线柜不进行测试合闸。由于磁悬浮轨道交通直流牵引供电系统与传统地铁供电方式的不同之处在于负极不通过走行轨回流，而是另设负极轨回流。为了检测直流接地漏电及保证人身安全，需在每个变电所内设置一套直流接地保护装置：当直流接地保护装置检测到故障使馈线柜跳闸时，现有的方法往往不能快速使其恢复供电，影响磁悬浮线路的正常运行，本发明通过设计直流接地保护启动跳闸后恢复供电的方法，克服了供电系统中故障识别以及恢复供电的技术问题，当直流接地保护检测到故障后，可以快速恢复供电。In the invention, the method for restoring the power supply after the DC grounding protection starts to trip can quickly determine the fault range after the DC grounding protection fault occurs, and quickly restore the power supply of the faultless line. When a DC grounding protection fault occurs, all the feeder cabinets that are running are tripped, and then the test is closed one by one in the order of up and down, and the feeders that are not running are not tested and closed. The difference between the magnetic levitation rail transit DC traction power supply system and the traditional subway power supply mode is that the negative pole does not pass through the running rail reflow, but the negative pole rail recirculation is additionally provided. In order to detect DC earth leakage and ensure personal safety, a DC grounding protection device should be installed in each substation: when the DC grounding protection device detects a fault and causes the feeder cabinet to trip, the existing methods often cannot restore the power supply quickly. The invention affects the normal operation of the magnetic levitation line. The invention solves the technical problem of fault identification and power restoration in the power supply system by designing a DC grounding protection to start the power supply after the trip. When the DC grounding protection detects the fault, the power supply can be quickly restored. .
由于直流接地保护发生时，无法区分上下行，需同时跳开上下行的所有馈线，因此，本发明中恢复供电的方法是在直流接地保护跳闸后，磁悬浮线路快速恢复供电时，在上、下行馈线均跳闸后，按照上、下行先后启动重合闸，使没有故障的上行线路或者下行线路率先恢复供电。When the DC grounding protection occurs, it is impossible to distinguish between the uplink and the downlink, and all the feeders of the uplink and the downlink need to be jumped at the same time. Therefore, the method for restoring the power supply in the present invention is that after the DC grounding protection trips, when the magnetic levitation circuit is quickly restored, the uplink and the downlink are After the feeders are all tripped, the reclosing is started according to the uplink and the downlink, so that the uplink or downlink without faults is the first to restore power.
图1是本发明的供电系统结构示意图；1 is a schematic structural view of a power supply system of the present invention;
图2是本发明中直流接地保护启动跳闸后恢复供电的方法的流程示意图。2 is a schematic flow chart of a method for restoring power supply after a DC grounding protection starts to trip in the present invention.
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。此外，下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Further, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
本发明中的直流接地保护启动跳闸后恢复供电的方法适用的供电系统包括两条上行触网线、两条下行触网线和若干个馈线柜，任意一个馈线柜与这两条上行触网线或这两条下行触网线连接；直流接地保护装置与供电系统相连，用于检测供电系统故障；馈线柜均与直流接地保护装置相连，当直流接地保护装置检测到故障时，馈线柜均跳闸。The method for applying the DC grounding protection to resume power supply after tripping in the present invention includes two uplink antenna lines, two downlink antenna lines, and a plurality of feeder cabinets, any one of the feeder cabinets and the two uplink antenna lines or both. The downlink grounding cable is connected; the DC grounding protection device is connected to the power supply system for detecting the fault of the power supply system; the feeder cabinets are all connected with the DC grounding protection device, and when the DC grounding protection device detects the fault, the feeder cabinets are all tripped.
实施例1Example 1
本实施例的工况为：任意1个馈线柜运行时，直流接地保护装置检测到发生故障。The working condition of this embodiment is: when any one feeder cabinet is in operation, the DC grounding protection device detects a failure.
响应处理包括以下步骤：The response process includes the following steps:
(1)馈线柜立即跳闸，然后进行测试合闸；(1) The feeder cabinet is immediately tripped and then tested for closing;
(2)如果测试合闸成功，且不再接收到直流保护跳闸信号，则正常运行；(2) If the test is successfully closed and the DC protection trip signal is no longer received, it will run normally;
(3)如果测试合闸后，马上接收到直流接地保护跳闸信号，则该馈线柜跳闸并闭锁。(3) If the DC grounding protection trip signal is received immediately after the test is closed, the feeder cabinet trips and locks.
实施例2Example 2
本实施例的工况为：任意2个馈线柜(分别命名为A，B)运行时，直流接地保护装置检测到发生故障。The working condition of this embodiment is: when any two feeder cabinets (named A, B respectively) are in operation, the DC grounding protection device detects a fault.
响应处理分为以下两种情况：Response processing is divided into the following two cases:
情况一：如果A、B同时在上行或者下行，当第一次接收到直流接地保护跳闸信号后，全部跳闸，同时一起进行测试合闸，如果合闸后再次接受到直流接地保护跳闸信号，则跳闸并闭锁；
Case 1: If A and B are both upstream or downstream, when the DC grounding protection trip signal is received for the first time, all trips are performed, and the test is closed together. If the DC ground protection trip signal is received again after closing, Trip and lock;
情况二：如果A、B不同时在上行或者下行，则按照以下步骤进行处理：Case 2: If A and B are not in the uplink or downlink at the same time, follow the steps below:
(1)A、B馈线柜全部跳闸，然后给馈线柜A发出测试合闸信号；(1) All A and B feeder cabinets are tripped, and then a test closing signal is sent to the feeder cabinet A;
(2)如果A馈线柜测试合闸成功后，没有再接收到直流接地保护跳闸信号，则认为该线路无故障，不再给B馈线柜发出测试合闸信号；(2) If the A feeder cabinet test is successfully closed and no DC ground protection trip signal is received, the line is considered to be fault-free and the test switch signal is no longer issued to the B feeder cabinet;
(3)如果A馈线柜测试合闸后，再次接受到直流接地保护跳闸信号，则闭锁A馈线柜，同时给B馈线柜发出测试合闸命令；(3) If the A feeder cabinet test is closed and the DC ground protection trip signal is received again, the A feeder cabinet is blocked and a test closing command is issued to the B feeder cabinet;
(4)如果B馈线柜测试合闸成功后，没有再接收到直流接地保护跳闸信号，则认为B馈线柜对应线路无故障；(4) If the DC feeder protection trip signal is not received after the B feeder cabinet test is successfully closed, it is considered that the corresponding line of the B feeder cabinet is not faulty;
(5)如果B馈线柜测试合闸后再次接收到直流接地保护跳闸信号，立即跳闸B馈线柜并闭锁。(5) If the B feeder feeder test receives the DC ground protection trip signal again after closing, immediately trip the B feeder cabinet and lock it.
实施例3Example 3
本实施例的工况为：任意3个馈线柜(分别命名为A，B，C)运行时，直流接地保护装置检测到发生故障。The working condition of this embodiment is: when any three feeder cabinets (named A, B, C respectively) are running, the DC grounding protection device detects a fault.
响应处理分为以下两种情况：Response processing is divided into the following two cases:
情况一：两台上行馈线柜(分别命名为A、B)，一台下行馈线柜(命名为C)，按照以下步骤进行处理：Case 1: Two uplink feeder cabinets (named A and B respectively) and one downlink feeder cabinet (named C) are processed according to the following steps:
(1)3个馈线柜正常运行，发生直流接地保护故障，三台馈线柜立即跳闸，然后向上行发出测试合闸信号，上行两台馈线柜A、B测试合闸，如果A、B合闸后没有再接收到直流接地保护跳闸信号，则认为上行无故障，不再向下行发出测试合闸命令；(1) Three feeder cabinets are in normal operation, DC grounding protection fault occurs, three feeder cabinets immediately trip, and then the test closing signal is sent upwards, and the two feeder cabinets A and B are tested for closing, if A and B are closed After receiving the DC grounding protection trip signal again, it is considered that there is no fault in the uplink, and no test closing command is issued to the downlink;
(2)如果上行测试合闸后，再次接收到直流接地保护跳闸信号，则立即跳闸A、B馈线柜，同时向下行C馈线柜发出测试合闸命令，(2) If the DC grounding protection trip signal is received again after the uplink test is closed, the A and B feeder cabinets are immediately tripped, and a test closing command is issued to the downstream C feeder cabinet.
(3)如果C馈线柜合闸后不再接受到直流接地保护跳闸信号，则认为下行无故障；(3) If the DC feeder protection trip signal is no longer accepted after the C feeder cabinet is closed, it is considered that there is no fault in the downlink;
(4)如果C馈线柜合闸后，又接受到直流接地保护跳闸信号，则立即跳闸C馈线柜并闭锁，上下行都存在故障；
(4) If the C feeder cabinet is closed and receives the DC grounding protection trip signal, it will immediately trip the C feeder cabinet and be blocked, and there will be faults in both the uplink and the downlink;
情况二：一台上行馈线柜(命名为A)，两台下行馈线柜(命名为B、C)，则按照以下步骤进行处理：Case 2: One upstream feeder cabinet (named A) and two downstream feeder cabinets (named B, C) are processed according to the following steps:
(1)3个馈线柜正常运行，发生直流接地保护故障，三台馈线柜立即跳闸，然后向上行馈线柜A发出测试合闸信号，A馈线柜测试合闸，如果A合闸后没有再接收到直流接地保护跳闸信号，则认为上行无故障，不再向下行馈线柜B、C发出测试合闸命令；(1) Three feeder cabinets are in normal operation, DC grounding protection fault occurs, three feeder cabinets immediately trip, and then the test switch signal is sent to the feeder A, and the A feeder cabinet test is closed. If A is not received after closing When the DC grounding protection trip signal is reached, it is considered that there is no fault in the uplink, and the test closing command is no longer issued to the downstream feeder cabinets B and C;
(2)如果上行馈线柜A测试合闸后，再次接收到直流接地保护跳闸信号，则立即跳闸上行馈线柜A，同时向下行馈线柜B、C发出测试合闸命令，(2) If the DC feeder protection trip signal is received again after the upstream feeder cabinet A test is closed, the upstream feeder cabinet A is immediately tripped, and the test closing command is issued to the downstream feeder cabinets B and C.
(3)如果下行馈线柜B、C合闸后不再接受到直流接地保护跳闸信号，则认为下行无故障；(3) If the DC feeder protection trip signal is no longer received after the downstream feeder cabinets B and C are closed, it is considered that there is no fault in the downlink;
(4)如果下行馈线柜B、C合闸后，又接受到直流接地保护跳闸信号，则立即跳闸馈线柜B、C并闭锁，上下行都存在故障。(4) If the DC feeder protection switches are received after the downstream feeder cabinets B and C are closed, the feeder cabinets B and C are immediately tripped and locked, and there are faults in both the uplink and the downlink.
实施例4Example 4
本实施例的工况为：4个馈线柜全部运行时，直流接地保护装置检测到发生故障。The working condition of this embodiment is: when all four feeder cabinets are in operation, the DC grounding protection device detects a failure.
响应处理包括以下步骤：The response process includes the following steps:
(1)当发生直流接地保护故障，所有馈线柜立即跳闸，然后向上行馈线柜发出测试合闸命令，如果上行测试合闸后，不再接收到直流接地保护跳闸信号，则认为上行无故障，不再向下行发出测试合闸命令；(1) When a DC grounding protection fault occurs, all feeder cabinets immediately trip, and then send a test closing command to the upstream feeder cabinet. If the DC grounding protection trip signal is no longer received after the upstream test is closed, the uplink is considered to be faultless. No further test closing command is issued to the downstream;
(2)如果上行测试合闸后，立即又接收到直流接地保护跳闸信号，则上行馈线柜跳闸闭锁，同时向下行发出测试合闸命令；(2) If the DC grounding protection trip signal is received immediately after the uplink test is closed, the uplink feeder cabinet trips and blocks, and the test closing command is issued to the downlink;
(3)如果下行测试合闸后，不再接收到直流接地保护跳闸信号，则认为下行无故障；(3) If the DC grounding protection trip signal is no longer received after the downlink test is closed, it is considered that there is no fault in the downlink;
(4)如果下行测试合闸后，立即接收到直流接地保护跳闸信号，立即跳闸下行馈线柜并闭锁。(4) If the DC grounding protection trip signal is received immediately after the downlink test is closed, immediately trip the lower feeder cabinet and lock it.
上述实施例中的合闸处理即使断电的馈线柜通电。
The closing process in the above embodiment is energized even if the power-off feeder cabinet is powered off.
本发明中的直流接地保护启动跳闸后恢复供电的方法，尤其适用于磁悬浮系统(如中低速磁悬浮系统)，当直流牵引系统中的直流接地保护启动跳闸后，能够高效的识别故障，并快速恢复供电。The method for recovering power supply after the DC grounding protection starts to trip after the invention is particularly suitable for a magnetic levitation system (such as a medium-low speed magnetic levitation system), and can effectively identify the fault and quickly recover after the DC grounding protection in the DC traction system starts to trip. powered by.
本领域的技术人员容易理解，以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
Those skilled in the art will appreciate that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention, All should be included in the scope of protection of the present invention.
Claims (3)
- 一种直流接地保护启动跳闸后恢复供电的方法，其特征在于，优选包括以下步骤：A method for restoring power supply after a DC grounding protection starts tripping, characterized in that it preferably comprises the following steps:(1)检测故障：直流接地保护装置与供电系统相连，用于检测供电系统故障；该供电系统包括两条上行触网线、两条下行触网线和若干个馈线柜，任意一个所述馈线柜与所述两条上行触网线或所述两条下行触网线连接；所述馈线柜均与所述直流接地保护装置相连，当所述直流接地保护装置检测到故障时，所述馈线柜均跳闸；(1) Detection failure: The DC grounding protection device is connected to the power supply system for detecting the failure of the power supply system; the power supply system includes two uplink antenna lines, two downlink antenna lines, and a plurality of feeder cabinets, and any one of the feeder cabinets The two uplink antenna lines or the two downlink antenna lines are connected; the feeder cabinets are all connected to the DC ground protection device, and when the DC ground protection device detects a fault, the feeder cabinets are all tripped;(2)响应处理：(2) Response processing:当所述馈线柜均同时与所述两条上行触网线相连或者同时与所述两条下行触网线相连时，对所述馈线柜同时测试合闸，将所述馈线柜通电，其中当所述直流接地保护装置不再检测到故障信号时，则对所述馈线柜恢复供电；当所述直流接地保护装置仍然检测到故障信号时，则对所述馈线柜断电并闭锁；When the feeder cabinets are simultaneously connected to the two uplink antenna lines or simultaneously connected to the two downlink antenna lines, the feeder cabinet is simultaneously tested for closing, and the feeder cabinet is powered, wherein When the DC grounding protection device no longer detects the fault signal, the power supply is restored to the feeder cabinet; when the DC grounding protection device still detects the fault signal, the feeder cabinet is powered off and blocked;当部分所述馈线柜与所述两条上行触网线相连、且部分所述馈线柜与所述两条下行触网线相连时，对与所述两条上行触网线相连的馈线柜测试合闸，将这部分馈线柜通电，当所述直流接地保护装置不再检测到故障信号时，则上行触网排除故障，将与所述两条下行触网线相连的馈线柜闭锁；当所述直流接地保护装置仍然检测到故障信号时，则将与所述两条上行触网线相连的馈线柜闭锁，然后再对与所述两条下行触网线相连的馈线柜测试合闸，将这部分与所述两条下行触网线相连的馈线柜通电，当所述直流接地保护装置不再检测到故障信号时，则对与所述两条下行触网线相连的馈线柜恢复供电，否则对与所述两条下行触网线相连的馈线柜断电并闭锁。When a part of the feeder cabinet is connected to the two uplink antenna lines, and some of the feeder cabinets are connected to the two downlink antenna lines, the feeder cabinet connected to the two uplink antenna lines is tested and closed. The part of the feeder cabinet is energized. When the DC grounding protection device no longer detects the fault signal, the uplink antenna is faulty, and the feeder cabinet connected to the two downlink antenna lines is blocked; when the DC grounding protection is performed When the device still detects the fault signal, the feeder cabinet connected to the two uplink antenna lines is blocked, and then the feeder cabinet connected to the two downlink antenna lines is tested and closed, and the part is combined with the two The feeder cabinet connected to the downlink network cable is energized, and when the DC ground protection device no longer detects the fault signal, the power supply cabinet connected to the two downlink antenna cables is restored, otherwise the two downlinks are The feeder cabinet connected to the touch cable is powered off and blocked.
- 如权利要求1所述直流接地保护启动跳闸后恢复供电的方法，其特征在于，所述两条上行触网线分别为磁悬浮上行授流轨和磁悬浮上行回流轨。 The method for restoring power supply after the DC grounding protection starts to trip according to claim 1, wherein the two uplink antenna lines are respectively a magnetic levitation uplink rail and a magnetic levitation uplink return rail.
- 如权利要求1所述直流接地保护启动跳闸后恢复供电的方法，其特征在于，所述两条下行触网线分别为磁悬浮下行授流轨和磁悬浮下行回流轨。 The method for restoring power supply after the DC grounding protection starts to trip according to claim 1, wherein the two downlink antenna lines are respectively a magnetic levitation downward flow rail and a magnetic levitation downlink return rail.
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| CN107046279B (en) * | 2017-04-28 | 2020-02-21 | 北京交通大学长三角研究院 | Grounding protection device and method for urban rail transit bidirectional traction substation |
| CN109228871B (en) * | 2017-07-10 | 2020-08-07 | 比亚迪股份有限公司 | Train power supply system, leakage detection and recovery device and method thereof, and train |
| CN109435784B (en) * | 2018-10-23 | 2021-07-23 | 中国铁路总公司 | Ground neutral-section passing fault processing method and system |
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