CN204720970U - A kind of CT self-powered measuring and controlling protective device - Google Patents
A kind of CT self-powered measuring and controlling protective device Download PDFInfo
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- CN204720970U CN204720970U CN201520281078.5U CN201520281078U CN204720970U CN 204720970 U CN204720970 U CN 204720970U CN 201520281078 U CN201520281078 U CN 201520281078U CN 204720970 U CN204720970 U CN 204720970U
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- 230000001681 protective effect Effects 0.000 title claims abstract description 60
- 238000004891 communication Methods 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 230000011664 signaling Effects 0.000 claims description 7
- 230000001012 protector Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/14—Protecting elements, switches, relays or circuit breakers
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Abstract
A kind of CT self-powered of the utility model measuring and controlling protective device, belongs to the technical field of CT self-powered comprehensive protector; The technical problem solved is: provide that a kind of small volume, cost are lower, fail safe is higher and can carry out self-powered measuring and controlling protective device; The technical scheme adopted is: comprising: casing and be located at the circuit board of box house, described circuit board is provided with main control unit, CT sampling unit, opens into unit, outputs unit, communication unit, CT power circuit unit, described CT sampling unit, open into unit, output unit, communication unit is connected with described main control unit respectively with CT power circuit unit; The front panel of described casing is provided with human and machine interface unit, described human and machine interface unit is connected with described main control unit, the backplate of described casing is provided with sampled signal input interface, switch value input interface, control signal output interface, communication interface and power input interface; The utility model is applicable to electric power system.
Description
Technical field
A kind of CT self-powered of the utility model measuring and controlling protective device, belongs to the technical field of CT self-powered comprehensive protector.
Background technology
In electric power system; the normal operation of microcomputer protecting device ensures that power circuit and equipment normally work, guarantee the basic demand of electric power netting safe running; for this reason; in power distribution cabinet, need equipment such as configuration power module, direct current cabinet etc. for providing voltage source; not only cost is high for this method, volume is large; and there is no power cabinet in outside, when cannot obtain voltage source, the power supply protection of supply line cannot be provided.
For improving the safe and stable operation of supply line, electric power enterprise also adopts the self-powered mode of voltage transformer to provide power protection for supply line, but, due to the larger installation inconvenience of voltage transformer electric supply installation volume, when especially voltage transformer being installed in the space of ring main unit or other small volumes, be difficult to realize, the safe operation of power equipment is affected; In addition, when be closely short-circuited fault time, probably occur operating power decompression, and then cause relay protection device tripping or malfunction, fail safe is low; Therefore, a kind of small volume and the higher protective device of fail safe just seems particularly important.
Utility model content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is: provide that a kind of small volume, cost are lower, fail safe is higher and can carry out self-powered measuring and controlling protective device.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of CT self-powered measuring and controlling protective device, comprise: the casing with front panel and backplate, and be located at the circuit board of box house, described circuit board is provided with main control unit, CT sampling unit, opens into unit, outputs unit, communication unit, CT power circuit unit, described CT sampling unit, open into unit, output unit, communication unit is connected with described main control unit respectively with CT power circuit unit; The front panel of described casing is provided with human and machine interface unit, described human and machine interface unit is connected with described main control unit, the backplate of described casing is provided with sampled signal input interface, switch value input interface, control signal output interface, communication interface and power input interface, described sampled signal input interface, switch value input interface, control signal output interface, communication interface and power input interface respectively with CT sampling unit, open into unit, output unit, communication unit is connected with CT power circuit unit.
In the utility model, described CT sampling unit comprises: zero-sequence current acquisition module, first protective current acquisition module, second protective current acquisition module and the 3rd protective current acquisition module, described sampled signal input interface comprises: zero-sequence current input interface, first protective current input interface, second protective current input interface and the 3rd protective current input interface, described zero-sequence current input interface, first protective current input interface, second protective current input interface, 3rd protective current input interface respectively with described zero-sequence current acquisition module, first protective current acquisition module, second protective current acquisition module, 3rd protective current acquisition module is connected, described switch value input interface comprises non-electric charge quantity signalling input interface and opens into common port interface, and described non-electric charge quantity signalling input interface is all connected into unit with described opening into common port interface with opening, described control signal output interface comprises: actuating signal output interface and direct current dropout output interface, and described actuating signal output interface is all connected with described unit of outputing with direct current dropout output interface, described CT power circuit unit comprises: CT self-powered electric current input unit and debugging power input unit, described power input interface comprises: supply current input interface and debugging power input interface, described supply current input interface and debug power input interface respectively with described CT self-powered electric current input unit with debug power input unit and be connected, described human and machine interface unit comprises display screen, state signal lamp and button, and described display location is in the middle part of described front panel, and described state signal lamp is positioned at the left side of described display screen, and described button is positioned at the right side of described front panel, the backplate of described casing is also provided with device ground interface.
The utility model compared with prior art has following beneficial effect:
1, the CT self-powered comprehensive protector in the utility model forms primarily of casing and the circuit board be arranged in casing, circuit board is provided with main control unit, and the CT sampling unit to be connected with main control unit, open into unit, output unit, communication unit and CT power circuit unit, and be provided with on the backplate of casing respectively with CT sampling unit, open into unit, output sampled signal input interface, switch value input interface, control signal output interface, communication interface and power input interface that unit, communication unit and CT power circuit unit be connected; Like this, by sampled signal input interface, CT sampling unit gathers zero-sequence current and protective current data, and passes to main control unit, by switch value input interface, opens into the intake of unit reception from external connector, and passes to main control unit; When through Logic judgment, main control unit finds that the backward unit of outputing of condition meeting protection act sends the orders such as tripping operation, guard signal; By communication interface, can by data upload to main website; When no-voltage bus, by CT power circuit unit, device is normally worked; CT self-powered comprehensive protector in the utility model, have complete current protection, On-off signal is arranged, export control and communication function, structure is simple, and easy to use, cost is lower.
2, in the utility model, human and machine interface unit is provided with display screen, state signal lamp and button, and by state signal lamp, staff can get information about the running status of power work state, device, the information such as the running status of communication; By display screen and button, staff can monitor the various data of device collection, various event, record, and directly can carry out parameter modification to device, protective debugging, easy to use, flexibly.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail;
Fig. 1 is front view of the present utility model;
Fig. 2 is rearview of the present utility model;
Fig. 3 is end view of the present utility model;
Fig. 4 is electrical block diagram of the present utility model;
In figure: 1 is front panel, 2 is backplate, 3 is casing, 4 is main control unit, 5 is CT sampling unit, 6 for opening into unit, 7 for outputing unit, 8 is communication unit, 9 is CT power circuit unit, 10 is human and machine interface unit, 11 is sampled signal input interface, 12 is switch value input interface, 13 is control signal output interface, 14 is communication interface, 15 is power input interface, 16 is zero-sequence current acquisition module, 17 is the first protective current acquisition module, 18 is the second protective current acquisition module, 19 is the 3rd protective current acquisition module, 20 is zero-sequence current input interface, 21 is the first protective current input interface, 22 is the second protective current input interface, 23 is the 3rd protective current input interface, 24 is non-electric charge quantity signalling input interface, 25 for opening into common port interface, 26 is actuating signal output interface, 27 is direct current dropout output interface, 28 is CT self-powered electric current input unit, 29 is debugging power input unit, 30 is supply current input interface, 31 is debugging power input interface, 32 is display screen, 33 is state signal lamp, 34 is button, 35 is device ground interface.
Embodiment
As shown in Fig. 1 ~ Fig. 4, a kind of CT self-powered measuring and controlling protective device, comprise: the casing 3 with front panel 1 and backplate 2, and be located at the circuit board of casing 3 inside, described circuit board is provided with main control unit 4, CT sampling unit 5, opens into unit 6, outputs unit 7, communication unit 8, CT power circuit unit 9, described CT sampling unit 5, opens into unit 6, outputs unit 7, communication unit 8 and CT power circuit unit 9 and be connected with described main control unit 4 respectively, the front panel 1 of described casing 3 is provided with human and machine interface unit 10, described human and machine interface unit 10 is connected with described main control unit 4, the backplate 2 of described casing 3 is provided with sampled signal input interface 11, switch value input interface 12, control signal output interface 13, communication interface 14 and power input interface 15, described sampled signal input interface 11, switch value input interface 12, control signal output interface 13, communication interface 14 and power input interface 15 respectively with CT sampling unit 5, open into unit 6, output unit 7, communication unit 8 is connected with CT power circuit unit 9, particularly, in this device, the length and width size of casing 3 can be 160mm, 75mm respectively.
In the present embodiment, described CT sampling unit 5 comprises: zero-sequence current acquisition module 16, first protective current acquisition module 17, second protective current acquisition module 18 and the 3rd protective current acquisition module 19, described sampled signal input interface 11 comprises: zero-sequence current input interface 20, first protective current input interface 21, second protective current input interface 22 and the 3rd protective current input interface 23, described: zero-sequence current input interface 20, first protective current input interface 21, second protective current input interface 22, 3rd protective current input interface 23 respectively with described zero-sequence current acquisition module 16, first protective current acquisition module 17, second protective current acquisition module 18, 3rd protective current acquisition module 19 is connected, particularly, the measure error of described CT sampling unit 5 is less than 2%.
In the present embodiment, described switch value input interface 12 comprises non-electric charge quantity signalling input interface 24 and opens into common port interface 25, and described non-electric charge quantity signalling input interface 24 is all connected into unit 6 with described opening into common port interface 25 with opening; Further, described control signal output interface 13 comprises: actuating signal output interface 26 and direct current dropout output interface 27, and described actuating signal output interface 26 and direct current dropout output interface 27 are all connected with described unit 7 of outputing.
In the present embodiment, described CT power circuit unit 9 comprises: CT self-powered electric current input unit 28 and debugging power input unit 29, described power input interface 15 comprises: supply current input interface 30 and debugging power input interface 31, described supply current input interface 30 and debug power input interface 31 respectively with described CT self-powered electric current input unit 28 with debug power input unit 29 and be connected; Particularly; the power supply input variable of described debugging power input unit 29 can be DC24V; in electrical network one time load current can be small area analysis according to certain transformation of scale by described CT self-powered electric current input unit 28; to use to device safely; the load capacity of described CT self-powered electric current input unit 28 is greater than 7.5VA; can ensure that circuit load current is 10% of specified CT no-load voltage ratio time, can be supplied to the startup electric energy that protective device is enough.
Described human and machine interface unit 10 comprises display screen 32, state signal lamp 33 and button 34, and described display screen 32 is positioned at the middle part of described front panel 1, and described state signal lamp 33 is positioned at the left side of described display screen, and described button 34 is positioned at the right side of described front panel 1; The backplate 2 of described casing 3 is also provided with device ground interface 35; The resolution of described display screen 32 can be 128x64.
Box type transformation device protection supervisory equipment in the utility model adopts 32 bit processors, 16 bit AD samples, realizes every cycle 32 point sampling, has complete current protection, On-off signal, relay output and communication function; And this device electrical design has high reliability and high noise immunity, ensure that device adaptive capacity in the presence of a harsh environment and reliability; This device also can the ruuning situation of tape deck, for event records in chronological order such as trip protection event, remote control event, switch changed position, non electrical quantity displacements, facilitates user to have access to and check.
To sum up, the utility model has substantive distinguishing features and progress, by reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (6)
1. a CT self-powered measuring and controlling protective device, comprise: the casing (3) with front panel (1) and backplate (2), and be located at the inner circuit board of casing (3), it is characterized in that: described circuit board is provided with main control unit (4), CT sampling unit (5), opens into unit (6), outputs unit (7), communication unit (8) and CT power circuit unit (9), described CT sampling unit (5), open into unit (6), output unit (7), communication unit (8) is connected with described main control unit (4) respectively with CT power circuit unit (9), the front panel (1) of described casing (3) is provided with human and machine interface unit (10), described human and machine interface unit (10) is connected with described main control unit (4), the backplate (2) of described casing (3) is provided with sampled signal input interface (11), switch value input interface (12), control signal output interface (13), communication interface (14) and power input interface (15), described sampled signal input interface (11), switch value input interface (12), control signal output interface (13), communication interface (14) and power input interface (15) respectively with CT sampling unit (5), open into unit (6), output unit (7), communication unit (8) is connected with CT power circuit unit (9),
Described CT power circuit unit (9) comprising: CT self-powered electric current input unit (28) and debugging power input unit (29), described power input interface (15) comprising: supply current input interface (30) and debugging power input interface (31), described supply current input interface (30) and debug power input interface (31) respectively with described CT self-powered electric current input unit (28) with debug power input unit (29) and be connected.
2. a kind of CT self-powered measuring and controlling protective device according to claim 1, it is characterized in that: described CT sampling unit (5) comprising: zero-sequence current acquisition module (16), first protective current acquisition module (17), second protective current acquisition module (18) and the 3rd protective current acquisition module (19), described sampled signal input interface (11) comprising: zero-sequence current input interface (20), first protective current input interface (21), second protective current input interface (22) and the 3rd protective current input interface (23), described: zero-sequence current input interface (20), first protective current input interface (21), second protective current input interface (22), 3rd protective current input interface (23) respectively with described zero-sequence current acquisition module (16), first protective current acquisition module (17), second protective current acquisition module (18), 3rd protective current acquisition module (19) is connected.
3. a kind of CT self-powered measuring and controlling protective device according to claim 1; it is characterized in that: described switch value input interface (12) comprises non-electric charge quantity signalling input interface (24) and opens into common port interface (25), described non-electric charge quantity signalling input interface (24) is all connected into unit (6) with described opening into common port interface (25) with opening.
4. a kind of CT self-powered measuring and controlling protective device according to claim 1; it is characterized in that: described control signal output interface (13) comprising: actuating signal output interface (26) and direct current dropout output interface (27), described actuating signal output interface (26) and direct current dropout output interface (27) are all connected with described unit (7) of outputing.
5. a kind of CT self-powered measuring and controlling protective device according to claim 1; it is characterized in that: described human and machine interface unit (10) comprises display screen (32), state signal lamp (33) and button (34); described display screen (32) is positioned at the middle part of described front panel (1); described state signal lamp (33) is positioned at the left side of described display screen, and described button (34) is positioned at the right side of described front panel (1).
6. a kind of CT self-powered measuring and controlling protective device according to claim 1, is characterized in that: the backplate (2) of described casing (3) is also provided with device ground interface (35).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281078.5U CN204720970U (en) | 2015-05-05 | 2015-05-05 | A kind of CT self-powered measuring and controlling protective device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520281078.5U CN204720970U (en) | 2015-05-05 | 2015-05-05 | A kind of CT self-powered measuring and controlling protective device |
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| CN204720970U true CN204720970U (en) | 2015-10-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787358A (en) * | 2019-01-18 | 2019-05-21 | 南京深科博业电气股份有限公司 | Self-powered intelligent comprehensive protection location based on Micro USB |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787358A (en) * | 2019-01-18 | 2019-05-21 | 南京深科博业电气股份有限公司 | Self-powered intelligent comprehensive protection location based on Micro USB |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211227 Address after: 518054 11e11, floor 11, Maoye department store building, Wenxin Second Road, Haizhu community, Yuehai street, Shenzhen, Guangdong Patentee after: Shenzhen runshihua R & D Technology Co.,Ltd. Address before: 030006 floor 10, Chenyu building, No. 3, central North Street, high tech Zone, Taiyuan City, Shanxi Province Patentee before: NANZI JINNENG AUTOMATION Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: 518100 3904, venture capital building, No. 9, Tengfei Road, huanggekeng community, Longcheng street, Longgang District, Shenzhen, Guangdong Province Patentee after: Shenzhen runshihua R & D Technology Co.,Ltd. Address before: 518054 11e11, floor 11, Maoye department store building, Wenxin Second Road, Haizhu community, Yuehai street, Shenzhen, Guangdong Patentee before: Shenzhen runshihua R & D Technology Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 3904, venture capital building, 9 Tengfei Road, huanggekeng community, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Runshihua Hydrogen Energy Co.,Ltd. Country or region after: Zhong Guo Address before: 518100 3904, venture capital building, No. 9, Tengfei Road, huanggekeng community, Longcheng street, Longgang District, Shenzhen, Guangdong Province Patentee before: Shenzhen runshihua R & D Technology Co.,Ltd. Country or region before: Zhong Guo |
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| CP03 | Change of name, title or address |