CN211577308U - Detection system of external signal generation device - Google Patents
Detection system of external signal generation device Download PDFInfo
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- CN211577308U CN211577308U CN201921952709.6U CN201921952709U CN211577308U CN 211577308 U CN211577308 U CN 211577308U CN 201921952709 U CN201921952709 U CN 201921952709U CN 211577308 U CN211577308 U CN 211577308U
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Abstract
The utility model discloses a execute signal generator's detecting system outward, including rack, operating panel, oscillograph, relay protection tester, communication server, the PT that steps up, PC workstation and execute signal generator outward, the internally mounted of rack has step up and control module, PT, PC workstation and oscillograph that steps up all are connected with the signal generator of executing outward, the PT that steps up still with the relay protection tester is connected, the relay protection tester with the PC workstation is connected, the PC workstation still with the oscillograph is connected, the rack meets with 220V voltage the rack with the signal generator of executing outward is connected. The utility model provides a difficult short-term test under the laboratory environment signal generator and how compatible all kinds of signal generator's problem of executing outward, can the short-term judgement signal generator function, the performance of executing outward whether qualified.
Description
Technical Field
The utility model relates to a distribution network technology field, concretely relates to execute signal generator's detecting system outward.
Background
With the increasing pace of construction and transformation of urban and rural power grids in China, overhead lines and cable lines are increasing continuously, and fault indicators are widely applied to power distribution networks by virtue of a series of advantages of rapidness, accuracy, reliability, capability of loading and unloading with points, automatic reset, maintenance-free, great reduction in fault finding, removing and power supply recovery time and the like. The fault indicator adopts the principle of an asymmetric power frequency current injection method, and utilizes the output characteristic signal sequence of the power distribution network applied signal generating device to ensure that the fault indicator can accurately select lines and position and indicate faults when a metallic or high-resistance grounding fault occurs, thereby improving the efficiency of troubleshooting and fault isolation by maintainers.
The power distribution network external signal generating device is generally installed on a transformer substation, an opening and closing station or a feeder outlet line, when a single-phase ground fault occurs on the line, the power distribution network external signal generating device judges the ground fault through zero sequence voltage, when the ground fault lasts for a certain time, the power distribution network external signal generating device automatically switches on and off a switch and generates a characteristic current signal, the signal returns to a signal source through a ground phase, a ground point and the ground of a fault outgoing line, and the signal does not pass through a non-fault outgoing line and a non-fault phase. And when the fault indicator arranged on the line detects a characteristic current signal generated by the power distribution network external signal generating device, the fault indicator carries out on-site turning indication and sends a fault signal to the power distribution main station to realize fault positioning.
The functional indexes of the power distribution network external signal generating device determine the accuracy of positioning the ground fault of the power distribution automation system, and the existing detection method is used for detecting the functional indexes of the power distribution network external signal generating device by building a 10KV power distribution network true test field, so that the method is huge in cost and low in efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in to the not enough among the above-mentioned prior art, provides a signal generating device's detecting system executes outward, can solve the problem of the dilemma of hardly simulating 10kV ground connection under the current laboratory environment.
The utility model provides a technical scheme that its technical problem adopted is:
a detection system of an external signal generating device comprises a cabinet, an operation panel, a wave recorder, a relay protection tester, a communication server, a boosting PT, a PC workstation and an external signal generating device, the front surface of the cabinet is provided with the operation panel, the lower part of the operation panel is provided with a wave recorder, the relay protection tester is arranged at the lower part of the wave recorder, the communication server is arranged at the lower part of the relay protection tester, the boosting PT and the control module are arranged in the cabinet, the boosting PT, the PC workstation and the wave recorder are all connected with an external signal generating device, the boosting PT is also connected with the relay protection tester which is connected with the PC workstation, the PC workstation is also connected with the wave recorder, the cabinet is connected with a V voltage, and the cabinet is connected with the external signal generating device.
Furthermore, the L line of the 220V power supply is connected with a control switch, the control switch is connected with a relay, the relay is connected with an analog resistor, the analog resistor is connected with the wave recorder, and the wave recorder is connected with the external signal generating device.
Furthermore, the auxiliary contacts of the three relays are connected in parallel, and are connected with the current channel of the wave recorder after being connected with the analog resistor in series, and the wave recorder is connected with the external signal generating device.
Further, the cabinet is connected with a plurality of external signal generating devices.
Further, the number of the external signal generating devices is 4.
Furthermore, the control module is connected with the relay and used for controlling the on-off switching of the relay according to the circuit information.
Further, the PC workstation acquires the wave recording file and the remote signaling deflection signal of the external signal generating device through the communication server.
Further, the communication server acquires the signal of the external signal generating device through/protocol.
Further, the PC workstation also controls the relay protection tester to output a three-phase voltage signal to the boost PT.
Furthermore, the connection position is spliced by an aviation plug and an aviation socket.
Compared with the prior art, the utility model has the following advantage:
1. the utility model can realize the function index test of the distribution external signal generating device quickly and efficiently, and the AC 220V for the external power supply in the test environment does not need to build a true test field of the 10KV power distribution network; the PC workstation can be used for flexibly editing the test case and comprehensively testing the applied signal generating device; the automatic execution and automatic report issuing of the single-phase earth fault positioning test project of the power distribution network can be realized by automatically comparing voltage and current waveform files and switch displacement signals of the wave recorder and the external signal generating device by utilizing the PC workstation.
2. The utility model discloses can use a system configuration 4 outer signal generator that execute, very big improvement efficiency, the cost is reduced.
Drawings
Fig. 1 is an overall structure diagram of a cabinet of a detection system of an external signal generating device according to the present invention;
fig. 2 is a block diagram of a detection system of the external signal generating device of the present invention;
FIG. 3 is a schematic diagram of the detection system of the external application signal generating device according to the present invention connected to a single external application signal generating device;
FIG. 4 is a schematic diagram of the detection system of the external signal generator according to the present invention connected to a plurality of external signal generators;
description of reference numerals:
1-cabinet, 2-operation panel, 3-recorder, 4-relay protection tester, 5-communication server.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples:
it should be noted that the structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy that the present invention can produce and the purpose that the present invention can achieve.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The utility model provides a execute signal generator's detecting system outward, includes 1, operating panel 2, oscillograph 3, relay protection tester 4, communication server 5, the PT that steps up, PC workstation and execute signal generator outward, 1 openly installs of cabinet operating panel 2, oscillograph 3 is installed to operating panel 2's lower part, install the lower part of oscillograph 3 relay protection tester 4, communication server 5 is installed to relay protection tester 4 lower part, the internally mounted of cabinet 1 has PT and control module step up, PT, PC workstation and oscillograph 3 all are connected with executing signal generator outward, step up the PT still with relay protection tester 4 is connected, relay protection tester 4 with the PC workstation is connected, the PC workstation still with oscillograph 3 is connected, cabinet 1 meets with 220V voltage, The cabinet 1 is connected with the external signal generating device.
Specifically, the L line of the 220V power supply is connected with a control switch, the control switch is connected with a relay, the relay is connected with an analog resistor, the analog resistor is connected with a wave recorder, and the wave recorder is connected with an external signal generating device.
Specifically, the auxiliary contacts of the three relays are connected in parallel, and are connected with the current channel of the wave recorder after being connected with the analog resistor in series, and the wave recorder is connected with the external signal generating device.
Specifically, the cabinet 1 is connected to a plurality of external signal generating devices.
Specifically, the number of the external signal generating devices is 4.
Specifically, the control module 7 is connected to the relay and configured to control on-off switching of the relay according to information of each circuit.
Specifically, the PC workstation acquires a recording file and a remote signaling displacement signal of the external signal generating device through the communication server 5.
Specifically, the communication server 5 acquires the signal of the external signal generating device through the 101/104 protocol.
Specifically, the PC workstation also controls the relay protection tester 4 to output a three-phase voltage signal to the boost PT.
Specifically, the connection is spliced by an aviation plug and an aviation socket.
The utility model discloses beneficial effect who has: the function index test of the externally applied signal generating device can be quickly and efficiently realized, the AC 220V for an external power supply in a test environment is tested, and a 10KV power distribution network true test field does not need to be built; the PC workstation can be used for flexibly editing the test case and comprehensively testing the applied signal generating device; the PC workstation can be used for automatically comparing voltage and current waveform files and switch displacement signals of the wave recorder and the external signal generating device to realize automatic execution and automatic report issuing of a single-phase earth fault positioning test project of the power distribution network; the utility model discloses can use a system configuration 4 outer signal generator that execute, very big improvement efficiency, the cost is reduced.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.
Claims (10)
1. The detection system of the external signal generation device is characterized by comprising a cabinet (1), an operation panel (2), a wave recorder (3), a relay protection tester (4), a communication server (5), a boosting PT (potential transformer), a PC (personal computer) workstation and the external signal generation device, wherein the operation panel (2) is installed on the front side of the cabinet (1), the wave recorder (3) is installed on the lower portion of the operation panel (2), the relay protection tester (4) is installed on the lower portion of the wave recorder (3), the communication server (5) is installed on the lower portion of the relay protection tester (4), the boosting PT and a control module are installed inside the cabinet (1), the boosting PT, the PC workstation and the wave recorder (3) are all connected with the external signal generation device, the boosting PT is also connected with the relay protection tester (4), the relay protection tester (4) is connected with the PC workstation, the PC workstation is further connected with the wave recorder (3), the cabinet (1) is connected with 220V voltage, and the cabinet (1) is connected with the external signal generating device.
2. The system for detecting the external application signal generating device according to claim 1, wherein an L line of the 220V power supply is connected with a control switch, the control switch is connected with a relay, the relay is connected with an analog resistor, the analog resistor is connected with the wave recorder, and the wave recorder is connected with the external application signal generating device.
3. The detection system of the external application signal generating device as claimed in claim 2, wherein the auxiliary contacts of the three relays are connected in parallel, and are connected to the current channel of the wave recorder after being connected in series with the analog resistor, and the wave recorder is connected to the external application signal generating device.
4. The detecting system for applied signal generating devices as claimed in claim 3, characterized in that the cabinet (1) is connected with a plurality of applied signal generating devices.
5. The detection system of an applied signal generating device according to claim 4, wherein the number of the applied signal generating devices is 4.
6. The detection system for the external application signal generating device according to claim 1, wherein the control module is connected with a relay for controlling on-off switching of the relay according to the information of each circuit.
7. The detection system for an applied signal generating device according to claim 1, wherein the PC workstation obtains the recording file and the remote signaling displacement signal of the applied signal generating device through the communication server (5).
8. The system for detecting an external signal generating device according to claim 7, wherein the communication server (5) acquires the signal of the external signal generating device through 101/104 protocol.
9. The detection system of an applied signal generating device according to claim 1, wherein the PC workstation further controls the relay protection tester (4) to output a three-phase voltage signal to the boost PT.
10. The detection system of an applied signal generating device according to claim 3, wherein the connection is formed by plugging an aviation plug and an aviation socket.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921952709.6U CN211577308U (en) | 2019-11-13 | 2019-11-13 | Detection system of external signal generation device |
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| CN201921952709.6U CN211577308U (en) | 2019-11-13 | 2019-11-13 | Detection system of external signal generation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780156A (en) * | 2019-11-13 | 2020-02-11 | 国网山西省电力公司电力科学研究院 | Detection system of external signal generation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780156A (en) * | 2019-11-13 | 2020-02-11 | 国网山西省电力公司电力科学研究院 | Detection system of external signal generation device |
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