CN106066445A - Voltage transformer open delta circuit breaking monitoring device and application process - Google Patents
Voltage transformer open delta circuit breaking monitoring device and application process Download PDFInfo
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- CN106066445A CN106066445A CN201610432911.0A CN201610432911A CN106066445A CN 106066445 A CN106066445 A CN 106066445A CN 201610432911 A CN201610432911 A CN 201610432911A CN 106066445 A CN106066445 A CN 106066445A
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
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- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses voltage transformer open delta circuit breaking monitoring device and application process, including the fixing ear of totally-enclosed cabinet and installation, it is characterised in that: the front face of described totally-enclosed cabinet is provided with display screen；It is provided with operation keyboard in the downside of display screen；The right side of display screen is provided with signal lamp；It is provided with PCB main board in described totally-enclosed cabinet；The secondary circuit voltage connecting terminal block of 10KV bus it is provided with on the upside of the rear wall of described totally-enclosed cabinet；485 communication terminal rows it are provided with on the downside of the rear wall of described totally-enclosed cabinet；It is provided with Ethernet interface on the right side of the rear wall of described totally-enclosed cabinet.This device and application process, can send warning information in time when broken string occurs in open delta secondary circuit and report and submit scheduling station so that maintainer handles it, the hidden danger of abatement apparatus emerged in operation；Ensure that device monitoring result reliability and sensitivity, ensure that open delta loop zero defect runs.
Description
Technical field
The present invention relates to the improvement of a kind of voltage transformer secondary voltage monitor, specifically a kind of mutual induction of voltage
Device open delta circuit breaking monitoring device and application process.
Background technology
The auxiliary Secondary Winding of voltage transformer is the most end to end but do not close by delta connection, is open delta
Loop；Voltage transformer open delta voltage 3U0It is that the vice-side winding by three-phase transformer joins end to end the voltage formed successively,
As shown in Figure 6, Ua vector, Ub vector, Uc vector head and the tail triangularity connects, but does not closes.Voltage transformer open delta around
Group is when equipment belt load is properly functioning, and port voltage is essentially 1-2V, and outs open triangle winding secondary terminals voltage is zero, when
When there is fuse punch through damage or circuit breaking situation occur in open-triangular winding secondary circuit, because A, B, C three-phase electricity
Pressure is all normal, and open delta voltage exists induced voltage in addition, and its circuit breaking is difficult to be noticeable, the most existing 10kV line
Line protection device or Small Electric Current Earthing And Routing Device all cannot accurately judge whether open-triangular winding secondary circuit occurs breaking
Line.If now there is isolated neutral system singlephase earth fault, fault phase voltage-to-ground reduces to zero, and healthy phases is the most electric
Pressure rises a height of originalTimes, open delta voltage 3U0Voltage is zero after disconnecting, existing Small Electric Current Earthing And Routing Device then because of
Open delta voltage be zero cannot failure judgement bus, bring potential safety hazard to the earthing wire-selecting function of equipment.
By retrieval, Chinese patent CN104535956A discloses one " detection voltage transformer secondary opening three
The method of angle circuit connection/polarity correctness ", it is possible to solve open delta incorrect polarity and cause zero-sequenceprotection misoperation or tripping
The problem made, it is impossible to can promptly and accurately send warning information when broken string occurs in open delta secondary circuit.Have not yet to see
Open delta secondary circuit occurs promptly and accurately judging broken position during broken string and send warning information to report and submit scheduling main in time
Stand so that the report of device handled it of maintainer.
Summary of the invention
It is an object of the invention to provide a kind of interactive interface friendly, it is judged that accurately, Late reformation installs convenient voltage additional
Transformer open delta circuit breaking monitoring device.This voltage transformer open delta circuit breaking monitoring device and application side
Method, can monitor and record three-phase voltage and residual voltage in real time, can be promptly and accurately when broken string occurs in open delta secondary circuit
Send warning information and report and submit scheduling station so that maintainer handles it, the hidden danger of abatement apparatus emerged in operation.
Another object of the present invention is to provide a kind of voltage transformer open delta circuit breaking realizing above-mentioned purpose
The application process of monitoring device.
In order to reach object above, the technical solution adopted in the present invention is: break in this voltage transformer open delta loop
Line monitoring device, ear is fixed in the installation including totally-enclosed cabinet and two ends, it is characterised in that: the header board of described totally-enclosed cabinet
Face is provided with initialization information LCDs；It is provided with operation keyboard in the downside of initialization information LCDs；Initially
The right side of change information LCDs is provided with signal lamp；Communication unit, master control list it is provided with in described totally-enclosed cabinet
Unit, voltage sensor data acquisition unit and the PCB main board of power module；It is provided with on the upside of the rear wall of described totally-enclosed cabinet
The secondary circuit voltage connecting terminal block of 10KV bus；485 communication terminal rows it are provided with on the downside of the rear wall of described totally-enclosed cabinet；
It is provided with Ethernet interface on the right side of the rear wall of described totally-enclosed cabinet；Voltage sensor data acquisition unit, power module and behaviour
Making keyboard and access main control unit, main control unit accesses initialization information LCDs and communication unit；Communication unit is by string
Mouth or Ethernet interface are sent to communication apparatus；Voltage sensor data acquisition unit gathers the secondary circuit voltage of 10KV bus
The U of connecting terminal blockLPhase, ULNPhase, Ua phase, Ub phase, Uc phase and the voltage data of Un phase, voltage transformer exchange A, B, C three-phase
Voltage and open delta voltage enter voltage transformer data acquisition unit after second-order low-pass filter and are converted into digital signal
Input main control unit, the main control unit being made up of high-performance Blackfin series processors and memorizer is by digital signal
Reason logic decision, the current busbar voltage judged and parameters information result are passed through initialization information liquid crystal by main control unit again
Display screen shows, and will deliver to the communication apparatus of scheduling station on signal by communication unit.
The present invention implements also by following measure: described operation keyboard includes return key, downturning key, upturning key, determines
Key, under different menu environment, function is different, is mainly used in parameter setting, switching menu, the information of user interactive.
Described power module is connected with 220V ac/dc power supply.
Described signal lamp has four, respectively run indicator, broken string display lamp, alarm indicator and communication
Display lamp, is all connected with the circuit of main control unit.
The application process of voltage transformer open delta circuit breaking monitoring device, it is characterised in that: complete by following steps
Become:
(1), first the secondary circuit of 10KV bus is accessed voltage wiring terminal row, power supply and 485 communication terminals or network
Interface related layouts is perfect, and on and off switch is placed in ON state, and voltage transformer open delta circuit breaking monitoring device powers on
Properly functioning, run indicator Chang Liang after hardware initialization is complete；
(2), system properly functioning time, vector Ua vector, Ub vector Uc vector sum 3U0Be zero, i.e. ULVector ULNVector
Isoelectric level, measures Ua phase and U the most respectivelyLVoltage between Xiang, then be voltage A phase Secondary Winding voltage；Measure Ub phase and Uc
Voltage, Ub phase and U between XiangLVoltage between Xiang, is all the corresponding single-phase winding voltage of transformer secondary；
(3), broken position is judged: as any one phase voltage and ULTime between Xiang because losing reference value voltage Ux≤40V, then judge
At open delta loop ULThere is broken string in phase side, and broken string display lamp is bright, and alarm indicator is the brightest；As any one phase voltage and UL
Between Xiang during pressure reduction Ux≤40V, then judge at open delta secondary circuit ULTo ULNPhase side joint breaks between place, disconnected
Line display lamp is bright, and alarm indicator is the brightest；As any one phase voltage and ULNBetween Xiang during voltage Ux≤40V, then judge at opening
Triangle loop ULNBreaking in loop after phase side joint place, broken string display lamp is bright, and alarm indicator is the brightest；
(4), under serial port, operating personnel is by serial ports number and baud rate under operation button set-up function menu, logical
After letter successful connection, communication display lamp is bright, it is judged that result that whether open delta loop breaks also will be believed by communication unit
The communication apparatus of scheduling station is delivered on number；
(5), maintainer receive open delta secondary circuit occur broken string time accurate warning information after, handle it immediately,
Get final product the hidden danger of abatement apparatus emerged in operation.
The beneficial effects of the present invention is: this voltage transformer open delta circuit breaking monitoring device and application process,
Can monitor and record three-phase voltage and residual voltage in real time, can promptly and accurately send when broken string occurs in open delta secondary circuit
Warning information also reports and submits scheduling station so that maintainer handles it, the hidden danger of abatement apparatus emerged in operation；This device, peace
Filling and easy to maintenance, have the man machine interface of close friend, communication modes is flexible, by monitoring phase voltage in real time and open delta loop electricity
Pressure reduction and reliably Hardware Design, ensure that device monitoring result reliability and sensitivity, ensure that open delta loop
Zero defect runs.
Accompanying drawing explanation
Fig. 1 is that the structure master of the present invention cuts open schematic diagram depending on office.
Fig. 2 is the structure PCB main board schematic top plan view of the present invention.
Fig. 3 is the structure schematic rear view of the present invention.
Fig. 4 is the structural circuit theory diagram of the present invention.
Fig. 5 is the structure main control unit logic decision schematic diagram of the present invention.
Fig. 6 is the auxiliary Secondary Winding circuit theory schematic diagram of the structure voltage transformer of the present invention.
Detailed description of the invention
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 give one embodiment of the present of invention.
This voltage transformer open delta circuit breaking monitoring device, the installation including totally-enclosed cabinet 1 and two ends is fixed
Ear 2, is fixed on switch cubicle or sealer by installing fixing ear 2, it is characterised in that: before described totally-enclosed cabinet 1
Plate face is provided with initialization information LCDs 3；Operation keyboard 4 it is provided with in the downside of initialization information LCDs 3；?
The right side of initialization information LCDs 3 is provided with signal lamp 5；It is provided with communication unit in described totally-enclosed cabinet 1
61, the PCB main board 6 of main control unit 62, voltage sensor data acquisition unit 63 and power module 64；Described totally-enclosed cabinet
The secondary circuit voltage connecting terminal block 7 of 10KV bus it is provided with on the upside of the rear wall of 1；On the downside of the rear wall of described totally-enclosed cabinet 1
It is provided with 485 communication terminal rows 8；It is provided with Ethernet interface 9 on the right side of the rear wall of described totally-enclosed cabinet 1；Voltage sensor data
Collecting unit 63, power module 64 and operation keyboard 4 access main control unit 62, and main control unit 62 accesses initialization information liquid crystal
Display screen 3 and communication unit 61；Communication unit 61 is sent to communication apparatus 65 by serial ports or Ethernet interface 9；Voltage sensor
Data acquisition board 63 gathers the U of the secondary circuit voltage connecting terminal block 7 of 10KV busLPhase, ULNPhase, Ua phase, Ub phase, Uc phase
With the voltage data of Un phase, voltage transformer exchange A, B, C three-phase voltage and open delta voltage are after second-order low-pass filter
Enter voltage transformer data acquisition unit 63 and be converted into digital signal input main control unit 62, by high-performance Blackfin series
Digital signal is carried out processing logic decision by the main control unit 62 that processor and memorizer are constituted, and main control unit 62 is again by judgement
Current busbar voltage and parameters information result are shown by initialization information LCDs 3, and by communication unit 61
The communication apparatus 65 of scheduling station will be delivered on signal.
The present invention implements also by following measure: described operation keyboard 4 includes return key, downturning key, upturning key, determines
Key, under different menu environment, function is different, is mainly used in parameter setting, switching menu, the information of user interactive.
Described power module 64 is connected with 220V ac/dc power supply.
Described signal lamp 5 has four, respectively run indicator 51, broken string display lamp 52, alarm indicator
53 and communication display lamp 54, all circuit with main control unit 62 be connected.
The application process of voltage transformer open delta circuit breaking monitoring device, it is characterised in that: complete by following steps
Become:
(1), first the secondary circuit of 10KV bus is accessed voltage wiring terminal row 7, power supply and 485 communication terminal 8 or nets
Network interface 9 related layouts is perfect, on and off switch is placed in ON state, in voltage transformer open delta circuit breaking monitoring device
Electricity is properly functioning, run indicator 51 Chang Liang after hardware initialization is complete；
(2), system properly functioning time, vector Ua vector, Ub vector Uc vector sum 3U0Be zero, i.e. ULVector ULNVector
Isoelectric level, measures Ua phase and U the most respectivelyLVoltage between Xiang, then be voltage A phase Secondary Winding voltage；Measure Ub phase and Uc
Voltage, Ub phase and U between XiangLVoltage between Xiang, is all the corresponding single-phase winding voltage of transformer secondary；
(3), broken position is judged: as any one phase voltage and ULTime between Xiang because losing reference value voltage Ux≤40V, then judge
At open delta loop ULThere is broken string in phase side, and broken string display lamp 52 is bright, and alarm indicator 53 is the brightest；When any one phase voltage
With ULBetween Xiang during pressure reduction Ux≤40V, then judge at open delta secondary circuit ULTo ULNOccur disconnected between phase side joint place
Line, broken string instruction 52 lamps are bright, and alarm indicator 53 is the brightest；As any one phase voltage and ULNBetween Xiang during voltage Ux≤40V, then sentence
Break at open delta loop ULNBreaking in loop after phase side joint place, broken string instruction 52 lamps are bright, alarm indicator 53
The brightest；
(4), under serial port, operating personnel is by serial ports number and baud rate under operation button 4 set-up function menu, logical
After letter successful connection, communication display lamp 54 is bright, it is judged that result that whether open delta loop breaks also passes through communication unit 61
The communication apparatus 65 of scheduling station will be delivered on signal；
(5), maintainer receive open delta secondary circuit occur broken string time accurate warning information after, handle it immediately,
Get final product the hidden danger of abatement apparatus emerged in operation.
Claims (4)
1. voltage transformer open delta circuit breaking monitoring device, ear is fixed in the installation including totally-enclosed cabinet (1) and two ends
(2), it is characterised in that: the front face of described totally-enclosed cabinet (1) is provided with initialization information LCDs (3)；Just
The downside of beginning information LCDs (3) is provided with operation keyboard (4)；Set on the right side of initialization information LCDs (3)
There is signal lamp (5)；Communication unit (61), main control unit (62), voltage induced it is provided with in described totally-enclosed cabinet (1)
The PCB main board (6) of device data acquisition unit (63) and power module (64)；Set on the upside of the rear wall of described totally-enclosed cabinet (1)
There is the secondary circuit voltage connecting terminal block (7) of 10KV bus；It is provided with 485 on the downside of the rear wall of described totally-enclosed cabinet (1) to lead to
News terminal block (8)；It is provided with Ethernet interface (9) on the right side of the rear wall of described totally-enclosed cabinet (1)；Voltage sensor data acquisition
Unit (63), power module (64) and operation keyboard (4) access main control unit (62), and main control unit (62) accesses initialization information
LCDs (3) and communication unit (61)；Communication unit (61) is sent to communication apparatus by serial ports or Ethernet interface (9)
(65)；Voltage sensor data acquisition unit (63) gathers the U of the secondary circuit voltage connecting terminal block (7) of 10KV busL
Phase, ULNPhase, Ua phase, Ub phase, Uc phase and the voltage data of Un phase, voltage transformer exchange A, B, C three-phase voltage and open delta
Voltage enters voltage transformer data acquisition unit (63) after second-order low-pass filter and is converted into digital signal input master control list
Unit (62), digital signal is processed by the main control unit being made up of high-performance Blackfin series processors and memorizer (62)
Logic decision, the current busbar voltage judged and parameters information result are passed through initialization information liquid by main control unit (62) again
Crystal display screen (3) shows, and will deliver to the communication apparatus (65) of scheduling station on signal by communication unit (61).
Voltage transformer open delta circuit breaking monitoring device the most according to claim 1, it is characterised in that: described
Power module (64) is connected with 220V ac/dc power supply.
Voltage transformer open delta circuit breaking monitoring device the most according to claim 1, it is characterised in that: described
Signal lamp (5) has four, respectively run indicator (51), broken string display lamp (52), alarm indicator (53) and lead to
News display lamp (54), all circuit with main control unit (62) are connected.
4. the application process of voltage transformer open delta circuit breaking monitoring device, it is characterised in that: completed by following steps:
(1), first the secondary circuit of 10KV bus is accessed voltage wiring terminal row (7), power supply and 485 communication terminals (8) or
Person's network interface (9) related layouts is perfect, and on and off switch is placed in ON state, and voltage transformer open delta circuit breaking is monitored
Device powers on properly functioning, run indicator (51) Chang Liang after hardware initialization is complete；
(2), system properly functioning time, vector Ua vector, Ub vector Uc vector sum 3U0Be zero, i.e. ULVector ULNVector etc.
Current potential, measures Ua phase and U the most respectivelyLVoltage between Xiang, then be voltage A phase Secondary Winding voltage；Measure Ub phase and Uc phase
Between voltage, Ub phase and ULVoltage between Xiang, is all the corresponding single-phase winding voltage of transformer secondary；
(3), broken position is judged: as any one phase voltage and ULTime between Xiang because losing reference value voltage Ux≤40V, then judge
At open delta loop ULThere is broken string in phase side, and broken string display lamp (52) is bright, and alarm indicator (53) is the brightest；When any one phase
Voltage and ULBetween Xiang during pressure reduction Ux≤40V, then judge at open delta secondary circuit ULTo ULNSend out between phase side joint place
Raw broken string, broken string instruction (52) lamp is bright, and alarm indicator (53) is the brightest；As any one phase voltage and ULNVoltage Ux between Xiang≤
During 40V, then judge at open delta loop ULNBreaking in loop after phase side joint place, broken string instruction (52) lamp is bright,
Alarm indicator (53) is the brightest；
(4), under serial port, operating personnel by operation button (4) set-up function menu under serial ports number and baud rate,
After communication successful connection, communication display lamp (54) is bright, it is judged that result that whether open delta loop breaks also passes through communication unit
Unit (61) will deliver to the communication apparatus (65) of scheduling station on signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610432911.0A CN106066445B (en) | 2016-06-17 | 2016-06-17 | Open triangular loop broken line monitoring device of voltage transformer and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610432911.0A CN106066445B (en) | 2016-06-17 | 2016-06-17 | Open triangular loop broken line monitoring device of voltage transformer and application method |
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| Publication Number | Publication Date |
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| CN106066445A true CN106066445A (en) | 2016-11-02 |
| CN106066445B CN106066445B (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610432911.0A Active CN106066445B (en) | 2016-06-17 | 2016-06-17 | Open triangular loop broken line monitoring device of voltage transformer and application method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109255453A (en) * | 2018-11-20 | 2019-01-22 | 国网辽宁省电力有限公司葫芦岛供电公司 | A kind of marketing equipment operation tracking device |
| CN110658377A (en) * | 2019-10-23 | 2020-01-07 | 国网山西省电力公司阳泉供电公司 | Voltage secondary opening triangular loop monitoring device |
| CN113030834A (en) * | 2021-04-19 | 2021-06-25 | 北京送变电有限公司 | Transformer secondary circuit line calibration device and method |
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| CN109255453A (en) * | 2018-11-20 | 2019-01-22 | 国网辽宁省电力有限公司葫芦岛供电公司 | A kind of marketing equipment operation tracking device |
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| CN113030834A (en) * | 2021-04-19 | 2021-06-25 | 北京送变电有限公司 | Transformer secondary circuit line calibration device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106066445B (en) | 2023-04-25 |
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