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WO2021109833A1 - 一种便携式自动检相序装置 - Google Patents

一种便携式自动检相序装置 Download PDF

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Publication number
WO2021109833A1
WO2021109833A1 PCT/CN2020/128529 CN2020128529W WO2021109833A1 WO 2021109833 A1 WO2021109833 A1 WO 2021109833A1 CN 2020128529 W CN2020128529 W CN 2020128529W WO 2021109833 A1 WO2021109833 A1 WO 2021109833A1
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Prior art keywords
phase
phase sequence
circuit breaker
interface
output
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PCT/CN2020/128529
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English (en)
French (fr)
Inventor
胡德敏
陈允柯
袁玉柱
邓浩杰
宋树军
王滕
李培启
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徐州海伦哲特种车辆有限公司
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Publication of WO2021109833A1 publication Critical patent/WO2021109833A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/18—Indicating phase sequence; Indicating synchronism

Definitions

  • the invention relates to a power device, in particular to a portable automatic phase sequence detection device.
  • emergency equipment generally uses its own cable to directly connect to the low-voltage power grid interface for power supply. Since the phase sequence detection is not performed before power supply, the output power phase sequence is often inconsistent with the user power grid power phase sequence, resulting in user three-phase equipment (such as Elevators, lathes, etc.) cannot be used or work in reverse, which may even cause accidents and endanger personal safety.
  • phase sequence detection In order to avoid the inconsistency of the phase sequence when the emergency equipment is powered, the phase sequence must be checked before the power is supplied.
  • phase sequence detection There are two existing methods for phase sequence detection: one is to use a phase sequence table for manual detection, and the other is to configure an automatic phase verification device for emergency equipment.
  • the first method It can be carried out by using a phase sequence table.
  • the advantage is that the investment is less and the applicability is strong.
  • this method requires the operator to hold the phase sequence table in contact with the 400V power supply, and the personal safety of the operator cannot be obtained. Guarantee, and the operation steps are cumbersome and the reliability is not high. Once the manual judgment is wrong, the consequences will be serious.
  • the second method generally install an automatic phase verification device inside the vehicle, and the automatic phase verification is generally realized by installing a simple generalized electric bridge or directly installing a phase verification instrument.
  • Chinese patent CN204330898U discloses a low-voltage nuclear phase system of a bypass mobile box-change emergency repair vehicle. The technical description adopts the principle of current balance and carries a generalized bridge to realize a low-voltage nuclear phase system. The system adjusts the adjustable resistance on site. Observe the current value to determine the phase situation.
  • the mobile box-transformation vehicle with automatic phase verification system disclosed in Chinese patent CN201937193U, the mobile box-transformation vehicle directly connects the low-voltage power supply and the power supply of the distribution transformer to the phase meter, and the phase meter judges the phase.
  • phase verification and automatic switching of the mobile box-transformation vehicle are realized, and the on-site manual phase verification and switching operations are avoided.
  • the phase meter can only detect the phase angle, that is to say, the phase verification method can only be used to determine whether the three-phase power phases of the same group of transformers in the same line are the same.
  • the phase sequence of the phase power supply cannot be judged, and it is also not applicable to the phase sequence detection of emergency equipment and low-voltage power grids.
  • the low-voltage power grid has a variety of interfaces, such as low-voltage switchgear busbars, overhead lines, and various types of quick connectors.
  • emergency equipment is generally equipped with only one type of interface cable, which can only meet the interface requirements of a small number of low-voltage power grids.
  • the existing solution is to carry out on-site restructuring of the emergency equipment's own cables, which not only takes time and effort, but also causes damage and waste to the own cables. If multiple cable interfaces are configured, a large number of cables need to be configured, resulting in repeated purchases of cables and wasting a lot of economic resources.
  • the above problems have severely restricted the development of emergency equipment, and at the same time, they have also had a huge impact on the improvement of electricity reliability.
  • the present invention discloses a portable automatic phase sequence detection device.
  • the device first uses a power control relay to detect the phase sequence category of the three-phase power supply of different lines or different groups of transformers, and then uses the power control relay to connect in reverse phase. Comparing the above phase sequence categories can reliably detect whether the phase sequence of any low-voltage power supply is the same. It not only solves the problems of limited use range and low reliability of the automatic phase nuclear device in the prior art, but also solves the problems of low safety and cumbersome operation of manual phase sequence detection, and provides a guarantee for the safe and fast power supply of emergency equipment.
  • a portable automatic phase sequence detection device which includes a box, a circuit breaker, a cable interface, an opening and closing switch, and an automatic phase sequence detection system.
  • the automatic phase sequence detection system includes a phase sequence detection switch, The first relay, the same phase sequence indicator, the different phase sequence indicator, and two groups of power control relays; each group of two power control relays, respectively connected to the input and output of the circuit breaker, two groups of power control relays and circuit breaker
  • the connection phase sequence of the input end and the output end of the relay is opposite; a group of normally open contacts of the same group of two power control relays are connected in series, and two groups of power control relays are connected in series and connected in parallel.
  • the first relay includes two groups of normally open contacts and a group of normally closed contacts, one group of normally open contacts is connected to an indicator lamp with the same phase sequence, and the other group is connected to
  • the opening and closing switches are connected in series, and a group of normally closed contacts is connected to the indicator lamps with different phase sequence.
  • the two groups and four power control relays are respectively a first power control relay, a second power control relay, a third power control relay, and a fourth power control relay;
  • the power A phase, B phase, and B phases of the first power control relay are Phase C is connected to phase A, phase B, and phase C of the circuit breaker input terminal, and phase A, phase B, and phase C of the power supply of the second power control relay are connected to phase C, phase B, and phase A of the circuit breaker input terminal, and the third power source
  • the power supply A phase, B phase, C phase of the control relay is connected with the circuit breaker output terminal A phase, B phase, C phase, and the power supply A phase, B phase, C phase of the fourth power control relay is connected with the circuit breaker output terminal C phase, Phase B and Phase A are connected.
  • the circuit breaker includes a circuit breaker body, a circuit breaker closing mechanism, and a circuit breaker opening mechanism, and the opening and closing switches are respectively connected to the circuit breaker closing mechanism and the circuit breaker opening mechanism.
  • the cable interface is installed on both sides of the box and includes an input cable interface and an output cable interface.
  • the input cable interface includes an input N-phase interface and an input A connected to the A-phase, B-phase, and C-phase terminals of the input terminal of the circuit breaker, respectively.
  • Phase interface, input phase B interface, input phase C interface; the output cable interface includes output N phase interface and output phase A interface and output phase B interface which are respectively connected to the A phase, B phase and C phase terminals of the output terminals of the circuit breaker , Output C-phase interface, the input N-phase interface is connected with the output N-phase interface.
  • the input cable interface is a quick connector or a copper bar
  • the output cable interface is a quick connector
  • the cable interface and the circuit breaker are connected by a cable or a copper bar.
  • the output cable interface is connected with a transition cable, one end of the transition cable is a quick connector connected to the output cable interface, and the other end is equipped with a variety of interface forms that can be matched with various interfaces of the low-voltage power distribution network .
  • the interface configured at one end of the transition cable connected to the low-voltage power distribution network is in the form of a copper terminal, a quick connector, or a drain clamp.
  • the device further includes a voltage and current display device, the voltage and current display device includes a current signal detection device installed on the cable or copper bar connected to the cable interface and the circuit breaker, and used to display voltage, current, power, and frequency. Power multi-function meter.
  • the device further includes a quasi-synchronization controller for comparing voltage amplitude and phase angle.
  • the device further includes a power detection port, the power detection port includes an input power detection port and an output power detection port, the input power detection port is connected to the input end of the circuit breaker, and the output power detection port is connected to the circuit breaker output end Connected, the electrical inspection port is provided with insulation protection and an electric shock prevention structure.
  • the box body includes a box body, a handle, a door lock with a fingerprint recognition function, and a universal wheel, and the box body has a double-layer door structure.
  • the advantages of the portable automatic phase sequence detection device disclosed in the present invention are:
  • the present invention first uses the power control relay to detect the phase sequence category of the three-phase power supply of different lines or different groups of transformers, and then compares the above phase sequence categories through the power control relay reverse connection method, which can reliably detect Whether the phase sequence of any low-voltage power supply is the same. It not only solves the problem that the automatic phase verification device in the prior art can only detect whether the three-phase power phases and reliability of the same group of transformers in the same line are the same, but also solves the problems of low safety and cumbersome operation of manual phase sequence detection It provides a guarantee for the safe and fast power supply of emergency equipment.
  • the present invention is equipped with a cable interface and a transfer cable.
  • the emergency equipment can be easily and quickly connected to the low-voltage power grid by using its own cable, which solves the problems of on-site restructuring of emergency equipment cables and repeated purchases of cables, saving a lot of manpower, Material resources.
  • the three-phase power supply controller in the automatic phase sequence detection system of the present invention has the functions of phase loss protection and undervoltage protection. Only when the input and output two power supplies are completely normal and the phase sequence is consistent, the phase sequence consistent signal can be output. It not only ensures the accuracy of the phase sequence detection results, but also ensures the reliability of the emergency equipment power supply.
  • Fig. 1 is a structural schematic diagram 1 of a portable automatic phase sequence detection device disclosed in the present invention.
  • Fig. 2 is a schematic structural diagram 2 of a portable automatic phase sequence detection device disclosed in the present invention.
  • Fig. 3 is a schematic circuit diagram of a portable automatic phase sequence detection device disclosed in the present invention.
  • Fig. 4 is a logical block diagram of a portable automatic phase sequence detection device disclosed in the present invention.
  • Figures 1 to 4 show preferred embodiments of the present invention, which are analyzed in detail from different angles.
  • a portable automatic phase sequence detection device as shown in Figures 1 and 2 includes a box body 1, a circuit breaker 2, a cable interface 4, an opening and closing switch 5, and an automatic phase sequence detection system 3.
  • the box 1 includes a box body 102, a handle 104, a door lock 103 with fingerprint recognition function, and a universal wheel 101.
  • the box body 102 has a double-layer door structure, which effectively isolates the automatic phase sequence detection and synchronization cable transfer box
  • the electrified part avoids the problem that the operator accidentally touches the electrified body and causes the operator to get an electric shock, and ensures the safety of the operator when the emergency equipment is connected to the user.
  • the universal wheel 101 and the handle 104 are installed at the bottom of the box body 1 and the volume is small, it is easy to access and move, which can meet the space requirements of various working conditions.
  • the circuit breaker 2 is installed in the box 1 and includes the circuit breaker body 201, the circuit breaker closing mechanism 202, and the circuit breaker opening mechanism 203.
  • the opening and closing switch 5 is respectively connected with the circuit breaker closing mechanism 202 and the circuit breaker opening mechanism 203. connection.
  • the cable interface 4 is installed on both sides of the box 1, with insulation protection, including an input cable interface and an output cable interface.
  • the input cable interface includes an input N-phase interface 404 and the A-phase, B-phase, and C-phase terminals of the input terminal of the circuit breaker 2 respectively.
  • the input phase A interface 401, the input phase B interface 402, and the input phase C interface 403 are connected.
  • the output cable interface includes an output N-phase interface 408 and an output A-phase interface 405, an output B-phase interface 406, an output C-phase interface 407, and an input N-phase interface respectively connected to the A-phase, B-phase, and C-phase terminals of the output terminals of the circuit breaker 2 404 is connected to the output N-phase interface 408.
  • the input cable interface is a quick connector or copper bar
  • the output cable interface is a quick connector.
  • the cable interface 4 and the circuit breaker 2 are connected by cables or copper bars.
  • the output cable interface is connected with a transfer cable 8.
  • One end of the transfer cable 8 is a quick connector connected to the output cable interface, and the other end is equipped with a variety of interface forms that can be matched with various interfaces of the low-voltage power distribution network.
  • the specific interface form is Copper terminals or quick connectors or drain clamps.
  • the automatic phase sequence detection system 3 includes a phase sequence switch 306, a first power control relay 302, a second power control relay 303, a third power control relay 304, a fourth power control relay 305, and a first relay. 301.
  • the power A phase, B phase, and C phase of the first power control relay 302 are respectively connected to the A phase, B phase, and C phase of the input terminal of the circuit breaker 2; the power A phase, B phase, and C phase of the second power control relay 303 are respectively connected It is connected to the input terminals of circuit breaker 2 with phase C, phase B, and phase A; the power source A phase, phase B, and phase C of the third power supply control relay 304 are connected with phase A, phase B, and phase C of the output terminal of circuit breaker 2 respectively;
  • the power A phase, B phase, and C phase of the four power source control relay 305 are respectively connected to the C phase, B phase, and A phase of the output terminal of the circuit breaker 2.
  • a group of normally open contacts of the first power control relay 302 is connected in series with a group of normally open contacts of the third power control relay 304, and a group of normally open contacts of the second power control relay 303 is connected in series with the fourth power control relay 304.
  • a group of normally open contacts are connected in series, and the two groups of power control relays are connected in series and then connected in parallel as a whole.
  • the coil of the first relay 301 is connected to the other end of the normally open contact of the third power control relay 304 and the normally open contact of the fourth power control relay 305 respectively. Connect the other end of the opening.
  • the first relay 301 includes two groups of normally open contacts and a group of normally closed contacts. One group of normally open contacts is connected with the same phase sequence indicator 307, the other group is connected in series with the opening and closing switch 5, and a group of normally closed contacts is connected in series. The point is connected to the indicator light 308 with a different phase sequence.
  • the device also includes a voltage and current display device 6.
  • the voltage and current display device 6 includes a current signal detection device 602 installed on the cable or copper bar connecting the cable interface 4 and the circuit breaker 2 and used to display voltage, current, and power. 601, frequency power multi-function meter.
  • the device also includes a quasi-synchronous controller 309 for comparing voltage amplitude and phase angle, which provides conditions for parallel operation of mobile box-transformation vehicles and low-voltage cable cars with users, and greatly improves power supply reliability.
  • the device also includes an electrical inspection port 7.
  • the electrical inspection port 7 includes an input electrical inspection port and an output electrical inspection port, the input electrical inspection port is connected to the input end of the circuit breaker 2, and the output electrical inspection port is connected to the output end of the circuit breaker 2.
  • the electrical inspection port 7 is equipped with insulation protection and electric shock prevention structure.
  • using the above-mentioned portable automatic phase sequence detection device to perform operations includes the following steps:
  • the first power control relay 302 and the third power control relay 304 act, and the corresponding normally open contacts are closed.
  • the phase sequence is the same, and the first relay 301
  • the indicator light 307 works, and the circuit breaker 2 is allowed to close. Operate the opening and closing switch 5, the circuit breaker closing mechanism 202 is energized, the circuit breaker 2 is closed, and the emergency equipment power is transmitted to the low-voltage power distribution network;
  • the first power control relay 302 and the fourth power control relay 305 will act, and the corresponding normally open contacts will be closed.
  • the phase sequence is different, the first relay 301 does not work, the phase sequence is different, the indicator light 308 works, and the circuit breaker 2 is prohibited from closing.
  • swap any two phases at one end of the connecting cable 8 and the output cable interface and perform automatic phase sequence detection again;
  • the second power control relay 303 and the third power control relay 304 act, and the corresponding normally open contacts are closed.
  • the phase sequence is different, and the first relay 301 does not work, the phase sequence is different, the indicator light 308 works, and the circuit breaker 2 is prohibited from closing.
  • swap any two phases at one end of the connecting cable 8 and the output cable interface and perform automatic phase sequence detection again;
  • the second power control relay 303 and the fourth power control relay 305 will act, and the corresponding normally open contacts will be closed.
  • the phase sequence is the same, and the first relay 301 will be energized.
  • the phase sequence is the same, the indicator light 307 works, and the circuit breaker 2 is allowed to close.
  • the opening and closing switch 5 By operating the opening and closing switch 5, the circuit breaker closing mechanism 202 is energized, the circuit breaker 2 is closed, and the emergency equipment power supply is transmitted to the low-voltage power distribution network.
  • the portable automatic phase sequence detection device disclosed in the present invention first uses a power control relay to detect the phase sequence category of the three-phase power supply of different lines or different groups of transformers, and then conducts the reverse connection of the power control relay. Comparing the above phase sequence categories can reliably detect whether the phase sequence of any low-voltage power supply is the same. It not only solves the problem that the automatic phase verification device in the prior art can only detect whether the three-phase power phases and reliability of the same group of transformers in the same line are the same, but also solves the problems of low safety and cumbersome operation of manual phase sequence detection It provides a guarantee for the safe and fast power supply of emergency equipment.
  • the phase sequence detection device is also equipped with a cable interface and a transfer cable. The emergency equipment can be easily and quickly connected to the low-voltage power grid by using its own cable, which solves the problems of the emergency equipment cable site modification and the repeated purchase of cables, saving a lot of money Human and material resources.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

一种便携式自动检相序装置，涉及电力装置技术领域。检相序装置中自动检相序系统（3）包括检相序开关（306）、第一电源控制继电器（302）、第二电源控制继电器（303）、第三电源控制继电器（304）、第四电源控制继电器（305）、第一继电器（301）、相序相同指示灯（307）以及相序不同指示灯（308）。检相序装置首先采用电源控制继电器（302、303、304、305）检测不同线路或者不同组别变压器的三相电源的相序类别，再通过电源控制继电器（302、303、304、305）反相连接方式对以上相序类别进行比对，能够可靠地检测出任意低压电源的相序是否相同；不但解决了现有技术中自动核相装置使用范围局限、可靠性低的问题，同时也解决了人工检测相序安全性低、操作繁琐的问题，为应急装备安全、快速地供电提供了保障。

Description

一种便携式自动检相序装置 技术领域
本发明涉及一种电力装置，具体涉及一种便携式自动检相序装置。
背景技术
随着经济的发展，人们对于用电可靠性的要求越来越高，为保证用户不停电，应急保电、送电，临时取电、供电的工况越来越普遍。通过使用应急装备供电或取电来保障用户用电需求已经成为常态，常见的应急装备有发电车、UPS电源车、移动箱变车、低压电缆车等。
目前，应急装备一般采用自带电缆直接接入低压电网接口进行供电，由于供电前不进行相序检测，经常出现输出电源相序与用户电网电源相序不一致的情况，造成用户三相设备(例如电梯、车床等)无法使用或者反向工作的情况，甚至可能造成事故发生，危害人身安全。
为了避免应急装备供电时相序不一致的情况发生，在供电前必须进行检相序。现有检相序的方式有两种：一种是采用相序表进行手动检测，另一种是应急装备配置自动核相装置。
第一种方式：采用一块相序表即可进行，优点是投入资金较少，适用性较强，但这种方式需要操作人员手持相序表与400V电源进行接触，操作人员人身安全得不到保证，而且操作步骤繁琐，可靠性不高，人工判断一旦失误，带来的后果严重。
第二种方式：一般在车辆内部安装自动核相装置，自动核相一般采用搭载简单的广义电桥实现或是直接安装核相仪实现。如中国专利CN204330898U所公开的一种旁路移动箱变抢修车低压核相系统，其技术描述中采用电流平衡原理 搭载广义电桥实现了一种低压核相系统，该系统通过现场调节可调电阻观察电流值来判断相位情况，可以用于检测同一线路中相同组别变压器的三相电源相位是否相同，但无法检测不同线路或不同组别变压器的三相电源相序是否一致，使用局限性较大，对于应急装备与低压电网的相序检测并不适用。而且操作复杂，结果可靠性不高。另外，中国专利CN201937193U所公开的带有自动核相系统的移动箱变车中，该移动箱变车是将的低压电源和配电变压器的电源直接接入相位仪，相位仪对相位进行判断，实现了移动箱变车自动核相与自动切换，避免了现场人工核相操作与切换操作。但是由于相位仪仅能对相位角进行检测，也就是说，该核相方式仅能用于判断同一线路中相同组别变压器的三相电源相位是否相同，对于不同线路或不同组别变压器的三相电源相序无法进行判断，对于应急装备与低压电网的相序检测同样不适用。
除此之外，低压电网的接口形式繁多，常见的有低压开关柜母排、架空线路和各种不同类型快速连接器等。但是应急装备一般只配置一种接口形式的电缆，仅能满足少数低压电网的接口需求，由此造成应急设备无法接入的情况时常发生。针对这种情况，现有的解决方案为对应急设备自带电缆进行现场改制，不但费时费力，而且还会对自带电缆造成破坏、浪费。若配置多种电缆接口，则需要配置大量电缆，造成电缆的重复购置，浪费大量经济资源。以上问题，严重制约了应急装备的发展，同时，对于用电可靠性的提高也产生了巨大影响。
因此，目前尚无公知技术解决应急装备自动检相序以及快速接入低压配电网的难题。
发明内容
针对以上问题，本发明公开了一种便携式自动检相序装置，该装置首先采 用电源控制继电器检测不同线路或者不同组别变压器的三相电源的相序类别，再通过电源控制继电器反相连接方式对以上相序类别进行比对，能够可靠地检测出任意低压电源的相序是否相同。不但解决了现有技术中自动核相装置使用范围局限、可靠性低的问题，同时也解决了人工检测相序安全性低、操作繁琐的问题，为应急装备安全、快速地供电提供了保障。
根据本发明的目的提出的一种便携式自动检相序装置，包括箱体、断路器、电缆接口、分合闸开关以及自动检相序系统，所述自动检相序系统包括检相序开关、第一继电器、相序相同指示灯、相序不同指示灯以及两组电源控制继电器；所述电源控制继电器每组两个，分别连接于断路器输入端和输出端，两组电源控制继电器与断路器输入端和输出端连接相序相反；同组两个电源控制继电器的一组常开触点串联，两组电源控制继电器串联后并联，所述第一继电器的线圈分别与两组串联后电源控制继电器的常开触点的另一端连接；所述第一继电器包括两组常开触点和一组常闭触点，一组常开触点与相序相同指示灯连接，另一组与分合闸开关串联，一组常闭触点与相序不同指示灯连接。
优选的，两组、四个电源控制继电器分别为第一电源控制继电器、第二电源控制继电器、第三电源控制继电器以及第四电源控制继电器；第一电源控制继电器的电源A相、B相、C相与断路器输入端A相、B相、C相连接，第二电源控制继电器的电源A相、B相、C相与断路器输入端C相、B相、A相连接，第三电源控制继电器的电源A相、B相、C相与断路器输出端A相、B相、C相连接，第四电源控制继电器的电源A相、B相、C相与断路器输出端C相、B相、A相连接。
优选的，所述断路器包括断路器本体、断路器合闸机构、断路器分闸机构， 所述分合闸开关分别与断路器合闸机构及断路器分闸机构连接。所述电缆接口安装于箱体两侧，包括输入电缆接口和输出电缆接口，所述输入电缆接口包括输入N相接口以及分别与断路器输入端A相、B相、C相端子连接的输入A相接口、输入B相接口、输入C相接口；所述输出电缆接口包括输出N相接口以及分别与断路器输出端A相、B相、C相端子连接的输出A相接口、输出B相接口、输出C相接口，所述输入N相接口与输出N相接口连接。
优选的，所述输入电缆接口为快速连接器或铜排，所述输出电缆接口为快速连接器；所述电缆接口与断路器采用电缆或铜排连接。
优选的，所述输出电缆接口连接有转接电缆，所述转接电缆一端为与输出电缆接口连接的快速连接器，另一端配置多种可与低压配电网各种形式接口配套的接口形式。
优选的，所述转接电缆与低压配电网连接的一端配置的接口形式为铜端子或快速连接器或引流线夹。
优选的，所述装置还包括电压电流显示装置，所述电压电流显示装置包括安装于电缆接口与断路器连接的电缆或铜排上的电流信号检测装置以及用于显示电压、电流、功率、频率的电力多功能表。
优选的，所述装置还包括用于比对电压幅值、相位角的准同期控制器。
优选的，所述装置还包括验电口，所述验电口包括输入验电口和输出验电口，所述输入验电口与断路器输入端连接，输出验电口与断路器输出端连接，所述验电口带有绝缘防护以及防触电结构。
优选的，所述箱体包括箱体本体、把手、具备指纹识别功能的门锁以及万向轮，所述箱体本体为双层门结构。
与现有技术相比，本发明公开的一种便携式自动检相序装置的优点是：
(1)本发明首先采用电源控制继电器检测不同线路或者不同组别变压器的三相电源的相序类别，再通过电源控制继电器反相连接方式对以上相序类别进行比对，可以可靠地检测出任意低压电源的相序是否相同。不但解决了现有技术中自动核相装置仅能检测同一线路中相同组别变压器的三相电源相位是否相同以及可靠性的问题，同时也解决了人工检测相序安全性低、操作繁琐的问题，为应急装备安全、快速地供电提供了保障。
(2)本发明设置了电缆接口及转接电缆，应急装备采用自身电缆即可方便、快速地接入低压电网，解决了应急装备电缆现场改制和电缆重复购置电缆造的问题，节约大量人力、物力。
(3)本发明自动检相序系统中三相电源控制器具有缺相保护、欠压保护功能，只有当输入端和输出端两路电源完全正常且相序一致时才能输出相序一致信号，不仅保证了相序检测结果的准确性，同时也保证了应急装备电源的可靠性。
附图说明
为了更清楚的说明本发明实施例或现有技术的技术方案，下面将对实施例或现有技术描述中所需要使用的附图做简单的介绍，显而易见的，下面描述中的附图仅仅是本发明的一些实施例，对于本领域中的普通技术人员来说，在不付出创造性劳动的前提下，还可根据这些附图获得其他附图。
图1为本发明公开的一种便携式自动检相序装置的结构示意图1。
图2为本发明公开的一种便携式自动检相序装置的结构示意图2。
图3为本发明公开的一种便携式自动检相序装置的电路原理图。
图4为本发明公开的一种便携式自动检相序装置的逻辑框图。
图中的数字或字母所代表的零部件名称为：
1-箱体；101-万向轮；102-箱体本体；103-门锁；104-把手；2-断路器；201-断路器本体；202-断路器合闸机构；203-断路器分闸机构；3-自动检相序系统；301-第一继电器；302-第一电源控制继电器；303-第二电源控制继电器；304-第三电源控制继电器；305-第四电源控制继电器；306-检相序开关；307-相序相同指示灯；308-相序不同指示灯；309-准同期控制器；4-电缆接口；401-输入A相接口；402-输入B相接口；403-输入C相接口；404-输入N相接口；405-输出A相接口；406-输出B相接口；407-输出C相接口；408-输出N相接口；5-分合闸开关；6-电压电流显示装置；601-电力多功能表；602-电流信号检测装置；7-验电口；8-转接电缆。
具体实施方式
下面结合附图对本发明的具体实施方式做简要说明。显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部实施例，基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，均属于本发明保护的范围。
图1-图4示出了本发明较佳的实施例，分别从不同的角度对其进行了详细的剖析。
如图1、2所示的一种便携式自动检相序装置，包括箱体1、断路器2、电缆接口4、分合闸开关5以及自动检相序系统3。
箱体1包括箱体本体102、把手104、具备指纹识别功能的门锁103以及万向轮101，箱体本体102为双层门结构，有效的隔绝了自动检相序检同期电缆转 接箱的带电部位，避免了操作人员误碰带电体导致操作人员触电的问题，保证了应急装备接入用户时操作人员的安全。同时，由于箱体1底部安装有万向轮101及把手104且体积小巧，便于存取、挪动，可满足各种工况的空间要求。
断路器2安装在箱体1内，包括断路器本体201、断路器合闸机构202、断路器分闸机构203，分合闸开关5分别与断路器合闸机构202及断路器分闸机构203连接。
电缆接口4安装于箱体1两侧，具有绝缘防护，包括输入电缆接口和输出电缆接口，输入电缆接口包括输入N相接口404以及分别与断路器2输入端A相、B相、C相端子连接的输入A相接口401、输入B相接口402、输入C相接口403。输出电缆接口包括输出N相接口408以及分别与断路器2输出端A相、B相、C相端子连接的输出A相接口405、输出B相接口406、输出C相接口407，输入N相接口404与输出N相接口408连接。具体的，输入电缆接口为快速连接器或铜排，输出电缆接口为快速连接器。电缆接口4与断路器2采用电缆或铜排连接。输出电缆接口连接有转接电缆8，转接电缆8一端为与输出电缆接口连接的快速连接器，另一端配置多种可与低压配电网各种形式接口配套的接口形式，具体接口形式为铜端子或快速连接器或引流线夹。
如图3所示，自动检相序系统3包括检相序开关306、第一电源控制继电器302、第二电源控制继电器303、第三电源控制继电器304、第四电源控制继电器305、第一继电器301、相序相同指示灯307以及相序不同指示灯308。第一电源控制继电器302的电源A相、B相、C相分别与断路器2输入端A相、B相、C相连接；第二电源控制继电器303的电源A相、B相、C相分别与断路器2输入端C相、B相、A相连接；第三电源控制继电器304的电源A相、B相、C相 分别与断路器2输出端A相、B相、C相连接；第四电源控制继电器305的电源A相、B相、C相分别与断路器2输出端C相、B相、A相连接。第一电源控制继电器302的一组常开触点与第三电源控制继电器304的一组常开触点串联，第二电源控制继电器303的一组常开触点与第四电源控制继电器304的一组常开触点串联，两组电源控制继电器串联后整体进行并联，第一继电器301的线圈分别与第三电源控制继电器304的常开触点的另一端和第四电源控制继电器305的常开点的另一端连接。第一继电器301包括两组常开触点和一组常闭触点，一组常开触点与相序相同指示灯307连接，另一组与分合闸开关5串联，一组常闭触点与相序不同指示灯308连接。
进一步的，该装置还包括电压电流显示装置6，电压电流显示装置6包括安装于电缆接口4与断路器2连接的电缆或铜排上的电流信号检测装置602以及用于显示电压、电流、功率、频率的电力多功能表601。
进一步的，该装置还包括用于比对电压幅值、相位角的准同期控制器309，为移动箱变车和低压布缆车与用户并列运行提供了条件，大大地提高了供电可靠性。
进一步的，该装置还包括验电口7，验电口7包括输入验电口和输出验电口，输入验电口与断路器2输入端连接，输出验电口与断路器2输出端连接，验电口7带有绝缘防护以及防触电结构。
如图4所示，使用上述便携式自动检相序装置进行作业，包括以下步骤：
(1)将应急装备自带电缆与便携式自动检相序装置输入电缆接口连接。将转接电缆8一端与便携式自动检相序装置输出电缆接口连接，另一端与低压电网连接。
(2)按下检相序开关306，自动检相序系统3开始工作。
(3)若输入电缆接口和输出电缆接口电源均为正相序，第一电源控制继电器302和第三电源控制继电器304动作，相应常开触点闭合，此时相序相同，第一继电器301得电动作，相序相同指示灯307工作，断路器2允许合闸。操作分合闸开关5，断路器合闸机构202得电动作，断路器2合闸，应急装备电源输送到低压配电网；
若输入电缆接口电源为正相序，输出电缆接口电源为反相序，第一电源控制继电器302和第四电源控制继电器305动作，相应常开触点闭合，此时相序不同，第一继电器301不动作，相序不同指示灯308工作，断路器2禁止合闸。此时将转接电缆8与输出电缆接口连接的一端的任意两相进行对调，重新进行自动检相序；
若输入电缆接口电源为反相序，输出电缆接口电源为正相序，第二电源控制继电器303和第三电源控制继电器304动作，相应常开触点闭合，此时相序不同，第一继电器301不动作，相序不同指示灯308工作，断路器2禁止合闸。此时将转接电缆8与输出电缆接口连接的一端的任意两相进行对调，重新进行自动检相序；
若输入电缆接口和输出电缆接口电源均为反相序，第二电源控制继电器303和第四电源控制继电器305动作，相应常开触点闭合，此时相序相同，第一继电器301得电动作，相序相同指示灯307工作，断路器2允许合闸。操作分合闸开关5，断路器合闸机构202得电动作，断路器2合闸，应急装备电源输送到低压配电网。
综上所述，本发明公开的一种便携式自动检相序装置，首先采用电源控制 继电器检测不同线路或者不同组别变压器的三相电源的相序类别，再通过电源控制继电器反相连接方式对以上相序类别进行比对，可以可靠地检测出任意低压电源的相序是否相同。不但解决了现有技术中自动核相装置仅能检测同一线路中相同组别变压器的三相电源相位是否相同以及可靠性的问题，同时也解决了人工检测相序安全性低、操作繁琐的问题，为应急装备安全、快速地供电提供了保障。同时该检相序装置还设置了电缆接口及转接电缆，应急装备采用自身电缆即可方便、快速地接入低压电网，解决了应急装备电缆现场改制和电缆重复购置电缆造的问题，节约大量人力、物力。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现和使用本发明。对这些实施例的多种修改方式对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神和范围的情况下，在其他实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种便携式自动检相序装置，包括箱体(1)、断路器(2)、电缆接口(4)、分合闸开关(5)以及自动检相序系统(3)，其特征在于，所述自动检相序系统(3)包括检相序开关(306)、第一继电器(301)、相序相同指示灯(307)、相序不同指示灯(308)以及两组电源控制继电器；所述电源控制继电器每组两个，分别连接于断路器(2)输入端和输出端，两组电源控制继电器与断路器(2)输入端和输出端连接相序相反；同组两个电源控制继电器的一组常开触点串联，两组电源控制继电器串联后并联，所述第一继电器(301)的线圈分别与两组串联后电源控制继电器的常开触点的另一端连接；所述第一继电器(301)包括两组常开触点和一组常闭触点，一组常开触点与相序相同指示灯(307)连接，另一组与分合闸开关(5)串联，一组常闭触点与相序不同指示灯(308)连接。
  2. 根据权利要求1所述的一种便携式自动检相序装置，其特征在于，所述电源控制继电器分别为第一电源控制继电器(302)、第二电源控制继电器(303)、第三电源控制继电器(304)以及第四电源控制继电器(305)；第一电源控制继电器(302)的电源A相、B相、C相与断路器(2)输入端A相、B相、C相连接，第二电源控制继电器(303)的电源A相、B相、C相与断路器(2)输入端C相、B相、A相连接，第三电源控制继电器(304)的电源A相、B相、C相与断路器(2)输出端A相、B相、C相连接，第四电源控制继电器(305)的电源A相、B相、C相与断路器(2)输出端C相、B相、A相连接。
  3. 根据权利要求2所述的一种便携式自动检相序装置，其特征在于，所述断路器(2)包括断路器本体(201)、断路器合闸机构(202)、断路器分闸机构(203)，所述分合闸开关(5)分别与断路器合闸机构(202)及断路器分闸机构(203)连接；所述电缆接口(4)安装于箱体(1)两侧，包括输入电缆接口 和输出电缆接口，所述输入电缆接口包括输入N相接口(404)以及分别与断路器(2)输入端A相、B相、C相端子连接的输入A相接口(401)、输入B相接口(402)、输入C相接口(403)；所述输出电缆接口包括输出N相接口(408)以及分别与断路器(2)输出端A相、B相、C相端子连接的输出A相接口(405)、输出B相接口(406)、输出C相接口(403)，所述输入N相接口(404)与输出N相接口(408)连接。
  4. 根据权利要求3所述的一种便携式自动检相序装置，其特征在于，所述输入电缆接口为快速连接器或铜排，所述输出电缆接口为快速连接器；所述电缆接口(4)与断路器(2)采用电缆或铜排连接。
  5. 根据权利要求4所述的一种便携式自动检相序装置，其特征在于，所述输出电缆接口连接有转接电缆(8)，所述转接电缆(8)一端为与输出电缆接口连接的快速连接器，另一端配置多种可与低压配电网各种形式接口配套的接口形式。
  6. 根据权利要求5所述的一种便携式自动检相序装置，其特征在于，所述转接电缆(8)与低压配电网连接的一端配置的接口形式为铜端子或快速连接器或引流线夹。
  7. 根据权利要求1所述的一种便携式自动检相序装置，其特征在于，所述装置还包括电压电流显示装置(6)，所述电压电流显示装置(6)包括安装于电缆接口(4)与断路器(2)连接的电缆或铜排上的电流信号检测装置(602)以及用于显示电压、电流、功率、频率的电力多功能表(601)。
  8. 根据权利要求1所述的一种便携式自动检相序装置，其特征在于，所述装置还包括用于比对电压幅值、相位角的准同期控制器(309)。
  9. 根据权利要求1所述的一种便携式自动检相序装置，其特征在于，所述装置还包括验电口(7)，所述验电口(7)包括输入验电口和输出验电口，所述输入验电口与断路器(2)输入端连接，输出验电口与断路器(2)输出端连接，所述验电口(7)带有绝缘防护以及防触电结构。
  10. 根据权利要求1所述的一种便携式自动检相序装置，其特征在于，所述箱体(1)包括箱体本体(102)、把手(104)、具备指纹识别功能的门锁(103)以及万向轮(101)，所述箱体本体(102)为双层门结构。
PCT/CN2020/128529 2019-12-03 2020-11-13 一种便携式自动检相序装置 WO2021109833A1 (zh)

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