CN113805560A - Turnout monitoring device and method applied to eight-wire system turnout control circuit - Google Patents
Turnout monitoring device and method applied to eight-wire system turnout control circuit Download PDFInfo
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- CN113805560A CN113805560A CN202110931502.6A CN202110931502A CN113805560A CN 113805560 A CN113805560 A CN 113805560A CN 202110931502 A CN202110931502 A CN 202110931502A CN 113805560 A CN113805560 A CN 113805560A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The invention provides a turnout monitoring device and method applied to an eight-wire turnout control circuit, wherein the device comprises the following components: the device comprises an action voltage acquisition module, an action current acquisition module, a power acquisition module and a representation voltage acquisition module; the action voltage acquisition module and the action current acquisition module are used for acquiring three-phase input voltage and three-phase input current in a turnout action circuit of the alternating current point switch; the power acquisition module determines the operating power of the alternating current point switch according to the three-phase input voltage and the three-phase input current; the indication voltage acquisition module is used for acquiring the turnout indication voltage of the turnout indication circuit, and comprises the working voltage of a turnout positioning indication relay and the working voltage of a turnout reverse position indication relay. The turnout monitoring device and the turnout monitoring method provided by the invention are suitable for collecting and monitoring the turnout key information of relevant information such as three-phase input voltage, three-phase input current, turnout indication voltage and the like of all eight-wire turnout control circuits, and have strong universality.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a turnout monitoring device and method applied to an eight-wire turnout control circuit.
Background
The turnout monitoring is an important component in a signal monitoring system in a rail transit line, mainly realizes the acquisition and processing of parameters such as turnout action voltage, turnout action current, running power of an alternating current switch machine, turnout indication voltage and the like, and is a main mode and means for turnout fault analysis. In domestic rail transit lines, a five-wire system and eight-wire system turnout control circuit is mainly adopted to realize turnout action control and state representation feedback of an alternating current switch machine.
In order to solve the problem of turnout circuit failure caused by arc discharge of a contact of a 2DQJ relay in a five-wire eight-wire turnout control circuit, the eight-wire turnout control circuit of the current alternating current switch machine begins to adopt an eight-wire turnout control circuit, and the defect is overcome by separating a turnout action circuit and a turnout indication circuit.
However, the existing acquisition circuit and module for monitoring the turnout are only suitable for a five-wire turnout control circuit, and cannot monitor the turnout state controlled by an eight-wire turnout control circuit in real time.
Disclosure of Invention
The invention provides a turnout monitoring device and method applied to an eight-wire turnout control circuit, which are used for solving the technical blank of monitoring the eight-wire turnout control circuit in real time in the prior art.
In a first aspect, the present invention provides a switch monitoring device applied to an eight-wire switch control circuit, including: the device comprises an action voltage acquisition module, an action current acquisition module, a power acquisition module and a representation voltage acquisition module; the action voltage acquisition module is used for acquiring three-phase input voltage in a turnout action circuit of the alternating current point switch; the action current acquisition module is used for acquiring three-phase input current in the turnout action circuit; the power acquisition module is used for determining the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; the indication voltage acquisition module is used for acquiring the turnout indication voltage of the turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
The invention provides a switch monitoring device applied to an eight-wire switch control circuit, which further comprises: a switching value acquisition module; the switch value acquisition module is used for acquiring the switch value of the action opportunity of a first switch starting relay in the switch indication circuit, the switch value of the position indication of the switch positioning indication relay and the switch value of the position indication of the switch reverse position indication relay.
According to the switch monitoring device applied to the eight-wire switch control circuit provided by the invention, the action voltage acquisition module comprises: an A phase voltage collector, a B phase voltage collector and a C phase voltage collector; one input end of the A-phase voltage collector is connected with an X1 loop in the turnout action circuit, and the X1 loop is connected with A of the three-phase input voltage through a group of auxiliary contacts of the first turnout starting relay; two input ends of the B-phase voltage collector are respectively connected with an X2 loop and an X4 loop in the turnout action circuit; the X2 loop and the X4 loop are respectively connected with two fixed contacts of a first group of auxiliary contacts of a second turnout starting relay, and movable contacts of the first group of auxiliary contacts of the second turnout starting relay are connected with B of the three-phase input voltage through a first group of auxiliary contacts of a duplex relay of the first turnout starting relay; two input ends of the C-phase voltage collector are respectively connected with an X3 loop and an X5 loop in the turnout action circuit; the X3 loop and the X5 loop are respectively connected with two fixed contacts of a second group of auxiliary contacts of a second turnout starting relay, and movable contacts of the second group of auxiliary contacts of the second turnout starting relay are connected with the C of the three-phase input voltage through the second group of auxiliary contacts of the compound relay.
According to the turnout monitoring device applied to the eight-wire turnout control circuit provided by the invention, the action current acquisition module comprises: the phase current collector comprises a phase current collector A, a phase current collector B and a phase current collector C; the A-phase current collector is used for acquiring input current in the X1 loop through a first current sensor; the B-phase current collector is used for acquiring input currents in the X2 loop and the X4 loop through a second current sensor; and the C-phase current collector is used for acquiring input currents in the X3 loop and the X5 loop through a third current sensor.
According to the switch monitoring device applied to the eight-wire switch control circuit provided by the invention, the indication voltage acquisition module comprises: the inverted representation voltage collector and the positioning representation voltage collector; the two input ends of the reverse-position indicating voltage collector are respectively connected with an X7 loop and an X8 loop in the turnout indicating circuit and are used for acquiring the working voltage of the turnout reverse-position indicating relay; the two input ends of the positioning indication voltage collector are respectively connected with an X6 loop and an X8 loop in the turnout indication circuit and are used for obtaining the working voltage of the turnout positioning indication relay; the switch positioning indicating relay is connected with the X6 loop in series; one end of a coil of the turnout positioning indication relay is connected with the anode of the first diode, and the other end of the coil of the turnout positioning indication relay is connected with a static contact of a third group of auxiliary contacts of the second turnout starting relay; the turnout reverse position indicates that a relay is connected with the X7 loop in series; one end of a coil of the turnout reversal indicating relay is connected with the cathode of a second diode, and the other end of the coil of the turnout reversal indicating relay is connected with another static contact of a third group of auxiliary contacts of the second turnout starting relay; the movable contact of the third group of auxiliary contacts of the second turnout starting relay is connected with one end of the secondary of the transformer through the other group of auxiliary contacts of the first turnout starting relay; the other end of the secondary of the representing transformer is connected with one end of the X8 loop; and the cathode of the first diode, the anode of the second diode and the other end of the X8 loop are respectively connected with a three-phase winding of a switch machine.
According to the switch monitoring device applied to the eight-wire switch control circuit provided by the invention, the power acquisition module is used for determining the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current, and specifically comprises the following steps: acquiring three-phase input voltage and three-phase input current of a plurality of sampling time points according to a preset sampling period; respectively calculating the root mean square value of each phase of input voltage acquired at all sampling time points to determine the three-phase average line voltage; respectively calculating the root mean square value of each phase of input current collected at all sampling time points to determine three-phase average input current; and calculating the three-phase average line voltage and the three-phase average input current by using a power calculation formula so as to obtain the operating power of the alternating current switch machine.
According to the turnout monitoring device applied to the eight-wire turnout control circuit, the input ends of the action voltage acquisition module, the action current acquisition module and the representation voltage acquisition module are connected with an isolation module in series.
According to the turnout monitoring device applied to the eight-wire turnout control circuit, the power acquisition module is further used for receiving the action opportunity switching value of the first turnout starting relay, the position indication switching value of the turnout positioning indication relay and the position indication switching value of the turnout reverse position indication relay which are uploaded by the switching value acquisition module; determining the positioning time of the alternating current point switch according to the action time switching value of the first turnout starting relay and the position indicating switching value of the turnout positioning indicating relay; and determining the reverse timing of the alternating current point switch according to the switching value of the action timing of the first turnout starting relay and the switching value of the position representation of the turnout reverse indicating relay.
The invention provides a switch monitoring device applied to an eight-wire switch control circuit, which further comprises: a communication output module; and the communication output module is used for sending the operating power of the alternating current point switch, the working voltage of the turnout positioning indicating relay and the working voltage of the turnout reverse indicating relay to an upper computer.
In a second aspect, the present invention further provides a switch monitoring method applied to an eight-wire switch control circuit, including based on any one of the switch monitoring devices, to execute the following operation steps: collecting three-phase input voltage and three-phase input current in a turnout action circuit of an alternating current switch machine so as to determine the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; acquiring turnout indication voltage of a turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
In a third aspect, the present invention provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor executes the program to implement the steps of the switch monitoring method as applied to the eight-wire switch control circuit.
In a fourth aspect, the present invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the switch monitoring method as applied to the eight-wire switch control circuit.
The turnout monitoring device and method applied to the eight-wire turnout control circuit provided by the invention are suitable for collecting and monitoring the turnout key information of relevant information such as three-phase input voltage, three-phase input current, turnout indication voltage and the like of all eight-wire turnout control circuits, and have strong universality.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a turnout monitoring device applied to an eight-wire turnout control circuit provided by the invention;
fig. 2 is a schematic circuit diagram of a switch monitoring device applied to an eight-wire switch control circuit according to the present invention;
FIG. 3 is a schematic diagram of the operation of the power harvesting module and a voltage harvesting module provided by the present invention;
FIG. 4 is a schematic flow chart of a turnout monitoring method applied to an eight-wire turnout control circuit according to the present invention;
fig. 5 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or device that comprises the element. The terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The following describes the switch monitoring device and device applied to the eight-wire switch control circuit provided by the embodiment of the invention with reference to fig. 1-5.
Fig. 1 is a schematic structural diagram of a switch monitoring device applied to an eight-wire switch control circuit, as shown in fig. 1, which mainly includes:
the device comprises an action voltage acquisition module, an action current acquisition module, a power acquisition module and a representation voltage acquisition module;
the action voltage acquisition module is used for acquiring three-phase input voltage in a turnout action circuit of the alternating current point switch;
the action current acquisition module is used for acquiring three-phase input current in the turnout action circuit;
the power acquisition module is used for determining the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current;
the indication voltage acquisition module is used for acquiring the turnout indication voltage of the turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
The input ends of the action voltage acquisition module and the indication voltage acquisition module are connected to relevant contacts on an acquisition base in a distributing cabinet, and three-phase input voltage (namely working voltage of an alternating current point switch) and turnout indication voltage of an eight-wire turnout control circuit (hereinafter, the three-phase input voltage is simply referred to as a turnout control circuit) are acquired; and the action current acquisition module is used for acquiring three-phase input current (namely the working current of the alternating current switch machine) from the distribution cabinet.
The method for reflecting the real-time position of the turnout in the remote signal building by connecting a group of positioning indicating contacts or a group of reverse indicating contacts of an automatic switch of the alternating current switch machine with the turnout indicating circuit respectively can be as follows:
the DBJ is switched on by a positioning contact of the automatic switch; the contacts are shown inverted and the contact fork inverted shows the relay FBJ.
In the switch indication circuit, the front contact of the switch positioning indication relay DBJ and the switch reverse indication relay FBJ are used for indicating the position of the switch, so that the shape of the route is distinguished, various important interlocking relations are involved, and the route indication light band is formed on the console for indicating the position of the switch.
In view of this, the switch indicating circuit must be a safety circuit, and whether its work is normal or not will directly relate to the driving safety, and must meet the requirements of failure-safety, so the invention monitors the switch indicating voltage of the switch indicating circuit in real time on the basis of monitoring the working voltage and working current of the alternating current switch machine, that is, provides the monitoring of the working voltage of the switch positioning indicating relay and the working voltage of the switch reverse indicating relay, to comprehensively judge the real-time position of the switch.
Specifically, only one turnout can be used for representing the sucking-up of the relay to reflect a certain position of the turnout, and the sucking-up and falling-down of the relay are not used for representing two positions of the turnout respectively, namely the sucking-up of the relay DBJ can be represented by the positioning of the turnout to represent that the turnout is positioned; the switch is reversed to indicate that the switch is reversed by sucking up the relay FBJ.
Through the real-time monitoring to switch show relay, when the external line takes place to mix the line or sneak into other power, when guaranteeing not to cause switch location to show relay DBJ and switch counterpoint to show relay FBJ and take place wrong excitation, perhaps in switch conversion process, if when taking place crowded trouble such as switch, power failure, broken string, on the basis that guarantees that switch location shows relay DBJ and switch counterpoint to show that relay FBJ in time falls down, the real-time excitation condition between them of homoenergetic judgement.
In addition, the turnout monitoring device provided by the invention further comprises a power acquisition module, and the power acquisition module can comprehensively calculate the running power of the alternating current point switch according to the working voltage and the working current of the alternating current point switch acquired by the action voltage acquisition module so as to monitor the running state of the alternating current point switch by monitoring the running power.
The turnout monitoring device applied to the eight-wire turnout control circuit provided by the invention is suitable for collecting and monitoring related information turnout key information such as three-phase input voltage, three-phase input current, turnout indication voltage and the like of all eight-wire turnout control circuits, and has strong universality.
Based on the content of the above embodiment, as an optional embodiment, the switch monitoring device applied to the eight-wire switch control circuit provided by the invention further includes: a switching value acquisition module;
the switching value acquisition module is used for acquiring the switching value of the action opportunity of a first turnout starting relay in the turnout indication circuit, the position indication switching value (positioning indication switching value for short) of the turnout positioning indication relay and the position indication switching value (reverse indication switching value for short) of the turnout reverse indication relay.
According to the control principle of the eight-wire turnout control circuit, the action of the first turnout starting relay 1DQJ indicates that the turnout action starts, the action of the turnout positioning indicating relay DBJ indicates that the turnout is moved to the positioning, and the action of the turnout reverse position indicating relay FBJ indicates that the turnout is moved to the reverse position.
According to the turnout monitoring device, the action contacts of a first turnout starting relay 1DQJ, a turnout positioning indication relay DBJ and a turnout reverse position indication relay FBJ are acquired through a switching value acquisition module, and the switching value at the action moment, the positioning indication switching value and the reverse position indication switching value are respectively acquired, so that the time from turnout action to positioning can be determined according to the switching value at the action moment and the positioning indication switching value; meanwhile, the switch value can be represented according to the switch value and the reverse position at the action time, and the time from the turnout action to the reverse position is determined.
Meanwhile, the invention can also combine the switch action to the positioning/reverse position opportunity according to the action voltage and action current acquired by the voltage acquisition module and the current acquisition module, and can calculate the running power of the alternating current switch machine when the switch acts.
According to the turnout monitoring device provided by the invention, the switching value acquisition module is additionally arranged, and the input end of the switching value acquisition module is connected to the relevant contact in the combined cabinet, so that the action contact of the relay FBJ can be represented according to the turnout starting relay 1DQJ, the turnout positioning representation relay DBJ and the turnout reversal, the action time of the turnout can be accurately obtained, the running power of an alternating current switch machine during turnout action can be effectively determined, meanwhile, the switching value can be represented according to the action time, the positioning representation switching value and the reversal representation switching value, the turnout action state can be obtained in real time, support is provided for checking the correct action of the turnout, and the driving safety is effectively guaranteed.
Based on the content of the foregoing embodiment, as an optional embodiment, the action voltage collecting module includes: an A phase voltage collector, a B phase voltage collector and a C phase voltage collector;
one input end of the A-phase voltage collector is connected with an X1 loop in the turnout action circuit, and the X1 loop is connected with A of the three-phase input voltage through a group of auxiliary contacts of the first turnout starting relay 1 DQJ;
two input ends of the B-phase voltage collector are respectively connected with an X2 loop and an X4 loop in the turnout action circuit; the X2 loop and the X4 loop are respectively connected with two fixed contacts 112 and 113 of a first group of auxiliary contacts of a second turnout starting relay 2DQJ, a movable contact 111 of the first group of auxiliary contacts of the second turnout starting relay 2DQJ is connected with B of the three-phase input voltage through a first group of auxiliary contacts of a multiple relay 1DQJF of the first turnout starting relay;
two input ends of the C-phase voltage collector are respectively connected with an X3 loop and an X5 loop in the turnout action circuit; the X3 circuit and the X5 circuit are connected to two stationary contacts 122 and 123 of a second set of auxiliary contacts of a second switch actuating relay 2DQJ, respectively, and the movable contact 121 of the second set of auxiliary contacts of the second switch actuating relay 2DQJ is connected to C of the three-phase input voltage through a second set of auxiliary contacts of the multiple relay 1 DQJF.
Fig. 2 is a schematic circuit diagram of a switch monitoring device applied to an eight-wire switch control circuit, as shown in fig. 2, the collection point selection and connection mode of an operation voltage collection module of the switch monitoring device provided by the present invention is as follows:
firstly, according to the circuit structure and the operation principle of the eight-wire turnout control circuit, because an X3 loop and an X5 loop in a branch cabinet are equal in magnitude to a C-phase voltage, an X2 loop and an X4 loop are equal in magnitude to a B-phase voltage, and an X1 loop is equal in magnitude to an A-phase voltage, the input end of an A-phase voltage collector of an action voltage collection module is connected with an X1 loop in the branch cabinet, and an A-phase voltage U-phase voltage of a three-phase input voltage can be read through a voltmetera。
Accordingly, by connecting the two input terminals of the B-phase voltage collector to the X2 loop and the X4 loop in the distribution box, respectively, the B-phase voltage U can be collected when the movable contact 111 of the first set of auxiliary contacts of the second turnout start relay 2DQJ is connected to the stationary contact 112 or the stationary contact 113 thereofb。
In the same way, two input ends of the C-phase voltage collector are connectedConnected to the X3 circuit and the X5 circuit in the distribution box, respectively, the C-phase voltage U can be acquired when the movable contact point 121 of the second set of auxiliary contact points of the second switch starting relay 2DQJ is connected to the static contact point 122 or the static contact point 123 thereofc。
It should be noted that the eight-wire switch control circuit provided by the invention is provided with a switch power-off protector DBQ in order to prevent the motor from being burnt out under the condition of phase failure of a three-phase alternating-current power supply.
Optionally, the DBQ is composed of three current transformers, a bridge rectifier and a protection relay BHJ. The primary side coils of the three current transformers are respectively connected in series in a three-phase alternating current circuit, and the secondary side coils are connected end to end, and after bridge rectification, the output terminals are connected with a protection relay BHJ.
The primary side coils of the three current transformers are respectively connected in series in a three-phase alternating current circuit, the secondary side coils are connected end to end, and after bridge rectification, the output terminal can be connected with a protection relay BHJ.
When the three-phase alternating current power supply supplies power normally, three-phase current flows through a stator winding of the motor, the current transformer works in a magnetic saturation state, third harmonic in secondary side induction current outputs direct current after bridge rectification, BHJ is sucked up due to the fact that the direct current is obtained, and the joint of the BHJ is used as a condition of a turnout control circuit. When the switch is switched to the bottom, the BHJ is restored to fall down due to the disconnection of the three-phase load.
When the three-phase alternating current power supply has an open-phase fault, if the B phase is cut off, A, C two phases are supplied, the line voltage is applied to the primary side of the current transformer, the voltages of the two current transformers on the secondary side are connected in series in a reverse direction and are mutually offset, the bridge rectifier has no output, and the BHJ falls down, so that the 1DQJ circuit and the three-phase alternating current motor circuit are disconnected, and the motor is prevented from being burnt out due to open-phase operation.
The turnout monitoring device of the eight-wire turnout control circuit provided by the invention can respectively collect the three-phase input voltage of the turnout control circuit in real time by using the action voltage collecting module no matter how the action direction of the turnout changes.
Based on the content of the foregoing embodiment, as an optional embodiment, the action current collecting module includes: the phase current collector comprises a phase current collector A, a phase current collector B and a phase current collector C;
the A-phase current collector is used for acquiring input current in the X1 loop through a first current sensor;
the B-phase current collector is used for acquiring input currents in the X2 loop and the X4 loop through a second current sensor;
and the C-phase current collector is used for acquiring input currents in the X3 loop and the X5 loop through a third current sensor.
Specifically, based on the structure and the working principle of the eight-wire turnout control circuit, an X3 loop and an X5 loop in the distribution cabinet are connected to a C-phase power supply, and the currents passing through the X3 loop and the X5 loop are corresponding action currents IcThen, the C-phase current I can be collected when the movable contact point 121 of the second set of auxiliary contact points of the second switch starting relay 2DQJ is connected to the static contact point 122 or the static contact point 123c。
Similarly, the current passing through the X2 loop and the X4 loop is the operation current I of the B-phase power supplybThe current passing through X1 is the operating current I of the A-phase power supplya. The action current acquisition module provided by the invention can acquire the B-phase current I when the movable contact 111 of the first group of auxiliary contacts of the second turnout starting relay 2DQJ is connected to the static contact 112 or the static contact 113 of the movable contactb。
The action current acquisition module can realize the acquisition of the action current of the turnout by acquiring the induced current on the contact circuit cable (I)a、IbAnd Ic) And (4) performing functions.
The turnout monitoring device provided by the invention can respectively acquire the three-phase input current of the turnout control circuit in real time by using the action current acquisition module no matter how the direction of turnout action changes.
Based on the content of the foregoing embodiment, as an optional embodiment, the voltage acquisition module includes: the reverse bit represents a voltage collector FBJ and the positioning represents a voltage collector DBJ;
two input ends of the flip representation voltage collector FBJ are respectively connected with an X7 loop and an X8 loop in the turnout representation circuit and are used for obtaining working voltages FBV-and FBV + of the turnout flip representation relay;
two input ends of the positioning representation voltage collector DBJ are respectively connected with an X6 loop and an X8 loop in the turnout representation circuit and are used for obtaining working voltages DBV & lt- & gt and DBV & lt + & gt of the turnout positioning representation relay;
the switch positioning indication relay DBJ is connected with the X6 loop in series; one end 1 of a coil of the turnout positioning indication relay DBJ is connected with the positive electrode of a first diode Z1, and the other end of the coil is connected with one static contact 132 of a third group of auxiliary contacts of the second turnout starting relay 2 DQJ;
the switch reverse position represents that a relay FBJ is connected with the X7 loop in series; the reverse switch position shows that one end of the coil of the relay FBJ is connected with the cathode of the second diode Z2, and the other end is connected with the other static contact 133 of the third group of auxiliary contacts of the second switch starting relay 2 DQJ;
the movable contact 131 of the third set of auxiliary contacts of the second switch actuating relay 2DQJ is connected with one end 3 representing the secondary of the transformer through the other set of auxiliary contacts of the first switch actuating relay 1 DQJ;
the other end 4 of the secondary of the representing transformer is connected with one end of the X8 loop;
the cathode of the first diode Z1, the anode of the second diode Z2 and the other end of the X8 loop are respectively connected with a three-phase winding of a switch machine.
The primary of the transformer is connected to two ends of a 220V alternating current voltage source respectively.
It should be noted that, the connection mode of the indicating voltage acquisition module provided by the invention fully considers the working principle of the switch indicating circuit in the eight-wire switch control circuit, the switch indicating circuit is composed of two bias relays (such as JPXC-1000 type) of DBJ and FBJ, the switch indicating transformer supplies power, and is finally connected with the automatic switch contact of the alternating current switch machine, after the switch is positioned or reversed, the 1DQJ is demagnetized and falls off, and the switch indicating circuit is connected with the rear contact.
The turnout monitoring device provided by the invention can realize that the turnout is positioned by respectively adopting the suction of a turnout positioning indication relay DBJ by additionally arranging the indication voltage acquisition module and reasonably connecting the indication voltage acquisition module to the relevant contact in the branch cabinet; the switch is reversed to indicate that the switch is reversed by sucking up the relay FBJ.
Meanwhile, when external lines are mixed, because rectifier diodes Z1 and Z2 lose effects, alternating current flowing in the bias relay cannot be sucked up, and false excitation of a switch positioning indication relay DBJ or a switch reverse position indication relay FBJ can be prevented. When an external power supply is mixed in the external line, the mixed power supply cannot form a closed loop due to the adoption of the indication transformer isolation, and the misoperation of a turnout positioning indication relay DBJ or a turnout reverse indication relay FBJ can be prevented.
Further, when the motor idles due to an obstacle on the switch point rail, 1DQJ could not fall down, and the indicating circuit could not be connected; or the switch is squeezed, two groups of contacts of the automatic switch are shifted by the indicating rod to lift the inspection column to be in a middle state and disconnect the indicating circuit, so that the switch positioning indicating relay DBJ or the switch reverse position indicating relay FBJ are both in a falling state to indicate that the switch has a fault, and the switch squeezing alarm circuit is switched on to send out a switch squeezing alarm.
Based on the content of the foregoing embodiment, as an optional embodiment, the power acquisition module is configured to determine the operating power of the ac switch machine according to the three-phase input voltage and the three-phase input current, and specifically includes:
acquiring three-phase input voltage and three-phase input current of a plurality of sampling time points according to a preset sampling period;
respectively calculating the root mean square value of each phase of input voltage acquired at all sampling time points to determine the three-phase average line voltage;
respectively calculating the root mean square value of each phase of input current collected at all sampling time points to determine three-phase average input current;
and calculating the three-phase average line voltage and the three-phase average input current by using a power calculation formula so as to obtain the operating power of the alternating current switch machine.
Optionally, the power acquisition module provided by the present invention may be controlled by a timer, and acquires current data once every 1ms, and stores the current data in a memory capable of storing 60 times of data in a circulating manner, so that the memory section always stores the instantaneous current data within the latest 60ms (3 power frequency periods).
And finally, calculating the root mean square value of the instantaneous current for 60 times when needed, namely firstly solving the sum of squares, then solving the mean value, and finally carrying out root cutting to obtain the effective value of the latest 60 ms. Through the algorithm, ABC three-phase input current can be obtained and recorded as: i isa、Ib、Ic。
Similarly, voltage data are collected once every 1ms, the instantaneous voltage data in the last 60ms are always stored, and when necessary, the root mean square value of 60 groups of data is calculated, so that the line voltages U of AC, BC and CA can be obtainedab、。
Normally, the line voltage of the three lines should be around 380V.
Finally, according to the power formula, the operating power P of the switch machine can be obtained, specifically:
the power acquisition module provided by the invention can calculate the running power of the alternating current switch machine in a root mean square mode according to the three-phase working voltage and the three-phase working current acquired by the action voltage acquisition module and the action current acquisition module at a plurality of sampling time points in real time, and can realize real-time monitoring of the working state of the switch machine.
Based on the content of the above embodiment, as an optional embodiment, an isolation module is connected in series to the input ends of the action voltage acquisition module, the action current acquisition module and the representation voltage acquisition module.
The turnout monitoring device applied to the eight-wire turnout control circuit provided by the invention can realize the following functions by additionally arranging the isolation modules at the input ends of the action voltage acquisition module, the action current acquisition module and the representation voltage acquisition module:
1) isolation function: the function of effectively isolating each input end and the corresponding output end is achieved, the output end circuit and the input end circuit are isolated, and the existing function of the input end circuit is particularly prevented from being influenced by the fault of the output end circuit.
2) The information transfer function: the function of transmitting the information of the input end to the output end completely and accurately is achieved, and the completeness and the accuracy of the transmission of the input information are not affected by the realization of the isolation function.
3) Voltage value integration and output function: the two paths of voltage values with mutually exclusive time dimensions are summed and integrated into one path of voltage value to be output externally.
Fig. 3 is an operation schematic diagram of the power acquisition module and the voltage acquisition module provided by the present invention, and as shown in fig. 3, the power acquisition module is further configured to receive the operation timing switching value of the first turnout start relay, the position indication switching value of the turnout positioning indication relay, and the position indication switching value of the turnout reverse indication relay, which are uploaded by the switching value acquisition module;
determining the positioning time of the alternating current point switch according to the action time switching value of the first turnout starting relay and the position indicating switching value of the turnout positioning indicating relay;
and determining the reverse timing of the alternating current point switch according to the switching value of the action timing of the first turnout starting relay and the switching value of the position representation of the turnout reverse indicating relay.
Based on the eight-wire turnout control circuit principle, a first turnout starting relay 1DQJ indicates that the turnout action starts, a turnout positioning indicating relay DBJ indicates that the turnout is moved to the positioning, and a turnout reverse position indicating relay FBJ indicates that the turnout is moved to the reverse position.
The turnout monitoring device applied to the eight-wire turnout control circuit can confirm the timing of turnout action to positioning by collecting the 1DQJ action contact and the DBJ action contact, confirm the timing of turnout action to reverse position by collecting the 1DQJ action contact and the FBJ action contact, and calculate the operating power of turnout action by combining the collected turnout action voltage and turnout action current.
The invention obtains the running power of the turnout in a short time by predetermining the turnout action time, and can accurately obtain the working state of the alternating current point switch by monitoring the running power.
Based on the content of the above embodiment, as an optional embodiment, the switch monitoring device applied to the eight-wire switch control circuit provided by the invention further includes: a communication output module;
and the communication output module is used for sending the operating power of the alternating current point switch, the working voltage of the turnout positioning indicating relay and the working voltage of the turnout reverse indicating relay to an upper computer.
With reference to fig. 3, the switch monitoring device of the eight-wire switch control circuit provided by the present invention has a function of converting data output by the voltage acquisition module and the power acquisition module into standard communication protocol application data, and outputs the data externally through a network.
Optionally, the power acquisition module and the voltage indication acquisition module may transmit information such as operating power and switch indication voltage obtained by real-time measurement and cloud during switch operation to an upper computer (e.g., station equipment such as a microcomputer monitoring system) through a standard communication protocol (e.g., TCP/IP or RS485), and transmit the information to a maintenance network through the microcomputer monitoring system, so as to implement full-line sharing of related information.
In addition, the turnout monitoring device of the eight-wire turnout control circuit further comprises a power supply module, wherein the power supply module is used for realizing the power supply function of collector equipment, and mainly inputs a 24VDC power supply and converts the input into a power supply of each module in the turnout monitoring device.
Fig. 4 is a schematic flow chart of a switch monitoring method applied to an eight-wire switch control circuit according to the present invention, as shown in fig. 4, which mainly includes, but is not limited to, the following steps:
step 101: collecting three-phase input voltage and three-phase input current in a turnout action circuit of an alternating current switch machine so as to determine the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current;
the three-phase input voltage in the turnout action circuit of the alternating current point switch can be acquired by connecting the input end of the voltage acquisition module and the relevant contact on the acquisition base in the distribution cabinet.
The three-phase input current in the turnout action circuit of the alternating current switch machine can be obtained by utilizing the action current acquisition module and carrying out current measurement on the three-phase alternating current input line in the branch cabinet by virtue of the current transformer.
The operating power of the ac switch machine may be determined according to a power settlement formula of the three-phase ac power, which is not described herein again.
Step 102: acquiring turnout indication voltage of a turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
A group of positioning indicating contacts or a group of reverse indicating contacts of an automatic switch of the alternating current point switch are respectively connected with a turnout indicating circuit, and a turnout positioning indicating relay DBJ is switched on by using the positioning contacts of the automatic switch; and (3) representing the contact by using a reverse position, representing the relay FBJ by using a switch reverse position, and measuring the coil voltage of the switch positioning representation relay DBJ and the switch reverse position representation relay FBJ, so that the switch representation voltage can be obtained.
The turnout monitoring method applied to the eight-wire turnout control circuit provided by the invention is suitable for collecting and monitoring the turnout key information of relevant information such as three-phase input voltage, three-phase input current, turnout indication voltage and the like of all eight-wire turnout control circuits, and has strong universality.
It should be noted that, when the turnout monitoring method provided in the embodiment of the present invention is specifically operated, the turnout monitoring method can be implemented by using the turnout monitoring device described in any of the above embodiments, and details of this embodiment are not described herein.
Fig. 5 is a schematic structural diagram of an electronic device provided in the present invention, and as shown in fig. 5, the electronic device may include: a processor (processor)510, a communication Interface (Communications Interface)520, a memory (memory)530 and a communication bus 540, wherein the processor 510, the communication Interface 520 and the memory 530 communicate with each other via the communication bus 540. Processor 510 may invoke logic instructions in memory 530 to execute a switch monitoring device for use in an eight-wire switch control circuit, the device comprising: collecting three-phase input voltage and three-phase input current in a turnout action circuit of an alternating current switch machine so as to determine the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; acquiring turnout indication voltage of a turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
Furthermore, the logic instructions in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the apparatus according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product including a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions which, when executed by a computer, enable the computer to execute a switch monitoring device applied to an eight-wire switch control circuit provided by each of the above devices, the device including: collecting three-phase input voltage and three-phase input current in a turnout action circuit of an alternating current switch machine so as to determine the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; acquiring turnout indication voltage of a turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
In yet another aspect, the present invention further provides a non-transitory computer readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to execute the switch monitoring device applied to the eight-wire switch control circuit provided in the above embodiments, the device comprising: collecting three-phase input voltage and three-phase input current in a turnout action circuit of an alternating current switch machine so as to determine the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; acquiring turnout indication voltage of a turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the apparatus according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a be applied to eight system switch control circuit's switch monitoring devices which characterized in that includes: the device comprises an action voltage acquisition module, an action current acquisition module, a power acquisition module and a representation voltage acquisition module;
the action voltage acquisition module is used for acquiring three-phase input voltage in a turnout action circuit of the alternating current point switch;
the action current acquisition module is used for acquiring three-phase input current in the turnout action circuit;
the power acquisition module is used for determining the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current;
the indication voltage acquisition module is used for acquiring the turnout indication voltage of the turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
2. The switch monitoring device applied to the eight-wire switch control circuit according to claim 1, further comprising: a switching value acquisition module;
the switch value acquisition module is used for acquiring the switch value of the action opportunity of a first switch starting relay in the switch indication circuit, the switch value of the position indication of the switch positioning indication relay and the switch value of the position indication of the switch reverse position indication relay.
3. The switch monitoring device applied to the eight-wire switch control circuit according to claim 2, wherein the action voltage acquisition module comprises: an A phase voltage collector, a B phase voltage collector and a C phase voltage collector;
one input end of the A-phase voltage collector is connected with an X1 loop in the turnout action circuit, and the X1 loop is connected with A of the three-phase input voltage through a group of auxiliary contacts of the first turnout starting relay;
two input ends of the B-phase voltage collector are respectively connected with an X2 loop and an X4 loop in the turnout action circuit; the X2 loop and the X4 loop are respectively connected with two fixed contacts of a first group of auxiliary contacts of a second turnout starting relay, and movable contacts of the first group of auxiliary contacts of the second turnout starting relay are connected with B of the three-phase input voltage through a first group of auxiliary contacts of a duplex relay of the first turnout starting relay;
two input ends of the C-phase voltage collector are respectively connected with an X3 loop and an X5 loop in the turnout action circuit; the X3 loop and the X5 loop are respectively connected with two fixed contacts of a second group of auxiliary contacts of a second turnout starting relay, and movable contacts of the second group of auxiliary contacts of the second turnout starting relay are connected with the C of the three-phase input voltage through the second group of auxiliary contacts of the compound relay.
4. The switch monitoring device applied to the eight-wire switch control circuit according to claim 3, wherein the action current acquisition module comprises: the phase current collector comprises a phase current collector A, a phase current collector B and a phase current collector C;
the A-phase current collector is used for acquiring input current in the X1 loop through a first current sensor;
the B-phase current collector is used for acquiring input currents in the X2 loop and the X4 loop through a second current sensor;
and the C-phase current collector is used for acquiring input currents in the X3 loop and the X5 loop through a third current sensor.
5. The switch monitoring device applied to the eight-wire switch control circuit according to claim 3, wherein the representation voltage acquisition module comprises: the inverted representation voltage collector and the positioning representation voltage collector;
the two input ends of the reverse-position indicating voltage collector are respectively connected with an X7 loop and an X8 loop in the turnout indicating circuit and are used for acquiring the working voltage of the turnout reverse-position indicating relay;
the two input ends of the positioning indication voltage collector are respectively connected with an X6 loop and an X8 loop in the turnout indication circuit and are used for obtaining the working voltage of the turnout positioning indication relay;
the switch positioning indicating relay is connected with the X6 loop in series; one end of a coil of the turnout positioning indication relay is connected with the anode of the first diode, and the other end of the coil of the turnout positioning indication relay is connected with a static contact of a third group of auxiliary contacts of the second turnout starting relay;
the turnout reverse position indicates that a relay is connected with the X7 loop in series; one end of a coil of the turnout reversal indicating relay is connected with the cathode of a second diode, and the other end of the coil of the turnout reversal indicating relay is connected with another static contact of a third group of auxiliary contacts of the second turnout starting relay;
the movable contact of the third group of auxiliary contacts of the second turnout starting relay is connected with one end of the secondary of the transformer through the other group of auxiliary contacts of the first turnout starting relay;
the other end of the secondary of the representing transformer is connected with one end of the X8 loop;
and the cathode of the first diode, the anode of the second diode and the other end of the X8 loop are respectively connected with a three-phase winding of a switch machine.
6. The switch monitoring device applied to the eight-wire switch control circuit according to claim 1, wherein the power acquisition module is configured to determine the operating power of the ac switch machine according to the three-phase input voltage and the three-phase input current, and specifically comprises:
acquiring three-phase input voltage and three-phase input current of a plurality of sampling time points according to a preset sampling period;
respectively calculating the root mean square value of each phase of input voltage acquired at all sampling time points to determine the three-phase average line voltage;
respectively calculating the root mean square value of each phase of input current collected at all sampling time points to determine three-phase average input current;
and calculating the three-phase average line voltage and the three-phase average input current by using a power calculation formula so as to obtain the operating power of the alternating current switch machine.
7. The switch monitoring device applied to the eight-wire switch control circuit according to claim 1, wherein an isolation module is connected in series with the input ends of the action voltage acquisition module, the action current acquisition module and the representation voltage acquisition module.
8. The switch monitoring device applied to the eight-wire switch control circuit according to claim 2, wherein the power acquisition module is further configured to receive the operation timing switching value of the first switch start relay, the position indication switching value of the switch positioning indication relay and the position indication switching value of the switch reverse position indication relay, which are uploaded by the switching value acquisition module;
determining the positioning time of the alternating current point switch according to the action time switching value of the first turnout starting relay and the position indicating switching value of the turnout positioning indicating relay;
and determining the reverse timing of the alternating current point switch according to the switching value of the action timing of the first turnout starting relay and the switching value of the position representation of the turnout reverse indicating relay.
9. The switch monitoring device applied to the eight-wire switch control circuit according to claim 1, further comprising: a communication output module;
and the communication output module is used for sending the operating power of the alternating current point switch, the working voltage of the turnout positioning indicating relay and the working voltage of the turnout reverse indicating relay to an upper computer.
10. A switch monitoring method applied to an eight-wire switch control circuit, characterized in that based on the switch monitoring device of any one of claims 1 to 9, the following operation steps are executed:
collecting three-phase input voltage and three-phase input current in a turnout action circuit of an alternating current switch machine so as to determine the operating power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current;
acquiring turnout indication voltage of a turnout indication circuit; the switch indication voltage comprises a switch positioning indication relay working voltage and a switch reverse position indication relay working voltage.
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| CN113805560B (en) | 2023-05-23 |
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