CN112053870A - Time detection system, device and method for time relay of medium voltage distribution board - Google Patents
Time detection system, device and method for time relay of medium voltage distribution board Download PDFInfo
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- CN112053870A CN112053870A CN202010748242.4A CN202010748242A CN112053870A CN 112053870 A CN112053870 A CN 112053870A CN 202010748242 A CN202010748242 A CN 202010748242A CN 112053870 A CN112053870 A CN 112053870A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser
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Abstract
The invention discloses a time detection system, a device and a method for a time relay of a medium voltage distribution board, wherein the system comprises the medium voltage distribution board device and the time detection device, and the time detection device comprises a special interface, a power supply, an air circuit breaker, a controller and a time schedule; the gear selection signal is transmitted to the time relay assembly through the special interface and the distribution board female plug in sequence, so that the time relay assembly selects a time relay to be tested according to the gear selection signal; the power switch signal is transmitted to the time relay assembly through the controller, the special interface and the distribution board female plug, and the time relay to be tested responds, so that the time schedule detects response time. According to the time detection system, the time detection device and the time detection method for the time relay of the medium-voltage distribution board, the time relay to be detected is selected through the gear selection signal, and the on-off of the time relay to be detected is controlled through the power switch signal, so that the calibration of the time relay is realized.
Description
Technical Field
The invention relates to the technical field of nuclear power electrical control circuits, in particular to a time detection system, a time detection device and a time detection method for a time relay of a medium voltage distribution board.
Background
According to the nuclear power station maintenance requirement, 4 time relays of the McSet medium voltage distribution board need to be verified. The traditional checking method includes 3 types:
1. TIME relay is dismantled, and the off-line is switched on and is cut off the power supply verification, adopts the TIME200 timetable to TIME, but because of TIME relay uses to hold the spring tightly fixed, dismantles the difficulty, causes TIME relay to damage moreover easily to after the installation relay, there is contact failure in the base of relay contact pin and relay often appears, because of the relay has accomplished the verification, can't verify the contact reliably.
2. The time relay is not disassembled, the disassembly is carried out in a wire disassembling mode, however, due to the fact that base wires of each relay are quite multiple, 9 wires exist in each base, and the plugging work of 396 times of wiring needs to be completed in one overhaul. The risk of people with wiring errors is high, the workload is huge, and the people easily make mistakes.
3. And the wiring verification is carried out on the relay base terminal without disassembling the relay or disassembling the wire. However, this method requires very few connecting portions without disconnecting the wires, which makes the connection very difficult and time and labor consuming, and also has a risk of wrong connection because the terminal number is blocked due to interference of non-disconnecting the wires. After the verification is completed, the normal wiring is easy to drop off by mistake when the wiring is removed, so that the abnormity is caused.
No matter what kind of mode is adopted to three kinds above, all need external power supply, upper distribution panel cabinet needs the ladder to go on, because the space on scene is narrow and small, personnel are crowded, lead to three kinds of maintenance modes to other overhauls on the scene influence great, other maintenance work of distribution panel can't go on in step, have great influence to the maintenance time limit for a project of distribution panel.
The traditional measuring method has the following defects:
1. the relay is damaged or the normal wiring is abnormal due to greater human error risk;
2. the method has the advantages that a large space is occupied, the relay interval is narrow, the detection is extremely inconvenient, the workload is large, a large construction period is wasted, and the overhaul construction period of the distribution board is greatly influenced;
3. at least two persons are needed to be matched, one person can wire on the ladder, and the other person can hold the ladder or carry out other matching work.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an improved time detection system, device and method for a medium voltage distribution board time relay, aiming at the above defects.
The technical scheme adopted by the invention for solving the technical problems is as follows: the time detection system for the time relay of the medium-voltage distribution board comprises a medium-voltage distribution board device and a time detection device which are connected with each other;
the medium voltage distribution panel device comprises a distribution panel female plug and a time relay assembly which are connected with each other, wherein the time relay assembly comprises at least four different types of time relays;
the time detection device comprises
The special interface is used for connecting with a distribution board female plug;
a power source;
the air circuit breaker is connected with the power supply and is used for selectively outputting a power supply switching signal so as to switch on or off the power supply;
the controller is connected with the air circuit breaker and the special interface and is used for selectively outputting gear selection signals;
the time schedule is connected with the controller and the special interface and is used for detecting the response time of a time relay to be measured;
the time relay assembly is used for selecting a time relay to be tested from at least four different types of time relays according to the gear selection signal; the power switch signal is transmitted to the time relay assembly through the controller, the special interface and the distribution board female plug, and the time relay to be tested responds according to the on-off of the power switch signal, so that the time schedule detects the response time.
Preferably, the time relay assembly includes a signal receiving unit and a signal responding unit;
the signal receiving unit is used for receiving a power switch signal and a gear selection signal and comprises a time relay to be tested;
the signal response unit is connected with the time schedule and comprises a to-be-tested delay switch corresponding to the to-be-tested time relay;
the signal receiving unit selects the time relay to be tested according to the gear selection signal, and the time relay to be tested selectively carries out excitation or demagnetization according to the on-off of the power switch signal, so that the time delay switch to be tested is selectively closed or delayed to be opened, and the time schedule can detect the response time.
Preferably, the signal receiving unit comprises a first conduction module, the signal response unit comprises an associated switch module, the first conduction module selects the time relay to be tested according to the gear selection signal, and the associated switch module comprises a time delay switch to be tested corresponding to the time relay to be tested; the first conduction module selectively excites or demagnetizes the time relay to be tested according to the on-off of the power switch signal, so that the time delay switch to be tested is switched on or switched off in a delayed mode under the excitation or demagnetization influence of the time relay to be tested.
Preferably, the first conduction module comprises a first normally closed switch, a second normally closed switch and a first time relay which is selected according to the gear selection signal and is used as a time relay to be tested; the delay switch to be tested is a first delay switch corresponding to the first time relay.
Preferably, the first conduction module comprises a first normally closed switch, a second normally closed switch and a third time relay which is selected according to the gear selection signal and is used as a time relay to be tested; the delay switch to be tested is a third delay switch corresponding to the third time relay.
Preferably, the signal receiving unit comprises a first conduction module and a second conduction module, the signal response unit comprises a correlation switch module and an auxiliary relay module, the second conduction module selects a time relay to be tested according to the gear selection signal, and the correlation switch module comprises a time delay switch to be tested corresponding to the time relay to be tested and an internal time delay switch corresponding to the internal time relay;
the first conduction module selectively excites or demagnetizes an internal time relay according to the on-off of a power switch signal;
the excitation or the loss of the internal time relay enables the internal time delay switch to be closed or disconnected in a delayed manner;
the closing or delayed opening of the internal delay switch leads to excitation or demagnetization of the auxiliary relay module, causes demagnetization or excitation of the internal time relay, and simultaneously causes the time relay to be tested to be excited or demagnetized, so that the delay switch to be tested is closed or delayed to be opened under the influence of the excitation or demagnetization of the time relay to be tested.
Preferably, the first conducting module comprises a first normally closed switch, a second normally closed switch and a first time relay selected according to the gear selection signal and used as an internal time relay; the second conduction module comprises a first normally open switch, an instantaneous relay and a second time relay serving as a time relay to be tested; the auxiliary relay module comprises an auxiliary relay, and the first normally closed switch and the first normally open switch are changed in switching condition under the excitation loss change of the auxiliary relay; the second normally closed switch changes the switching condition under the excitation loss change of the instantaneous relay;
the correlation switch module comprises a second time delay switch which corresponds to the second time relay and is used as a time delay switch to be tested, and a first time delay switch which corresponds to the internal time relay and is used as an internal time delay switch, and the second time delay switch changes the switching condition under the excitation loss variation of the second time relay; the first time delay switch changes the switching condition under the excitation loss change of the first time relay.
Preferably, the first conduction module includes a first normally closed switch, a second normally closed switch, and a third time relay selected according to the gear selection signal as an internal time relay; the second conduction module comprises a first normally open switch, an instantaneous relay and a fourth time relay serving as a time relay to be tested; the auxiliary relay module comprises an auxiliary relay, and the first normally closed switch and the first normally open switch are changed in switching condition under the excitation loss change of the auxiliary relay; the second normally closed switch changes the switching condition under the excitation loss change of the instantaneous relay;
the correlation switch module comprises a fourth time delay switch which corresponds to a fourth time relay and is used as a time delay switch to be tested, and a third time delay switch which corresponds to an internal time relay and is used as an internal time delay switch, and the fourth time delay switch changes the switching condition under the excitation loss variation of the fourth time relay; the third time delay switch changes the switching condition under the excitation loss change of the third time relay.
A time detection device for a medium voltage distribution board time relay comprises a time detection device in a time detection system for the medium voltage distribution board time relay.
A time detection method for a medium voltage distribution board time relay utilizes a time detection system for the medium voltage distribution board time relay, and comprises the following steps:
s1, connecting all devices and components on a time detection system of a pin-centering power distribution panel time relay;
s2, judging whether the controller outputs a gear control signal or not, if so, selecting a time relay to be tested by the time relay assembly according to the gear selection signal;
and S3, judging whether the air circuit breaker outputs a power switch signal or not, if so, responding by the relay with the time to be detected according to the on-off of the power switch signal, so that the time table detects the response time.
The beneficial effects of the implementation of the invention are as follows: according to the time detection system, the time detection device and the time detection method for the time relay of the medium-voltage distribution board, the time relay to be detected is selected through the gear selection signal, and the on-off of the time relay to be detected is controlled through the power switch signal, so that the response time of the time schedule detection is achieved, and the time relay is verified. According to the time detection system, the time detection device and the time detection method for the time relay of the medium voltage distribution board, provided by the embodiment of the invention, the time is verified in a mode of not disconnecting and not disassembling the relay, and one person can complete the operation. The method can not only complete the checking work according to the program requirement, but also be fast and accurate, improve the quality and efficiency of the measurement work and save the manpower.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a time detection system for a medium voltage panel time relay in some embodiments of the invention;
FIG. 2 is a schematic diagram of the connections of the power supply, air circuit breaker, controller, and schedule of FIG. 1;
FIG. 3 is a schematic diagram of a time relay assembly in some embodiments of the invention;
FIG. 4 is a circuit diagram of a first embodiment of the present invention;
FIG. 5 is a circuit diagram of a third embodiment of the present invention;
FIG. 6 is a schematic diagram of a time relay assembly in accordance with further embodiments of the invention;
FIG. 7 is a circuit diagram of a second embodiment of the present invention;
FIG. 8 is a circuit diagram of a fourth embodiment of the present invention;
FIG. 9 is a flow chart of a method of time detection for a medium voltage panel time relay in some embodiments of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Fig. 1 illustrates a time detection system for a medium voltage switchboard time relay for verifying the time relay in some embodiments of the present invention. The time detection system for a medium voltage distribution board time relay in the embodiment of the present invention includes a medium voltage distribution board apparatus 100 and a time detection apparatus 200 connected to each other. Wherein the medium voltage distribution panel apparatus 100 includes a distribution panel female plug 101 and a time relay assembly 102 connected to each other, the time relay assembly 102 including at least four different types of time relays; the time detection apparatus 200 includes a dedicated interface 201, a power supply 202, an air circuit breaker 203, a controller 204, and a time table 205. The gear selection signal is transmitted to the time relay assembly 102 through the special interface 201 and the distribution board female plug 101 in sequence, so that the time relay assembly 102 selects a time relay to be tested from at least four different types of time relays according to the gear selection signal; the power switch signal is transmitted to the time relay assembly 102 via the controller 204, the dedicated interface 201, and the distribution board female plug 101, so that the time relay to be tested responds according to the on/off of the power switch signal, and the time schedule 205 detects the response time.
As shown in fig. 1 and 2, the time detection apparatus 200 includes a dedicated interface 201, a power supply 202, an air circuit breaker 203, a controller 204, and a time table 205. The time detection device 200 is internally connected with each component through a lead and is connected to the medium voltage distribution board device 100 through a secondary special plug, namely a special interface 201, so that the quick detection of the contact return time after the power failure of the 4-level (R400N-001XT, R400N-002XT, R400DN-001XT and R400DN-002XT) time relay can be realized without disassembling a relay and the wiring of the relay.
The dedicated interface 201 is used for connecting with the distribution board female plug 101. Preferably, the dedicated interface 201 can enable the connection of the time detection device 200 with the medium voltage switchboard apparatus 100.
The power supply 202 is used to provide power. Preferably, the power supply 202 is a 220VAC to 125VDC DC battery, which may be equipped with a rechargeable lithium battery, and the power supply 202 provides 125V excitation power to the coil of the time relay.
The air circuit breaker 203 is connected to the power source 202, and the air circuit breaker 203 is used to selectively output a power switching signal to turn on or off the power source 202.
The controller 204 is connected to the air circuit breaker 203 and the dedicated interface 201, and the controller 204 is configured to selectively output a gear selection signal. Preferably, as shown in fig. 2, the controller 204 is a PLC programmable programmer, and the programmer is used to implement 4-gear switching, and each gear has 5 loops, so that on-off control of the loops can be implemented. Specifically, gears 1 to 4 correspond to the first to fourth embodiments of the present invention, respectively, and are described in detail in each embodiment. O is open and ● is closed. The numbers on the controller 204 are pin codes, i.e., 3/13/32/35/42 correspond to the pins in the distribution board female plug 101, and the male and female pins and plug can be made to achieve a fast docking time detection device 200 with the medium voltage distribution board device 100.
As shown in fig. 1 and 2, the time table 205 is connected to the controller 204 and the dedicated interface 201, and the time table 205 is used for detecting the response time of a time relay to be measured. The timer 205 starts counting when the dc power is lost, and ends counting when the relay contact returns to close upon receipt of a time. Preferably, the schedule 205 is model number TIME 200. In some embodiments, the schedule 205 is circumscribed. When the schedule 205 is accessed to the controller 204, the STI and ST2 are respectively connected to the positive and negative electrode connectors of the controller 204; the SP1 connector is connected with the No. 13 pin of the controller 204; if the R400N type contactor is verified, 001X.3 is connected to the SP2 connector of the schedule 205; if the R400DN type contactor is verified, 001X.7 is connected to the SP2 connector of the schedule 205. Specifically, 001x.3 corresponds to the first and second embodiments of the present invention, and 001x.7 corresponds to the third and fourth embodiments of the present invention, which are described in detail in the respective embodiments. 001X.3 or 001X.7 is arranged at the outermost side, so that wiring is very convenient.
As further shown in fig. 1, the medium voltage distribution panel apparatus 100 includes an electrical distribution panel female plug 101 and a time relay assembly 102 that are interconnected. In some embodiments, the time relay assembly 102 includes a signal receiving unit 10 and a signal response unit 20, the signal receiving unit 10 is used for receiving a power switch signal and a gear selection signal, the signal receiving unit 10 includes a time relay to be tested; the signal response unit 20 is connected to the timetable 205, and the signal response unit 20 includes a delay switch to be tested corresponding to the time relay to be tested. The signal receiving unit 10 selects the time relay to be tested according to the gear selection signal, and the time relay to be tested selectively performs excitation or demagnetization according to the on/off of the power switch signal, so that the time delay switch to be tested is selectively closed or opened in a delayed manner, so that the time schedule 205 can detect the response time.
In some embodiments of the time detection system for a medium voltage distribution board time relay according to the present invention, as shown in fig. 1 and 3, the signal receiving unit 10 includes a first conducting module 11, the signal responding unit 20 includes an associated switch module 21, the first conducting module 11 selects a time relay to be tested according to the gear selection signal, and the associated switch module 21 includes a time delay switch to be tested corresponding to the time relay to be tested; the first conduction module 11 selectively excites or demagnetizes the time relay to be tested according to the on-off of the power switch signal, so that the time delay switch to be tested is turned on or turned off in a delayed manner under the influence of excitation or demagnetization of the time relay to be tested. Understandably, the delay switch to be tested changes the switching condition under the excitation loss variation of the time relay to be tested.
In this embodiment, there are two specific examples.
In a first embodiment, specifically referring to fig. 1, 2, 3 and 4, the first conducting module 11 includes a first normally-closed switch XE, a second normally-closed switch XAP and a first time relay 001XT selected according to a gear selection signal and serving as a time relay to be measured; the delay switch to be tested is a first delay switch XU corresponding to the first time relay 001 XT. The first time delay switch XU changes the switching condition under the excitation loss variation of the first time relay 001 XT. At this time, the gear selection signal is at the 1 st gear of the controller 204 in fig. 2, the corresponding time relay is R400N-001XT, that is, the time relay to be tested is the first time relay 001XT, and the time delay switch to be tested corresponding to the time relay to be tested is the first time delay switch XU. The thickened lines in fig. 4 are lines of positive and negative poles of a direct-current power supply, and are introduced through 001PJ35-001PJ42, wherein 001PJ is a distribution board female plug 101, 35 and 42 are female jacks in the plugs. When the power switch signal is turned on, that is, after the power supply 202 is turned on, the first time relay 001XT is electrically excited, the junction of the first time delay switch XU is immediately closed, and 001PJ-13 and 001X-3 are in a conducting state. When the power switch signal is disconnected, namely the direct current power supply is lost, the timetable 205 starts to time, the first time relay 001XT is demagnetized, the contact of the first time delay switch XU is disconnected in a delayed mode, when the timetable 205 detects that the contact is disconnected through 001PJ-13 and 001X-3, the time is ended, and the R400N-001XT verification work is ended.
In a third embodiment, specifically referring to fig. 1, 2, 3 and 5, the first conducting module 11 includes a first normally-closed switch XE, a second normally-closed switch XAP and a third time relay 001XT selected according to the gear selection signal and serving as a time relay to be measured; the delay switch to be tested is a third delay switch XU corresponding to the third time relay 001 XT. The third time delay switch XU changes the switching condition under the excitation loss variation of a third time relay 001 XT. At this time, the gear selection signal is in the 3 rd gear of the controller 204 in fig. 2, the corresponding time relay is R400DN-001XT, that is, the time relay to be tested is the third time relay 001XT, and the time delay switch to be tested corresponding to the time relay to be tested is the third time delay switch XU. The thickened lines in fig. 5 are the positive and negative lines of the direct current power supply, and are introduced through 001PJ-3 and 001PJ-42, wherein 001PJ is the distribution board female plug 101, and 3 and 42 are female pins in the plug. When the power switch signal is turned on, that is, after the power supply 202 is turned on, the third time relay 001XT is electrically excited, the junction of the third time delay switch XU is immediately closed, and 001PJ-13 and 001X-3 are in a conducting state. When the power switch signal is disconnected, namely the direct current power supply is lost, the time table 205 starts to time, the third time relay 001XT is demagnetized, the junction of the third time delay switch XU is disconnected in a delayed mode, when the time table 205 detects that the junction is disconnected through 001PJ-13 and 001X-3, the time is ended, and the R400DN-001XT verification work is ended.
In other embodiments of the time detection system for the medium voltage distribution board time relay according to the present invention, as shown in fig. 1 and fig. 6, the signal receiving unit 10 includes a first conducting module 11 and a second conducting module 12, the signal responding unit 20 includes an associated switch module 21 and an auxiliary relay module 22, the second conducting module 12 selects the time relay to be tested according to the gear selection signal, and the associated switch module 21 includes a time delay switch to be tested corresponding to the time relay to be tested and an internal time delay switch corresponding to the internal time relay. The first conducting module 11 selectively excites or demagnetizes an internal time relay according to the on/off of a power switch signal, the excitation or demagnetization of the internal time relay enables the internal time delay switch to be switched on or off in a delayed manner, the switching-on or delayed switching-off of the internal time delay switch causes the excitation or demagnetization of the auxiliary relay module 22, the demagnetization or excitation of the internal time relay is caused, and meanwhile, the excitation or demagnetization of the time relay to be tested is caused, so that the time delay switch to be tested is switched on or switched off in a delayed manner under the influence of the excitation or demagnetization of the time relay to be tested.
In this embodiment, there are two specific examples.
In a second embodiment, shown in particular in connection with fig. 1, 2, 6 and 7, the first conduction module 11 comprises a first normally closed switch XE, a second normally closed switch XAP and a first time relay 001XT, selected according to the range selection signal, as an internal time relay. The second conduction module 12 includes a first normally open switch XE, an instantaneous relay 001XP, and a second time relay 002XT as a time relay to be tested.
The auxiliary relay module 22 comprises an auxiliary relay 001XF, and both the first normally closed switch XE and the first normally open switch XE are changed by excitation loss variation of the auxiliary relay 001 XF. The second normally closed switch XAP changes the switching condition by the change of excitation loss of the instantaneous relay 001 XP. The association switch module 21 includes therein a second delay switch XU1 as a delay switch to be tested corresponding to the second time relay 002XT, and a first delay switch XU as an internal delay switch corresponding to the internal time relay. The second time delay switch XU1 changes the switch condition under the excitation loss variation of the second time relay 002 XT; the first time delay switch XU changes the switching condition under the excitation loss variation of the first time relay 001 XT.
The bold lines in fig. 7 are positive and negative poles of the dc power supply. As shown in fig. 1, 2, 6, and 7, power source 202 is introduced through 001PJ-35/32, 001PJ42, 001PJ being distribution board female plug 101, 32/35/42 being a female receptacle in the plug.
When the power switch signal is turned on, that is, after the power supply 202 is turned on, the first time relay 001XT will be excited first, as shown in the first conducting module 11 in fig. 7, the contact of the first time delay switch XU corresponding to the first time relay 001XT will be closed immediately, because of the closed first time delay switch XU, the negative power supply of the auxiliary relay 001XF is introduced, the excitation will occur to the auxiliary relay 001XF, which results in the disconnection of the first normally closed switch XE and the closure of the first normally open switch XE at the same time. The first normally closed switch XE in the first conduction module 11 is turned off, the first time relay 001XT is demagnetized, and the contact of the first time delay switch XU is turned off after delaying for 0.3-0.6 s.
The second switches on the first normally open switch XE that module 12 corresponds and takes place the closure immediately, instantaneous relay 001XP and second time relay 002XT will excite the magnetic field simultaneously, because of first time delay switch XU is the delay disconnection contact, auxiliary relay module 22 auxiliary relay 001XF can not take place to lose direct current negative pole power 202 immediately promptly, second normally open switch XAP and second time delay switch XU1 can be closed before first time delay switch XU disconnection, guarantee that auxiliary relay module 22 auxiliary relay 001 XF's negative pole power introduces all the time, auxiliary relay 001XF can not lose magnetism. It should be noted that, here, the associated switch module 21 further includes a second normally open switch XAP, and the second normally open switch XAP, like the second normally closed switch XAP, is also changed by the change of excitation loss of the momentary relay 001 XP.
The stabilized state is: the auxiliary relay 001 XF/the instantaneous relay 001 XP/the second time relay 002XT is in an electrified excitation state, the first time relay 001XT is in a demagnetized state, and the 001PJ-13 and the 001X-3 are kept in a closed state.
When all direct current power supplies are disconnected, the timetable 205 starts to time, the instantaneous relay 001 XP/the second time relay 002XT is demagnetized, the second normally open switch XAP is immediately opened, the second delay switch XU1 is opened in a delayed mode, when the timetable 205 detects that a loop is disconnected through 001PJ-13 and 001X-3, the time is ended, and the R400N-002XT verification work is ended.
In a fourth embodiment, shown in particular in connection with fig. 1, 2, 6 and 8, the first conduction module 11 comprises a first normally closed switch XE, a second normally closed switch XAP and a third time relay 001XT, selected according to the range selection signal, as an internal time relay. The second conduction module 12 includes a first normally open switch XE, an instantaneous relay 001XP, and a fourth time relay 002XT as a time relay to be tested.
The auxiliary relay module 22 comprises an auxiliary relay 001XF, and both the first normally closed switch XE and the first normally open switch XE are changed by excitation loss variation of the auxiliary relay 001 XF. The second normally closed switch XAP changes the switching condition by the change of excitation loss of the instantaneous relay 001 XP. The correlation switch module 21 includes therein a fourth delay switch XU1 as a delay switch to be tested corresponding to the fourth time relay 002XT, and a third delay switch XU as an internal delay switch corresponding to the internal time relay. The fourth time delay switch XU1 changes the switching condition by the excitation loss variation of the fourth time relay 002 XT; the third time delay switch XU changes the switching condition under the excitation loss variation of a third time relay 001 XT.
The bold lines in fig. 8 are positive and negative poles of the dc power supply. As shown in fig. 1, 2, 6, and 8, power source 202 is introduced through 001PJ-3/32, 001PJ42, 001PJ being distribution board female plug 101, 3/32/42 being a female receptacle in the plug.
When the power switch signal is turned on, that is, after the power supply 202 is turned on, the third time relay 001XT will be excited first, as shown in the first conducting module 11 in fig. 8, the junction of the third time delay switch XU corresponding to the third time relay 001XT will be closed immediately, because of the closed third time delay switch XU, the negative power supply of the auxiliary relay 001XF is introduced, the auxiliary relay 001XF will be excited, which results in the disconnection of the first normally closed switch XE and the closure of the first normally open switch XE at the same time. The first normally closed switch XE in the first conduction module 11 is turned off, the third time relay 001XT is demagnetized, and the contact of the third time delay switch XU is turned off after delaying for 0.3-0.6 s.
The second switches on the first normally open switch XE that module 12 corresponds and takes place the closure immediately, instantaneous relay 001XP and fourth time relay 002XT will be excited simultaneously, because of third time delay switch XU is the delay disconnection contact, auxiliary relay module 22 auxiliary relay 001XF can not take place to lose direct current negative pole power 202 immediately promptly, fourth time delay switch XU1 can be closed before third time delay switch XU disconnection, guarantee that auxiliary relay 001 XF's negative pole power introduces all the time, auxiliary relay 001XF can not lose magnetism.
The stabilized state is: the auxiliary relay 001 XF/the instantaneous relay 001 XP/the fourth time relay 002XT is in an electrified excitation state, the third time relay 001XT is in a demagnetized state, and the 001PJ-13 and the 001X-7 are kept in a closed state.
When all the direct current power supplies are disconnected, the timetable 205 starts to time, the fourth time relay 002XT is demagnetized, the third delay switch XU1 is turned off in a delayed mode, when the timetable 205 detects that a loop is disconnected through 001PJ-13 and 001X-7, the time is ended, and the R400DN-002XT verification work is ended.
The specific steps of the method for detecting the time of the medium voltage distribution board time relay according to some embodiments of the present invention are described below with reference to fig. 1 to 9. The method utilizes the time detection system for the time relay of the medium voltage distribution board in the previous embodiment, and comprises the following steps:
s1, connecting all devices and components on a time detection system of a pin-centering power distribution panel time relay;
s2, judging whether the controller 204 outputs a gear control signal or not, if so, selecting a time relay to be tested by the time relay assembly 102 according to the gear selection signal;
and S3, judging whether the air circuit breaker 203 outputs a power switch signal or not, if so, responding by the relay with the time to be detected according to the on-off of the power switch signal, so that the time table 205 detects the response time.
Specifically, first, the time detection apparatus 200 is connected to the distribution board female plug 101 of the medium voltage distribution board apparatus 100 through the dedicated interface 201;
then, according to the wiring schematic of fig. 2, the schedule 205 is switched in to the time detection apparatus 200, and if the R400N type contactor is verified, 001x.3 is switched in to the SP2 connector of the schedule 205, and if the R400DN type contactor is verified, 001x.7 is switched in to the SP2 connector of the schedule 205. 001X.3 or 001X.7 is arranged at the outermost side, so that wiring is very convenient.
After wiring is completed, the appropriate gear on the controller 204 is selected based on the type of the calibration contactor and the type of the relay. Wherein 1-4 gears correspond to the first to fourth embodiments, respectively;
after the power source 202 is turned on through the air circuit breaker 203, it is turned off, and the reading of the time table 205 is observed, and this value is the verification result value.
The invention also provides a time detection device for the time relay of the medium voltage distribution board, which comprises a time detection device in the time detection system of the time relay of the medium voltage distribution board, which is equivalent to the time detection device in the embodiment, and the description is omitted here.
The embodiment of the invention has the advantages that the relay does not need to be disconnected and disassembled, the complicated wiring is not needed, the relays in four times can be quickly and effectively checked, the personal risks of damaging the relays and connecting wrong lines are avoided, and the operation is quick and convenient; the detection efficiency is improved, the detection period is short, the period for overhauling the distribution board of the nuclear power station is saved, and the power failure time is shortened; the time detection device has the advantages of portable operation function, light weight, suitcase type, flexible use, no limitation of a power socket, flexible use in a field compact area of a nuclear power station and no influence on other work.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that several modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered within the scope of the present invention.
Claims (10)
1. A time detection system for a medium voltage switchboard time relay, characterized by comprising a medium voltage switchboard apparatus (100) and a time detection apparatus (200) connected to each other;
the medium voltage switchboard apparatus (100) comprises a switchboard female plug (101) and a time relay assembly (102) connected to each other, the time relay assembly (102) comprising at least four different types of time relays;
the time detection device (200) comprises
A dedicated interface (201) for connection with the switchboard female plug (101);
a power supply (202);
an air circuit breaker (203) connected to the power source (202), the air circuit breaker (203) being configured to selectively output a power switching signal to turn on or off the power source (202);
a controller (204) connected with the air circuit breaker (203) and the dedicated interface (201), the controller (204) being configured to selectively output a gear selection signal;
the time schedule (205) is connected with the controller (204) and the special interface (201), and the time schedule (205) is used for detecting the response time of a time relay to be measured;
the gear selection signal is transmitted to the time relay assembly (102) through the special interface (201) and the distribution board female plug (101) in sequence, so that the time relay assembly (102) selects the time relay to be tested from at least four different types of time relays according to the gear selection signal; the power switch signal is transmitted to the time relay assembly (102) through the controller (204), the special interface (201) and the distribution board female plug (101), the time relay to be tested responds according to the on-off of the power switch signal, and the time table (205) detects the response time.
2. The time detection system for medium voltage switchboard time relays according to claim 1, characterized in that said time relay assembly (102) comprises a signal receiving unit (10) and a signal response unit (20);
the signal receiving unit (10) is used for receiving the power switch signal and the gear selection signal, and the signal receiving unit (10) comprises the time relay to be tested;
the signal response unit (20) is connected with the time schedule (205), and the signal response unit (20) comprises a to-be-tested delay switch corresponding to the to-be-tested time relay;
the signal receiving unit (10) selects the time relay to be tested according to the gear selection signal, and the time relay to be tested selectively performs excitation or demagnetization according to the on-off of the power switch signal, so that the time delay switch to be tested is selectively closed or is delayed to be opened, and the time table (205) can detect the response time.
3. The time detection system for medium voltage switchboard time relays according to claim 2, characterized in that said signal receiving unit (10) comprises a first conduction module (11), said signal response unit (20) comprises an association switch module (21), said first conduction module (11) selects said time relay to be tested according to said gear selection signal, said association switch module (21) comprises said time delay switch to be tested corresponding to said time relay to be tested; the first conduction module (11) selectively excites or demagnetizes the time relay to be tested according to the on-off of the power switch signal, so that the time delay switch to be tested is switched on or switched off in a delayed manner under the influence of excitation or demagnetization of the time relay to be tested.
4. The time detection system for medium voltage switchboard time relays according to claim 3, characterized in that said first conduction module (11) comprises a first normally closed switch (XE), a second normally closed switch (XAP) and a first time relay (001XT) selected according to said gear selection signal as said time relay to be tested; the delay switch to be tested is a first delay switch (XU) corresponding to the first time relay (001 XT).
5. The time detection system for medium voltage switchboard time relays according to claim 3, characterized in that said first conduction module (11) comprises a first normally closed switch (XE), a second normally closed switch (XAP) and a third time relay (001XT) selected according to said gear selection signal as said time relay to be tested; the delay switch to be tested is a third delay switch (XU) corresponding to the third time relay (001 XT).
6. The time detection system for medium voltage panel time relays according to claim 2, characterized in that said signal receiving unit (10) comprises a first conducting module (11) and a second conducting module (12), said signal response unit (20) comprises a correlation switch module (21) and an auxiliary relay module (22), said second conducting module (12) selects said time relay to be tested according to said gear selection signal, said correlation switch module (21) comprises said time delay switch to be tested corresponding to said time relay to be tested and an internal time delay switch corresponding to said internal time relay;
the first conduction module (11) selectively excites or demagnetizes an internal time relay according to the on-off of the power switch signal;
the internal time delay switch is switched on or switched off in a delayed manner by excitation or demagnetization of the internal time relay;
the closing or delayed opening of the internal delay switch causes the excitation or the loss of the excitation of the auxiliary relay module (22), causes the loss of the excitation or the excitation of the internal time relay, and simultaneously causes the excitation or the loss of the time relay to be detected, so that the delay switch to be detected is closed or delayed to be opened under the influence of the excitation or the loss of the time relay to be detected.
7. The time detection system for medium voltage switchboard time relays according to claim 6, characterized in that said first conduction module (11) comprises a first normally closed switch (XE), a second normally closed switch (XAP) and a first time relay (001XT) selected according to said gear selection signal as said internal time relay; the second conduction module (12) comprises a first normally open switch (XE), an instantaneous relay (001XP) and a second time relay (002XT) serving as the time relay to be tested; the auxiliary relay module (22) comprises an auxiliary relay (001XF), and the first normally closed switch (XE) and the first normally open switch (XE) are changed in switching condition by the excitation loss change of the auxiliary relay (001 XF); the second normally closed switch (XAP) changes the switch condition under the excitation loss variation of the instantaneous relay (001 XP);
the associated switch module (21) comprises a second time delay switch (XU1) corresponding to the second time relay (002XT) and serving as the time delay switch to be tested, and a first time delay switch (XU) corresponding to the internal time relay and serving as the internal time delay switch, and the second time delay switch (XU1) changes the switching condition under the excitation loss variation of the second time relay (002 XT); the first time delay switch (XU) changes the switching condition under the excitation loss variation of the first time relay (001 XT).
8. The time detection system for medium voltage switchboard time relays according to claim 6, characterized in that said first conduction module (11) comprises a first normally closed switch (XE), a second normally closed switch (XAP) and a third time relay (001XT) selected according to said gear selection signal as said internal time relay; the second conduction module (12) comprises a first normally open switch (XE), an instantaneous relay (001XP) and a fourth time relay (002XT) serving as the time relay to be tested; the auxiliary relay module (22) comprises an auxiliary relay (001XF), and the first normally closed switch (XE) and the first normally open switch (XE) are changed by excitation loss of magnetism of the auxiliary relay (001XF) to change the switch condition; the second normally closed switch (XAP) changes the switch condition under the excitation loss variation of the instantaneous relay (001 XP);
the correlation switch module (21) comprises a fourth time delay switch (XU1) corresponding to the fourth time relay (002XT) and used as the time delay switch to be tested, and a third time delay switch (XU) corresponding to the internal time relay and used as the internal time delay switch, and the fourth time delay switch (XU1) changes the switching condition under the excitation loss variation of the fourth time relay (002 XT); the third time delay switch (XU) changes the switching condition under the excitation loss variation of the third time relay (001 XT).
9. A time detection device for medium voltage switchboard time relays, characterized in that it comprises said time detection device (200) in the time detection system for medium voltage switchboard time relays according to any of claims 1 to 8.
10. A time detection method for medium voltage switchboard time relays, using the time detection system for medium voltage switchboard time relays according to any of claims 1 to 8, characterized in that it comprises the following steps:
s1, connecting each device and each component on the time detection system aiming at the time relay of the medium voltage distribution board;
s2, judging whether the controller (204) outputs the gear control signal or not, if so, selecting the time relay to be tested by the time relay assembly (102) according to the gear selection signal;
s3, judging whether the air circuit breaker (203) outputs the power switch signal or not, if so, responding by the relay with the time to be measured according to the on-off of the power switch signal, and enabling the time table (205) to detect the response time.
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