CN205429867U - Dual -power switch power monitoring circuit and dual -power switch controller - Google Patents
Dual -power switch power monitoring circuit and dual -power switch controller Download PDFInfo
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- CN205429867U CN205429867U CN201520954510.2U CN201520954510U CN205429867U CN 205429867 U CN205429867 U CN 205429867U CN 201520954510 U CN201520954510 U CN 201520954510U CN 205429867 U CN205429867 U CN 205429867U
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Abstract
The utility model provides a dual -power switch power monitoring circuit is between the control of constant power supply and dual -power switch and all be connected with a voltage detection circuit and the 2nd voltage detection circuit between stand -by power supply and the dual -power switch controller for detect constant power supply and stand -by power supply's three phase voltage, every voltage detection circuit includes a magnitude of voltage detection circuitry who goes on detecting to one of them phase voltage value of constant power supply or stand -by power supply, every the 2nd voltage detection circuit monitors two voltage supervisory circuits that whether reach set voltage value to constant power supply and stand -by power supply's other double -phase phase voltage respectively, a magnitude of voltage detection circuitry and two voltage supervisory circuits between constant power supply and dual -power switch controller are connected with the three phase voltage of electricity commonly used, be connected with stand -by power supply's three phase voltage at stand -by power supply and a magnitude of voltage detection circuitry and two voltage supervisory circuits between the dual -power switch controller. A dual -power switch controller is still provided.
Description
Technical field
This utility model belongs to Low Voltage Electrical Apparatus, particularly to a kind of twin-power switch power supply supervisory circuit and Dual-power switch controller.
Background technology
Along with development in science and technology, no matter in industry or civilian occasion, the place and the equipment application that need uninterrupted power supply are more and more extensive, when twin-power switch electrical equipment uses the power supply mode of standby usage dual power supply fanout operation to guarantee the power-off at a road power failure, another road power supply can come into operation immediately, thus ensures the seriality of power supply.At present, generally there is volume and greatly or be made up of by connecting line multiple independent modules in the intelligent controller of twin-power switch electrical matching, especially in the dual-power transfer switch application of miniaturization, in order to reduce the volume of switch as far as possible, the function of Zenith tracking is abandoned in terms of controller power source voltage detecting, use the fairly simple conducting that voltage threshold value controller part is set and the method having ended supply voltage detection, the method can meet user to a certain extent and use demand, but the defect that the method exists is to judge whether supply voltage exists overvoltage.But in the electrical network of commonly used three-phase four-wire system, the significantly rising of other two phase voltages is necessarily caused when the neutral conductor and arbitrary phase line wrong, especially control power voltage terminal, work long hours and can cause the inefficacy of control equipment under conditions of overvoltage, light then damage equipment, heavy then cause serious accident, therefore there is bigger risk in the supply voltage detection method without Zenith tracking ability in actual applications.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, it is provided that a kind of circuit is simple, with low cost, is fully completed twin-power switch power supply supervisory circuit and the Dual-power switch controller of supply voltage detection.
For achieving the above object, this utility model adopts the technical scheme that
A kind of twin-power switch power supply supervisory circuit, the first voltage detecting circuit and the second voltage detecting circuit it is respectively connected with, for detecting conventional power supply 4 and the three-phase voltage of stand-by power supply 5 between conventional power supply 4 and Dual-power switch controller 2 and between stand-by power supply 5 and Dual-power switch controller 2；Each first voltage detecting circuit includes the voltage value detection circuit detecting a wherein phase voltage value of conventional power supply 4 or stand-by power supply 5, each second voltage detecting circuit includes two voltage monitoring circuits that the other biphase phase voltage of conventional power supply 4 or stand-by power supply 5 is monitored whether reaching setting voltage value, a voltage value detection circuit between conventional power supply 4 and Dual-power switch controller 2 and two voltage monitoring circuits are attached with the three-phase voltage of conventional power supply 4, a voltage value detection circuit between stand-by power supply 5 and Dual-power switch controller 2 and two voltage monitoring circuits are attached with the three-phase voltage of stand-by power supply 5.
Further, two voltage monitoring circuits between conventional power supply 4 and Dual-power switch controller 2 are connected with each other, export first voltage signal to Dual-power switch controller 2, two voltage monitoring circuits between stand-by power supply 5 and Dual-power switch controller 2 are connected with each other, exporting another first voltage signal to Dual-power switch controller 2, the first voltage signal is the linear signal of relation proportional to tested phase voltage；Voltage value detection circuit one second voltage signal of output between conventional power supply 4 and Dual-power switch controller 2 is to Dual-power switch controller 2, a voltage value detection circuit between stand-by power supply 5 and Dual-power switch controller 2 exports another second voltage signal to Dual-power switch controller 2, and the second voltage signal is level logic signal.
Further, a voltage value detection circuit between conventional power supply 4 and Dual-power switch controller 2 carries out the detection of magnitude of voltage to conventional power supply A1 phase and conventional power supply N1 phase voltage, and conventional power supply B1 phase is monitored with conventional power supply N1 phase voltage by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply C1 phase；A voltage value detection circuit between stand-by power supply 5 with Dual-power switch controller 2 carries out the detection of magnitude of voltage to stand-by power supply A2 phase and stand-by power supply N2 phase voltage, and stand-by power supply B2 phase is monitored with stand-by power supply N2 phase voltage by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply C2 phase.
Further, described each voltage value detection circuit includes resistance R1 and resistance R2, one end of resistance R1 and resistance R2 is two inputs of voltage value detection circuit, other end input with two-way admittance optocoupler U1 respectively is connected, the output head anode of two-way admittance optocoupler U1 is connected with power supply VCC, the negative pole of output end of two-way admittance optocoupler U1 is connected to the AD sample port of Dual-power switch controller 2 through resistance R4, one end after resistance R5, electric capacity C1 and electric capacity C2 parallel connection is connected between negative pole of output end and the resistance R4 of two-way admittance optocoupler U1, other end ground connection.
Further, also including that resistance R3 and varistor RV1, varistor RV1 are connected in resistance R1 and one end of resistance R2 in parallel, resistance R3 is connected in the two ends of varistor RV1 in parallel.
nullFurther，Described each voltage monitoring circuit includes resistance R11 and resistance R10，One end of resistance R11 and resistance R10 is two inputs of voltage monitoring circuit，Other end input with rectifier bridge B1 respectively is connected，The output head anode of rectifier bridge B1 is connected to the input anode of one-way conduction optocoupler U4 through resistance R14，The negative pole of output end of rectifier bridge B1 is connected to the input cathode of one-way conduction optocoupler U4，Resistance R13 and resistance R12 series connection，The other end of resistance R13 is connected to the output head anode of rectifier bridge B1，The other end of resistance R12 is connected to the negative pole of output end of rectifier bridge B1，The two ends of electric capacity C5 are connected with the other end of resistance R12 and the other end of resistance R13 respectively，The intermediate node of resistance R13 and resistance R12 is connected to second pin of voltage monitoring chip U3，The two ends of electric capacity C6 are connected respectively to the second pin and the three-prong of voltage monitoring chip U3 of voltage monitoring chip U3，First pin of voltage monitoring chip U3 and the three-prong of voltage monitoring chip U3 are connected with the input anode of one-way conduction optocoupler U4 and the input cathode of one-way conduction optocoupler U4 respectively；It is connected to conventional two voltage monitoring circuit outfans between power supply 4 and Dual-power switch controller 2 be connected with each other, negative pole of output end outputs level signals Port-P1 of the one-way conduction optocoupler U4 of one of them voltage monitoring circuit；It is connected between stand-by power supply 5 and Dual-power switch controller 2 two voltage monitoring circuit outfans be connected with each other, negative pole of output end outputs level signals Port-P2 of the one-way conduction optocoupler U4 of one of them voltage monitoring circuit.
Further, a voltage value detection circuit between conventional power supply 4 and Dual-power switch controller 2 carries out the detection of magnitude of voltage to conventional power supply B1 phase and conventional power supply N1 phase voltage, and conventional power supply A1 phase is monitored with conventional power supply N1 phase voltage by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply C1 phase；A voltage value detection circuit between stand-by power supply 5 with Dual-power switch controller 2 carries out the detection of magnitude of voltage to stand-by power supply B2 phase and stand-by power supply N2 phase voltage, and stand-by power supply A2 phase is monitored with stand-by power supply N2 phase voltage by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply C2 phase.
Further, a voltage value detection circuit between conventional power supply 4 and Dual-power switch controller 2 carries out the detection of magnitude of voltage to conventional power supply C1 phase and conventional power supply N1 phase voltage, and conventional power supply A1 phase is monitored with conventional power supply N1 phase voltage by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply B1 phase；A voltage value detection circuit between stand-by power supply 5 with Dual-power switch controller 2 carries out the detection of magnitude of voltage to stand-by power supply C2 phase and stand-by power supply N2 phase voltage, and stand-by power supply A2 phase is monitored with stand-by power supply N2 phase voltage by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply B2 phase.
Further, described conventional power supply 4 and stand-by power supply 5 are connected with dual-power transfer switch 1 respectively, and dual-power transfer switch 1 is connected with load 3, and Dual-power switch controller 2 outfan is connected with dual-power transfer switch 1.
A kind of Dual-power switch controller, including above-mentioned twin-power switch power supply supervisory circuit 21, parameter tuning circuit 22, failure detector circuit 23, governor circuit 24, display circuit 25, controls to perform circuit 26, communication interface circuit 27 and power circuit 28；The outfan of twin-power switch power supply supervisory circuit 21 is connected with the input of governor circuit 24, the three-phase voltage status information of conventional for monitoring power supply and stand-by power supply is transferred to governor circuit 24, the outfan of governor circuit 24 is connected with the input of display circuit 25 and the input of control execution circuit 26, and governor circuit 24 makes corresponding instruction according to practical power state control display circuit 25 or control execution circuit 26 carries out action；The outfan of parameter tuning circuit 22 is connected with the input of governor circuit 24, provides Man Machine Interface for artificially arranging controller parameter；The outfan of failure detector circuit 23 is connected with the input of governor circuit 24, switch trip, mechanism's tripping and fire-fighting fault-signal is detected in real time, and fault message is sent to governor circuit 24, governor circuit 24 makes corresponding instruction according to fault message control display circuit 25 or control performs circuit 26 and carries out action；Communication interface circuit 27 is connected with governor circuit 24, exchanges for the data between Dual-power switch controller and external equipment, it is achieved remote control switch action, read switch running state information and history run information and remotely diagnosis；The outfan of power circuit 28 is connected with the input of governor circuit 24, and the Power convert that outside provides is become the power supply required for each operating circuit of Dual-power switch controller.
This utility model twin-power switch power supply supervisory circuit between conventional power supply and Dual-power switch controller and be connected the first voltage detecting circuit and the second voltage detecting circuit between stand-by power supply with Dual-power switch controller respectively to respectively the three-phase voltage of conventional power supply and stand-by power supply being detected, each first voltage detecting circuit includes that a wherein phase voltage value of conventional power supply or stand-by power supply is detected by a voltage value detection circuit, each second voltage detecting circuit includes that two voltage monitoring circuits are monitored by the other biphase phase voltage of power supply or stand-by power supply；When arbitrary phase power supply phase line and neutral conductor wrong, additionally two-way can judge whether power supply wiring makes a mistake, use this testing circuit, circuit is simple, economical and practical, and can effectively reduce the harm that neutral conductor wrong causes circuit high voltage to produce, and using this circuit, the overall volume of controller is little.
Accompanying drawing explanation
Fig. 1 is the theory diagram of this utility model twin-power switch power supply supervisory circuit；
Fig. 2 is the circuit diagram of this utility model A1 phase voltage detection circuit；
Fig. 3 is this utility model B1 phase voltage detection circuit and the circuit diagram of C1 phase voltage detection circuit；
Fig. 4 is the circuit diagram of this utility model A2 phase voltage detection circuit；
Fig. 5 is this utility model B2 phase voltage detection circuit and the circuit diagram of C2 phase voltage detection circuit；
Fig. 6 is this utility model Dual-power switch controller theory diagram.
Detailed description of the invention
The embodiment be given below in conjunction with accompanying drawing 1 to 6, further illustrates twin-power switch power supply supervisory circuit of the present utility model and the detailed description of the invention of Dual-power switch controller.Twin-power switch power supply supervisory circuit of the present utility model and Dual-power switch controller are not limited to the following description.
As shown in Figure 6, this utility model Dual-power switch controller, including twin-power switch power supply supervisory circuit 21, parameter tuning circuit 22, failure detector circuit 23, governor circuit 24, display circuit 25, control to perform circuit 26, communication interface circuit 27 and power circuit 28；The outfan of twin-power switch power supply supervisory circuit 21 is connected with the input of governor circuit 24, the three-phase voltage status information of conventional for monitoring power supply and stand-by power supply is transferred to governor circuit 24, the outfan of governor circuit 24 is connected with the input of display circuit 25 and the input of control execution circuit 26, and governor circuit 24 makes corresponding instruction according to practical power state control display circuit 25 or control execution circuit 26 carries out action；The outfan of parameter tuning circuit 22 is connected with the input of governor circuit 24, provides Man Machine Interface for artificially arranging controller parameter；The outfan of failure detector circuit 23 is connected with the input of governor circuit 24, switch trip, mechanism's tripping and fire-fighting fault-signal is detected in real time, and fault message is sent to governor circuit 24, governor circuit 24 makes corresponding instruction according to fault message control display circuit 25 or control performs circuit 26 and carries out action；Communication interface circuit 27 is connected with governor circuit 24, exchanges for the data between Dual-power switch controller and external equipment, it is achieved remote control switch action, read switch running state information and history run information and remotely diagnosis；The outfan of power circuit 28 is connected with the input of governor circuit 24, and the Power convert that outside provides is become the power supply required for each operating circuit of Dual-power switch controller.
As shown in Figure 1, this utility model twin-power switch power supply supervisory circuit, the first voltage detecting circuit and the second voltage detecting circuit it is respectively connected with, for detecting conventional power supply 4 and the three-phase voltage of stand-by power supply 5 between conventional power supply 4 and Dual-power switch controller 2 and between stand-by power supply 5 and Dual-power switch controller 2；Each first voltage detecting circuit includes the voltage value detection circuit detecting a wherein phase voltage value of conventional power supply 4 or stand-by power supply 5, each second voltage detecting circuit includes two voltage monitoring circuits that the other biphase phase voltage of conventional power supply 4 or stand-by power supply 5 is monitored whether reaching setting voltage value, a voltage value detection circuit between conventional power supply 4 and Dual-power switch controller 2 and two voltage monitoring circuits are attached with the three-phase voltage of conventional power supply 4, a voltage value detection circuit between stand-by power supply 5 and Dual-power switch controller 2 and two voltage monitoring circuits are attached with the three-phase voltage of stand-by power supply 5.This utility model twin-power switch power supply supervisory circuit between conventional power supply and Dual-power switch controller and be connected the first voltage detecting circuit and the second voltage detecting circuit between stand-by power supply with Dual-power switch controller respectively to respectively the three-phase voltage of conventional power supply and stand-by power supply being detected, each first voltage detecting circuit includes that a wherein phase voltage value of conventional power supply or stand-by power supply is detected by a voltage value detection circuit, each second voltage detecting circuit includes that two voltage monitoring circuits are monitored by the other biphase phase voltage of power supply or stand-by power supply；When arbitrary phase power supply phase line and neutral conductor wrong, additionally two-way can judge whether power supply wiring makes a mistake, use this testing circuit, circuit is simple, economical and practical, and can effectively reduce the harm that neutral conductor wrong causes circuit high voltage to produce, and using this circuit, the overall volume of controller is little.
As shown in Figure 1, this utility model twin-power switch power supply supervisory circuit, first voltage detecting circuit includes conventional power supply the first testing circuit 211 and stand-by power supply the first testing circuit 213, conventional power supply the first testing circuit 211 and stand-by power supply the first testing circuit 213 include a voltage value detection circuit respectively, second voltage detecting circuit includes that conventional power supply the second testing circuit 212 and stand-by power supply the second testing circuit 214, conventional power supply the second testing circuit 212 and stand-by power supply the second testing circuit 214 include two voltage monitoring circuits respectively.Two voltage monitoring circuits are connected with each other, and export first voltage signal and export second voltage signal to Dual-power switch controller 2 to Dual-power switch controller 2, a voltage value detection circuit.First voltage signal includes common voltage signal a and standby voltage signal c, and the second voltage signal includes common voltage signal b and standby voltage signal d.Common voltage signal a and standby voltage signal c is the linear signal of relation proportional to being detected power supply phase voltage；Common voltage signal b and standby voltage signal d is and is detected the logical signal that whether normal power supply phase voltage is.
As shown in Figure 1, conventional power supply the first testing circuit 211 and conventional power supply the second testing circuit 212 are connected to conventional between power supply 4 and Dual-power switch controller 2, stand-by power supply the first testing circuit 213 and stand-by power supply the first testing circuit 214 are connected between stand-by power supply 5 and Dual-power switch controller 2, conventional power supply 4 and stand-by power supply 5 are connected with dual-power transfer switch 1, dual-power transfer switch 1 is connected with load 3, and Dual-power switch controller 2 outfan is connected with dual-power transfer switch 1.
As shown in Figure 1, the outfan of conventional power supply 4 input with conventional power supply the first testing circuit 211 and conventional power supply the second testing circuit 212 respectively is connected, the outfan of conventional power supply the first testing circuit 211 and conventional power supply the second testing circuit 212 input with Dual-power switch controller 2 respectively is connected, conventional power supply the first testing circuit 211 and conventional power supply the second testing circuit 212 are used for detecting conventional power supply A1 phase and conventional power supply N1 phase, commonly use the phase voltage state of power supply B1 phase and the C1 phase of conventional power supply N1 and conventional power supply Yu conventional power supply N1 phase, and export common voltage signal a and common voltage signal b respectively to Dual-power switch controller 2, for judging that three-phase commonly uses whether supply voltage exists fault；The outfan of stand-by power supply 5 input with stand-by power supply the first testing circuit 213 and stand-by power supply the second testing circuit 214 respectively is connected, the outfan of stand-by power supply the first testing circuit 213 and stand-by power supply the second testing circuit 214 input with Dual-power switch controller 2 respectively is connected, stand-by power supply the first testing circuit 213 and stand-by power supply the second testing circuit 214 are used for detecting stand-by power supply A2 phase and stand-by power supply N2 phase, the phase voltage state of stand-by power supply B2 phase and stand-by power supply N2 phase and stand-by power supply C2 phase and stand-by power supply N2 phase, and export standby voltage signal c respectively, standby voltage signal d is to Dual-power switch controller 2, for judging that three-phase commonly uses whether supply voltage exists fault.
As shown in Figure 2,3, a voltage value detection circuit between conventional power supply 4 and Dual-power switch controller 2 carries out the detection of magnitude of voltage to conventional power supply A1 phase and conventional power supply N1 phase voltage, and conventional power supply B1 phase is monitored with conventional power supply N1 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply C1 phase；A voltage value detection circuit between stand-by power supply 5 with Dual-power switch controller 2 carries out the detection of magnitude of voltage to stand-by power supply A2 phase and stand-by power supply N2 phase voltage, and stand-by power supply B2 phase is monitored with stand-by power supply N2 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply C2 phase.Especially, a voltage value detection circuit between conventional power supply 4 and Dual-power switch controller 2 carries out the detection of magnitude of voltage to conventional power supply B1 phase and conventional power supply N1 phase voltage, and conventional power supply A1 phase is monitored with conventional power supply N1 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply C1 phase；A voltage value detection circuit between stand-by power supply 5 with Dual-power switch controller 2 carries out the detection of magnitude of voltage to stand-by power supply B2 phase and stand-by power supply N2 phase voltage, and stand-by power supply A2 phase is monitored with stand-by power supply N2 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply C2 phase.Again or, a voltage value detection circuit between conventional power supply 4 and Dual-power switch controller 2 carries out the detection of magnitude of voltage to conventional power supply C1 phase and conventional power supply N1 phase voltage, and conventional power supply A1 phase is monitored with conventional power supply N1 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply B1 phase；A voltage value detection circuit between stand-by power supply 5 with Dual-power switch controller 2 carries out the detection of magnitude of voltage to stand-by power supply C2 phase and stand-by power supply N2 phase voltage, and stand-by power supply A2 phase is monitored with stand-by power supply N2 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply B2 phase.
As shown in Figure 2,3, conventional power supply the first testing circuit 211 includes A1 phase voltage detection circuit 11, A1 phase voltage detection circuit 11 is used for detecting conventional power supply A1 phase and conventional power supply N1 phase voltage state, A1 phase voltage detection circuit 11 is a voltage value detection circuit, and exports common voltage signal a to Dual-power switch controller 2；Conventional power supply the second testing circuit 212 includes that B1 phase voltage detection circuit 12 and C1 phase voltage detection circuit 13, B1 phase voltage detection circuit 12 and C1 phase voltage detection circuit 13 are two voltage monitoring circuits.B1 phase voltage detection circuit 12 is used for detecting conventional power supply B1 phase and conventional power supply N1 phase voltage, C1 phase voltage detection circuit 13 is used for detecting conventional power supply C1 phase and conventional power supply N1 phase voltage state, and B1 phase voltage detection circuit 12 and C1 phase voltage detection circuit 13 connects and exports common voltage signal b to Dual-power switch controller 2.
As shown in Figure 2, A1 phase voltage detection circuit 11 includes resistance R1, resistance R2, resistance R3 and varistor RV1, resistance R1 is connected with conventional power supply A1 phase and conventional power supply N1 respectively with one end of resistance R2, the other end is connected with the input of two-way admittance optocoupler U1, varistor RV1 is connected in resistance R1 and one end of resistance R2 in parallel, resistance R3 is connected in the two ends of varistor RV1 in parallel, the output head anode of two-way admittance optocoupler U1 is connected with power supply VCC, the negative pole of output end of two-way admittance optocoupler U1 is connected to the AD sample port of Dual-power switch controller 2 through resistance R4, resistance R5, one end after electric capacity C1 and electric capacity C2 parallel connection is connected between negative pole of output end and the resistance R4 of two-way admittance optocoupler U1, other end ground connection.Commonly use power supply A1 phase voltage and conventional power supply N1 phase voltage two ends through current-limiting resistance R1 and resistance R2 to two-way admittance optocoupler U1 input, the outfan of two-way admittance optocoupler U1 exports the ac current signal proportional to input terminal voltage, sampled resistance R5 is converted into corresponding ac voltage signal, this ac voltage signal is converted into the d. c. voltage signal AD-A1 consistent with ac voltage signal virtual value after electric capacity C1 rectification, and this voltage signal is sent to AD sample port, thus calculate the voltage effective value between conventional power supply A1 phase voltage and conventional power supply N1.
nullAs shown in Figure 3，B1 phase voltage detection circuit 12 includes resistance R11 and resistance R10，Resistance R11 is connected with conventional power supply B1 phase and conventional power supply N1 respectively with one end of resistance R10，The other end is connected with the input of rectifier bridge B1，The output head anode of rectifier bridge B1 is connected to the input anode of one-way conduction optocoupler U4 through resistance R14，The negative pole of output end of rectifier bridge B1 is connected to the input cathode of one-way conduction optocoupler U4，Resistance R13 and resistance R12 series connection，The other end of resistance R13 is connected to the output head anode of rectifier bridge B1，The other end of resistance R12 is connected to the negative pole of output end of rectifier bridge B1，The two ends of electric capacity C5 are connected with the other end of resistance R12 and the other end of resistance R13 respectively，The intermediate node of resistance R13 and resistance R12 is connected to second pin of voltage monitoring chip U2，The two ends of electric capacity C6 are connected respectively to the second pin and the three-prong of voltage monitoring chip U2 of voltage monitoring chip U2，First pin of voltage monitoring chip U2 and the three-prong of voltage monitoring chip U2 are connected with the input anode of one-way conduction optocoupler U4 and the input cathode of one-way conduction optocoupler U4 respectively；The output head anode of one-way conduction optocoupler U4 is connected to power supply VCC, and the negative pole of output end of one-way conduction optocoupler U4 is connected with the output head anode of one-way conduction optocoupler U5；nullC1 phase voltage detection circuit 13 includes resistance R21 and resistance R20，Resistance R21 is connected with conventional power supply C1 phase and conventional power supply N1 respectively with one end of resistance R20，The other end is connected with the input of rectifier bridge B2，The output head anode of rectifier bridge B2 is connected to the input anode of one-way conduction optocoupler U5 through resistance R24，The negative pole of output end of rectifier bridge B2 is connected to the input cathode of one-way conduction optocoupler U5，Resistance R23 and resistance R22 series connection，The other end of resistance R23 is connected to the output head anode of rectifier bridge B2，The other end of resistance R22 is connected to the negative pole of output end of rectifier bridge B2，The two ends of electric capacity C7 are connected with the other end of resistance R22 and the other end of resistance R23 respectively，The intermediate node of resistance R23 and resistance R22 is connected to second pin of voltage monitoring chip U3，The two ends of electric capacity C8 are connected respectively to the second pin and the three-prong of voltage monitoring chip U3 of voltage monitoring chip U3，First pin of voltage monitoring chip U3 and the three-prong of voltage monitoring chip U3 are connected with the input anode of one-way conduction optocoupler U5 and the input cathode of one-way conduction optocoupler U5 respectively；Negative pole of output end outputs level signals Port-P1 of one-way conduction optocoupler U5.Conventional power supply B1 phase voltage becomes DC voltage with conventional power supply N1 phase voltage two ends alternating voltage through bridge rectifier, voltage monitoring chip U2 samples d. c. voltage signal by divider resistance R12 and resistance R13, and output signal to one-way conduction optocoupler U4 according to the voltage threshold of design, the outfan of one-way conduction optocoupler U4 will turn on, otherwise, one-way conduction optocoupler U4 ends.In like manner in conducting and the cut-off of one-way conduction optocoupler U4, the conducting of one-way conduction optocoupler U5 and cut-off, depend on conventional magnitude of voltage size between power supply C1 phase and conventional power supply N1 phase.DC source Vcc, one-way conduction optocoupler U4 and one-way conduction optocoupler U5 series connection, thus the outfan of one-way conduction optocoupler U5 will produce level signal Port-P1, only when conventional power supply B1 phase and conventional power supply C1 phase supply voltage are the most normal, one-way conduction optocoupler U4 and one-way conduction optocoupler U5 just can simultaneously turn on output high level signal, on the contrary output low level signal.
As shown in Figure 4,5, stand-by power supply the first testing circuit 213 includes A2 phase voltage detection circuit 41, A2 phase voltage detection circuit 41 is a voltage value detection circuit, is used for detecting stand-by power supply A2 phase and stand-by power supply N2 phase voltage state, and exports standby voltage signal c to Dual-power switch controller 2；Stand-by power supply the second testing circuit 214 includes B2 phase voltage detection circuit 42 and C2 phase voltage detection circuit 43, B2 phase voltage detection circuit 42 and C2 phase voltage detection circuit 43 is two voltage monitoring circuits, B2 phase voltage detection circuit 42 is used for detecting stand-by power supply B2 phase and stand-by power supply N2 phase voltage, C2 phase voltage detection circuit 43 is used for detecting stand-by power supply C2 phase and stand-by power supply N2 phase voltage state, and B2 phase voltage detection circuit 42 and C2 phase voltage detection circuit 43 connects and exports standby voltage signal d to Dual-power switch controller 2.Stand-by power supply the first testing circuit 213 detects voltage system in like manner in conventional power supply the first testing circuit 211.Stand-by power supply the second testing circuit 214 detects voltage system in like manner in conventional power supply the second testing circuit 212.
nullAs shown in Figure 4，A2 phase voltage detection circuit 41 includes resistance R41，Resistance R42，Resistance R38 and varistor RV3，One end of resistance R41 and resistance R42 is connected with stand-by power supply A2 phase and stand-by power supply N2 respectively，The other end is connected with the input of two-way admittance optocoupler U7，Varistor RV3 is connected in resistance R41 and one end of resistance R42 in parallel，Resistance R38 is connected in the two ends of varistor RV3 in parallel，The output head anode of two-way admittance optocoupler U7 is connected with power supply VCC，The negative pole of output end of two-way admittance optocoupler U7 is connected to the AD sample port of Dual-power switch controller 2 through resistance R44，Resistance R45、One end after electric capacity C12 and electric capacity C13 parallel connection is connected between negative pole of output end and the resistance R44 of two-way admittance optocoupler U7，Other end ground connection；
nullAs shown in Figure 5，B2 phase voltage detection circuit 42 includes resistance R51 and resistance R50，One end of resistance R51 and resistance R50 is connected with stand-by power supply B2 phase and stand-by power supply N2 respectively，The other end is connected with the input of rectifier bridge B3，The output head anode of rectifier bridge B3 is connected to the input anode of one-way conduction optocoupler U10 through resistance R54，The negative pole of output end of rectifier bridge B3 is connected to the input cathode of one-way conduction optocoupler U10，Resistance R53 and resistance R52 series connection，The other end of resistance R53 is connected to the output head anode of rectifier bridge B3，The other end of resistance R52 is connected to the negative pole of output end of rectifier bridge B3，The two ends of electric capacity C15 are connected with the other end of resistance R53 and the other end of resistance R52 respectively，The intermediate node of resistance R53 and resistance R52 is connected to second pin of voltage monitoring chip U8，The two ends of electric capacity C16 are connected respectively to the second pin and the three-prong of voltage monitoring chip U8 of voltage monitoring chip U8，First pin of voltage monitoring chip U8 and the three-prong of voltage monitoring chip U8 are connected with the input anode of one-way conduction optocoupler U10 and the input cathode of one-way conduction optocoupler U10 respectively；The output head anode of one-way conduction optocoupler U10 is connected to power supply VCC, and the negative pole of output end of one-way conduction optocoupler U10 is connected with the output head anode of one-way conduction optocoupler U11；nullC2 phase voltage detection circuit 43 includes resistance R61 and resistance R60，One end of resistance R61 and resistance R60 is connected with stand-by power supply C2 phase and stand-by power supply N2 respectively，The other end is connected with the input of rectifier bridge B4，The output head anode of rectifier bridge B4 is connected to the input anode of one-way conduction optocoupler U11 through resistance R64，The negative pole of output end of rectifier bridge B4 is connected to the input cathode of one-way conduction optocoupler U11，Resistance R63 and resistance R62 series connection，The other end of resistance R63 is connected to the output head anode of rectifier bridge B4，The other end of resistance R62 is connected to the negative pole of output end of rectifier bridge B4，The two ends of electric capacity C17 are connected with the other end of resistance R62 and the other end of resistance R63 respectively，The intermediate node of resistance R63 and resistance R62 is connected to second pin of voltage monitoring chip U9，The two ends of electric capacity C18 are connected respectively to the second pin and the three-prong of voltage monitoring chip U9 of voltage monitoring chip U9，First pin of voltage monitoring chip U9 and the three-prong of voltage monitoring chip U9 are connected with the input anode of one-way conduction optocoupler U11 and the input cathode of one-way conduction optocoupler U11 respectively；Negative pole of output end outputs level signals Port-P2 of one-way conduction optocoupler U11.
Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. a twin-power switch power supply supervisory circuit, it is characterized in that: between conventional power supply (4) and Dual-power switch controller (2) and between stand-by power supply (5) and Dual-power switch controller (2), be respectively connected with the first voltage detecting circuit and the second voltage detecting circuit, be used for detecting conventional power supply (4) and the three-phase voltage of stand-by power supply (5)；Each first voltage detecting circuit includes the voltage value detection circuit detecting a wherein phase voltage value of conventional power supply (4) or stand-by power supply (5), each second voltage detecting circuit includes two voltage monitoring circuits that the other biphase phase voltage of conventional power supply (4) or stand-by power supply (5) is monitored whether reaching setting voltage value, a voltage value detection circuit between conventional power supply (4) and Dual-power switch controller (2) and two voltage monitoring circuits are attached with the three-phase voltage of conventional power supply (4), a voltage value detection circuit between stand-by power supply (5) and Dual-power switch controller (2) and two voltage monitoring circuits are attached with the three-phase voltage of stand-by power supply (5).
Twin-power switch power supply supervisory circuit the most according to claim 1, it is characterized in that: two voltage monitoring circuits between conventional power supply (4) and Dual-power switch controller (2) are connected with each other, export first voltage signal to Dual-power switch controller (2), two voltage monitoring circuits between stand-by power supply (5) and Dual-power switch controller (2) are connected with each other, exporting another first voltage signal to Dual-power switch controller (2), the first voltage signal is the linear signal of relation proportional to tested phase voltage；Voltage value detection circuit between conventional power supply (4) and Dual-power switch controller (2) exports second voltage signal to Dual-power switch controller (2), a voltage value detection circuit between stand-by power supply (5) and Dual-power switch controller (2) exports another second voltage signal to Dual-power switch controller (2), and the second voltage signal is level logic signal.
Twin-power switch power supply supervisory circuit the most according to claim 2, it is characterized in that: a voltage value detection circuit between conventional power supply (4) with Dual-power switch controller (2) carries out the detection of magnitude of voltage to conventional power supply A1 phase and conventional power supply N1 phase voltage, conventional power supply B1 phase is monitored with conventional power supply N1 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply C1 phase；
A voltage value detection circuit between stand-by power supply (5) with Dual-power switch controller (2) carries out the detection of magnitude of voltage to stand-by power supply A2 phase and stand-by power supply N2 phase voltage, and stand-by power supply B2 phase is monitored with stand-by power supply N2 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply C2 phase.
Twin-power switch power supply supervisory circuit the most according to claim 1, it is characterized in that: described each voltage value detection circuit includes resistance R1 and resistance R2, one end of resistance R1 and resistance R2 is two inputs of voltage value detection circuit, other end input with two-way admittance optocoupler U1 respectively is connected, the output head anode of two-way admittance optocoupler U1 is connected with power supply VCC, the negative pole of output end of two-way admittance optocoupler U1 is connected to the AD sample port of Dual-power switch controller (2) through resistance R4, resistance R5, one end after electric capacity C1 and electric capacity C2 parallel connection is connected between negative pole of output end and the resistance R4 of two-way admittance optocoupler U1, other end ground connection.
Twin-power switch power supply supervisory circuit the most according to claim 4, it is characterised in that: also including that resistance R3 and varistor RV1, varistor RV1 are connected in resistance R1 and one end of resistance R2 in parallel, resistance R3 is connected in the two ends of varistor RV1 in parallel.
nullTwin-power switch power supply supervisory circuit the most according to claim 1，It is characterized in that: described each voltage monitoring circuit includes resistance R11 and resistance R10，One end of resistance R11 and resistance R10 is two inputs of voltage monitoring circuit，Other end input with rectifier bridge B1 respectively is connected，The output head anode of rectifier bridge B1 is connected to the input anode of one-way conduction optocoupler U4 through resistance R14，The negative pole of output end of rectifier bridge B1 is connected to the input cathode of one-way conduction optocoupler U4，Resistance R13 and resistance R12 series connection，The other end of resistance R13 is connected to the output head anode of rectifier bridge B1，The other end of resistance R12 is connected to the negative pole of output end of rectifier bridge B1，The two ends of electric capacity C5 are connected with the other end of resistance R12 and the other end of resistance R13 respectively，The intermediate node of resistance R13 and resistance R12 is connected to second pin of voltage monitoring chip U3，The two ends of electric capacity C6 are connected respectively to the second pin and the three-prong of voltage monitoring chip U3 of voltage monitoring chip U3，First pin of voltage monitoring chip U3 and the three-prong of voltage monitoring chip U3 are connected with the input anode of one-way conduction optocoupler U4 and the input cathode of one-way conduction optocoupler U4 respectively；It is connected to conventional two voltage monitoring circuit outfans between power supply (4) and Dual-power switch controller (2) be connected with each other, negative pole of output end outputs level signals Port-P1 of the one-way conduction optocoupler U4 of one of them voltage monitoring circuit；Two the voltage monitoring circuit outfans being connected between stand-by power supply (5) and Dual-power switch controller (2) are connected with each other, negative pole of output end outputs level signals Port-P2 of the one-way conduction optocoupler U4 of one of them voltage monitoring circuit.
Twin-power switch power supply supervisory circuit the most according to claim 2, it is characterized in that: a voltage value detection circuit between conventional power supply (4) with Dual-power switch controller (2) carries out the detection of magnitude of voltage to conventional power supply B1 phase and conventional power supply N1 phase voltage, conventional power supply A1 phase is monitored with conventional power supply N1 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply C1 phase；
A voltage value detection circuit between stand-by power supply (5) with Dual-power switch controller (2) carries out the detection of magnitude of voltage to stand-by power supply B2 phase and stand-by power supply N2 phase voltage, and stand-by power supply A2 phase is monitored with stand-by power supply N2 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply C2 phase.
Twin-power switch power supply supervisory circuit the most according to claim 2, it is characterized in that: a voltage value detection circuit between conventional power supply (4) with Dual-power switch controller (2) carries out the detection of magnitude of voltage to conventional power supply C1 phase and conventional power supply N1 phase voltage, conventional power supply A1 phase is monitored with conventional power supply N1 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with conventional power supply N1 phase and conventional power supply B1 phase；
A voltage value detection circuit between stand-by power supply (5) with Dual-power switch controller (2) carries out the detection of magnitude of voltage to stand-by power supply C2 phase and stand-by power supply N2 phase voltage, and stand-by power supply A2 phase is monitored with stand-by power supply N2 phase by two voltage monitoring circuits of the second voltage detecting circuit respectively with stand-by power supply N2 and stand-by power supply B2 phase.
Twin-power switch power supply supervisory circuit the most according to claim 1, it is characterized in that: described conventional power supply (4) and stand-by power supply (5) are connected with dual-power transfer switch (1) respectively, dual-power transfer switch (1) is connected with load (3), and Dual-power switch controller (2) outfan is connected with dual-power transfer switch (1).
10. a Dual-power switch controller, it is characterized in that: include the arbitrary described twin-power switch power supply supervisory circuit (21) of claim 1-9, parameter tuning circuit (22), failure detector circuit (23), governor circuit (24), display circuit (25), controls to perform circuit (26), communication interface circuit (27) and power circuit (28)；The outfan of twin-power switch power supply supervisory circuit (21) is connected with the input of governor circuit (24), the three-phase voltage status information of conventional for monitoring power supply and stand-by power supply is transferred to governor circuit (24), the outfan of governor circuit (24) is connected with the input of display circuit (25) and the input of control execution circuit (26), and governor circuit (24) makes corresponding instruction according to practical power state control display circuit (25) or control execution circuit (26) carries out action；The outfan of parameter tuning circuit (22) is connected with the input of governor circuit (24), provides Man Machine Interface for artificially arranging controller parameter；The outfan of failure detector circuit (23) is connected with the input of governor circuit (24), switch trip, mechanism's tripping and fire-fighting fault-signal is detected in real time, and fault message is sent to governor circuit (24), governor circuit (24) makes corresponding instruction according to fault message control display circuit (25) or control performs circuit (26) and carries out action；Communication interface circuit (27) is connected with governor circuit (24), exchange for the data between Dual-power switch controller and external equipment, realize remote control switch action, read switch running state information and history run information and remotely diagnosis；The outfan of power circuit (28) is connected with the input of governor circuit (24), and the Power convert that outside provides is become the power supply required for each operating circuit of Dual-power switch controller.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112383131A (en) * | 2020-10-30 | 2021-02-19 | 天津航空机电有限公司 | Main control feedback circuit for realizing dual-redundancy power supply switching |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112383131A (en) * | 2020-10-30 | 2021-02-19 | 天津航空机电有限公司 | Main control feedback circuit for realizing dual-redundancy power supply switching |
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Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of utility model: Monitoring circuit and controller of dual power switch power supply Granted publication date: 20160803 License type: Common License Record date: 20201021 |
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