CN107329035A - A kind of quick examination pulling method of automatic dispatching system small current ground connection and system - Google Patents
A kind of quick examination pulling method of automatic dispatching system small current ground connection and system Download PDFInfo
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- CN107329035A CN107329035A CN201710640442.6A CN201710640442A CN107329035A CN 107329035 A CN107329035 A CN 107329035A CN 201710640442 A CN201710640442 A CN 201710640442A CN 107329035 A CN107329035 A CN 107329035A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16547—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies voltage or current in AC supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
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Abstract
The invention discloses a kind of quick examination pulling method of automatic dispatching system small current ground connection and system, judge occur the bus of small current neutral grounding, be set to small current neutral grounding state, send bus small current neutral grounding alarm signal；The station wiring diagram according to where alarm signal positions the bus, then connects wire-outgoing breaker for the bus and carries out distant place control point operation, when the distant place control point of certain wire-outgoing breaker is operated successfully, send control point success message；Whether cycle detection receives the successful message of control point, after wire-outgoing breaker control point success message is received, issues the breaker control and closes execute instruction；Current all buses in small current neutral grounding state are obtained, when judging that these buses are normal from the recovery of small current neutral grounding state, then bus normal condition is set to, while finding small current neutral grounding circuit, and sends bus small current neutral grounding recovery alarm signal.The unplanned power off time of user is greatly shortened in the present invention, reduces the unplanned social influence for having a power failure and bringing.
Description
Technical field
The invention belongs to electric power network technique field, and in particular to a kind of quick examination drawing side of automatic dispatching system small current ground connection
Method and system.
Background technology
At present, it is for occurring small current neutral grounding processing overview in power network：Monitoring person on duty reports auxiliary tone after finding ground connection,
By auxiliary tone according to drawing road order to order one by one to control and monitor console, monitor pulls open run switch according to auxiliary tone order, according to bus electricity
Pressure remote measurement, ground connection alarm window remote signalling judge whether the circuit is the anomalous line being grounded, if the circuit pull open rear remote signalling,
Remote measurement is unchanged, illustrates that the circuit is no ground, and manual remote control, which is closed, pulls open switch, and user restores electricity, to customer outage hours
About a few minutes to more than ten minutes；If pulled open after certain circuit, remote measurement, remote signalling recover normal, it was demonstrated that ground connection occurs at this
On circuit, monitoring person on duty reports auxiliary tone dispatcher, continues to run with as needed or turns maintenance.Completion whole process aligns conventional
Family power off time is up to 2-3 minutes, is greatly reduced electricity consumption reliability, is caused substantial amounts of customer complaint.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of quick examination pulling method of automatic dispatching system small current ground connection and is
System, can solve the problem that quick detection and disposal in the case of small current neutral grounding occur for low-voltage-grade bus, user is greatly shortened non-
The scheduled outage time, the unplanned social influence for having a power failure and bringing is reduced, technical support is provided for electric power netting safe running.
Above-mentioned technical purpose is realized, above-mentioned technique effect is reached, the present invention is achieved through the following technical solutions：
A kind of quick examination pulling method of automatic dispatching system small current ground connection, comprises the following steps：
S1：Judge whether bus occurs small current neutral grounding, when small current neutral grounding occurs for bus, bus is set to low current
Ground state, and send bus small current neutral grounding alarm signal；
S2：Station wiring diagram where the bus for navigating to the generation small current neutral grounding according to alarm signal, is then directed to
The bus connects wire-outgoing breaker and carries out distant place control point operation, when the distant place control point of certain wire-outgoing breaker is operated successfully, hair
Send control point success message；
S3：Whether cycle detection receives the successful message of control point, after wire-outgoing breaker control point success message is received,
The breaker control is issued at once closes execute instruction；
S4：The bus that current quick examination is drawn is obtained, when judging that the bus recovers from small current neutral grounding state
Normally, then bus is set to normal condition, while finding small current neutral grounding circuit, and sends bus small current neutral grounding recovery alarm
Signal, terminates bus small current neutral grounding and quickly tries to draw；Otherwise continue to detect until all outlet switch examination drawknots on the bus
Beam.
Further, the step S1 specifically includes following steps：
S101：The small power supply ground connection abnormal signal of all buses, bus zero sequence in the current automatic dispatching system of cycle detection
Magnitude of voltage and bus three-phase voltage equilibrium valve；
S102：Judge whether whether bus small power supply ground connection abnormal signal big in operating state, bus residual voltage value
Judge whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are more than small current neutral grounding and judge in small current neutral grounding
During three-phase voltage injustice rate threshold value, when foregoing three Rule of judgment are satisfied by, then judge that small current neutral grounding occurs for bus；
S103：Bus is set to small current neutral grounding state, and sends bus small current neutral grounding alarm signal.
Further, in the step S2, connect wire-outgoing breaker for the bus and carry out distant place control point operation, when
When the distant place control point of certain wire-outgoing breaker is operated successfully, send control point success message and specifically include following steps：
S201：Start the control point operation of wire-outgoing breaker, input wire-outgoing breaker numbering is confirmed, is sent out after confirmation is correct
Monitoring is sent to ask；
S202：Receive after monitoring request, input wire-outgoing breaker numbering is confirmed, confirm that successfully then return monitoring is logical
Cross message；
S203：Receive monitoring to pass through after message, issue wire-outgoing breaker control point execute instruction；
S204：Whether cycle detection wire-outgoing breaker, which is controlled, is divided into work(, if not receiving correspondence breaker at the appointed time
Sub-gate signal, then control point failure, terminates the examination pulling process of this circuit, continues next circuit examination pulling process；If in the stipulated time
Correspondence breaker open operation signal is inside received, then control is divided into work(, and sends control point success message.
Further, the step S3 also includes：Whether cycle detection receives the successful message of control point, if not receiving
Wire-outgoing breaker control point success message, then continue to examine.
Further, when judging that these buses are normal from the recovery of small current neutral grounding state in the step S4, specifically
Deterministic process is：
Detect small power supply ground connection abnormal signal, bus residual voltage value and the bus three-phase voltage equilibrium valve of bus；
Judge whether whether bus small power supply ground connection abnormal signal be less than small electricity in involution state, bus residual voltage value
Stream ground connection judges whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are less than small current neutral grounding and judge three-phase electricity
Press unbalance factor threshold value；
If meeting any one in foregoing three conditions, judge that the bus recovers normal from small current neutral grounding state.
Further, the step S4 also includes：When judging that the bus do not recover normal from small current neutral grounding state, then after
Continuous detection is until outlet switch examination drawknot beam on all buses.
A kind of quick examination pull system of automatic dispatching system small current ground connection, including small current neutral grounding monitoring determination module,
Alerting service module, small current neutral grounding circuit distant place control sub-module, small current neutral grounding circuit rapid closing module and low current connect
Ground involution detection module；
The small current neutral grounding monitors determination module, for judging whether bus occurs small current neutral grounding, when bus occurs
During small current neutral grounding, bus is set to small current neutral grounding state, and send bus small current neutral grounding alarm signal to alerting service
Module；
Sub-module is controlled in the small current neutral grounding circuit distant place, is navigated to for the alarm signal in alerting service module
Station wiring diagram where the bus for occurring small current neutral grounding, then connects wire-outgoing breaker for the bus and carries out a distant place
Control point operation, when the distant place control point of certain wire-outgoing breaker is operated successfully, sends control point success message；
Whether the small current neutral grounding circuit rapid closing module, the successful message of control point is received for cycle detection,
After wire-outgoing breaker control point success message is received, the breaker control is issued at once and closes execute instruction；
The small current neutral grounding involution detection module, for obtaining current all buses in small current neutral grounding state,
When judging that these buses are normal from the recovery of small current neutral grounding state, then bus is set to normal condition, while finding small electricity
Ground path is flowed, and sends bus small current neutral grounding and recovers alarm signal, terminates bus small current neutral grounding and quickly tries to draw；Otherwise after
Continuous detection is until outlet switch examination drawknot beam on all buses.
Further, it is described to judge whether bus occurs small current neutral grounding, when small current neutral grounding occurs for bus, by bus
Small current neutral grounding state is set to, and sends bus small current neutral grounding alarm signal, is specially：
S101：The small power supply ground connection abnormal signal of all buses, bus zero sequence in the current automatic dispatching system of cycle detection
Magnitude of voltage and bus three-phase voltage equilibrium valve；
S102：Judge whether whether bus small power supply ground connection abnormal signal big in operating state, bus residual voltage value
Judge whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are more than small current neutral grounding and judge in small current neutral grounding
During three-phase voltage injustice rate threshold value, when foregoing three Rule of judgment are satisfied by, then judge that small current neutral grounding occurs for bus；
S103：Bus is set to small current neutral grounding state, and sends bus small current neutral grounding alarm signal.
Further, it is described to connect the control point operation of a wire-outgoing breaker progress distant place for the bus, when certain outlet open circuit
When the distant place control point of device is operated successfully, control point success message is sent, is specially：
S201：Start the control point operation of wire-outgoing breaker, input wire-outgoing breaker numbering is confirmed, is sent out after confirmation is correct
Monitoring is sent to ask；
S202：Receive after monitoring request, input wire-outgoing breaker numbering is confirmed, confirm that successfully then return monitoring is logical
Cross message；
S203：Receive monitoring to pass through after message, issue wire-outgoing breaker control point execute instruction；
S204：Whether cycle detection wire-outgoing breaker, which is controlled, is divided into work(, if not receiving correspondence breaker at the appointed time
Sub-gate signal, then control point failure, terminates the examination pulling process of this circuit, continues next circuit examination pulling process；If in the stipulated time
Correspondence breaker open operation signal is inside received, then control is divided into work(, and sends control point success message.
Further, it is described to judge that these buses recover normal from small current neutral grounding state, specific deterministic process
For：
Detect small power supply ground connection abnormal signal, bus residual voltage value and the bus three-phase voltage equilibrium valve of bus；
Judge whether whether bus small power supply ground connection abnormal signal be less than small electricity in involution state, bus residual voltage value
Stream ground connection judges whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are less than small current neutral grounding and judge three-phase electricity
Press unbalance factor threshold value；
If meeting any one in foregoing three conditions, judge that the bus recovers normal from small current neutral grounding state.
Beneficial effects of the present invention：
The present invention proposes a kind of quick examination pulling method of automatic dispatching system small current ground connection and system, realizes examination and is pulled through
Quick division in journey, can solve the problem that quick detection and disposal in the case of small current neutral grounding occur for low-voltage-grade bus, significantly
The unplanned power off time of user (being reduced to 3-5 seconds from original 2-3 minutes) is shortened, the unplanned society for having a power failure and bringing is reduced
It can influence, technical support is provided for electric power netting safe running.
Brief description of the drawings
Fig. 1 quickly tries the flow chart of pulling method for the automatic dispatching system small current ground connection of an embodiment of the present invention；
Fig. 2 quickly tries the structural representation of pull system for the automatic dispatching system small current ground connection of an embodiment of the present invention
Figure.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
Due in the prior art, being up to for occurring small current neutral grounding processing procedure in power network to normal users power off time
2-3 minutes, so as to greatly reduce electricity consumption reliability, substantial amounts of customer complaint is caused, therefore, the present invention proposes a kind of automatic
The quick examination pulling method of scheduling system small current ground connection and system, can solve the problem that small current neutral grounding feelings occur for low-voltage-grade bus
Quick detection and disposal, are greatly shortened the unplanned power off time of user (using the method for the present invention, when can be by having a power failure under condition
Between foreshorten to 3-5 seconds), reduce the unplanned social influence that brings of having a power failure, technical support provided for electric power netting safe running.
Embodiment 1
As shown in figure 1, a kind of quick examination pulling method of automatic dispatching system small current ground connection, comprises the following steps：
S1：Judge whether below 10kV low-voltage bus occurs small current neutral grounding, will when small current neutral grounding occurs for bus
Bus is set to small current neutral grounding state, and sends bus small current neutral grounding alarm signal；
In specific implementation process, comprise the following steps：
S101：The small power supply ground connection of all below 10kV low-voltage bus is abnormal in the current automatic dispatching system of cycle detection
Signal, bus residual voltage value and bus three-phase voltage equilibrium valve；
S102：Judge whether whether bus small power supply ground connection abnormal signal big in operating state, bus residual voltage value
Judge whether bus residual voltage threshold value (default value is 15V), bus imbalance of three-phase voltage rate are more than in small current neutral grounding
When small current neutral grounding judges three-phase voltage injustice rate threshold value (default value is 10%), when foregoing three Rule of judgment are satisfied by
When, then judge that small current neutral grounding occurs for bus；Otherwise judge that small current neutral grounding does not occur for bus；
S103：When judging that small current neutral grounding occurs for bus, bus is set to small current neutral grounding state, and it is small to send bus
Current earthing alarm signal.
S2：Station wiring diagram where the bus for navigating to the generation small current neutral grounding according to alarm signal, is then directed to
The bus connects wire-outgoing breaker and carries out distant place control point operation, when the distant place control point of certain wire-outgoing breaker is operated successfully, hair
Send control point success message；
Wherein, connect wire-outgoing breaker for the bus and carry out distant place control point operation, when a distant place for certain wire-outgoing breaker
When control point is operated successfully, the specific implementation process for sending control point success message is：
S201：Regulation and control person starts the control point operation of wire-outgoing breaker, and input wire-outgoing breaker numbering is confirmed, is confirmed just
Monitoring request is sent after really to monitor；
S202：Monitor is received after monitoring request, and input wire-outgoing breaker numbering is confirmed, confirms successfully then to return
Monitoring is by message to regulation and control person；
S203：Regulation and control person receives monitoring and passed through after message, issues wire-outgoing breaker control point execute instruction；
S204：After instruction is issued, whether cycle detection wire-outgoing breaker, which is controlled, is divided into work(, if not receiving at the appointed time
Correspondence breaker open operation signal, then control point failure, terminates the examination pulling process of this circuit, continues next circuit examination pulling process；If
Correspondence breaker open operation signal is received at the appointed time, then control is divided into work(, and sends control point success message.
S3：Whether cycle detection receives the successful message of control point, after wire-outgoing breaker control point success message is received,
The breaker control is issued at once closes execute instruction；Continue detection if wire-outgoing breaker control point success message is not received by；
S4：Below the 10kV low-voltage bus that quick examination is drawn is obtained, when judging that the bus connects from low current
Ground state recovers normal, then bus is set into normal condition, while find small current neutral grounding circuit, and sends bus low current and connect
Ground recovers alarm signal, terminates bus small current neutral grounding and quickly tries to draw；Otherwise continue to detect until all outlets on the bus
Switch examination drawknot beam；
It is therein to judge that these buses recover normal specific deterministic process from small current neutral grounding state and have been：
Detect small power supply ground connection abnormal signal, bus residual voltage value and the bus three-phase voltage equilibrium valve of bus；
Judge whether whether bus small power supply ground connection abnormal signal be less than small electricity in involution state, bus residual voltage value
Stream ground connection judges whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are less than small current neutral grounding and judge three-phase electricity
Press unbalance factor threshold value；
If meeting any one in foregoing three conditions, judge that the bus recovers normal from small current neutral grounding state；It is no
Then judge that the bus does not recover normal from small current neutral grounding state.
Embodiment 2
As shown in Fig. 2 a kind of quick examination pull system of automatic dispatching system small current ground connection, it is characterised in that：Including small
Current earthing monitoring determination module, alerting service module, small current neutral grounding circuit distant place control sub-module, small current neutral grounding circuit are fast
Fast combined floodgate module and small current neutral grounding involution detection module；
All low electricity of below 10kV in the small current neutral grounding monitoring current automatic dispatching system of determination module cycle detection
Small power supply ground connection abnormal signal, bus residual voltage value and the bus three-phase voltage equilibrium valve of bus are pressed, if bus small power supply connects
Ground abnormal signal is in operating state, bus residual voltage value and judges that bus residual voltage threshold value is (silent more than small current neutral grounding
Recognize value for 15V), bus imbalance of three-phase voltage rate is more than small current neutral grounding and judges the uneven rate threshold value (default value of three-phase voltage
10%), then to judge that small current neutral grounding occurs for bus, bus is set to small current neutral grounding state, and send out to alerting service module
Send bus small current neutral grounding alarm signal；
In the small current neutral grounding circuit distant place control sub-module, alarm signal of the regulation and control person in alerting service module is straight
Connect and navigate to station wiring diagram where generation small current neutral grounding bus；Regulation and control person connects wire-outgoing breaker for the bus and entered one by one
The control point operation of a row distant place, regulation and control person's startup wire-outgoing breaker control point operation, input breaker numbering is confirmed, after confirming correctly
Monitoring request is sent to monitor；Monitor is received after monitoring request, and input breaker numbering is confirmed, confirms successfully then to return
Monitoring is returned by message to regulation and control person, regulation and control person receives monitoring can issue breaker control point execute instruction by message；Instruction
After issuing, whether cycle detection wire-outgoing breaker, which is controlled, is divided into work(, if not receiving correspondence breaker open operation letter at the appointed time
Number, then control point failure terminates the examination pulling process of this circuit, continues next circuit examination pulling process；If receiving at the appointed time
To correspondence breaker open operation signal, then control and be divided into work(, and be divided into work(to the transmission control of small current neutral grounding circuit rapid closing module and disappear
Breath；
Small current neutral grounding circuit rapid closing Module cycle detects whether to receive small current neutral grounding circuit distant place control point mould
The successful message of control point that block is sent, inspection is continued if breaker control point success message is not received by；If receiving breaker
After control point success message, the breaker control is issued at once and closes execute instruction；
Small current neutral grounding involution detection module obtains current all buses in small current neutral grounding state, detects that these are female
Small power supply ground connection abnormal signal, bus residual voltage value and the bus three-phase voltage equilibrium valve of line, judge that bus small power supply is grounded
Whether whether abnormal signal be less than small current neutral grounding judgement bus residual voltage threshold in involution state, bus residual voltage value
Whether value, bus imbalance of three-phase voltage rate, which are less than small current neutral grounding, judges imbalance of three-phase voltage rate threshold value, if three bars
Part meets any one, then judges that the bus recovers normal from small current neutral grounding state, bus is set into normal condition, found small
Current earthing circuit, and bus small current neutral grounding recovery alarm is sent to alerting service module, the bus small current neutral grounding is quick
Try drawknot beam；Otherwise continue to detect until outlet switch tries drawknot beam on all buses.
In summary：
The present invention proposes a kind of quick examination pulling method of automatic dispatching system small current ground connection and system, realizes examination and is pulled through
Quick division in journey, can solve the problem that quick detection and disposal in the case of small current neutral grounding occur for low-voltage-grade bus, significantly
The unplanned power off time of user (being reduced to 3-5 seconds from original 2-3 minutes) is shortened, the unplanned society for having a power failure and bringing is reduced
It can influence, technical support is provided for electric power netting safe running.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of quick examination pulling method of automatic dispatching system small current ground connection, it is characterised in that comprise the following steps：
S1：Judge whether bus occurs small current neutral grounding, when small current neutral grounding occurs for bus, bus is set to small current neutral grounding
State, and send bus small current neutral grounding alarm signal；
S2：Station wiring diagram where the bus for navigating to the generation small current neutral grounding according to alarm signal, then for described
Bus connects wire-outgoing breaker and carries out distant place control point operation, when the distant place control point of certain wire-outgoing breaker is operated successfully, sends control
Divide success message；
S3：Whether cycle detection receives the successful message of control point, after wire-outgoing breaker control point success message is received, at once
Issue the breaker control and close execute instruction；
S4：The bus that current quick examination is drawn is obtained, when judging that the bus recovered normal from small current neutral grounding state,
Bus is then set to normal condition, while find small current neutral grounding circuit, and bus small current neutral grounding is sent and recovers alarm signal,
Terminate bus small current neutral grounding quickly to try to draw；Otherwise continue to detect until all outlet switch examination drawknot beams on the bus.
2. a kind of quick examination pulling method of automatic dispatching system small current ground connection according to claim 1, it is characterised in that：
The step S1 specifically includes following steps：
S101：The small power supply ground connection abnormal signal of all buses, bus residual voltage in the current automatic dispatching system of cycle detection
Value and bus three-phase voltage equilibrium valve；
S102：Judge whether whether bus small power supply ground connection abnormal signal be in operating state, bus residual voltage value more than small
Current earthing judges whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are more than small current neutral grounding and judge three-phase
During voltage injustice rate threshold value, when foregoing three Rule of judgment are satisfied by, then judge that small current neutral grounding occurs for bus；
S103：Bus is set to small current neutral grounding state, and sends bus small current neutral grounding alarm signal.
3. a kind of quick examination pulling method of automatic dispatching system small current ground connection according to claim 1, it is characterised in that：
In the step S2, connect wire-outgoing breaker for the bus and carry out distant place control point operation, when certain wire-outgoing breaker
Distant place control when point operate successfully, send to control and divide a success message to specifically include following steps：
S201：Start the control point operation of wire-outgoing breaker, input wire-outgoing breaker numbering is confirmed, prison is sent after confirmation is correct
Shield request；
S202：Receive after monitoring request, input wire-outgoing breaker numbering is confirmed, confirm successfully then to return monitoring by disappearing
Breath；
S203：Receive monitoring to pass through after message, issue wire-outgoing breaker control point execute instruction；
S204：Whether cycle detection wire-outgoing breaker, which is controlled, is divided into work(, if not receiving correspondence breaker open operation at the appointed time
Signal, then control point failure, terminates the examination pulling process of this circuit, continues next circuit examination pulling process；If connecing at the appointed time
Correspondence breaker open operation signal is received, then control is divided into work(, and sends control point success message.
4. a kind of quick examination pulling method of automatic dispatching system small current ground connection according to claim 1, it is characterised in that：
The step S3 also includes：Whether cycle detection receives the successful message of control point, if not receiving wire-outgoing breaker control
Divide success message, then continue to examine.
5. a kind of quick examination pulling method of automatic dispatching system small current ground connection according to claim 1, it is characterised in that：
When judging that these buses are normal from the recovery of small current neutral grounding state in the step S4, specific deterministic process is：
Detect small power supply ground connection abnormal signal, bus residual voltage value and the bus three-phase voltage equilibrium valve of bus；
Judge whether whether bus small power supply ground connection abnormal signal connect in involution state, bus residual voltage value less than low current
Ground judges whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are less than small current neutral grounding and judge three-phase voltage not
Balanced ratio threshold value；
If meeting any one in foregoing three conditions, judge that the bus recovers normal from small current neutral grounding state.
6. a kind of automatic dispatching system small current ground connection is quick according to claim 1 or 5 tries pulling method, its feature exists
In：The step S4 also includes：When judging that the bus is normal not from the recovery of small current neutral grounding state, then continue to detect until all
Outlet switch tries drawknot beam on bus.
7. a kind of quick examination pull system of automatic dispatching system small current ground connection, it is characterised in that：Including small current neutral grounding monitoring
Determination module, alerting service module, a small current neutral grounding circuit distant place control sub-module, small current neutral grounding circuit rapid closing module and
Small current neutral grounding involution detection module；
The small current neutral grounding monitors determination module, for judging whether bus occurs small current neutral grounding, when small electricity occurs for bus
During stream ground connection, bus is set to small current neutral grounding state, and send bus small current neutral grounding alarm signal to alerting service module；
Sub-module is controlled in the small current neutral grounding circuit distant place, navigate to for the alarm signal in alerting service module described in
Occurs station wiring diagram where the bus of small current neutral grounding, then connecting wire-outgoing breaker for the bus carries out distant place control point
Operation, when the distant place control point of certain wire-outgoing breaker is operated successfully, sends control point success message；
Whether the small current neutral grounding circuit rapid closing module, a control point successful message is received for cycle detection, when connecing
Receive after wire-outgoing breaker control point success message, the breaker control is issued at once and closes execute instruction；
The small current neutral grounding involution detection module, for obtaining current all buses in small current neutral grounding state, when sentencing
Break and these buses and recover normal from small current neutral grounding state, then bus is set to normal condition, connect while finding low current
Ground circuit, and bus small current neutral grounding recovery alarm signal is sent, terminate bus small current neutral grounding and quickly try to draw；Otherwise continue to examine
Survey until outlet switch tries drawknot beam on all buses.
8. a kind of quick examination pull system of automatic dispatching system small current ground connection according to claim 7, it is characterised in that：
It is described to judge whether bus occurs small current neutral grounding, when small current neutral grounding occurs for bus, bus is set to low current and connect
Ground state, and bus small current neutral grounding alarm signal is sent, it is specially：
S101：The small power supply ground connection abnormal signal of all buses, bus residual voltage in the current automatic dispatching system of cycle detection
Value and bus three-phase voltage equilibrium valve；
S102：Judge whether whether bus small power supply ground connection abnormal signal be in operating state, bus residual voltage value more than small
Current earthing judges whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are more than small current neutral grounding and judge three-phase
During voltage injustice rate threshold value, when foregoing three Rule of judgment are satisfied by, then judge that small current neutral grounding occurs for bus；
S103：Bus is set to small current neutral grounding state, and sends bus small current neutral grounding alarm signal.
9. a kind of quick examination pull system of automatic dispatching system small current ground connection according to claim 7, it is characterised in that：
It is described to connect the control point operation of a wire-outgoing breaker progress distant place for the bus, when the distant place control of certain wire-outgoing breaker divides behaviour
When succeeding, control point success message is sent, is specially：
S201：Start the control point operation of wire-outgoing breaker, input wire-outgoing breaker numbering is confirmed, prison is sent after confirmation is correct
Shield request；
S202：Receive after monitoring request, input wire-outgoing breaker numbering is confirmed, confirm successfully then to return monitoring by disappearing
Breath；
S203：Receive monitoring to pass through after message, issue wire-outgoing breaker control point execute instruction；
S204：Whether cycle detection wire-outgoing breaker, which is controlled, is divided into work(, if not receiving correspondence breaker open operation at the appointed time
Signal, then control point failure, terminates the examination pulling process of this circuit, continues next circuit examination pulling process；If connecing at the appointed time
Correspondence breaker open operation signal is received, then control is divided into work(, and sends control point success message.
10. a kind of quick examination pull system of automatic dispatching system small current ground connection according to claim 7, its feature exists
In：
Described to judge that these buses recover normal from small current neutral grounding state, specific deterministic process is：
Detect small power supply ground connection abnormal signal, bus residual voltage value and the bus three-phase voltage equilibrium valve of bus；
Judge whether whether bus small power supply ground connection abnormal signal connect in involution state, bus residual voltage value less than low current
Ground judges whether bus residual voltage threshold value, bus imbalance of three-phase voltage rate are less than small current neutral grounding and judge three-phase voltage not
Balanced ratio threshold value；
If meeting any one in foregoing three conditions, judge that the bus recovers normal from small current neutral grounding state.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167701A (en) * | 2017-03-06 | 2017-09-15 | 国网浙江义乌市供电公司 | Automatically method is sentenced in choosing to distribution singlephase earth fault circuit |
| CN108008248A (en) * | 2017-11-27 | 2018-05-08 | 国网安徽省电力公司黄山供电公司 | A kind of busbar small current neutral grounding warning system and method based on SCADA |
| CN110888015A (en) * | 2019-10-16 | 2020-03-17 | 国电南瑞科技股份有限公司 | Single-phase earth fault positioning method for power distribution automation system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565632A (en) * | 2012-03-18 | 2012-07-11 | 江苏省电力公司徐州供电公司 | Automatically-connected remote control grounded line disconnection and selection working method for low-current system |
| CN102611080A (en) * | 2012-03-16 | 2012-07-25 | 国电南瑞科技股份有限公司 | Main station type small current grounding control method |
| CN102788933A (en) * | 2012-09-25 | 2012-11-21 | 河北省电力公司 | Method for utilizing automatic switch-out controller to search power grid low-current single-phase ground fault |
| CN102788936A (en) * | 2012-09-03 | 2012-11-21 | 安徽理工大学 | Low current grounding fault circuit selection method |
| CN103323743A (en) * | 2013-06-10 | 2013-09-25 | 山西太钢不锈钢股份有限公司 | Method for looking up ground faults by means of integrated automation transformer substation background machine |
| CN103543384A (en) * | 2013-10-15 | 2014-01-29 | 国家电网公司 | Method for determining bus ground faults |
-
2017
- 2017-07-31 CN CN201710640442.6A patent/CN107329035A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611080A (en) * | 2012-03-16 | 2012-07-25 | 国电南瑞科技股份有限公司 | Main station type small current grounding control method |
| CN102565632A (en) * | 2012-03-18 | 2012-07-11 | 江苏省电力公司徐州供电公司 | Automatically-connected remote control grounded line disconnection and selection working method for low-current system |
| CN102788936A (en) * | 2012-09-03 | 2012-11-21 | 安徽理工大学 | Low current grounding fault circuit selection method |
| CN102788933A (en) * | 2012-09-25 | 2012-11-21 | 河北省电力公司 | Method for utilizing automatic switch-out controller to search power grid low-current single-phase ground fault |
| CN103323743A (en) * | 2013-06-10 | 2013-09-25 | 山西太钢不锈钢股份有限公司 | Method for looking up ground faults by means of integrated automation transformer substation background machine |
| CN103543384A (en) * | 2013-10-15 | 2014-01-29 | 国家电网公司 | Method for determining bus ground faults |
Non-Patent Citations (1)
| Title |
|---|
| 国家电网公司人力资源部组编: "《电网调度自动化厂站端调试检修 下》", 31 December 2010, 中国电力出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167701A (en) * | 2017-03-06 | 2017-09-15 | 国网浙江义乌市供电公司 | Automatically method is sentenced in choosing to distribution singlephase earth fault circuit |
| CN108008248A (en) * | 2017-11-27 | 2018-05-08 | 国网安徽省电力公司黄山供电公司 | A kind of busbar small current neutral grounding warning system and method based on SCADA |
| CN110888015A (en) * | 2019-10-16 | 2020-03-17 | 国电南瑞科技股份有限公司 | Single-phase earth fault positioning method for power distribution automation system |
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