CN113805560B - Switch monitoring device and method applied to eight-wire switch control circuit - Google Patents
Switch monitoring device and method applied to eight-wire switch control circuit Download PDFInfo
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- CN113805560B CN113805560B CN202110931502.6A CN202110931502A CN113805560B CN 113805560 B CN113805560 B CN 113805560B CN 202110931502 A CN202110931502 A CN 202110931502A CN 113805560 B CN113805560 B CN 113805560B
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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
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Abstract
The invention provides a turnout monitoring device and method applied to an eight-wire turnout control circuit, wherein the device comprises: the system comprises an action voltage acquisition module, an action current acquisition module, a power acquisition module and a representation voltage acquisition module; the system comprises an action voltage acquisition module and an action current acquisition module, wherein the action voltage acquisition module and the action current acquisition module are used for acquiring three-phase input voltages and three-phase input currents in a turnout action circuit of an alternating current point machine; the power acquisition module determines the running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; the switch indication voltage acquisition module is used for acquiring switch indication voltage of the switch indication circuit, and comprises working voltage of a switch positioning indication relay and working voltage of a switch inversion indication relay. The turnout monitoring device and the turnout monitoring method provided by the invention can be suitable for collecting and monitoring the turnout key information of relevant information such as three-phase input voltage, three-phase input current, turnout representation 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 switch monitoring is an important component in a signal monitoring system in a rail transit line, and mainly realizes the collection and processing of parameters such as switch action voltage, switch action current, running power of an alternating current switch machine, switch indication voltage and the like, and is a main mode and means of switch fault analysis. In domestic track traffic line, mainly five-wire eight-wire switch control circuit is used to implement switch action control and state indication feedback of AC switch machine.
In order to solve the problem of switch circuit faults caused by arc pulling of contacts of a 2DQJ relay in a five-wire eight-wire switch control circuit, the eight-wire switch control circuit of the current alternating current switch machine starts to adopt the eight-wire switch control circuit, and the switch action circuit and the switch indication circuit are separated to overcome the defect.
However, existing acquisition circuits and modules for implementing switch monitoring are only suitable for five-wire switch control circuits, and cannot complete real-time monitoring of switch states controlled by eight-wire switch control circuits.
Disclosure of Invention
The invention provides a turnout monitoring device and a turnout monitoring method applied to an eight-wire turnout control circuit, which are used for solving the technical blank of real-time monitoring of the eight-wire turnout control circuit in the prior art.
In a first aspect, the present invention provides a switch monitoring device for an eight-wire switch control circuit, comprising: the system 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 voltages in a turnout action circuit of the alternating current switch machine; the action current acquisition module is used for acquiring three-phase input currents in the turnout action circuit; the power acquisition module is used for determining the running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; the switch indication voltage acquisition module is used for acquiring switch indication voltage of the switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay.
According to the switch monitoring device applied to the eight-wire switch control circuit provided by the invention, the switch monitoring device further comprises: the switching value acquisition module; the switch value acquisition module is used for acquiring the action time switch value of the first switch starting relay in the switch indicating circuit, the position indicating switch value of the switch positioning indicating relay and the position indicating switch value of the switch inversion indicating relay.
According to the switch monitoring device applied to the eight-wire switch control circuit, the action voltage acquisition module comprises: the system comprises an A-phase voltage collector, a B-phase voltage collector and a C-phase voltage collector; one input end of the phase A voltage collector is connected with an X1 loop in the turnout action circuit, and the X1 loop is connected with phase A of the three-phase input voltage through a group of auxiliary contacts of the first switch 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 static 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 the B of the three-phase input voltage through the first group of auxiliary contacts of a compound 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 static contacts of a second group of auxiliary contacts of a second turnout starting relay, and a movable contact of the second group of auxiliary contacts of the second turnout starting relay is connected with the C of the three-phase input voltage through the second group of auxiliary contacts of the compound relay.
According to the switch monitoring device applied to the eight-wire switch control circuit, the action current acquisition module comprises: a phase A current collector, a phase B current collector and a phase C current collector; the phase A 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, the representation voltage acquisition module comprises: the inversion represents the voltage collector and the positioning represents the voltage collector; the two input ends of the inversion representing voltage collector are respectively connected with an X7 loop and an X8 loop in the turnout representing circuit and are used for obtaining the working voltage of the turnout inversion representing relay; the two input ends of the positioning representation voltage collector are respectively connected with an X6 loop and an X8 loop in the turnout representation circuit and are used for obtaining the working voltage of the turnout positioning representation relay; the turnout positioning indicating relay is connected in series with the X6 loop; one end of a coil of the turnout positioning indicating relay is connected with the positive electrode of the first diode, and the other end of the coil of the turnout positioning indicating relay is connected with a static contact of a third group of auxiliary contacts of the second turnout starting relay; the turnout inversion represents that a relay is connected in series with the X7 loop; one end of a coil of the turnout inversion indicating relay is connected with the cathode of the second diode, and the other end of the coil of the turnout inversion indicating relay is connected with the other static contact of the 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 representation transformer is connected with one end of the X8 loop; the negative electrode of the first diode, the positive electrode of the second diode and the other end of the X8 loop are respectively connected with a three-phase winding of the 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 running 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: according to a preset sampling period, three-phase input voltages and three-phase input currents at a plurality of sampling time points are obtained; respectively calculating root mean square values of the input voltages of each phase acquired at all sampling time points to determine three-phase average line voltages; respectively calculating root mean square values of each phase of input current acquired 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 to obtain the running power of the alternating current switch machine.
According to the switch monitoring device applied to the eight-wire switch control circuit, the input ends of the action voltage acquisition module, the action current acquisition module and the representation voltage acquisition module are all connected in series with an isolation module.
According to the switch monitoring device applied to the eight-wire switch control circuit, the power acquisition module is further used for receiving the action time switching value of the first switch starting relay, the position indication switching value of the switch positioning indication relay and the position indication switching value of the switch inversion indication relay, which are uploaded by the switching value acquisition module; determining the positioning time of the alternating current switch machine according to the switching value of the action time of the first switch starting relay and the switching value of the position indication relay of the switch positioning indication relay; and determining the reversing time of the alternating current switch machine according to the action time switching value of the first switch starting relay and the position indication switching value of the turnout reversing indication relay.
According to the switch monitoring device applied to the eight-wire switch control circuit provided by the invention, the switch monitoring device further comprises: a communication output module; and the communication output module is used for transmitting the running power of the alternating current switch machine, the working voltage of the switch positioning indicating relay and the working voltage of the switch inversion indicating relay to the upper computer.
In a second aspect, the present invention further provides a switch monitoring method applied to an eight-wire switch control circuit, which comprises the following operation steps based on any switch monitoring device: 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 running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; collecting switch indication voltage of a switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay.
In a third aspect, the present invention provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the switch monitoring method as described above applied to an eight-wire switch control circuit when the program is executed.
In a fourth aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a switch monitoring method as described above for an eight wire switch control circuit.
The turnout monitoring device and method applied to the eight-wire turnout control circuit provided by the invention can be suitable for collecting and monitoring relevant information turnout key information such as three-phase input voltage, three-phase input current, turnout representation voltage and the like of all the eight-wire turnout control circuit, and has strong universality.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a switch monitor applied to an eight-wire switch control circuit according to the present invention;
fig. 2 is a schematic circuit diagram of a switch monitor device applied to an eight-wire switch control circuit according to the present invention;
FIG. 3 is a schematic diagram illustrating the operation of the power harvesting module provided by the present invention;
FIG. 4 is a schematic flow chart of a switch monitoring method applied to an eight-wire switch control circuit;
fig. 5 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that in the description of 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 one … …" does not exclude the presence of other like elements in a process, apparatus, article or device comprising the element. The orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and are not indicative or implying that the apparatus or elements in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The switch monitoring device and device applied to the eight-wire switch control circuit according to the embodiments of the present invention are described below with reference to fig. 1 to 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, mainly including:
the system 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 voltages in a turnout action circuit of the alternating current switch machine;
the action current acquisition module is used for acquiring three-phase input currents in the turnout action circuit;
the power acquisition module is used for determining the running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current;
the switch indication voltage acquisition module is used for acquiring switch indication voltage of the switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay.
The input ends of the action voltage acquisition module and the representation voltage acquisition module are connected to related joints on an acquisition base in the branching cabinet, so that three-phase input voltages (namely working voltages of an alternating current switch) and switch representation voltages of an eight-wire switch control circuit (hereinafter simply referred to as a switch control circuit) are acquired; and the action current collection module is used for collecting three-phase input current (namely working current of the alternating current switch machine) from the branch cabinet.
A group of positioning indicating contacts or a group of inversion indicating contacts of an automatic switch of an alternating current switch machine are respectively connected with a switch indicating circuit so as to reflect the real-time position of a switch into a remote signal building, and the method can be as follows:
The switch positioning indicating relay DBJ is connected by using the positioning contact of the automatic switch; the contact is indicated by the inversion, and the switch inversion is turned on to indicate the relay FBJ.
In the switch indication circuit, the switch position indication relay DBJ and the switch inversion indication relay FBJ are used to indicate the switch position, so as to distinguish the shape of the route and participate in various important interlocking relations, and the route indication light band is formed on the control console to indicate the switch position.
Therefore, the switch indication circuit is a safety circuit, and whether the operation of the switch indication circuit is normal or not is directly related to driving safety, and the requirement of fault-safety is met, so that the invention monitors the switch indication voltage of the switch indication circuit in real time on the basis of monitoring the operating voltage and the operating current of the alternating current switch machine, namely, the invention provides monitoring on the operating voltage of the switch positioning indication relay and the operating voltage of the switch inversion indication relay, so as to comprehensively judge the real-time position of the switch.
Specifically, only one switch can be used for indicating that the suction of the relay reflects a certain position of the switch, and the two positions of the switch are respectively indicated without adopting the suction and the falling of the switch for indicating that the relay DBJ is sucked for indicating that the switch is positioned; the suck-up of the relay FBJ is indicated by the switch inversion indicating that the switch is in the inversion.
Through the real-time monitoring to the switch representing relay, when the outside line takes place to mix the line or mix other power, guaranteeing not to cause switch location representing relay DBJ and switch reverse position representing relay FBJ to take place wrong excitation, perhaps in the switch conversion process, if take place trouble such as crowding trouble, power failure, broken line, on guaranteeing switch location representing relay DBJ and switch reverse position representing relay FBJ and in time the real-time excitation condition of whereabouts of both on the basis, the accurate judgement.
In addition, the turnout monitoring device provided by the invention further comprises a power acquisition module, and the operating power of the alternating current switch machine can be comprehensively calculated according to the operating voltage and the operating current of the alternating current switch machine acquired by the action voltage acquisition module, so that the operating state of the alternating current switch machine can be monitored through monitoring the operating power.
The turnout monitoring device applied to the eight-wire turnout control circuit provided by the invention can be suitable for collecting and monitoring relevant information turnout key information such as three-phase input voltage, three-phase input current, turnout representation voltage and the like of all the eight-wire turnout control circuit, and has strong universality.
Based on the foregoing embodiment, as an optional embodiment, the switch monitoring device applied to the eight-wire switch control circuit provided by the present invention further includes: the switching value acquisition module;
The switch value acquisition module is used for acquiring the action time switch value of the first switch starting relay in the switch indicating circuit, the position indicating switch value of the switch positioning indicating relay (short for positioning indicating switch value) and the position indicating switch value of the switch inversion indicating relay (short for inversion indicating switch value).
According to the control principle of the eight-line turnout control circuit, the action of the first turnout starting relay 1DQJ indicates that turnout action starts to start, the turnout positioning indicating relay DBJ action indicates that turnout has been moved to positioning, and the turnout inversion indicating relay FBJ action indicates that turnout has been moved to inversion.
According to the turnout monitoring device provided by the invention, the switch quantity acquisition module is used for acquiring the action contacts of the first turnout starting relay 1DQJ, the turnout positioning indicating relay DBJ and the turnout inversion indicating relay FBJ, and respectively acquiring the action time switch quantity, the positioning indicating switch quantity and the inversion indicating switch quantity, so that the time from turnout action to positioning can be determined according to the action time switch quantity and the positioning indicating switch quantity; meanwhile, the moment of the turnout from the action to the inversion can be determined according to the action moment switching value and the inversion representation switching value.
Meanwhile, the invention can also calculate the running power of the AC switch machine when the turnout acts by combining the moment from the turnout acts to the positioning/reversing according to the action voltage and the action current acquired by the voltage acquisition module and the current acquisition module.
According to the switch monitoring device provided by the invention, the switch quantity acquisition module is additionally arranged, and the input end of the switch quantity acquisition module is connected to the relevant contact point in the combined cabinet, so that the moment of switch action can be accurately known according to the switch starting relay 1DQJ, the switch positioning indicating relay DBJ and the switch inversion indicating relay FBJ, the running power of the alternating current switch machine during switch action can be effectively determined, meanwhile, the switch action state can be obtained in real time according to the switch quantity of the action moment, the positioning indicating switch quantity and the inversion indicating switch quantity, support is provided for verifying the correct action of the switch, and the driving safety is effectively ensured.
Based on the foregoing embodiments, as an optional embodiment, the action voltage acquisition module includes: the system comprises an A-phase voltage collector, a B-phase voltage collector and a C-phase voltage collector;
one input end of the phase A voltage collector is connected with an X1 loop in the turnout action circuit, and the X1 loop is connected with phase A of the three-phase input voltage through a group of auxiliary contacts of the first switch 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 static contacts 112 and 113 of the first group of auxiliary contacts of the second turnout starting relay 2DQJ, the movable contact 111 of the first group of auxiliary contacts of the second turnout starting relay 2DQJ is connected with the B of the three-phase input voltage through the first group of auxiliary contacts of the duplex 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 loop and the X5 loop are respectively connected with two static contacts 122 and 123 of the second auxiliary contact group of the second turnout starting relay 2DQJ, and the movable contact 121 of the second auxiliary contact group of the second turnout starting relay 2DQJ is connected with the C of the three-phase input voltage through the second auxiliary contact group of the duplex relay 1 DQJF.
Fig. 2 is a schematic circuit diagram of a switch monitoring device applied to an eight-wire switch control circuit, and as shown in fig. 2, a collection point selection and connection mode of an action voltage collection module of the switch monitoring device provided by the invention is as follows:
Firstly, according to the circuit structure and operation principle of the eight-wire turnout control circuit, because the X3 loop and the X5 loop in the branching cabinet are equal to the C-phase voltage, the X2 loop and the X4 loop are equal to the B-phase voltage, and the X1 loop is equal to the A-phase voltage, the input end of the A-phase voltage collector of the action voltage collecting module is connected with the X1 loop in the branching cabinet, and the A-phase voltage U of the three-phase input voltage can be read through a voltmeter a 。
Correspondingly, two input ends of the B-phase voltage collector are respectively connected to an X2 loop and an X4 loop in the junction box, so that the B-phase voltage U can be collected when the movable contact 111 of the first group of auxiliary contacts of the second turnout starting relay 2DQJ is connected to the fixed contact 112 or the fixed contact 113 b 。
Similarly, two input ends of the C-phase voltage collector are respectively connected to an X3 loop and an X5 loop in the junction box, so that the C-phase voltage U can be collected when the movable contact 121 of the second group of auxiliary contacts of the second turnout starting relay 2DQJ is connected to the fixed contact 122 or the fixed contact 123 c 。
The invention provides an eight-wire turnout control circuit, which is provided with a turnout power-off protector DBQ in order to prevent a motor from being burnt out under the condition of phase failure of a three-phase alternating current power supply.
Alternatively, the DBQ is composed of three current transformers, a bridge rectifier and a protective relay BHJ. The primary coils of the three current transformers are respectively connected in series in the three-phase alternating current circuit, the secondary coils are connected end to end, and after bridge rectification, the output terminals are connected with the protection relay BHJ.
The primary coils of the three current transformers are respectively connected in series in the three-phase alternating current circuit, the secondary coils are connected end to end, and after bridge rectification, the output terminals can be connected with the protection relay BHJ.
When the three-phase alternating current power supply supplies power normally, three-phase current in the motor stator winding flows through, 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 direct current, and the junction of the BHJ is used as the condition of a turnout control circuit. When the switch is turned to the bottom, the BHJ resumes falling due to the three-phase load being off.
When the three-phase alternating current power supply fails, if the B phase is powered off, A, C two phases are powered, the line voltage is added to the primary side of the current transformer, the voltages of the two current transformers at the secondary side are reversely connected in series and offset each other, the bridge rectifier does not output, the BHJ falls down, and therefore the 1DQJ circuit and the three-phase alternating current motor circuit are disconnected, and the motor is prevented from being burnt out due to the phase failure operation.
The turnout monitoring device of the eight-wire turnout control circuit provided by the invention can respectively collect three-phase input voltages of the turnout control circuit in real time by utilizing the action voltage collection module no matter how the direction of turnout action changes.
Based on the foregoing embodiments, as an optional embodiment, the action current collecting module includes: a phase A current collector, a phase B current collector and a phase C current collector;
the phase A 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 working principle of the eight-wire turnout control circuit, an X3 loop and an X5 loop in the branching cabinet are connected to a C-phase power supply, and the current passing through the X3 loop and the X5 loop is the corresponding action current I c The movable contact 121 of the second auxiliary contact set of the second switch starting relay 2DQJ can be connected to the stationary contact 122 or the stationary contact 123 Can collect C-phase electric current I c 。
Similarly, the current passing through the X2 loop and the X4 loop is the action current I of the B-phase power supply b The current passing through X1 is the action current I of the A-phase power supply a . The action current acquisition module provided by the invention can acquire the B-phase current I no matter 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 thereof b 。
The action current collection module can realize the collection of the action current of the turnout by collecting the induction current on the contact circuit cable (I) a 、I b And I c ) Function.
The turnout monitoring device provided by the invention can respectively collect three-phase input current of the turnout control circuit in real time by utilizing the action current collection module no matter how the direction of turnout action changes.
Based on the foregoing embodiments, as an alternative embodiment, the voltage acquisition module includes: the inversion represents the voltage collector FBJ and the positioning represents the voltage collector DBJ;
the two input ends of the switch representing voltage collector FBJ are respectively connected with an X7 loop and an X8 loop in the switch representing circuit and are used for obtaining working voltages FBV-and FBV+;
The 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-and DBV+;
the turnout positioning indicating relay DBJ is connected with the X6 loop in series; one end 1 of the coil of the switch positioning indicating relay DBJ is connected with the anode of the first diode Z1, and the other end is connected with a fixed contact 132 of the third group of auxiliary contacts of the second switch starting relay 2 DQJ;
the turnout inversion represents that a relay FBJ is connected in series with the X7 loop; one end of a coil of the turnout inversion indicating relay FBJ is connected with the cathode of the second diode Z2, and the other end of the coil is connected with the other stationary contact 133 of the third group of auxiliary contacts of the second turnout starting relay 2 DQJ;
the movable contact 131 of the third set of auxiliary contacts of the second switch starting 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 starting relay 1 DQJ;
the other end 4 of the secondary of the representation transformer is connected with one end of the X8 loop;
the negative electrode of the first diode Z1, the positive electrode of the second diode Z2 and the other end of the X8 loop are respectively connected with a three-phase winding of the switch machine.
The primary of the transformer is connected to two ends of the 220V alternating current voltage source respectively.
The invention provides a wiring mode for representing a voltage acquisition module, fully considers the working principle of a turnout representing circuit in an eight-wire turnout control circuit, consists of two polarized relays (such as JPXC-1000 type) of DBJ and FBJ, is powered by a turnout representing transformer, is finally connected with an automatic switch contact of an alternating current switch machine, and is switched to be positioned or reversed, 1DQJ is lost in a magnetic loss mode and is connected with the turnout representing circuit by a rear contact.
Therefore, the turnout monitoring device provided by the invention can realize that the turnout is positioned by adopting the turnout positioning indication relay DBJ to suck and indicate the turnout through adding the indication voltage acquisition module and reasonably connecting the turnout positioning indication relay DBJ to the related contact in the junction box; the suck-up of the relay FBJ is indicated by the switch inversion indicating that the switch is in the inversion.
Meanwhile, when the external lines are mixed, the rectifier diodes Z1 and Z2 lose the function, so that the alternating current flowing in the polarized relay can not be sucked up, and the wrong excitation of the turnout positioning indicating relay DBJ or the turnout inversion indicating relay FBJ can be prevented. When external power is mixed in, the mixed power cannot form a closed loop due to the adoption of the indication transformer for isolation, and the misoperation of the switch positioning indication relay DBJ or the switch inversion indication relay FBJ can be prevented.
Further, when the switch point rail has an obstacle to idle the motor, 1DQJ cannot fall, so that the indication circuit cannot be switched on; or the turnout is squeezed, the two groups of contacts of the automatic switch are shifted by the indicating rod to lift the checking column to be in an intermediate state so as to disconnect the indicating circuit, so that the turnout positioning indicating relay DBJ or the turnout inversion indicating relay FBJ are in a falling state, the turnout is indicated to be in a fault, and the turnout squeezing alarm circuit is connected to send out turnout squeezing alarm.
Based on the foregoing embodiments, as an optional embodiment, the power collecting module is configured to determine, according to the three-phase input voltage and the three-phase input current, an operating power of the ac switch machine, and specifically includes:
according to a preset sampling period, three-phase input voltages and three-phase input currents at a plurality of sampling time points are obtained;
respectively calculating root mean square values of the input voltages of each phase acquired at all sampling time points to determine three-phase average line voltages;
respectively calculating root mean square values of each phase of input current acquired 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 to obtain the running power of the alternating current switch machine.
Optionally, the power acquisition module provided by the invention can be controlled by a timer, acquires current data once every 1ms, and circularly stores the current data in a memory capable of storing 60 data, so that the memory section always stores instantaneous current data in the last 60ms (3 power frequency periods).
Finally, according to the root mean square value of the instantaneous current of 60 times, namely firstly square sum, average value and last root opening, the effective value of 60ms is obtained. By the algorithm, the ABC three-phase input current can be obtained and is recorded as: i a 、I b 、I c 。
Similarly, voltage data is collected once every 1ms, instantaneous voltage data in the last 60ms is always stored, and when needed, root mean square values of 60 groups of data are calculated, so that line voltages U of AC, BC and CA can be obtained ab 、。
Normally, the three-way line voltage should be around 380V.
Finally, according to the power formula, the running 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 foregoing embodiments, 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 switch monitoring device applied to the eight-wire switch control circuit provided by the invention can realize the following functions by additionally arranging the isolation module 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 input end circuit has the function of effectively isolating each input end from the corresponding output end, realizes the isolation of the output end circuit from the input end circuit, and particularly avoids the influence of the faults of the output end circuit on the existing functions of the input end circuit.
2) Information transfer function: the system has the function of completely and accurately transmitting the information of the input end to the output end, and the integrity and the accuracy of the transmission of the input information are not affected by the realization of the isolation function.
3) Voltage value integration output function: the voltage value integrating device is capable of integrating two paths of voltage values into one path of voltage value for external output.
Fig. 3 is a schematic diagram of the operation of the power collecting module and the voltage collecting module provided by the invention, as shown in fig. 3, the power collecting module is further configured to receive the action time switching value of the first switch starting relay, the switch position indicating switching value of the switch positioning indicating relay and the switch inversion indicating switching value of the switch inversion indicating relay uploaded by the switching value collecting module;
Determining the positioning time of the alternating current switch machine according to the switching value of the action time of the first switch starting relay and the switching value of the position indication relay of the switch positioning indication relay;
and determining the reversing time of the alternating current switch machine according to the action time switching value of the first switch starting relay and the position indication switching value of the turnout reversing indication relay.
Based on the principle of an eight-wire switch control circuit, the first switch starting relay 1DQJ indicates that the switch starts to operate, the switch positioning indicating relay DBJ indicates that the switch has operated to be positioned, and the switch reversing indicating relay FBJ indicates that the switch has operated to be reversed.
The switch monitoring device applied to the eight-wire switch control circuit provided by the invention can confirm the time from switch action to positioning by collecting 1DQJ and DBJ action joints, can confirm the time from switch action to inversion by collecting 1DQJ and FBJ action joints, and can calculate the running power during switch action by combining the collected switch action voltage and switch action current.
The invention can obtain the operating power in a short time when the turnout acts by predetermining the turnout action time, and can accurately obtain the working state of the AC switch machine by monitoring the operating power.
Based on the foregoing embodiment, as an optional embodiment, the switch monitoring device applied to the eight-wire switch control circuit provided by the present invention further includes: a communication output module;
and the communication output module is used for transmitting the running power of the alternating current switch machine, the working voltage of the switch positioning indicating relay and the working voltage of the switch inversion indicating relay to the upper computer.
Referring to fig. 3, the switch monitor of the eight-wire switch control circuit provided by the invention has the function of converting the data output by the voltage acquisition module and the power acquisition module into standard communication protocol application data and outputting the data outwards in a network mode.
Optionally, the power acquisition module and the representation voltage acquisition module can transmit the information such as running power and turnout representation voltage obtained by real-time measurement and cloud to an upper computer (such as a microcomputer monitoring system and other station equipment) through a standard communication protocol (such as TCP/IP or RS 485), and transmit the information to a maintenance network through the microcomputer monitoring system, so that full-line sharing of related information is realized.
In addition, the switch monitoring device of the eight-wire switch control circuit provided by the invention further comprises a power supply module for realizing the power supply function of the collector equipment, wherein the power supply module is mainly used for inputting 24VDC power and converting and outputting the 24VDC power into the power supply of each module in the switch monitoring device.
Fig. 4 is a flow chart of a switch monitoring method applied to an eight-wire switch control circuit, as shown in fig. 4, mainly including but 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 running 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 switch machine can be collected through connecting the input ends of the representation voltage collection module and the related connection points on the collection base in the branching cabinet.
The three-phase input current in the turnout action circuit of the AC switch machine can be obtained by utilizing an action current acquisition module and carrying out current measurement on the three-phase AC input line in the line splitting cabinet by means of a current transformer.
The operation 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.
Step 102: collecting switch indication voltage of a switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay.
A group of positioning indicating contacts or a group of inversion indicating contacts of an automatic switch of an alternating current switch machine are respectively connected with a turnout indicating circuit, and the positioning contacts of the automatic switch are used for connecting a turnout positioning indicating relay DBJ; and when the contacts are represented by the inversion, the switch inversion representing relay FBJ is connected, and the switch representing voltage can be obtained by measuring the coil voltage of the switch positioning representing relay DBJ and the switch inversion representing relay FBJ.
The turnout monitoring method applied to the eight-wire turnout control circuit provided by the invention can be suitable for collecting and monitoring relevant information turnout key information such as three-phase input voltage, three-phase input current, turnout representation voltage and the like of all the eight-wire turnout control circuit, and has strong universality.
It should be noted that, in a specific operation, the switch monitoring method provided by the embodiment of the present invention may be implemented by using the switch monitoring device described in any of the foregoing embodiments, which is not described in detail in this embodiment.
Fig. 5 is a schematic structural diagram of an electronic device according to the present invention, and as shown in fig. 5, the electronic device may include: processor 510, communication interface (Communications Interface) 520, memory 530, and communication bus 540, wherein processor 510, communication interface 520, memory 530 complete communication with each other through communication bus 540. Processor 510 may invoke logic instructions in memory 530 to execute a switch monitoring device for use with 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 running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; collecting switch indication voltage of a switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay.
Further, the logic instructions in the memory 530 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to execute all or part of the steps of the apparatus described in 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, are capable of executing the switch monitoring apparatus provided by the above apparatus for use in an eight-wire switch control circuit, the apparatus 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 running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; collecting switch indication voltage of a switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay.
In yet another aspect, the present invention provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the switch monitoring apparatus provided in the above embodiments and applied to an eight-wire switch control circuit, the apparatus 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 running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current; collecting switch indication voltage of a switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the embodiments or some parts of the described embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. Switch monitoring device for eight system switch control circuit, characterized in that includes: the system 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 voltages in a turnout action circuit of the alternating current switch machine;
the action current acquisition module is used for acquiring three-phase input currents in the turnout action circuit;
the power acquisition module is used for determining the running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current;
the switch indication voltage acquisition module is used for acquiring switch indication voltage of the switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay;
the representation voltage acquisition module comprises: the inversion represents the voltage collector and the positioning represents the voltage collector;
the two input ends of the inversion representing voltage collector are respectively connected with an X7 loop and an X8 loop in the turnout representing circuit and are used for obtaining the working voltage of the turnout inversion representing relay;
The two input ends of the positioning representation voltage collector are respectively connected with an X6 loop and an X8 loop in the turnout representation circuit and are used for obtaining the working voltage of the turnout positioning representation relay;
the turnout positioning indicating relay is connected in series with the X6 loop; one end of a coil of the turnout positioning indicating relay is connected with the anode of the first diode, and the other end of the coil of the turnout positioning indicating relay is connected with a static contact of a third group of auxiliary contacts of the second turnout starting relay;
the turnout inversion represents that a relay is connected in series with the X7 loop; one end of a coil of the turnout inversion indicating relay is connected with the cathode of the second diode, and the other end of the coil of the turnout inversion indicating relay is connected with the other static contact of the 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 representation transformer is connected with one end of the X8 loop;
the negative electrode of the first diode, the positive electrode of the second diode and the other end of the X8 loop are respectively connected with a three-phase winding of the switch machine.
2. The switch monitor device for an eight-wire switch control circuit of claim 1, further comprising: the switching value acquisition module;
the switch value acquisition module is used for acquiring the action time switch value of the first switch starting relay in the switch indicating circuit, the position indicating switch value of the switch positioning indicating relay and the position indicating switch value of the switch inversion indicating relay.
3. The switch monitor for an eight-wire switch control circuit of claim 2, wherein said action voltage acquisition module comprises: the system comprises an A-phase voltage collector, a B-phase voltage collector and a C-phase voltage collector;
one input end of the phase A voltage collector is connected with an X1 loop in the turnout action circuit, and the X1 loop is connected with phase A of the three-phase input voltage through a group of auxiliary contacts of the first switch 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 static 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 the B of the three-phase input voltage through the first group of auxiliary contacts of a compound 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 static contacts of a second group of auxiliary contacts of a second turnout starting relay, and a movable contact of the second group of auxiliary contacts of the second turnout starting relay is connected with the C of the three-phase input voltage through the second group of auxiliary contacts of the compound relay.
4. The switch monitor applied to an eight-wire switch control circuit according to claim 3, wherein said action current collection module comprises: a phase A current collector, a phase B current collector and a phase C current collector;
the phase A 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 an 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:
According to a preset sampling period, three-phase input voltages and three-phase input currents at a plurality of sampling time points are obtained;
respectively calculating root mean square values of the input voltages of each phase acquired at all sampling time points to determine three-phase average line voltages;
respectively calculating root mean square values of each phase of input current acquired 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 to obtain the running power of the alternating current switch machine.
6. The switch monitor for eight-wire switch control circuit of claim 1, wherein an isolation module is connected in series with the input ends of said action voltage acquisition module, said action current acquisition module and said representation voltage acquisition module.
7. 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 an action timing switching value of the first switch starting relay, a position indication switching value of the switch positioning indication relay and a position indication switching value of the switch inversion indication relay uploaded by the switching value acquisition module;
Determining the positioning time of the alternating current switch machine according to the switching value of the action time of the first switch starting relay and the switching value of the position indication relay of the switch positioning indication relay;
and determining the reversing time of the alternating current switch machine according to the action time switching value of the first switch starting relay and the position indication switching value of the turnout reversing indication relay.
8. The switch monitor device for an eight-wire switch control circuit of claim 1, further comprising: a communication output module;
and the communication output module is used for transmitting the running power of the alternating current switch machine, the working voltage of the switch positioning indicating relay and the working voltage of the switch inversion indicating relay to the upper computer.
9. A switch monitoring method applied to an eight-wire switch control circuit, characterized by being based on the switch monitoring device of any one of claims 1 to 8, to perform 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 running power of the alternating current switch machine according to the three-phase input voltage and the three-phase input current;
Collecting switch indication voltage of a switch indication circuit; the switch indication voltage comprises the working voltage of a switch positioning indication relay and the working voltage of a switch inversion indication relay.
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| CN114384305A (en) * | 2021-12-19 | 2022-04-22 | 通号万全信号设备有限公司 | Switch action current detection system and method |
| CN115009322B (en) * | 2022-07-01 | 2024-01-19 | 中铁电气化局集团有限公司 | Compound intelligent turnout test circuit and multi-machine control tester |
| CN115384587A (en) * | 2022-08-02 | 2022-11-25 | 卡斯柯信号有限公司 | Fault analysis method and system applied to eight-wire turnout action and indication circuit |
| CN116859170B (en) * | 2023-09-01 | 2024-06-28 | 兰州大成铁路信号股份有限公司 | Full-electronic execution unit five-wire turnout module representation function testing device and method |
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