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CN2404252Y - Two-way power change-over apparatus - Google Patents

Two-way power change-over apparatus Download PDF

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Publication number
CN2404252Y
CN2404252Y CN98240012.8U CN98240012U CN2404252Y CN 2404252 Y CN2404252 Y CN 2404252Y CN 98240012 U CN98240012 U CN 98240012U CN 2404252 Y CN2404252 Y CN 2404252Y
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China
Prior art keywords
power supply
circuit
series
switching
switches
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Expired - Fee Related
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CN98240012.8U
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Chinese (zh)
Inventor
朱跃钢
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HUAWEI ELECTRIC CO Ltd SHENZHEN
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    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

本实用新型公开一种双路电源切换装置,该装置中增加由运放组成的过压切换电路,其输出端分别经二极管接三极管G1、G2;进而分别接至继电器K1、K2的控制线包上;K1、K2由二极管D32电路组成电气互锁回路,并具有K1优先的特点,K1、K2分别控制两路电源,从开到合有一端时间的切换时延,并经三层电气互锁和二层机械互锁。还增加了远距离人工操作功能,并经过控制可控硅DO的通断,为远距离自动切换提供了可能。

The utility model discloses a dual-circuit power supply switching device, in which an overvoltage switching circuit composed of an operational amplifier is added, and its output ends are respectively connected to triodes G1 and G2 through diodes; Above; K1 and K2 are composed of diode D32 circuits to form an electrical interlock circuit, and have the characteristics of K1 priority. K1 and K2 control two power supplies respectively, and there is a switching delay from opening to closing, and the three-layer electrical interlock It is interlocked with the second-floor mechanism. It also increases the function of long-distance manual operation, and provides the possibility for long-distance automatic switching by controlling the on-off of the silicon controlled rectifier DO.

Description

The double loop power supply switching device shifter
The utility model relates to a kind of double loop power supply and switches power distribution equipment.
In some important power supply occasions, accessory power supply generally all is equipped with except the main road power supply,, so that when main road breaks down, replace it with stand-by power supply.In this case, the switching of two-way power supply just seems extremely important.Existing switching device shifter can have been realized three-state, and (state 1: switch I is closed, II breaks; State 2: switch I is disconnected, II closes; State 0: switch I and II break) automatically switch, have the mechanical electric interlocking.Adopt Programmable Logic Controller to realize the Automatic Control of switch transition as the French Schneider NS of company series automatic switchover system, has the generator enabling signal, can also realize the automatic and manual switching of above-mentioned three kinds of states, have the mechanical interlocking function, have the under-voltage fault tripping function of overcurrent.But do not have as yet so far a kind of product can by hardware circuit overvoltage is switched and at a distance manually handoff functionality also be integrated in this class switching device shifter, thereby its function is imperfect, when the overvoltage fault, can not in time switch, probably power consumption equipment be caused damage; Simultaneously, use also inconvenience, especially its operation seems very inconvenient when personnel can't reach the spot.
The purpose of this utility model is exactly to provide a kind of double loop power supply switching device shifter in order to overcome the above problems, and not only can in time switch when under-voltage, phase shortage, and when overvoltage, also can realize switching.
The utility model realizes that the scheme of above-mentioned purpose is: a kind of double loop power supply switching device shifter, comprise first via electric power incoming line interface I, the second road electric power incoming line interface II and switch separately, and under-voltage commutation circuit etc., it is characterized in that: described switch is made of first and second relay; Also include the overvoltage commutation circuit in the device, the overvoltage commutation circuit of two-way power supply I, II comprises integrated transporting discharging N4 and N6 respectively, the normal phase input end of integrated transporting discharging N4 and N6 connects reference voltage respectively, negative-phase input connects the voltage sampling signal of two-way power supply I, II respectively, and output meets first and second triode G1, G2 through diode respectively; The collector output of first and second triode G1, G2 then is connected to the control line of first and second relay K 1, K2 respectively and wraps; Two relay K 1, K2 form the mechanical electric interlocking loop, and the handover delay of an end time is arranged from the period of contact that is disconnected to another road power supply of one road power supply; Two relay K 1, K2 are connected on respectively on the two-way power supply, and the loop is carried out in the machinery by separately, electric interactive interlocking, control opening/close and the closing/open of another road power supply of one road power supply.
Owing to introduced the overvoltage commutation circuit, when this road voltage surpassed the reference voltage Vref of setting, the overvoltage commutation circuit produced signal, and the line bag through control relay K1 such as diode, triode or K2 makes the actuating of relay, and power supply is automatically switched to another road.Like this, match, just can guarantee when any unusual fluctuations appear in voltage, can both automatically switch, make equipment more reliable with original under-voltage, phase shortage commutation circuit.
Fig. 1 is the utility model embodiment automatic switching control circuit schematic diagram.
Fig. 2 is the utility model embodiment machinery, the multiple interlock circuit schematic diagram of electric interactive mode.
Fig. 3 is the utility model embodiment switch connection schematic diagram manually at a distance.
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Embodiment one: see Fig. 1, be depicted as a kind of double loop power supply switching device shifter, comprise first via electric power incoming line interface I, the second road electric power incoming line interface II and switch separately, and under-voltage commutation circuit etc., also include the overvoltage commutation circuit, the overvoltage commutation circuit of two-way power supply I, II comprises integrated transporting discharging N4 and N6 respectively, the normal phase input end of integrated transporting discharging N4 and N6 connects reference voltage respectively, negative-phase input connects the voltage sampling signal of two-way power supply I, II respectively, and output meets first and second triode G1, G2 through diode respectively; The collector output of first and second triode G1, G2 then is connected to the control line of first and second relay K 1, K2 respectively and wraps, control relay K1, K2 the action, and then cause the two-way power supply branch, close.
Two relay K 1, K2 have formed the electrical interlocks loop by diode D32 circuit, and make K1 that the characteristics of preferential action be arranged, K1, K2 carry out loop and switching signal conversion loop by machinery separately, electric interactive interlocking, control opening/close and the closing/open of another road power supply of one road power supply respectively, the handover delay that one end time was arranged from the period of contact that is disconnected to another road power supply of one road power supply, and this process is successively mechanical interlocked through three layers of electrical interlocks and two layers, increased the reliability of device like this, in order to avoid the cyclization phenomenon appears when switching in the two-way input.For reaching this purpose, only need select for use the switch of suitable (specification, model) to get final product.
In the use, the priority difference of two-way power supply, such as often making civil power preferential, oily machine is standby.In this case, preferential for guaranteeing wherein one the tunnel, can diode D32 be set in described switching device shifter, the anode of described diode D32 connects the input of the second triode G2, and the output that negative electrode meets the first triode G1 is on the collector electrode.Control the turn-on and turn-off of G2 by the turn-on and turn-off of G1, thereby reach the preferential purpose of K1 of G1 side.Such as, when the G1 conducting, the D32 negative electrode is an electronegative potential, the D32 conducting, anode is forced electronegative potential, thus G2 is turn-offed by D30, D31, this moment, the K1 coil got electric adhesive, and the K2 coil must not electricity and disconnect, otherwise, when G1 was turn-offed by N3, N4 upset, the D32 negative electrode was a high potential, and D32 is forced to turn-off, D30, D31 anode are high potential and conducting, thereby make the G2 conducting, this moment K1 coil blackout and K2, coil gets electric, thereby guarantees the realization of the priority of K1.And the automatic control of the switching of two-way power supply also is achieved.
See Fig. 2, for guaranteeing the reliable of switching signal, effectively prevent the cyclization of two-way power supply, this device priority is provided with ground floor electrical interlocks G1, D32, G2, second layer electrical interlocks FJ1, FJ2, totally three layers of the 3rd layer of electrical interlocks FH1, FH2.In addition, also be provided with the mechanical interlocked J1-J2 of ground floor, the mechanical interlocked DW1-DW2 of the second layer, every layer of machinery and electrical interlocks are interactive to be provided with:
Switching G1-D32-G2  J1-J2  FH1-FH2  DW1-DW2  switches
Signal FJ1-FJ2
See Fig. 3, in order to realize switching manually at a distance, in the power transmission line of described two-way power supply, have at least on the phase line, for example be connected in series first and second hand switch AK1, AK2 mutually at U1, two hand switch AK1, AK2 are in series, and wherein the first hand switch AK1 is installed on the power supply scene, and it is indoor that the second hand switch AK2 is installed on far distance controlled.When AK1 or the arbitrary switch motion of AK2, simulation U1 phase phase shortage, the N3 upset in the automatic switch-over circuit, thus make the G1 upset realize the switching of circuit.Because switch AK1 and AK2 are hand switches, so it is the same to seem just to like manual switchover.It is indoor that switch AK2 is arranged on far distance controlled, so just not necessarily wants operating personnel to operate to the mains switch scene in person, thereby realized remote manual operation.(in Fig. 3, J1, J2 are power line keysets 2, and N represents the neutral line, and U, V, W represent the three-phase phase line respectively).
In addition, can also realize the telecommunication remote control by communication network.Its principle is seen shown in Figure 3, wherein D0 is a controllable silicon, be connected in the patchcord of this phase of hand switch (AK1, AK2), constitute Remote Control Interface by exchanging monitoring CPU plate and communication network, the triggering and conducting pulse of control D0, but just analog power phase shortage and cause the upset of N3 amplifier on the control board and G1 upset and the Remote Control Automatic switching of realization power supply.

Claims (5)

1.一种双路电源切换装置，包括第一路电源进线接口(I)、第二路电源进线接口(II)及各自的开关，以及欠压切换电路等，其特征是：所述开关由第一、二继电器构成；装置中还包括有过压切换电路，两路电源(I)、(II)的过压切换电路分别包括集成运放N4和N6，集成运放N4和N6的正相输入端分别接参考电压，负相输入端接分别两路电源(I)、(II)的电压采样信号，输出端分别经二极管接第一、二三极管G1、G2；第一、二三极管G1、G2的集电极输出端则分别接至第一、二继电器K1、K2的控制线包上；两个继电器K1、K2组成机械电气互锁回路，且从一路电源的断开到另一路电源的闭合期间有一端时间的切换时延；两个继电器K1、K2分别接在两路电源上，通过各自的机械、电气交互式互锁执行回路，控制一路电源的开/合和另一路电源的合/开。1. A dual-way power switching device, comprising a first power inlet interface (I), a second power inlet interface (II) and respective switches, and an undervoltage switching circuit, etc., is characterized in that: the The switch is composed of the first and second relays; the device also includes an overvoltage switching circuit, and the overvoltage switching circuits of the two power supplies (I), (II) respectively include integrated operational amplifiers N4 and N6, and the integrated operational amplifiers N4 and N6 The positive-phase input terminals are respectively connected to the reference voltage, the negative-phase input terminals are respectively connected to the voltage sampling signals of two power supplies (I) and (II), and the output terminals are respectively connected to the first and second triodes G1 and G2 through diodes; the first and second triodes The collector output terminals of G1 and G2 are respectively connected to the control wires of the first and second relays K1 and K2; the two relays K1 and K2 form a mechanical and electrical interlock circuit, and are disconnected from one power supply to the other. During the closing period, there is a switching delay at one end; the two relays K1 and K2 are respectively connected to the two power supplies, and control the opening/closing of one power supply and the other power supply through their respective mechanical and electrical interactive interlock execution circuits. close/open. 2.如权利要求1所述的切换装置，其特征是：还包括二极管D32，所述二极管D32的阳极接第二三极管G2的输入端，阴极接第一三极管G1的输出端即集电极上；两个继电器K1、K2由二极管D32电路组成电气互锁回路，并具有其中一个继电器K1优先的特点；从一路电源的断开到另一路电源的闭合期间经过三层电气互锁和二层机械互锁。2. The switching device according to claim 1, characterized in that: it also includes a diode D32, the anode of the diode D32 is connected to the input end of the second triode G2, and the cathode is connected to the output end of the first triode G1. On the collector; the two relays K1 and K2 form an electrical interlock circuit composed of a diode D32 circuit, and have the characteristics of one of the relays K1 taking priority; during the period from the disconnection of one power supply to the closing of the other power supply, three layers of electrical interlock and The second floor is mechanically interlocked. 3.如权利要求1或2所述的切换装置，其特征是：在所述的机械电气交互式互锁执行回路中还包括了两个常闭式触点FJ1、FJ2，分别交互式接入两个线圈J1、J2，构成第二层电气互锁回路，其两个两个常闭触点FH1、FH2分别交互式接入合闸回路H1、H2，构成第三层电气互锁回路。3. The switching device according to claim 1 or 2, characterized in that: said mechanical and electrical interactive interlock execution circuit also includes two normally closed contacts FJ1, FJ2, which are interactively connected to each other respectively. The two coils J1 and J2 constitute the second layer of electrical interlocking circuit, and the two normally closed contacts FH1 and FH2 are respectively interactively connected to the closing circuit H1 and H2 to form the third layer of electrical interlocking circuit. 4.如权利要求1或2所述的切换装置，其特征是：在所述两路电源的输电线中，至少有一条相线上串接第一、二手动开关AK1、AK2，两个手动开关AK1、AK2相串联，其中第一手动开关AK1安装于电源现场，第二手动开关AK2安装于远距离控制室内；在采样信号输入回路，在上述串接有开关AK1、AK2的该相再串接可控硅D0，其控制极接监控板的继电器触点上。4. The switching device according to claim 1 or 2, characterized in that: in the transmission lines of the two power sources, at least one phase line is connected in series with the first and second manual switches AK1 and AK2, and the two manual switches are connected in series. The switches AK1 and AK2 are connected in series, wherein the first manual switch AK1 is installed on the power supply site, and the second manual switch AK2 is installed in the remote control room; in the sampling signal input loop, the above-mentioned phase with the switches AK1 and AK2 connected in series The thyristor D0 is connected in series, and its control pole is connected to the relay contact of the monitoring board. 5.如权利要求3所述的切换装置，其特征是：在所述两路电源的输电线中，至少有一条相线上串接第一、二手动开关AK1、AK2，两个手动开关AK1、AK2相串联，其中第一手动开关AK1安装于电源现场，第二手动开关AK2安装于远距离控制室内；在采样信号输入回路，在上述串接有开关AK1、AK2的该相再串接可控硅D0，其控制极接监控板的继电器触点上。5. The switching device as claimed in claim 3, characterized in that: among the transmission lines of the two power sources, at least one phase line is connected in series with the first and second manual switches AK1 and AK2, and the two manual switches AK1 , AK2 in series, wherein the first manual switch AK1 is installed at the power supply site, and the second manual switch AK2 is installed in the remote control room; in the sampling signal input circuit, the above-mentioned phase with the switches AK1 and AK2 connected in series is then connected in series Thyristor D0, its control pole is connected to the relay contact of the monitoring board.
CN98240012.8U 1998-08-19 1998-08-19 Two-way power change-over apparatus Expired - Fee Related CN2404252Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN98240012.8U CN2404252Y (en) 1998-08-19 1998-08-19 Two-way power change-over apparatus

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Application Number Priority Date Filing Date Title
CN98240012.8U CN2404252Y (en) 1998-08-19 1998-08-19 Two-way power change-over apparatus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1324781C (en) * 2003-11-06 2007-07-04 盈正豫顺电子股份有限公司 Backup power supply system with zero power-off transition time
CN100373744C (en) * 2003-03-24 2008-03-05 新昌机械设备株式会社 Unit resident normal/ emergency power supply switch board and its power supply automatic converting device
CN101561664B (en) * 2008-04-14 2011-07-20 中国洛阳浮法玻璃集团有限责任公司 Method for controlling combined type double-control and double-purpose single-backup system and controller thereof
CN104253595A (en) * 2013-06-28 2014-12-31 北京力源兴达科技有限公司 Duplex-feeding topology application

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100373744C (en) * 2003-03-24 2008-03-05 新昌机械设备株式会社 Unit resident normal/ emergency power supply switch board and its power supply automatic converting device
CN1324781C (en) * 2003-11-06 2007-07-04 盈正豫顺电子股份有限公司 Backup power supply system with zero power-off transition time
CN101561664B (en) * 2008-04-14 2011-07-20 中国洛阳浮法玻璃集团有限责任公司 Method for controlling combined type double-control and double-purpose single-backup system and controller thereof
CN104253595A (en) * 2013-06-28 2014-12-31 北京力源兴达科技有限公司 Duplex-feeding topology application

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