CN210270068U - Remote control loop tester for measurement and control device - Google Patents
Remote control loop tester for measurement and control device Download PDFInfo
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- CN210270068U CN210270068U CN201920674411.7U CN201920674411U CN210270068U CN 210270068 U CN210270068 U CN 210270068U CN 201920674411 U CN201920674411 U CN 201920674411U CN 210270068 U CN210270068 U CN 210270068U
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Abstract
The utility model discloses a measurement and control device remote control return circuit tester for need the power failure test among the solution prior art, and remote control signal export time is short, adopts universal meter test personnel to come the problem of not reaching the observation result. The method comprises the following steps: the device comprises a power supply unit, a delay unit, an alarm unit, an action unit and a feedback unit; the power supply unit supplies power for the action unit and the delay unit, the measurement and control device sends a remote control signal to the action unit, the delay unit works after the action unit acts, the delay unit controls the alarm unit to alarm the action, and meanwhile, the action unit feeds back an action result to the measurement and control device. The beneficial effects include: the remote control outlet time of the measurement and control device can be prolonged, the test range of the remote control outlet time is adjustable, and convenience is provided for the work of maintainers. Meanwhile, the dispatching automation monitoring system can display the change condition of the remote control object in real time. The test work efficiency is improved by 30%, the maintenance efficiency of the power grid is improved, and the power supply reliability is guaranteed.
Description
Technical Field
The utility model relates to an electric power tech field especially relates to a measurement and control device remote control return circuit tester.
Background
At present, a regional power grid 'regulation and control integrated' mode is greatly promoted, and a regional master station data acquisition and monitoring control System (SCADA) is needed, namely, more and more upgrading of a scheduling system and comprehensive automatic transformation of a transformer substation are needed. Along with the upgrading of a dispatching automation master station system and the comprehensive transformation of a transformer substation, a plurality of remote control and remote signaling experiments need to be completed under the condition of no power outage. The time and accuracy used for testing the remote control loop directly influence the overhaul time of team work and the safety of a regional power grid. Therefore, accurate remote control loop test of the measurement and control device is a significant link in work.
The existing remote control loop test method is to use a universal meter to measure the on-off of a loop on site, and the method has the disadvantages of large noise of the site environment and unclear indication of the universal meter. In the process of system upgrading or comprehensive transformation, if the testing method is incorrect or the operation is not standard, the remote control misoperation is easily caused. Meanwhile, the time for remote control signal outlet is too short, and the phenomenon cannot be observed by conventional instruments and workers. In operation, a fast and accurate instrument is needed for testing the remote control loop.
Disclosure of Invention
An embodiment of the utility model provides a measurement and control device remote control return circuit tester for need the power failure test among the solution prior art, and remote control signal export time is short, adopts universal meter test personnel to come the problem that too late observation result.
The embodiment of the utility model provides a measurement and control device remote control return circuit tester, include: the device comprises a power supply unit, a delay unit, an alarm unit, an action unit and a feedback unit; the power supply unit supplies power for the action unit and the delay unit, the measurement and control device sends a remote control signal to the action unit, the delay unit works after the action unit acts, the delay unit controls the alarm unit to alarm the action, and meanwhile, the action unit feeds back an action result to the measurement and control device;
the action unit comprises an intermediate relay, one end of a coil of the intermediate relay is connected with a remote control signal output end of the measurement and control device, the other end of the coil is connected with a negative electrode of the power supply unit, the time delay unit comprises a charging capacitor, a triode, a time delay resistor and a time delay chip, two ends of a first normally open contact of the intermediate relay are respectively connected with a positive electrode of the power supply unit and a positive electrode of the charging capacitor, the positive electrode of the charging capacitor is connected with a base level of the triode, the negative electrode of the charging capacitor is connected with a negative electrode of the power supply unit, a collector electrode of the triode is connected with a positive electrode of the power supply unit, an emitter stage of the triode is connected with an input end of the time delay chip, the time delay resistor is connected between the input end of the time delay.
Preferably, the power supply unit comprises a plug for accessing 220V alternating current, a power switch, a direct current inverter and a remote control loop switch which are connected in sequence.
Preferably, the time delay chip is an NE555 timing integrated circuit, the input end of the time delay chip is a trigger end pin 6 and a threshold end pin 2, a power supply end pin 8 and a reset end pin 4 are connected with the anode of the power supply unit, and an output end pin 3 is connected with the alarm unit.
Preferably, the alarm unit comprises a buzzer and an indicator lamp which are connected in series.
Preferably, the intermediate relay is an ohm dragon intermediate relay comprising two pairs of normally open and normally closed nodes.
Preferably, the time-delay resistor comprises a fixed resistor and a sliding rheostat connected in series.
The utility model discloses beneficial effect includes: the remote control outlet time of the measurement and control device can be prolonged, the test range of the remote control outlet time is adjustable, and convenience is provided for the work of maintainers. Meanwhile, the dispatching automation monitoring system can display the change condition of the remote control object in real time. The remote control loop tester of the measurement and control device improves the working efficiency of remote control loop test by 30 percent, greatly improves the efficiency of power grid maintenance and ensures the reliability of power supply.
Drawings
Fig. 1 is a circuit diagram of a remote control loop tester of a measurement and control device in an embodiment of the present invention;
fig. 2 is a circuit diagram of a feedback unit in an embodiment of the present invention.
Detailed Description
For the convenience of tester survey measurement and control device remote control output result, the utility model provides a measurement and control device remote control return circuit tester, it is right below to combine the description drawing the utility model discloses a preferred embodiment explains.
At present, a power grid sends a remote control signal from a dispatching center and transmits the remote control signal to a measurement and control device 104, the measurement and control device 104 controls the switch of a transformer substation to be switched on and off after passing through a remote control loop, the transformer substation switch can control the power consumption of a user, after the transformer substation switch acts, the action signal is fed back to the measurement and control device 104 through a remote signaling loop and fed back to the dispatching center by the measurement and control device 104, and the dispatching center determines that the operation is successful.
The utility model discloses measurement and control device 104 remote control return circuit tester in the well embodiment is the partial replacement with the transformer substation switch for in the testing process, the not direct control transformer substation switch of dispatch center causes the user problem of having a power failure, can not have a power failure and carry out the test in remote control return circuit. The remote control loop tester of the measurement and control device 104 needs to be accessed with 220V AC mains supply, a power line of the tester is plugged into a power socket, then a remote control object, namely a remote control line and a letter shaking line of a transformer substation switch are dismantled, the remote control line of the remote control loop tester of the measurement and control device 104 is connected to a remote control signal output end of the measurement and control device 104, namely two lines connected with the measurement and control device 104 in figure 1; the remote communication line of the remote control loop tester of the measurement and control device 104 is connected to the remote communication signal input end of the measurement and control device 104, namely two lines which are led out from a pair of normally open and normally closed contacts H3Y-3 of an intermediate relay H3Y and connected to the measurement and control device 104 in the figure 2.
The following is a detailed structure of the remote control loop tester of the measurement and control device 104.
Referring to fig. 1 and 2, an embodiment of the present invention provides a measurement and control device 104 remote control loop tester, including: the device comprises a power supply unit, a delay unit, an alarm unit, an action unit and a feedback unit; the power supply unit supplies power for the action unit and the delay unit, the measurement and control device 104 sends a remote control signal to the action unit, the delay unit works after the action unit acts, the delay unit controls the alarm unit to alarm the action, and meanwhile, the action unit feeds back an action result to the measurement and control device 104.
The power supply unit comprises a plug for accessing 220V alternating current, a power switch 101, a direct current inverter 102 and a remote control loop switch 103 which are connected in sequence. The action unit comprises an intermediate relay H3Y, and the intermediate relay H3Y is an ohm dragon intermediate relay H3Y comprising two pairs of normally-open normally-closed nodes. One end of a coil of the intermediate relay H3Y is connected with a remote control signal output end of the measurement and control device 104, the other end of the coil is connected with a negative electrode of the power supply unit, the time delay unit comprises a charging capacitor C, a triode VT, a time delay resistor and a time delay chip 105, two ends of a first normally open contact H3Y-1 of the intermediate relay H3Y are respectively connected with a positive electrode of the power supply unit and a positive electrode of the charging capacitor C, the positive electrode of the charging capacitor C is connected with a base level of the triode VT, the negative electrode of the charging capacitor C is connected with the negative electrode of the power supply unit, a collector of the triode VT is connected with the positive electrode of the power supply unit, a triode VT emitter is connected with an input end of the time delay chip 105, the time delay resistor is connected between. The output end of the delay chip 105 is connected with the alarm unit, specifically, the delay chip 105 is an NE555 timing integrated circuit, the input end of the delay chip is a trigger end pin 6 and a threshold end pin 2, a power supply end pin 8 and a reset end pin 4 are connected with the anode of the power supply unit, and an output end pin 3 is connected with the alarm unit. The alarm unit comprises a buzzer HA and an indicator light LED which are connected in series. The feedback unit is that a normally closed contact H3Y-3 and a second normally open contact H3Y-2 of the intermediate relay H3Y are respectively connected to the remote signaling signal input end of the measurement and control device 104.
The glass fiber circuit board which is convenient to weld and use is selected as the material of the circuit board. The time delay chip 105 of the device selects the NE555(Timer IC) time delay chip 105, the time delay is adjustable, and the time of the remote control exit can be prolonged to 7-100 s. Intermediate relay H3Y adopts and takes 4 pairs of node ohm dragon intermediate relay H3Y, can provide two pairs of normally open nodes, and two pairs of normally closed nodes can be accurate provide all kinds of nodes. The time adjusting knob selects the adjustable resistance knob, so that the resistance can be adjusted rapidly, and the operation is convenient. The charging capacitor C adopts a common capacitor convenient for wiring, meets the requirement of a tester and is not influenced by electrostatic induction.
The tester shell adopts a firm and attractive plastic-packaged steel plate, and a control switch of the tester selects a power press-buckling switch CBSY-330 with simple wiring and clear indication. The power module needs an external 220V alternating current power supply to be accessed, a direct current 24V transmitter is arranged in the power module, and voltage conversion can provide long-time power supply for the tester. When the instrument is operated, the indicator light LED is on, and the indicator light LED adopts AD16-22, so that the instrument is firm, durable, attractive, high in brightness and clear in indication. The buzzer HA selects a continuous buzzer 3015A which is small in size and large in sound and meets the electric power support of the tester, and the continuous buzzer adopts direct current 24V for power supply. And testing whether the remote control loops of the measurement and control devices 104 at corresponding intervals are normal or not after the measurement and control screen. The tester verifies that the remote control loop at each interval is correct and rapid, the testing time of the remote control loop is reduced from 15 minutes to 5 minutes, and the efficiency is improved by 33%.
Specifically, after a power supply is connected and a remote control line and a remote communication line are connected, the power supply switch 101 and the remote control loop switch 103 are pressed, the dispatching center starts to send a remote control signal, then remote control operation is executed, when an indicator light LED is turned on, the buzzer HA sends an alarm, the time is more than 7s, and the success of a test experiment is indicated.
The working principle of the system is that when the measurement and control device 104 receives a signal, a corresponding node of the measurement and control device 104 is closed, a signal output end outputs a signal, namely the intermediate relay H3Y is electrified, after the coil of the intermediate relay H3Y is electrified, the first normally open contact H3Y-1 is closed, the charging capacitor C starts to be charged, after the triode VT conducts current, the current is output by the three-stage transistor emitter, the voltage of two input ends of the NE555 starts to increase, and when the output end pin 3 outputs high level, the buzzer HA gives an alarm, and the indicator light LED lights. The slide rheostat PR in the time delay resistor is adjustable, when the total resistance value of the time delay resistor is large, the power consumption of the time delay resistor is large, the discharging of the charging capacitor C is fast, and the time delay time is short; when the total resistance value of the delay resistor is small, the power consumption of the delay resistor is low, the discharge of the charging capacitor C is slow, and the delay time is long; the adjustment range of the delay time is between 7 and 100s by adjusting the resistance value of the sliding rheostat PR. Receiving the signal at measurement and control device 104, after intermediate relay H3Y coil was electrified, simultaneously, getting a pair of normally open normally closed contact of intermediate relay H3Y, connecting the remote signalling signal input end simultaneously, the action result of action unit this moment is passed back, and the mistake action can be guaranteed in single contact to a pair of normally open normally closed contact, guarantees the accuracy of test result.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The utility model provides a measurement and control device remote control return circuit tester which characterized in that includes: the device comprises a power supply unit, a delay unit, an alarm unit, an action unit and a feedback unit; the power supply unit supplies power for the action unit and the delay unit, the measurement and control device sends a remote control signal to the action unit, the delay unit works after the action unit acts, the delay unit controls the alarm unit to alarm the action, and meanwhile, the action unit feeds back an action result to the measurement and control device;
the action unit comprises an intermediate relay, one end of a coil of the intermediate relay is connected with a remote control signal output end of the measurement and control device, the other end of the coil is connected with a negative electrode of the power supply unit, the time delay unit comprises a charging capacitor, a triode, a time delay resistor and a time delay chip, two ends of a first normally open contact of the intermediate relay are respectively connected with a positive electrode of the power supply unit and a positive electrode of the charging capacitor, the positive electrode of the charging capacitor is connected with a base level of the triode, the negative electrode of the charging capacitor is connected with a negative electrode of the power supply unit, a collector electrode of the triode is connected with a positive electrode of the power supply unit, an emitter stage of the triode is connected with an input end of the time delay chip, the time delay resistor is connected between the input end of the time delay.
2. The remote control loop tester for the measurement and control device as claimed in claim 1, wherein the power supply unit comprises a plug for receiving 220V ac power, a power switch, a dc inverter and a remote control loop switch connected in sequence.
3. The remote control loop tester for the measurement and control device as claimed in claim 1, wherein the delay chip is an NE555 timing integrated circuit, the input terminals of the NE555 timing integrated circuit are a trigger terminal pin 6 and a threshold terminal pin 2, a power supply terminal pin 8 and a reset terminal pin 4 are connected with the anode of the power supply unit, and an output terminal pin 3 is connected with the alarm unit.
4. The remote control loop tester for the measurement and control device of claim 1, wherein the alarm unit comprises a buzzer and an indicator lamp connected in series.
5. The remote control loop tester for measurement and control devices of claim 1 wherein the intermediate relay is an ohron intermediate relay comprising two pairs of normally open and normally closed nodes.
6. The remote control loop tester for test and control devices of claim 1 wherein the delay resistor comprises a fixed resistor and a sliding resistor connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920674411.7U CN210270068U (en) | 2019-05-13 | 2019-05-13 | Remote control loop tester for measurement and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920674411.7U CN210270068U (en) | 2019-05-13 | 2019-05-13 | Remote control loop tester for measurement and control device |
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| Publication Number | Publication Date |
|---|---|
| CN210270068U true CN210270068U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920674411.7U Expired - Fee Related CN210270068U (en) | 2019-05-13 | 2019-05-13 | Remote control loop tester for measurement and control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187258A (en) * | 2019-05-13 | 2019-08-30 | 国网宁夏电力有限公司培训中心 | A kind of measure and control device remote control circuit tester |
-
2019
- 2019-05-13 CN CN201920674411.7U patent/CN210270068U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187258A (en) * | 2019-05-13 | 2019-08-30 | 国网宁夏电力有限公司培训中心 | A kind of measure and control device remote control circuit tester |
| CN110187258B (en) * | 2019-05-13 | 2024-04-02 | 国网宁夏电力有限公司培训中心 | Remote control loop tester of measurement and control device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 Termination date: 20210513 |
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| CF01 | Termination of patent right due to non-payment of annual fee |