CN115236428B - Detection device and detection method for DTU power distribution terminal - Google Patents
Detection device and detection method for DTU power distribution terminal Download PDFInfo
- Publication number
- CN115236428B CN115236428B CN202210695032.2A CN202210695032A CN115236428B CN 115236428 B CN115236428 B CN 115236428B CN 202210695032 A CN202210695032 A CN 202210695032A CN 115236428 B CN115236428 B CN 115236428B
- Authority
- CN
- China
- Prior art keywords
- circuit
- switching
- distribution terminal
- remote signaling
- dtu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 74
- 230000011664 signaling Effects 0.000 claims abstract description 100
- 230000006870 function Effects 0.000 claims abstract description 38
- 230000009131 signaling function Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention belongs to the technical field of power distribution terminal detection, and provides a detection device of a DTU power distribution terminal. The invention also relates to a detection method of the DTU distribution terminal, firstly, according to whether the remote signaling circuit in the DTU distribution terminal to be detected is an active or passive mode, the remote signaling active and passive switching circuit is correspondingly selected and set; then, detect the hand function and the hand function of DTU distribution terminal in proper order, detect the remote signaling function of DTU distribution terminal, detect the remote control of DTU distribution terminal and divide and close the function and the protection and divide and close the function. The detection device accords with the human body safety voltage, has low economic cost, has the detection of a multipath remote signaling telemetry function, is simple and convenient to operate, and has positive significance for improving the detection efficiency and the test efficiency.
Description
Technical Field
The invention belongs to the technical field of power distribution terminal detection, and particularly relates to a detection device and a detection method of a DTU power distribution terminal, which are used for detecting multipath remote signaling remote control and protection functions of the DTU power distribution terminal.
Background
The DTU power distribution terminal is power distribution equipment integrating telemetry, remote signaling, remote control, protection and communication, is widely applied to various occasions such as a power distribution room, a ring main unit, an switching station and the like, and can be matched with a main station to realize various power distribution automation functions such as state monitoring, fault identification, fault isolation, remote control and the like.
Because the DTU distribution terminal is generally matched with a plurality of circuit breaker intervals, the DTU distribution terminal has more remote signaling input, remote control output and protection output, and when the input and output functions of the DTU distribution terminal are researched and developed and tested in factory debugging, the remote signaling, remote control and protection input and output functions are generally detected by means of a universal meter and a shorting bar. However, the detection method is low in working efficiency, double-point remote signaling is difficult to simulate, direct current can be touched by mistake in the operation process, and certain hidden danger is caused to personal safety.
Disclosure of Invention
Aiming at the technical problems, the invention designs a device and a method for detecting the multipath remote signaling remote control and protection functions of a DTU distribution terminal. The technical scheme adopted by the invention is as follows:
A detection apparatus for a DTU power distribution terminal, comprising: and the detection plate is used as a substrate of the detection device and provides 24V power input. The detection board is provided with a remote signaling active passive switching circuit, a magnetic latching relay and a protection circuit, a hand-in hand-out circuit, a remote signaling setting and indicating circuit, a remote control switching selection circuit and a protection switching selection circuit. The remote signaling active passive switching circuit is electrically connected with the remote signaling setting and indicating circuit, and is used for switching the power supply of the remote signaling detection circuit, when detection is carried out, the detection device is connected with the DTU power distribution terminal to form a remote signaling detection circuit, if the internal remote signaling circuit of the DTU power distribution terminal adopts an active mode, the switch of the remote signaling active passive switching circuit is placed in the active mode, and at the moment, the remote signaling detection circuit is powered by the internal remote signaling circuit of the DTU power distribution terminal; if the internal remote signaling circuit of the DTU distribution terminal adopts a passive mode, a switch of the remote signaling active passive switching circuit is arranged in the passive mode, and at the moment, the remote signaling detection circuit is powered by a 24V power supply of the detection board. The remote signaling setting and indicating circuit enables the remote signaling point location and the remote signaling public end to form an active loop through the switch T, so that all remote signaling signals are transmitted to the DTU distribution terminal. The remote signaling active passive switching circuit is electrically connected with the magnetic latching relay and the protection circuit, and the magnetic latching relay and the protection circuit are used for converting switching-on and switching-off operation into switching-on and switching-off contact indication. The remote control switching selection circuit and the protection switching selection circuit are respectively and electrically connected with the magnetic latching relay and the protection circuit, and the remote control switching selection circuit and the protection switching selection circuit are respectively used for detecting whether a corresponding remote control switching outlet and a corresponding protection switching outlet of the DTU distribution terminal are effective or not. The hand-in-hand circuit is electrically connected with the magnetic latching relay and the protection circuit and is used for detecting hand-in and hand-out functions of the DTU power distribution terminal.
The detection method of the DTU power distribution terminal is characterized in that the remote signaling setting and indicating circuit is electrically connected with a remote signaling input port of the DTU power distribution terminal, the magnetic latching relay and the protection circuit are electrically connected with the remote signaling input port of the DTU power distribution terminal, and the remote control switching output port and the protection switching output port of the DTU power distribution terminal are electrically connected with the remote control switching and protection switching selection circuit to form a detection loop of the DTU power distribution terminal; firstly, according to the active or passive mode of a remote signaling circuit in a DTU distribution terminal to be detected, a remote signaling active and passive switching circuit is correspondingly selected and set; then, detect the hand function and the hand function of DTU distribution terminal in proper order, detect the remote signaling function of DTU distribution terminal, detect the remote control of DTU distribution terminal and divide and close the function and the protection and divide and close the function.
The invention has the beneficial effects that:
The input power supply of the detection device adopts 24V voltage, which accords with the safety voltage of human body. The invention has low economic cost, has the detection of multipath remote signaling and telemetry functions, is simple and convenient to operate, and has positive significance for improving the detection efficiency and the test efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present application, or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is apparent that the drawings in the following description are specific embodiments of the application and that other drawings within the scope of the application may be obtained from these drawings by those skilled in the art without inventive effort.
FIG. 1 is a schematic diagram of a detection device according to an embodiment of the present invention;
Fig. 2 is a schematic circuit diagram of a detection device according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and complete in conjunction with the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the present invention.
Fig. 1 is a schematic diagram of a detection device according to an embodiment of the present invention. A detection apparatus for a DTU power distribution terminal, comprising: the pick-up board is an existing product for providing electrical connection and 24V power input for other circuit structures mounted on the pick-up board. On the detecting board, the remote signaling active passive switching circuit 101 is used for switching the power supply of a remote signaling detection loop between the detecting device and the DTU distribution terminal, and by designing the remote signaling active passive switching circuit 101, the two modes of active and passive of the remote signaling circuit inside the DTU distribution terminal are compatible, and the compatibility of the detecting device is improved. The remote signaling active passive switching circuit 101 is electrically connected with the remote signaling setting and indicating circuit 104, the remote signaling active passive switching circuit 101 is used for realizing that a remote signaling loop of the remote signaling setting and indicating circuit 104 switches a power supply between active and passive, and the remote signaling setting and indicating circuit 104 is used for transmitting all remote signaling signals to the DTU distribution terminal. The remote signaling active passive switching circuit 101 is electrically connected with the magnetic latching relay and protection circuit 102, and the magnetic latching relay and protection circuit 102 is used for converting switching-on and switching-off operation into switching-on and switching-off contact indication. The remote control switching selection circuit and the protection switching selection circuit 105 are electrically connected with the magnetic latching relay and the protection circuit 102, and the remote control switching selection circuit and the protection switching selection circuit 105 are used for detecting whether the corresponding switching-on/off outlet of the DTU power distribution terminal is effective. The hand-in hand-out circuit 103 is electrically connected with the magnetic latching relay and the protection circuit 102, and the hand-in hand-out circuit 103 is used for detecting hand-in and hand-out functions of the DTU power distribution terminal.
Fig. 2 is a schematic circuit diagram of a detection device according to an embodiment of the invention. The remote signaling active passive switching circuit 101 is used for controlling whether to string the 24V power input of the detection board into the remote signaling detection circuit, if the remote signaling circuit in the DTU power distribution terminal to be detected is in an active mode, the DTU power distribution terminal provides a power supply for the remote signaling detection circuit at this time, and the 24V power input of the detection board does not need to be string into the remote signaling detection circuit. The remote signaling active passive switching circuit 101 comprises toggle switches S3, S4 and S5, and push rods of the toggle switches S3, S4 and S5 are fixed together. Only three toggle switches are needed, so that free switching between an active mode and a passive mode of a remote signaling circuit in the DTU power distribution terminal is realized. If the remote signaling circuit in the DTU power distribution terminal to be detected is in a passive mode, the detection device is required to provide a power supply for the remote signaling detection circuit, and only the push rod is required to be shifted, so that the push rods of the toggle switches S3, S4 and S5 move rightwards in a consistent manner.
The magnetic latching relay and protection circuit 102 comprises a double-coil magnetic latching relay U1 and an accessory protection circuit thereof, wherein the double-coil magnetic latching relay U1 is selected, one of the two coils is used as a closing coil to execute closing operation, the other coil is used as a separating coil to execute separating operation, and the two coils are respectively connected with a freewheeling diode in anti-parallel for protecting the overvoltage of the operation. The positive poles of the two coils are connected with positive electricity, and the negative poles of the coils are connected with a hand-in hand-out circuit 103 (hand-in hand-out control loop) and a remote control on-off and protection on-off selection circuit 105 (remote control/protection on-off control loop). When the closing control loop is conducted, the closing coil is electrified, and the corresponding contact is adsorbed and kept in the closing indication loop and transmits a closing signal to the DTU power distribution terminal; when the switching-off control loop is conducted, the switching-off coil is electrified, and the corresponding contact is adsorbed and kept in the switching-off indication loop and transmits a switching-off signal to the DTU power distribution terminal. The freewheeling diodes D1, D2 consume the reverse potential generated by the coil in the form of current.
The hand-in hand-off circuit 103 includes a hand-in button K1 and a hand-off button K2. When a manual closing button K1 is pressed, a closing control loop is conducted, a U1 closing coil is electrified, a corresponding contact is adsorbed and kept on a closing position indication loop, a closing position signal is transmitted to a power distribution terminal, and a closing position indication lamp L2 is on; when the hand separation button K2 is pressed, the separation control loop is conducted, the U1 separation coil is electrified, the corresponding contact is adsorbed and kept in the separation indication loop, and the separation signal is transmitted to the power distribution terminal, and the separation indication lamp L1 is on. The hand-in hand-out circuit 103 is used for realizing the switching-on/off control of the double-coil magnetic latching relay U1 and is used for detecting hand-in and hand-out functions of the DTU power distribution terminal. The hand is combined into the remote control on/off protection switch, and the detection device can simulate remote control on/off switch through the DTU distribution terminal and local control on/off switch respectively.
The remote signaling set and indication circuit 104 includes: the double-coil magnetic latching relay comprises indication lamps L1-L15 and switches T3-T15, wherein the indication lamps L1 and L2 are connected with the double-coil magnetic latching relay U1, the L1 is a split indication lamp, the L2 is a combination indication lamp, the indication lamps L3-L15 are respectively and correspondingly connected with the switches T3-T15, remote signaling amounts are added through twisting the corresponding switches T3-T15, namely, a remote signaling public end is in short circuit with the corresponding remote signaling amounts, and the addition condition of each remote signaling is intuitively displayed through the indication lamps L3-L15. The remote signaling setting and indicating circuit comprises 15 paths of remote signaling selection and LED light indication, wherein two paths of remote signaling are directly connected to two contacts of the double-coil magnetic latching relay U1, and the other 13 paths of remote signaling are connected to corresponding selection switches.
The remote control switching and protection switching selection circuit 105 is used for detecting whether a corresponding switching-on/off outlet of the DTU power distribution terminal is effective, and comprises toggle switches S1 and S2, wherein the toggle switch S1 is used for switching on/off of a remote control switching-on/off function, and the toggle switch S2 is used for switching on/off of a protection switching-on/off function. When S1 is stirred to put the remote control switching-on and switching-off function into operation and the remote control switching-on loop of the DTU power distribution terminal is conducted (the remote control switching-on and the remote control public end are in short circuit), the U1 switching-on coil is powered on, and the corresponding contact is adsorbed and kept in the switching-on indication loop and transmits switching-on signals to the power distribution terminal; when the remote control switching function is put into operation and the DTU distribution terminal remote control switching loop is conducted, the U1 switching coil is powered on, the corresponding contact is adsorbed and kept in the switching indication loop, and a switching signal is transmitted to the distribution terminal; when S2 is stirred, the protection switching function is put in, and the same is true. The remote control switching and protection switching selection circuit is used for detecting whether a corresponding switching-on/off outlet of the DTU power distribution terminal is effective. Because the DTU power distribution terminal has two pairs of outlets, which are a remote control opening and closing output port and a protection opening and closing output port, the remote control opening and closing and protection opening and closing selection circuit 105 is used for realizing the switching of the function. When the remote control opening and closing selection switch is withdrawn, the remote control opening and closing function will be invalid, and when the protection opening and closing selection switch is withdrawn, the protection opening and closing function will be invalid. The short-time switching-on and switching-off pulse signals can be stored for a long time by a relay with magnetic holding so as to indicate the loop to display and transmit to the DTU power distribution terminal. The switching of the two-way switching-on and switching-off (remote control switching-on and switching-off and protection switching-on and switching-off) operation can be realized only by two toggle switches, and if the number of switching-on and switching-off operation ways is increased, the number of the toggle switches is only increased. Through the cooperation of toggle switch and pilot lamp to low-cost, extensible, easy operation realize the detection to DTU distribution terminal remote signaling function.
The detection device for the DTU power distribution terminal has the functions of 15 paths of remote signaling collection, one path of remote control switching on/off and one path of protection switching on/off control, can meet the detection of two modes of active and passive remote signaling circuits in the DTU power distribution terminal, and meets the detection requirements of various types of DTU power distribution terminals; the magnetic latching relay circuit has two mutually exclusive contact feedback, and can meet the detection of double-point remote signaling.
The detection method of the DTU power distribution terminal is characterized in that when the detection device is used for detection, the remote signaling setting and indicating circuit 104 is electrically connected with a remote signaling input port of the DTU power distribution terminal, the magnetic latching relay and protection circuit 102 is electrically connected with the remote signaling input port of the DTU power distribution terminal, and a remote control switching output port and a protection switching output port of the DTU power distribution terminal are electrically connected with the remote control switching and protection switching selection circuit 105 to form a detection loop of the DTU power distribution terminal. Firstly, according to whether a remote signaling circuit in the DTU power distribution terminal to be detected is in an active mode or a passive mode, the positions of push rods of toggle switches S3, S4 and S5 are correspondingly selected and set. If the remote signaling circuit in the DTU power distribution terminal to be detected is in an active mode, the DTU power distribution terminal provides a power supply for the remote signaling detection circuit, and the 24V power input of the detection board is not required to be connected in series into the remote signaling detection circuit; if the remote signaling circuit in the DTU distribution terminal to be detected is in a passive mode, a detection device provides a power supply for the remote signaling detection circuit, and the 24V power input of the detection board is required to be connected in series into the remote signaling detection circuit. Then, detect the hand function and the hand function of DTU distribution terminal in proper order, detect the remote signaling function of DTU distribution terminal, detect the remote control of DTU distribution terminal and divide and close the function and the protection and divide and close the function.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that: any person skilled in the art may modify or easily conceive of changes to the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (5)
1. A detection apparatus for a DTU power distribution terminal, comprising: the detecting board is characterized in that a remote signaling active passive switching circuit, a magnetic latching relay and protection circuit, a hand-in and hand-out contact indication circuit, a remote signaling setting and indication circuit, a remote control switching selection circuit and a protection switching selection circuit are arranged on the detecting board, the remote signaling active passive switching circuit is electrically connected with the remote signaling setting and indication circuit, the remote signaling active switching circuit is used for switching a power supply of a remote signaling detecting circuit, the remote signaling setting and indication circuit is used for transmitting a remote signaling signal to a DTU distribution terminal, the remote signaling active switching circuit is electrically connected with the magnetic latching relay and the protection circuit, the magnetic latching relay and the protection circuit are used for converting switching-in and switching-out operation into switching-in contact indication, the remote control switching-in and switching-out selection circuit is electrically connected with the magnetic latching relay and the protection circuit respectively, the remote control switching-in and protection switching-out selection circuit is used for detecting whether a corresponding DTU terminal remote control switching-in outlet and a protection switching-out outlet are effective, and the hand-in and hand-out switching-out selection circuit is electrically connected with the magnetic latching relay and the protection circuit respectively, and the hand-in switching-out selection circuit is used for detecting the hand-in the switching-out and hand-out function of the DTU terminal;
The magnetic latching relay and protection circuit comprises a double-coil magnetic latching relay U1 and an accessory protection circuit thereof, wherein one of the two coils is used as a closing coil to execute closing operation, the other coil is used as a separating coil to execute separating operation, and the two coils are respectively connected with a freewheeling diode in anti-parallel for protecting the overvoltage of the operation; the positive poles of the two coils are connected with positive electricity, and the negative poles of the coils are connected with a hand-on switching circuit and a remote control switching and protection switching selection circuit;
The remote signaling setting and indicating circuit comprises: the double-coil magnetic latching relay comprises indication lamps L1-L15 and switches T3-T15, wherein the indication lamps L1 and L2 are connected with the double-coil magnetic latching relay U1, L1 is a split indication lamp, L2 is a combination indication lamp, the indication lamps L3-L15 are respectively and correspondingly connected with the switches T3-T15, remote signaling quantity is added through twisting the corresponding switches T3-T15, and the addition condition of the remote signaling is displayed through the indication lamps L3-L15.
2. The DTU power distribution terminal detection device of claim 1, wherein the remote signaling active and passive switching circuit comprises toggle switches S3, S4, and S5, and push rods of the toggle switches S3, S4, and S5 are fixed together.
3. The DTU power distribution terminal detection device as recited in claim 1, wherein the hand-on hand-off circuit includes a hand-on button K1 and a hand-off button K2.
4. The detection device of a DTU power distribution terminal as recited in claim 1, wherein the remote control switching and protection switching selection circuit includes toggle switches S1 and S2, the toggle switch S1 is used for switching on and off of a remote control switching function, and the toggle switch S2 is used for switching on and off of a protection switching function.
5. The detection method of the DTU power distribution terminal is characterized in that the detection device of claim 1 is applied, a remote signaling setting and indicating circuit is electrically connected with a remote signaling input port of the DTU power distribution terminal, a magnetic latching relay and a protection circuit are electrically connected with the remote signaling input port of the DTU power distribution terminal, and a remote control switching output port and a protection switching output port of the DTU power distribution terminal are electrically connected with a remote control switching and protection switching selection circuit to form a detection loop of the DTU power distribution terminal; firstly, according to the active or passive mode of a remote signaling circuit in a DTU distribution terminal to be detected, a remote signaling active and passive switching circuit is correspondingly selected and set; then, detecting the hand-in function and hand-out function of the DTU power distribution terminal in sequence, detecting the remote signaling function of the DTU power distribution terminal, and detecting the remote control on-off function and the protection on-off function of the DTU power distribution terminal;
if the remote signaling circuit in the DTU power distribution terminal to be detected is in an active mode, the DTU power distribution terminal provides a power supply for the remote signaling detection circuit, and the 24V power input of the detection board is not required to be connected in series into the remote signaling detection circuit; if the remote signaling circuit in the DTU distribution terminal to be detected is in a passive mode, a detection device provides a power supply for the remote signaling detection circuit, and the 24V power input of the detection board is required to be connected in series into the remote signaling detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210695032.2A CN115236428B (en) | 2022-06-17 | 2022-06-17 | Detection device and detection method for DTU power distribution terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210695032.2A CN115236428B (en) | 2022-06-17 | 2022-06-17 | Detection device and detection method for DTU power distribution terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115236428A CN115236428A (en) | 2022-10-25 |
| CN115236428B true CN115236428B (en) | 2024-05-14 |
Family
ID=83669393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210695032.2A Active CN115236428B (en) | 2022-06-17 | 2022-06-17 | Detection device and detection method for DTU power distribution terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115236428B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08336230A (en) * | 1995-06-07 | 1996-12-17 | Toshiba Corp | Digital protective relay |
| KR20030035437A (en) * | 2001-10-31 | 2003-05-09 | 한국전력공사 | tester of frtu in distribution automation swich |
| CN101174759A (en) * | 2007-11-15 | 2008-05-07 | 杭州大有科技发展有限公司 | Integrated monitoring apparatus for electrical power distribution |
| CN102331534A (en) * | 2011-06-09 | 2012-01-25 | 航天科工深圳（集团）有限公司 | Power distribution terminal detecting system and method |
| CN103401311A (en) * | 2013-08-08 | 2013-11-20 | 浙江威奇电气有限公司 | Intelligent power distribution terminal |
| CN104155550A (en) * | 2014-08-08 | 2014-11-19 | 国家电网公司 | Portable power switch state simulation testing device |
| CN204101652U (en) * | 2014-08-08 | 2015-01-14 | 国家电网公司 | Portable power brake test device |
| CN205139272U (en) * | 2015-11-04 | 2016-04-06 | 国家电网公司 | Join in marriage power -grid switch analog switch unit for equipment |
| CN107976596A (en) * | 2017-11-27 | 2018-05-01 | 国网山东省电力公司聊城供电公司 | A kind of distribution power automation terminal experimental rig and its method of work |
| CN110221140A (en) * | 2019-05-05 | 2019-09-10 | 国网山东省电力公司临沂供电公司 | Distribution power automation terminal intelligent detecting instrument |
| CN112378447A (en) * | 2020-11-13 | 2021-02-19 | 盘昱兵 | Testing method of distribution automation terminal |
-
2022
- 2022-06-17 CN CN202210695032.2A patent/CN115236428B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08336230A (en) * | 1995-06-07 | 1996-12-17 | Toshiba Corp | Digital protective relay |
| KR20030035437A (en) * | 2001-10-31 | 2003-05-09 | 한국전력공사 | tester of frtu in distribution automation swich |
| CN101174759A (en) * | 2007-11-15 | 2008-05-07 | 杭州大有科技发展有限公司 | Integrated monitoring apparatus for electrical power distribution |
| CN102331534A (en) * | 2011-06-09 | 2012-01-25 | 航天科工深圳（集团）有限公司 | Power distribution terminal detecting system and method |
| CN103401311A (en) * | 2013-08-08 | 2013-11-20 | 浙江威奇电气有限公司 | Intelligent power distribution terminal |
| CN104155550A (en) * | 2014-08-08 | 2014-11-19 | 国家电网公司 | Portable power switch state simulation testing device |
| CN204101652U (en) * | 2014-08-08 | 2015-01-14 | 国家电网公司 | Portable power brake test device |
| CN205139272U (en) * | 2015-11-04 | 2016-04-06 | 国家电网公司 | Join in marriage power -grid switch analog switch unit for equipment |
| CN107976596A (en) * | 2017-11-27 | 2018-05-01 | 国网山东省电力公司聊城供电公司 | A kind of distribution power automation terminal experimental rig and its method of work |
| CN110221140A (en) * | 2019-05-05 | 2019-09-10 | 国网山东省电力公司临沂供电公司 | Distribution power automation terminal intelligent detecting instrument |
| CN112378447A (en) * | 2020-11-13 | 2021-02-19 | 盘昱兵 | Testing method of distribution automation terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115236428A (en) | 2022-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107664969B (en) | Intelligent double-control switch and control system and the control method of control system work | |
| CN205594390U (en) | Two accuse intelligence switch of pair and control system thereof | |
| CN103854464A (en) | Domestic digital intelligent power distribution box | |
| CN203338552U (en) | Household miniature circuit breaker and wireless remote controller thereof | |
| CN115236428B (en) | Detection device and detection method for DTU power distribution terminal | |
| CN101820164B (en) | Current leakage detection module and current leakage protection circuit breaker with current leakage detection module | |
| CN203481578U (en) | Remote-control type power switching device | |
| CN203135304U (en) | A state synthetic dynamic display device of a medium-voltage switch cabinet | |
| CN203101906U (en) | Air switch remote-control device based on WIFI (Wireless Fidelity) | |
| CN106057588B (en) | Air switch, equipment with intelligent measurement and system | |
| CN211859574U (en) | Leakage alarm switch | |
| CN211528958U (en) | Multi-control switch of Internet of things | |
| CN207216309U (en) | A kind of Intelligent home device with real point detection | |
| CN208674017U (en) | A kind of remote control intelligent breaker | |
| CN207339421U (en) | A kind of special transformer acquisition terminal wireless control system | |
| CN201656428U (en) | Electricity leakage detection module and electricity leakage protection circuit breaker with the same | |
| CN202111680U (en) | Wireless control switch | |
| CN202103475U (en) | Dual power supply automatic changeover switch control system | |
| CN206133236U (en) | Remote control intelligence is arranged and is inserted | |
| CN110673520A (en) | Single live wire intelligence switch system | |
| CN201556292U (en) | Remote controller | |
| CN220210020U (en) | Intelligent low-voltage switch with state remote transmission function | |
| CN210985641U (en) | Safe power utilization device | |
| CN215222154U (en) | Single live wire intelligence switch and single live wire many accuse switch | |
| CN204967788U (en) | Wireless switch system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |