CN209878901U - Open-in monitor suitable for testing microcomputer relay protection device - Google Patents
Open-in monitor suitable for testing microcomputer relay protection device Download PDFInfo
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- CN209878901U CN209878901U CN201920411605.8U CN201920411605U CN209878901U CN 209878901 U CN209878901 U CN 209878901U CN 201920411605 U CN201920411605 U CN 201920411605U CN 209878901 U CN209878901 U CN 209878901U
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Abstract
The utility model relates to a monitor of opening into suitable for computer relay protection device test belongs to relay protection test field. The open-in monitor comprises at least one test circuit, each test circuit comprises a power supply circuit, an optical coupler, a control switch and an indicator light, the input side of the optical coupler and the control switch are serially arranged in the power supply circuit, the positive end of the output side of the optical coupler is used for connecting an open-in power supply, the negative end of the output side of the optical coupler is connected with one end of the indicator light, and the other end of the indicator light is a signal output end of the test circuit. The opening monitor only needs to control the on and off of the control switch when the relay protection device is effectively tested, and the indicator lamp is observed, so that the operation is simple, and the time is further saved. The open-in monitor can avoid the bad conditions of missing detection and the like, can also test the open-in plug-ins of a plurality of relay protection devices simultaneously, and improves the test efficiency and the test reliability.
Description
Technical Field
The utility model relates to a monitor of opening into suitable for computer relay protection device test belongs to relay protection test field.
Background
The microcomputer relay protection device is generally provided with an open/close port, the open/close port is connected with an open/close plug-in unit, the open/close plug-in unit belongs to a component of an open/close loop, whether the open/close amount of the microcomputer relay protection device is effective or not is closely related to the functional reliability of the relay protection device, and the microcomputer relay protection device can perform subsequent protection actions only when the effective open/close amount is input into the open/close port of the relay protection device. And whether the plug-in unit of the microcomputer relay protection device normally and directly influences the action condition of the protection outlet, therefore, the plug-in check is required to be carried out before the relay protection device is put into operation so as to determine whether the plug-in unit can normally work. In the research and development testing stage, the opening related test (namely whether the opening is effective) performed on the microcomputer relay protection device is also the most basic test item and belongs to the basic guarantee test item.
At present, most microcomputer relay protection devices have a large open-in amount, for example, 32-circuit open-in amount exists in transformer protection, and the open-in loops use 220V voltage, so that there is a high possibility that an operator may touch a wire by mistake due to non-standard operation, and further a safety accident occurs. In the prior art, the comprehensive inspection of the opening needs to be completed by a plurality of testers in a matching way, the time is more, and the frequent electrification operation of the testers is needed when the effectiveness of the opening is tested, so that the method is complicated and unsafe. In addition, in the multi-section multi-time-limit configured backup protection logic test, when the opening of more protections is effectively tested simultaneously, the effectiveness of the opening of each path is difficult to accurately judge, a tester needs to perform live-line inspection, and the complexity of operation is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a monitor opens into suitable for computer relay protection device test for solve prior art and open into the complicated loaded down with trivial details problem of operation when measuring to protection device.
For realizing above-mentioned purpose, the utility model provides a monitor is gone into to opening suitable for computer relay protection device test, including an at least test circuit, each test circuit all includes power supply return circuit, opto-coupler, control switch and pilot lamp, and the input side and the control switch cluster of opto-coupler are established in power supply return circuit, and the positive terminal of the output side of opto-coupler is used for connecting and opens the power, and the one end of pilot lamp is connected to the negative pole end of the output side of opto-coupler, and the other end of pilot lamp is for corresponding test circuit's signal output part for connect the opening port that relay protection device corresponds.
The testing circuit of the open-in monitor is used for indicating the working state of an open-in plug-in unit connected with an open-in port corresponding to a relay protection device, when the open-in monitor works, a control switch of a certain testing circuit is closed, the power supply circuit of the testing circuit supplies power normally, when an indicator lamp connected to the output side of an optical coupler in the testing circuit is lightened, the testing circuit is indicated to output the open-in amount normally, namely the open-in amount is input into the open-in port corresponding to the relay protection device, and the open-in plug-in unit corresponding to the open-in port works normally; when an indicator lamp connected to the output side of an optical coupler in the test circuit is not lightened, the fault of the plug-in unit corresponding to the relay protection device connected with the test circuit is indicated. The opening monitor only needs to control the on and off of the control switch when the relay protection device is effectively tested, and the observation indicator lamp is simple to operate, free of frequent operation and further time saving. The open-in monitor can avoid bad conditions such as wrong connection, missed detection and the like, can also test the open-in plug-ins of a plurality of relay protection devices simultaneously, improves the test efficiency and the reliability of the test, and has simple test circuit design and lower cost.
Furthermore, the open-in monitor also comprises a rectification module, wherein the direct current side of the rectification module is connected with the power supply circuit, and the alternating current side of the rectification module is used for being connected with an alternating current power supply.
The rectifier module is used for converting alternating current into direct current, so that the power supply loop supplies power normally, and normal work of the test circuit is guaranteed.
Furthermore, the open-in monitor also comprises a shell, a power plug used for connecting an alternating current power supply and a signal output interface used for being connected with the open-in port corresponding to the relay protection device, each test circuit and the rectifier module are arranged in the shell, the alternating current side of the rectifier module is connected with the power plug through a power supply line, and the signal output end of each test circuit is connected with the signal output interface through a signal line.
Through carrying out insulation isolation with casing, power plug and signal output interface with test circuit and rectifier module for whole test procedure is safer, avoids the tester to make the mistake touch the wire because the operation is not standard, takes place the incident.
Further, the control switch and the indicator lamp are arranged on the shell.
The control switch is arranged on the shell, so that the operation is more convenient, and the indicator light is arranged on the shell, so that the observation is more convenient.
Furthermore, the number of the test circuits is at least two, the test circuits are divided into at least one group, each group comprises at least two test circuits, and the control switches in the test circuits in each group form a dial switch.
The number of control switches can be reduced through the setting of dial switch, can also reduce the volume of opening into the monitor.
Furthermore, a current-limiting resistor is also arranged in the power supply loop in series.
The current-limiting resistor is used for reducing the electricity in the power supply circuit, and further protecting the safety of the light-emitting diode at the input side of the optical coupler.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention showing a monitor;
FIG. 2 is a schematic view of the opening monitor of the present invention;
fig. 3 is a schematic view of the structure of the opening control end of the opening monitor of the present invention;
FIG. 4 is a schematic diagram of the present invention driven into a monitor control display panel;
in the figure: 1 is a power plug, 2 is a shell, and 3 is an opening control end.
Detailed Description
The embodiment of the open-in monitor suitable for testing the microcomputer relay protection device comprises the following steps:
the open-in monitor (hereinafter referred to as monitor) suitable for testing the microcomputer relay protection device provided by the embodiment is shown in fig. 1, and comprises n test circuits, wherein n is 32, each test circuit comprises a power supply circuit, an optical coupler, a control switch (K in fig. 1) and an indicator light (LED in fig. 1), an input side (i.e. a primary side of the optical coupler) of the optical coupler and the control switch are serially arranged in the power supply circuit, a positive end of an output side (i.e. a secondary side of the optical coupler) of the optical coupler is used for connecting an open-in power supply (i.e. an open-in positive power supply in fig. 1), a negative end of the output side of the optical coupler is connected with one end of the indicator light, and the other end of the indicator light is used as a signal output end of the test circuit and is used for. In other embodiments, the number of the test circuits is not limited, but one test circuit is connected to the number of the plug-in units connected to one of the open ports of the relay protection device, that is, the number of the test circuits is greater than or equal to the number of the plug-in units of the relay protection device.
The monitor judges the working state of the plug-in unit corresponding to the relay protection device connected with each test circuit according to the state of the indicator lamp in the test circuit. In this embodiment, in order to ensure that the power supply of the power supply loop is normal, the monitor further includes a rectification module (i.e., AC/DC in fig. 1), and the AC/DC includes a full-bridge rectification circuit composed of diodes. The direct current side of the AC/DC is connected with a power supply circuit, the alternating current side of the AC/DC is used for connecting an alternating current power supply, and the AC/DC converts alternating current of the alternating current power supply into direct current (here, 5V direct current) required by the power supply circuit, so that the optical coupler can be started normally to work. Of course, if the monitor is directly powered by a battery with a corresponding voltage, the AC/DC may not be provided.
In this embodiment, the power supply loops, the optocouplers, the control switches, the indicator lamps and the AC/DC in the 32 test circuits are all disposed on one PCB for connection, and in order to ensure the safety of the test, the monitor further includes a housing 2, a power plug 1 and a signal output interface (i.e., a switch-in control terminal 3) as shown in fig. 2, the PCB is packaged in the housing 2, the power plug 1 is connected to the AC side of the AC/DC, and the signal output terminals of the test circuits are connected to the switch-in control terminal 3 through signal lines. The size of the casing 2 is 214mm × 114mm × 50mm (L × W × H), and as shown in fig. 2, the casing 2 includes a control display panel and a transparent fiber glass plate base (hereinafter referred to as a base), and the control display panel, the base, and the PCB are fixed by bolts and nuts. And for convenient operation, set up control switch and pilot lamp on the control display panel, every pilot lamp carries on the code and opens the incoming port and corresponds in the protective relaying device, and open the incoming control end 3 and constitute by 32 scattered wires as shown in fig. 3, the terminal of switching on the incoming control end 3 after having the number plate in cluster on every wire, the number on the number plate and pilot lamp code one-to-one correspond, can be through the code that the pilot lamp corresponds on the control display panel open the plug-in components that the incoming port connects in the protective relaying device fast, a department in fig. 3 connects the positive power supply of opening in fig. 1.
In order to reduce the number of control switches, as another implementation manner, every four control switches form a dial switch, that is, every 4 test circuits are divided into a group, the on-off of which is controlled by one dial switch, 8 dial switches are totally arranged, the type of the dial switch is SW-4p, the positions of specific indicator lights and the dial switches on the control display panel are shown in fig. 4, the codes of the indicator lights are respectively open 1, open 2, open 3, … … and open 32, and the 8 dial switches are respectively dial switch 1, dial switch 2, … … and dial switch 8. Of course, as another embodiment, the grouping of the test circuits and the number of the dial switches are not limited, and 16 dial switches may be provided in each group of 2 test circuits, but the grouping number and the number of the dial switches have a certain corresponding relationship.
In order to avoid an excessive current in each power supply circuit, in this embodiment, a current limiting resistor R is connected in series in each power supply circuit, and the current limiting resistor R corresponds to each power supply circuit and is R1, R2, R3, … …, and R32. In another embodiment, the current limiting resistor may not be provided when the current is kept small.
Of course, in order to control the operation state of the monitor, the housing 2 is further provided with a switch (ON/OFF in fig. 4) and a power indicator for controlling the operation state of the monitor, and the monitor is turned ON, the power indicator is turned ON, the monitor is turned OFF, and the power indicator is turned OFF. The power indicator and the position of ON/OFF in the circuit are shown in figure 1, the output end of the ON/OFF connection 220V alternating current is used for controlling the connection and disconnection of the alternating current, the indicator is connected with the ON/OFF in series, and the output end of the indicator is connected with AC/DC.
The component specifications required for the monitor in this embodiment are shown in table one, and the required monitor can be obtained by connecting and assembling these components in the above-described connection relationship.
Component detail table of watch-monitor
| Serial number | Name (R) | Model specification | Number of | Remarks for note |
| 1 | AC/DC | DMC101-1 | 1 is provided with | |
| 2 | Dial switch | SW-4p | 8 are provided with | |
| 3 | Luminous diode (indicator lamp) | Φ3 | 32 (a) | Red colour |
| 4 | Luminous diode (Power indicator lamp) | Φ3 | 1 is provided with | Green colour |
| 5 | Glass fiber board | 1 block | 2mm thick | |
| 6 | PCB board | 1 block | ||
| 7 | Bolt and matched flat pad and elastic pad | 4 sets of | ||
| 8 | Optical coupler | TLP127 | 32 (a) | |
| 9 | Current-limiting resistor | RJ-470Ω-0.25w | 32 (a) |
The working process and the working principle of the monitor are as follows: the power supply system comprises a power supply plug 1, a switch-in control end 3, a relay protection device, a monitor and a power supply circuit, wherein the power supply plug 1 is connected with 220V alternating current, the switch-in control end 3 is connected with the relay protection device, then a switch of the monitor is pressed to enable the monitor to be in a working state, at the moment, the 220V alternating current is converted into 5V direct current through AC/DC, the voltage of the power supply circuit is 5V, then a certain test circuit is selected and controlled through a control switch, and of course, a plurality. The 5V direct current series control switch, the primary circuit of current-limiting resistor R and opto-coupler, when certain test circuit switches on, the primary circuit of opto-coupler switches on, the opto-coupler realizes "electricity-light-electricity" conversion, make the secondary circuit output signal drive pilot lamp of opto-coupler, if the pilot lamp lights, indicate that this test circuit normally exports the input, the input that opens promptly drops into the input port that relay protection device corresponds, explain that the plug-in components that open that this input port corresponds normally work, if the pilot lamp does not light, then indicate the plug-in components trouble of opening that corresponds with the relay protection device that this test circuit is connected. The monitor has the advantages of convenient wiring, simple structure, small volume, wide application range, high test efficiency, safe and convenient detection and the like, and is suitable for input control and monitoring of tests in the research and development process of various microcomputer relay protection devices. When the monitor is used for testing, a tester can complete the testing process in 10 minutes.
Claims (6)
1. The utility model provides a monitor of opening into suitable for computer relay protection device test, a serial communication port, includes an at least test circuit, and each test circuit all includes power supply return circuit, opto-coupler, control switch and pilot lamp, the input side of opto-coupler with the control switch cluster is established in the power supply return circuit, the positive terminal of the output side of opto-coupler is used for connecting and opens into the power, the negative pole end of the output side of opto-coupler is connected the one end of pilot lamp, the other end of pilot lamp is for corresponding test circuit's signal output part for connect the opening port that relay protection device corresponds.
2. The opening monitor suitable for testing the microcomputer relay protection device according to claim 1, wherein the opening monitor further comprises a rectifying module, a direct current side of the rectifying module is connected to the power supply circuit, and an alternating current side of the rectifying module is used for connecting an alternating current power supply.
3. The opening monitor suitable for testing the microcomputer relay protection device according to claim 2, wherein the opening monitor further comprises a housing, a power plug for connecting an ac power source, and a signal output interface for connecting with an opening input port corresponding to the relay protection device, each testing circuit and the rectifying module are disposed in the housing, an ac side of the rectifying module is connected to the power plug through a power supply line, and a signal output end of each testing circuit is connected to the signal output interface through a signal line.
4. The opening monitor for microcomputer relay protection device test according to claim 3, wherein said control switch and indicator light are disposed on said housing.
5. The opening monitor for testing the microcomputer relay protection device according to claim 1, wherein the number of the test circuits is at least two, the test circuits are divided into at least one group, each group includes at least two test circuits, and the control switches in the test circuits in each group form a dial switch.
6. The opening monitor for microcomputer relay protection device test according to claim 1, wherein a current limiting resistor is further connected in series in the power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920411605.8U CN209878901U (en) | 2019-03-28 | 2019-03-28 | Open-in monitor suitable for testing microcomputer relay protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920411605.8U CN209878901U (en) | 2019-03-28 | 2019-03-28 | Open-in monitor suitable for testing microcomputer relay protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209878901U true CN209878901U (en) | 2019-12-31 |
Family
ID=68957273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920411605.8U Active CN209878901U (en) | 2019-03-28 | 2019-03-28 | Open-in monitor suitable for testing microcomputer relay protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209878901U (en) |
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2019
- 2019-03-28 CN CN201920411605.8U patent/CN209878901U/en active Active
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