CN107121619B - A kind of electric substation's route protection service without power-off device and repair method - Google Patents
A kind of electric substation's route protection service without power-off device and repair method Download PDFInfo
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- CN107121619B CN107121619B CN201710290009.4A CN201710290009A CN107121619B CN 107121619 B CN107121619 B CN 107121619B CN 201710290009 A CN201710290009 A CN 201710290009A CN 107121619 B CN107121619 B CN 107121619B
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- 238000004804 winding Methods 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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Abstract
The invention discloses a kind of electric substation's route protection service without power-off device and repair methods.The device includes the second route protection measure and control device, the power module powered to the second route protection measure and control device, change-over switch QK1 and change-over switch QK2, the contact 2 of change-over switch QK1, contact 6, contact 10, contact 14 is connected separately with first p-wire, the contact 3 of change-over switch QK1, contact 6, contact 9 is electrically connected with three current input terminals of the second route protection measure and control device respectively, the contact 16 of change-over switch QK1 is electrically connected with the ground terminal of the second route protection measure and control device, the contact 1 of change-over switch QK1, contact 5, contact 9, contact 13 is connected separately with second p-wire.The present invention is worked when overhauling to the route protection measure and control device in electric substation, using another route protection measure and control device instead of original route protection measure and control device, and electric substation does not influence user power utilization without power-off.
Description
Technical field
The present invention relates to substation facilities service technique field more particularly to a kind of electric substation's route protection service without power-off
Device and repair method.
Background technique
It is equipped with route protection measure and control device in 35KV electric substation to be used to monitor the three-phase current voltage in electric substation, works as three-phase
The breaker that electric substation is controlled when Current Voltage exception disconnects, and protects the route in electric substation.Currently, being filled to route protection observing and controlling
It sets when being overhauled, needs to power off electric substation, then the route protection measure and control device in electric substation is overhauled, affects user
Electricity consumption.
Summary of the invention
It needs when being overhauled at present to the route protection measure and control device in electric substation the purpose of the present invention is overcoming to change
Electricity the technical issues of being powered off, influencing user power utilization, provides a kind of electric substation's route protection service without power-off device and maintenance
Method uses another route protection measure and control device generation when overhauling to the route protection measure and control device in electric substation
For the work of original route protection measure and control device, electric substation does not influence user power utilization without power-off.
A kind of electric substation's route protection service without power-off device of the invention, the electric substation are equipped with first line protection and survey
Device is controlled, including the second route protection measure and control device, power module, the change-over switch powered to the second route protection measure and control device
Contact 2, contact 6, contact 10, the contact 14 of QK1 and change-over switch QK2, change-over switch QK1 are connected separately with one first test
Line, the contact 3 of change-over switch QK1, contact 6, contact 9 respectively with three current input terminal electricity of the second route protection measure and control device
Connection, the contact 16 of change-over switch QK1 are electrically connected with the ground terminal of the second route protection measure and control device, the touching of change-over switch QK1
Point 1, contact 5, contact 9, contact 13 are connected separately with second p-wire, the contact 1 of change-over switch QK1 and change-over switch
The contact 3 of QK1 and contact 2, the contact 4 of change-over switch QK2 are electrically connected, the contact 5 and change-over switch QK1's of change-over switch QK1
Contact 7 and the contact of change-over switch QK2 6, contact 8 are electrically connected, the contact 9 of change-over switch QK1 and the contact 11 of change-over switch QK1
And the contact 10 of change-over switch QK2, contact 12 are electrically connected, the contact 13 of change-over switch QK1 and the contact 15 of change-over switch QK1 and
The contact 14 of change-over switch QK2, contact 16 are electrically connected, the contact 1 of change-over switch QK2, contact 3, contact 5, contact 7, contact 9,
Contact 11, contact 13, contact 15 are electrically connected.
In the technical scheme, electric substation is equipped with first line protection supervisory equipment and detects three electric currents of three-phase current
Mutual inductor, the secondary side winding first end of three current transformers are defeated with three electric currents of first line protection supervisory equipment respectively
Enter end electrical connection, the secondary side winding first end of current transformer and the corresponding current input terminal of first line protection supervisory equipment
Between be serially connected with the first current terminal row, the secondary side winding second end of current transformer all be electrically connected to ground, first line
The ground terminal of protection supervisory equipment be electrically connected to ground, be serially connected between the ground terminal and ground wire of first line protection supervisory equipment
First current terminal row.
When overhauling to the first line protection supervisory equipment in electric substation, change-over switch QK1 is first turned into a left side
The bypass position on side, so that the contact 1 of change-over switch QK1, contact 2 are connected to, the contact change-over switch QK1 5, contact 6 are connected to, conversion
The contact switch QK1 9, contact 10 are connected to, and the contact change-over switch QK1 13, contact 14 are connected to；Change-over switch QK2 is turned into centre
Exit position so that the contact 1 of change-over switch QK2, contact 2 disconnect, the contact 3 of change-over switch QK2, contact 4 are disconnected, conversion
Contact 5, the contact 6 of switch QK2 disconnects, and contact 7, the contact 8 of change-over switch QK2 disconnects, contact 9, the contact of change-over switch QK2
10 disconnect, and contact 11, the contact 12 of change-over switch QK2 disconnects, and contact 13, the contact 14 of change-over switch QK2 disconnects, change-over switch
Contact 15, the contact 16 of QK2 disconnects；
Then, the first p-wire for the first p-wire that the contact 2 of change-over switch QK1 connects, contact 6 being connected, contact
First p-wire of 10 connections is defeated with the A phase electrical input of first line protection supervisory equipment, B phase electrical input, C phase electricity respectively
Enter end electrical connection, the second p-wire that the second p-wire that the contact 1 of change-over switch QK1 connects, contact 5 connect, contact 9 are connected
The second p-wire connect is electrically connected with the secondary side winding first end of three current transformers respectively, by the touching of change-over switch QK1
First p-wire of 14 connection of point is electrically connected with the ground terminal of first line protection supervisory equipment, by the contact of change-over switch QK1
13 connection the second p-wires be electrically connected to ground；
Then, the connection sheet of four the first current terminal rows is disconnected；
Finally, change-over switch QK2 to be turned to the location of short circuit on the left side, so that the contact 1 of change-over switch QK2, contact 2 connect
Logical, contact 5, the contact 6 of change-over switch QK2 is connected to, and contact 9, the contact 10 of change-over switch QK2 is connected to, the touching of change-over switch QK2
Point 13, contact 14 are connected to；The operating position that change-over switch QK1 is turned to the right, so that contact 1, the contact of change-over switch QK1
2 disconnect, and the contact change-over switch QK1 5, contact 6 disconnect, and the contact change-over switch QK1 9, contact 10 disconnect, the contact change-over switch QK1
13, contact 14 disconnects, and contact 3, the contact 4 of change-over switch QK1 is connected to, and contact 7, the contact 8 of change-over switch QK1 is connected to, conversion
Contact 11, the contact 12 of switch QK1 is connected to, and contact 15, the contact 16 of change-over switch QK1 is connected to, so that first line protection is surveyed
Device and current transformer is controlled to disconnect, the secondary side winding first end of three current transformers respectively with the second route protection observing and controlling
Three current input terminals of device are electrically connected, and the second route protection measure and control device replaces the monitoring of first line protection supervisory equipment to become
Electricity three-phase current.
At this point, the second route protection measure and control device works instead of first line protection supervisory equipment, and first line at this time
Protection supervisory equipment is in off-position, and staff can overhaul first line protection supervisory equipment.
Preferably, a kind of electric substation's route protection service without power-off device further includes change-over switch QK3 and conversion
Contact 2, contact 6, the contact 10 of switch KK, change-over switch QK3 are connected separately with a third p-wire, change-over switch QK3's
Contact 1, contact 5, contact 9 are connected separately with the 4th p-wire, and contact 2, the contact 4 of change-over switch QK3 is electrically connected, conversion
Contact 6, the contact 8 of switch QK3 is electrically connected, and contact 10, the contact 12 of change-over switch QK3 is electrically connected, the contact of change-over switch QK3
3 are electrically connected with the closing circuit output end of the second route protection measure and control device, and the contact 7 of change-over switch QK3 and the second route are protected
The sub-gate circuit output end electrical connection of shield measure and control device, the contact 11 of change-over switch QK3 and the second route protection measure and control device
Ground terminal electrical connection, contact 1, the contact 2 of change-over switch KK are serially connected in the closing circuit of the second route protection measure and control device, are turned
Change the contact 11 of switch KK, contact 12 is serially connected in the sub-gate circuit of the second route protection measure and control device.
The switching signal input terminal of the breaker of the closing circuit output end and electric substation of first line protection supervisory equipment
Electrical connection, the sub-gate signal input terminal electricity of the breaker of the sub-gate circuit output end and electric substation of first line protection supervisory equipment
Connection, the ground terminal of the breaker of electric substation are electrically connected with the ground terminal of first line protection supervisory equipment, first line protection
The second current terminal is serially connected between the switching signal input terminal of the breaker of the closing circuit output end and electric substation of measure and control device
Son is arranged, between the sub-gate signal input terminal of the breaker of the sub-gate circuit output end and electric substation of first line protection supervisory equipment
It is serially connected with the second current terminal row, between the ground terminal of the breaker of electric substation and the ground terminal of first line protection supervisory equipment
It is serially connected with the second current terminal row.
When overhauling to the first line protection supervisory equipment in electric substation, following operation is also carried out:
Change-over switch QK3 is turned to the bypass position on the left side, so that the contact 1 of change-over switch QK3, contact 2 are connected to, is turned
Change the contact 5 of switch QK3, contact 6 is connected to, the contact 9 of change-over switch QK3, the connection of contact 10；
The switching signal input terminal of the breaker of third p-wire and electric substation that the contact 2 of change-over switch QK3 is connected
Electrical connection, the sub-gate signal input terminal electricity of the breaker of third p-wire and electric substation that the contact 6 of change-over switch QK3 is connected
Connection, the third p-wire that the contact 10 of change-over switch QK3 connects is electrically connected with the ground terminal of the breaker of electric substation；It will turn
The 4th p-wire for changing the connection of contact 1 of switch QK3 is electrically connected with the closing circuit output end of first line protection supervisory equipment,
The sub-gate circuit output end electricity for the 4th p-wire and first line protection supervisory equipment that the contact 5 of change-over switch QK3 is connected
Connection, the ground terminal of the 4th p-wire and first line protection supervisory equipment that the contact 9 of change-over switch QK3 connects is electrically connected
It connects；
The connection sheet of three the second current terminal rows is disconnected；
Change-over switch QK3 is turned to the operating position on the right, so that the contact 1 of change-over switch QK3, contact 2 disconnect, is turned
Contact 5, the disconnection of contact 6 of switch QK3 are changed, contact 9, the contact 10 of change-over switch QK3 disconnects, the contact 3 of change-over switch QK3,
Contact 4 is connected to, and contact 7, the contact 8 of change-over switch QK3 is connected to, and contact 11, the contact 12 of change-over switch QK3 is connected to.
Preferably, the second route protection measure and control device is PDS-741A line protective devices.
Preferably, a kind of electric substation's route protection service without power-off device further includes triple-pole double throw switch ZK3, three
Three output ends of double-pole double-throw switch (dpdt switch) ZK3 are electrically connected with three voltage input ends of the second route protection measure and control device respectively, and three
Three input terminals of double-pole double-throw switch (dpdt switch) ZK3 are connected separately with the 5th p-wire, the neutrality of the second route protection measure and control device
Line end and ground terminal are connected separately with the 5th p-wire.When maintenance, by three voltages of the second route protection measure and control device
5th p-wire of input terminal connection is electrically connected with the secondary winding output end of three voltage transformers in electric substation respectively, the
5th p-wire of the neutral terminal connection of two route protection supervisory equipments is electrically connected with the neutral terminal of voltage transformer, and second
5th p-wire of the ground terminal connection of route protection measure and control device is electrically connected with the ground terminal of voltage transformer.
A kind of electric substation's route protection service without power-off method of the invention, for a kind of above-mentioned electric substation's route protection
Service without power-off device, the electric substation are equipped with first line protection supervisory equipment and detect three Current Mutual Inductances of three-phase current
Device, the secondary side winding first end of three current transformers respectively with three current input terminals of first line protection supervisory equipment
Electrical connection, between the secondary side winding first end of current transformer and the corresponding current input terminal of first line protection supervisory equipment
Be serially connected with the first current terminal row, the secondary side winding second end of current transformer all be electrically connected to ground, first line protection
The ground terminal of measure and control device be electrically connected to ground, be serially connected with first between the ground terminal and ground wire of first line protection supervisory equipment
Current terminal row, comprising the following steps:
Change-over switch QK1: being turned to the bypass position on the left side by S1, so that the contact 1 of change-over switch QK1, contact 2 connect
Logical, the contact change-over switch QK1 5, contact 6 are connected to, and the contact change-over switch QK1 9, contact 10 are connected to, the contact change-over switch QK1 13,
Contact 14 is connected to；By change-over switch QK2 turn to it is intermediate exit position so that the contact 1 of change-over switch QK2, contact 2 are disconnected
It opens, contact 3, the contact 4 of change-over switch QK2 disconnects, and contact 5, the contact 6 of change-over switch QK2 disconnects, the touching of change-over switch QK2
Point 7, contact 8 disconnect, and contact 9, the contact 10 of change-over switch QK2 disconnects, and contact 11, the contact 12 of change-over switch QK2 disconnects, and turn
Change the contact 13 of switch QK2, contact 14 disconnects, the contact 15 of change-over switch QK2, the disconnection of contact 16；
S2: the first p-wire that the first p-wire that the contact 2 of change-over switch QK1 connects, contact 6 are connected, contact 10
First p-wire of connection is inputted with the A phase electrical input of first line protection supervisory equipment, B phase electrical input, C phase electricity respectively
End electrical connection connects the second p-wire that the second p-wire that the contact 1 of change-over switch QK1 connects, contact 5 connect, contact 9
The second p-wire be electrically connected respectively with the secondary side winding first end of three current transformers, by the contact of change-over switch QK1
First p-wire of 14 connections is electrically connected with the ground terminal of first line protection supervisory equipment, by the contact 13 of change-over switch QK1
Connection the second p-wire be electrically connected to ground；
S3: the connection sheet of four the first current terminal rows is disconnected；
Change-over switch QK2: being turned to the location of short circuit on the left side by S4, so that the contact 1 of change-over switch QK2, contact 2 connect
Logical, contact 5, the contact 6 of change-over switch QK2 is connected to, and contact 9, the contact 10 of change-over switch QK2 is connected to, the touching of change-over switch QK2
Point 13, contact 14 are connected to；The operating position that change-over switch QK1 is turned to the right, so that contact 1, the contact of change-over switch QK1
2 disconnect, and the contact change-over switch QK1 5, contact 6 disconnect, and the contact change-over switch QK1 9, contact 10 disconnect, the contact change-over switch QK1
13, contact 14 disconnects, and contact 3, the contact 4 of change-over switch QK1 is connected to, and contact 7, the contact 8 of change-over switch QK1 is connected to, conversion
Contact 11, the contact 12 of switch QK1 is connected to, and contact 15, the contact 16 of change-over switch QK1 is connected to, so that first line protection is surveyed
Device and current transformer is controlled to disconnect, the secondary side winding first end of three current transformers respectively with the second route protection observing and controlling
Three current input terminals of device are electrically connected, and the second route protection measure and control device replaces the monitoring of first line protection supervisory equipment to become
Electricity three-phase current.
Preferably, the combined floodgate of the breaker of the closing circuit output end and electric substation of first line protection supervisory equipment is believed
The electrical connection of number input terminal, the sub-gate signal of the breaker of the sub-gate circuit output end and electric substation of first line protection supervisory equipment
Input terminal electrical connection, the ground terminal of the breaker of electric substation are electrically connected with the ground terminal of first line protection supervisory equipment, and first
Is serially connected between the switching signal input terminal of the breaker of the closing circuit output end and electric substation of route protection measure and control device
Two current terminals row, the sub-gate signal of the breaker of the sub-gate circuit output end and electric substation of first line protection supervisory equipment are defeated
Enter to be serially connected with the second current terminal row, the ground terminal of the breaker of electric substation and connecing for first line protection supervisory equipment between end
The second current terminal row is serially connected between ground terminal, a kind of electric substation's route protection service without power-off method further includes following step
It is rapid:
Change-over switch QK3: being turned to the bypass position on the left side by S5, so that the contact 1 of change-over switch QK3, contact 2 connect
Logical, contact 5, the contact 6 of change-over switch QK3 is connected to, and contact 9, the contact 10 of change-over switch QK3 is connected to；
S6: the switching signal input of the breaker of third p-wire and electric substation that the contact 2 of change-over switch QK3 is connected
End electrical connection, the sub-gate signal input terminal of the breaker of third p-wire and electric substation that the contact 6 of change-over switch QK3 is connected
Electrical connection, the third p-wire that the contact 10 of change-over switch QK3 connects is electrically connected with the ground terminal of the breaker of electric substation；It will
The closing circuit output end of the 4th p-wire and first line protection supervisory equipment that the contact 1 of change-over switch QK3 connects is electrically connected
It connects, the sub-gate circuit output end of the 4th p-wire that the contact 5 of change-over switch QK3 is connected and first line protection supervisory equipment
Electrical connection, the ground terminal of the 4th p-wire and first line protection supervisory equipment that the contact 9 of change-over switch QK3 connects is electrically connected
It connects；
S7: the connection sheet of three the second current terminal rows is disconnected；
Change-over switch QK3: being turned to the operating position on the right by S8, so that the contact 1 of change-over switch QK3, contact 2 are broken
It opens, contact 5, the contact 6 of change-over switch QK3 disconnects, and contact 9, the contact 10 of change-over switch QK3 disconnects, the touching of change-over switch QK3
Point 3, contact 4 are connected to, and contact 7, the contact 8 of change-over switch QK3 is connected to, and contact 11, the contact 12 of change-over switch QK3 is connected to.
Preferably, to following steps are executed after the completion of the maintenance of first line protection supervisory equipment:
Change-over switch QK2: being turned to the location of short circuit on the left side by M1, and change-over switch QK1 is turned to the BO bit on the left side
It sets；
M2: change-over switch QK2 is turned to and intermediate exits position；
M3: the connection sheet of four the first current terminal rows is connected to；
M4: the first p-wire and the second p-wire are removed；
M5: change-over switch QK1 is turned to and intermediate exits position；
M6: change-over switch QK3 is turned to the bypass position on the left side；
M7: the connection sheet of three the second current terminal rows is connected to；
M8: third p-wire and the 4th p-wire are removed；
M9: change-over switch QK3 is turned to and intermediate exits position.
The beneficial effects of the present invention are: use is another when overhauling to the route protection measure and control device in electric substation
A route protection measure and control device works instead of original route protection measure and control device, and electric substation does not influence user's use without power-off
Electricity.
Detailed description of the invention
Fig. 1 is a kind of circuit connection diagram that the present invention is connect with the current transformer end of electric substation；
Fig. 2 is a kind of circuit connection diagram that the present invention is connect with the breaker end of electric substation；
Fig. 3 is a kind of circuit connection diagram that power module is connect with the second route protection measure and control device；
Fig. 4 is a kind of circuit connection diagram that the present invention is connect with the voltage transformer end of electric substation.
In figure: 1, first line protection supervisory equipment, the 2, second route protection measure and control device, 3, power module, 4, electric current
Mutual inductor, the 5, first current terminal row, 6, breaker, the 7, second current terminal row.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: a kind of electric substation's route protection service without power-off device of the present embodiment, as shown in Figure 1, Figure 2, Figure 3 shows,
Including the second route protection measure and control device 2, to the second route protection measure and control device 2 power power module 3, change-over switch QK1,
Change-over switch QK2, change-over switch QK3 and change-over switch KK, contact 2, contact 6, contact 10, the contact 14 of change-over switch QK1 are divided
It is not connected with first p-wire, contact 3, contact 6, the contact 9 of change-over switch QK1 is filled with the second route protection observing and controlling respectively
Set 2 three current input terminals electrical connection, the ground terminal of the contact 16 of change-over switch QK1 and the second route protection measure and control device 2
Electrical connection, contact 1, contact 5, contact 9, the contact 13 of change-over switch QK1 is connected separately with second p-wire, change-over switch
The contact 1 of QK1 is electrically connected with the contact 3 of change-over switch QK1 and the contact 2 of change-over switch QK2, contact 4, change-over switch QK1's
Contact 5 is electrically connected with the contact 7 of change-over switch QK1 and the contact 6 of change-over switch QK2, contact 8, the contact 9 of change-over switch QK1
Be electrically connected with the contact 11 of change-over switch QK1 and the contact 10 of change-over switch QK2, contact 12, the contact 13 of change-over switch QK1 with
The contact 15 of change-over switch QK1 and contact 14, the contact 16 of change-over switch QK2 are electrically connected, contact 1, the contact of change-over switch QK2
3, contact 5, contact 7, contact 9, contact 11, contact 13, contact 15 are electrically connected；
Contact 2, contact 6, the contact 10 of change-over switch QK3 is connected separately with a third p-wire, change-over switch QK3's
Contact 1, contact 5, contact 9 are connected separately with the 4th p-wire, and contact 2, the contact 4 of change-over switch QK3 is electrically connected, conversion
Contact 6, the contact 8 of switch QK3 is electrically connected, and contact 10, the contact 12 of change-over switch QK3 is electrically connected, the contact of change-over switch QK3
3 are electrically connected with the closing circuit output end of the second route protection measure and control device, and the contact 7 of change-over switch QK3 and the second route are protected
The sub-gate circuit output end electrical connection of shield measure and control device, the contact 11 of change-over switch QK3 and the second route protection measure and control device
Ground terminal electrical connection, contact 1, the contact 2 of change-over switch KK are serially connected in the closing circuit of the second route protection measure and control device, are turned
Change the contact 11 of switch KK, contact 12 is serially connected in the sub-gate circuit of the second route protection measure and control device.
Electric substation is equipped with first line protection supervisory equipment and detects three current transformers of three-phase current, three electric currents
The secondary side winding first end of mutual inductor is electrically connected with three current input terminals of first line protection supervisory equipment respectively, electric current
First is serially connected between the secondary side winding first end of mutual inductor and the corresponding current input terminal of first line protection supervisory equipment
Current terminal row, the secondary side winding second end of current transformer all be electrically connected to ground, first line protection supervisory equipment
Ground terminal be electrically connected to ground, be serially connected with the first current terminal between the ground terminal and ground wire of first line protection supervisory equipment
Row；The switching signal input terminal of the breaker of the closing circuit output end and electric substation of first line protection supervisory equipment is electrically connected
It connects, the sub-gate signal input terminal of the breaker of the sub-gate circuit output end and electric substation of first line protection supervisory equipment is electrically connected
It connects, the ground terminal of the breaker of electric substation is electrically connected with the ground terminal of first line protection supervisory equipment, and first line protection is surveyed
It controls and is serially connected with the second current terminal between the closing circuit output end of device and the switching signal input terminal of the breaker of electric substation
It arranges, is gone here and there between the sub-gate signal input terminal of the breaker of the sub-gate circuit output end and electric substation of first line protection supervisory equipment
It is connected to the second current terminal row, is gone here and there between the ground terminal of the breaker of electric substation and the ground terminal of first line protection supervisory equipment
It is connected to the second current terminal row.
Second route protection measure and control device 2 is PDS-741A line protective devices.
As shown in figure 4, further include triple-pole double throw switch ZK3, three output ends of triple-pole double throw switch ZK3 are respectively with second
Three voltage input ends of route protection measure and control device are electrically connected, and three input terminals of triple-pole double throw switch ZK3 are connected separately with
Piece the 5th p-wire, the neutral terminal and ground terminal of the second route protection measure and control device are connected separately with one the 5th test
Line.When maintenance, the 5th p-wire that three voltage input ends of the second route protection measure and control device are connected respectively with electric substation
In three voltage transformers secondary winding output end electrical connection, the second route protection measure and control device neutral terminal connection
5th p-wire is electrically connected with the neutral terminal of voltage transformer, and the 5th of the ground terminal connection of the second route protection measure and control device the
P-wire is electrically connected with the ground terminal of voltage transformer.
A kind of electric substation's route protection service without power-off method of the present embodiment is protected for a kind of above-mentioned electric substation's route
Protect service without power-off device, comprising the following steps:
Change-over switch QK1: being turned to the bypass position on the left side by S1, so that the contact 1 of change-over switch QK1, contact 2 connect
Logical, the contact change-over switch QK1 5, contact 6 are connected to, and the contact change-over switch QK1 9, contact 10 are connected to, the contact change-over switch QK1 13,
Contact 14 is connected to；By change-over switch QK2 turn to it is intermediate exit position so that the contact 1 of change-over switch QK2, contact 2 are disconnected
It opens, contact 3, the contact 4 of change-over switch QK2 disconnects, and contact 5, the contact 6 of change-over switch QK2 disconnects, the touching of change-over switch QK2
Point 7, contact 8 disconnect, and contact 9, the contact 10 of change-over switch QK2 disconnects, and contact 11, the contact 12 of change-over switch QK2 disconnects, and turn
Change the contact 13 of switch QK2, contact 14 disconnects, the contact 15 of change-over switch QK2, the disconnection of contact 16；
S2: the first p-wire that the first p-wire that the contact 2 of change-over switch QK1 connects, contact 6 are connected, contact 10
First p-wire of connection is inputted with the A phase electrical input of first line protection supervisory equipment, B phase electrical input, C phase electricity respectively
End electrical connection connects the second p-wire that the second p-wire that the contact 1 of change-over switch QK1 connects, contact 5 connect, contact 9
The second p-wire be electrically connected respectively with the secondary side winding first end of three current transformers, by the contact of change-over switch QK1
First p-wire of 14 connections is electrically connected with the ground terminal of first line protection supervisory equipment, by the contact 13 of change-over switch QK1
Connection the second p-wire be electrically connected to ground；
S3: the connection sheet of four the first current terminal rows is disconnected；
Change-over switch QK2: being turned to the location of short circuit on the left side by S4, so that the contact 1 of change-over switch QK2, contact 2 connect
Logical, contact 5, the contact 6 of change-over switch QK2 is connected to, and contact 9, the contact 10 of change-over switch QK2 is connected to, the touching of change-over switch QK2
Point 13, contact 14 are connected to；The operating position that change-over switch QK1 is turned to the right, so that contact 1, the contact of change-over switch QK1
2 disconnect, and the contact change-over switch QK1 5, contact 6 disconnect, and the contact change-over switch QK1 9, contact 10 disconnect, the contact change-over switch QK1
13, contact 14 disconnects, and contact 3, the contact 4 of change-over switch QK1 is connected to, and contact 7, the contact 8 of change-over switch QK1 is connected to, conversion
Contact 11, the contact 12 of switch QK1 is connected to, and contact 15, the contact 16 of change-over switch QK1 is connected to, so that first line protection is surveyed
Device and current transformer is controlled to disconnect, the secondary side winding first end of three current transformers respectively with the second route protection observing and controlling
Three current input terminals of device are electrically connected, and the second route protection measure and control device replaces the monitoring of first line protection supervisory equipment to become
Electricity three-phase current；
Change-over switch QK3: being turned to the bypass position on the left side by S5, so that the contact 1 of change-over switch QK3, contact 2 connect
Logical, contact 5, the contact 6 of change-over switch QK3 is connected to, and contact 9, the contact 10 of change-over switch QK3 is connected to；
S6: the switching signal input of the breaker of third p-wire and electric substation that the contact 2 of change-over switch QK3 is connected
End electrical connection, the sub-gate signal input terminal of the breaker of third p-wire and electric substation that the contact 6 of change-over switch QK3 is connected
Electrical connection, the third p-wire that the contact 10 of change-over switch QK3 connects is electrically connected with the ground terminal of the breaker of electric substation；It will
The closing circuit output end of the 4th p-wire and first line protection supervisory equipment that the contact 1 of change-over switch QK3 connects is electrically connected
It connects, the sub-gate circuit output end of the 4th p-wire that the contact 5 of change-over switch QK3 is connected and first line protection supervisory equipment
Electrical connection, the ground terminal of the 4th p-wire and first line protection supervisory equipment that the contact 9 of change-over switch QK3 connects is electrically connected
It connects；
S7: the connection sheet of three the second current terminal rows is disconnected；
Change-over switch QK3: being turned to the operating position on the right by S8, so that the contact 1 of change-over switch QK3, contact 2 are broken
It opens, contact 5, the contact 6 of change-over switch QK3 disconnects, and contact 9, the contact 10 of change-over switch QK3 disconnects, the touching of change-over switch QK3
Point 3, contact 4 are connected to, and contact 7, the contact 8 of change-over switch QK3 is connected to, and contact 11, the contact 12 of change-over switch QK3 is connected to.
At this point, the second route protection measure and control device works instead of first line protection supervisory equipment, and first line at this time
Protection supervisory equipment is in off-position, and staff can overhaul first line protection supervisory equipment.
Apparatus for examination and repair is exited by following steps to after the completion of the maintenance of first line protection supervisory equipment:
Change-over switch QK2: being turned to the location of short circuit on the left side by M1, and change-over switch QK1 is turned to the BO bit on the left side
It sets；
M2: change-over switch QK2 is turned to and intermediate exits position；
M3: the connection sheet of four the first current terminal rows is connected to；
M4: the first p-wire and the second p-wire are removed；
M5: change-over switch QK1 is turned to and intermediate exits position；
M6: change-over switch QK3 is turned to the bypass position on the left side；
M7: the connection sheet of three the second current terminal rows is connected to；
M8: third p-wire and the 4th p-wire are removed；
M9: change-over switch QK3 is turned to and intermediate exits position.
Claims (4)
1. a kind of electric substation's route protection service without power-off device, the electric substation is equipped with first line protection supervisory equipment (1),
It is characterized by comprising the second route protection measure and control devices (2), the power supply mould powered to the second route protection measure and control device (2)
Block (3), change-over switch QK1 and change-over switch QK2, contact 2, contact 6, contact 10, the contact 14 of change-over switch QK1 are separately connected
Have first p-wire, the contact 3 of change-over switch QK1, contact 6, contact 9 respectively with the second route protection measure and control device (2)
The electrical connection of three current input terminals, the ground terminal of the contact 16 of change-over switch QK1 and the second route protection measure and control device (2) is electric
Connection, contact 1, contact 5, contact 9, the contact 13 of change-over switch QK1 is connected separately with second p-wire, change-over switch
The contact 1 of QK1 is electrically connected with the contact 3 of change-over switch QK1 and the contact 2 of change-over switch QK2, contact 4, change-over switch QK1's
Contact 5 is electrically connected with the contact 7 of change-over switch QK1 and the contact 6 of change-over switch QK2, contact 8, the contact 9 of change-over switch QK1
Be electrically connected with the contact 11 of change-over switch QK1 and the contact 10 of change-over switch QK2, contact 12, the contact 13 of change-over switch QK1 with
The contact 15 of change-over switch QK1 and contact 14, the contact 16 of change-over switch QK2 are electrically connected, contact 1, the contact of change-over switch QK2
3, contact 5, contact 7, contact 9, contact 11, contact 13, contact 15 are electrically connected；
It further include change-over switch QK3 and change-over switch KK, contact 2, contact 6, the contact 10 of change-over switch QK3 is connected separately with one
Root third p-wire, contact 1, contact 5, the contact 9 of change-over switch QK3 are connected separately with the 4th p-wire, change-over switch
Contact 2, the contact 4 of QK3 is electrically connected, and contact 6, the contact 8 of change-over switch QK3 is electrically connected, the contact 10 of change-over switch QK3, touching
12 electrical connection of point, the contact 3 of change-over switch QK3 are electrically connected with the closing circuit output end of the second route protection measure and control device (2),
The contact 7 of change-over switch QK3 is electrically connected with the sub-gate circuit output end of the second route protection measure and control device (2), change-over switch QK3
Contact 11 be electrically connected with the ground terminal of the second route protection measure and control device (2), contact 1, the contact 2 of change-over switch KK is serially connected with
In the closing circuit of second route protection measure and control device (2), contact 11, the contact 12 of change-over switch KK is serially connected with the second route guarantor
It protects in the sub-gate circuit of measure and control device (2)；
The second route protection measure and control device (2) is PDS-741A line protective devices；
It further include triple-pole double throw switch ZK3, three output ends of triple-pole double throw switch ZK3 are filled with the second route protection observing and controlling respectively
The three voltage input ends electrical connection set, three input terminals of triple-pole double throw switch ZK3 are connected separately with the 5th p-wire,
The neutral terminal and ground terminal of second route protection measure and control device are connected separately with the 5th p-wire.
2. a kind of electric substation's route protection service without power-off method is used for a kind of electric substation's route protection described in claim 1
Service without power-off device, the electric substation are equipped with first line protection supervisory equipment (1) and detect three electric currents of three-phase current
Mutual inductor (4), the secondary side winding first end of three current transformers (4) respectively with first line protection supervisory equipment (1)
Three current input terminal electrical connections, secondary side winding first end and first line protection supervisory equipment (1) of current transformer (4)
Corresponding current input terminal between be serially connected with the first current terminal row (5), the secondary side winding second end of current transformer (4) is all
Be electrically connected to ground, the ground terminal of first line protection supervisory equipment (1) be electrically connected to ground, first line protection supervisory equipment
(1) the first current terminal row (5) is serially connected between ground terminal and ground wire, which comprises the following steps:
Change-over switch QK1: being turned to the bypass position on the left side by S1, so that the contact 1 of change-over switch QK1, contact 2 are connected to, is turned
It changes the contact switch QK1 5, contact 6 to be connected to, the contact change-over switch QK1 9, contact 10 are connected to, the contact change-over switch QK1 13, contact 14
Connection；By change-over switch QK2 turn to it is intermediate exit position so that the contact 1 of change-over switch QK2, contact 2 disconnect, conversion
Contact 3, the contact 4 of switch QK2 disconnects, and contact 5, the contact 6 of change-over switch QK2 disconnects, contact 7, the contact of change-over switch QK2
8 disconnect, and contact 9, the contact 10 of change-over switch QK2 disconnects, and contact 11, the contact 12 of change-over switch QK2 disconnects, change-over switch
Contact 13, the contact 14 of QK2 disconnects, and contact 15, the contact 16 of change-over switch QK2 disconnects；
S2: the first p-wire that the first p-wire that the contact 2 of change-over switch QK1 connects, contact 6 connect, contact 10 are connected
The first p-wire respectively with the A phase electrical input of first line protection supervisory equipment, B phase electrical input, C phase electrical input electricity
Connection, that the second p-wire that the second p-wire that the contact 1 of change-over switch QK1 connects, contact 5 connect, contact 9 are connected
Two p-wires are electrically connected with the secondary side winding first end of three current transformers respectively, and the contact 14 of change-over switch QK1 is connected
The first p-wire connect is electrically connected with the ground terminal of first line protection supervisory equipment, and the contact 13 of change-over switch QK1 is connected
The second p-wire be electrically connected to ground；
S3: the connection sheet of four the first current terminal rows is disconnected；
Change-over switch QK2: being turned to the location of short circuit on the left side by S4, so that the contact 1 of change-over switch QK2, contact 2 are connected to, is turned
Contact 5, the connection of contact 6 of switch QK2 are changed, contact 9, the contact 10 of change-over switch QK2 is connected to, the contact 13 of change-over switch QK2,
Contact 14 is connected to；Change-over switch QK1 is turned to the operating position on the right, so that the contact 1 of change-over switch QK1, contact 2 are broken
It opens, the contact change-over switch QK1 5, contact 6 disconnect, and the contact change-over switch QK1 9, contact 10 disconnect, the contact change-over switch QK1 13,
Contact 14 disconnects, and contact 3, the contact 4 of change-over switch QK1 is connected to, and contact 7, the contact 8 of change-over switch QK1 is connected to, change-over switch
Contact 11, the contact 12 of QK1 is connected to, and contact 15, the contact 16 of change-over switch QK1 is connected to, so that first line protection observing and controlling dress
Set with current transformer disconnect, the secondary side winding first end of three current transformers respectively with the second route protection measure and control device
Three current input terminals electrical connection, the second route protection measure and control device replace first line protection supervisory equipment monitoring electric substation
Three-phase current.
3. a kind of electric substation's route protection service without power-off method according to claim 2, first line protects observing and controlling dress
The switching signal input terminal for setting the closing circuit output end of (1) and the breaker (6) of electric substation is electrically connected, and first line protection is surveyed
The sub-gate circuit output end of control device (1) is electrically connected with the sub-gate signal input terminal of the breaker (6) of electric substation, and electric substation breaks
The ground terminal of road device (6) is electrically connected with the ground terminal of first line protection supervisory equipment (1), first line protection supervisory equipment
(1) the second current terminal is serially connected between the switching signal input terminal of the breaker (6) of closing circuit output end and electric substation
It arranges (7), the sub-gate signal of the breaker (6) of the sub-gate circuit output end and electric substation of first line protection supervisory equipment (1) is defeated
Enter and is serially connected with the second current terminal row (7) between end, ground terminal and first line the protection observing and controlling dress of the breaker (6) of electric substation
It sets and is serially connected with the second current terminal row (7) between the ground terminal of (1), which is characterized in that is further comprising the steps of:
Change-over switch QK3: being turned to the bypass position on the left side by S5, so that the contact 1 of change-over switch QK3, contact 2 are connected to, is turned
Change the contact 5 of switch QK3, contact 6 is connected to, the contact 9 of change-over switch QK3, the connection of contact 10；
S6: the switching signal input terminal electricity of the breaker of third p-wire and electric substation that the contact 2 of change-over switch QK3 is connected
Connection, the sub-gate signal input terminal of the breaker of third p-wire and electric substation that the contact 6 of change-over switch QK3 connects is electrically connected
It connects, the third p-wire that the contact 10 of change-over switch QK3 connects is electrically connected with the ground terminal of the breaker of electric substation；It will conversion
The 4th p-wire that the contact 1 of switch QK3 connects is electrically connected with the closing circuit output end of first line protection supervisory equipment, will
The sub-gate circuit output end of the 4th p-wire and first line protection supervisory equipment that the contact 5 of change-over switch QK3 connects is electrically connected
It connects, the 4th p-wire that the contact 9 of change-over switch QK3 connects is electrically connected with the ground terminal of first line protection supervisory equipment；
S7: the connection sheet of three the second current terminal rows is disconnected；
Change-over switch QK3: being turned to the operating position on the right by S8, so that the contact 1 of change-over switch QK3, contact 2 disconnect, is turned
Contact 5, the disconnection of contact 6 of switch QK3 are changed, contact 9, the contact 10 of change-over switch QK3 disconnects, the contact 3 of change-over switch QK3,
Contact 4 is connected to, and contact 7, the contact 8 of change-over switch QK3 is connected to, and contact 11, the contact 12 of change-over switch QK3 is connected to.
4. a kind of electric substation's route protection service without power-off method according to claim 3, which is characterized in that First Line
Following steps are executed after the completion of the maintenance of road protection supervisory equipment:
Change-over switch QK2: being turned to the location of short circuit on the left side by M1, and change-over switch QK1 is turned to the bypass position on the left side；
M2: change-over switch QK2 is turned to and intermediate exits position；
M3: the connection sheet of four the first current terminal rows is connected to；
M4: the first p-wire and the second p-wire are removed；
M5: change-over switch QK1 is turned to and intermediate exits position；
M6: change-over switch QK3 is turned to the bypass position on the left side；
M7: the connection sheet of three the second current terminal rows is connected to；
M8: third p-wire and the 4th p-wire are removed；
M9: change-over switch QK3 is turned to and intermediate exits position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290009.4A CN107121619B (en) | 2017-04-27 | 2017-04-27 | A kind of electric substation's route protection service without power-off device and repair method |
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|---|---|---|---|
| CN201710290009.4A CN107121619B (en) | 2017-04-27 | 2017-04-27 | A kind of electric substation's route protection service without power-off device and repair method |
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| CN107121619B true CN107121619B (en) | 2019-07-19 |
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| CN109473895B9 (en) * | 2018-10-09 | 2020-09-08 | 深圳供电局有限公司 | Correct short circuit operation method for current loop in bus protection, overhaul and maintenance |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290059A (en) * | 2000-11-08 | 2001-04-04 | 华中科技大学 | Method for protecting power transmission line and travelling wave sensor for it |
| CN101902036A (en) * | 2010-07-16 | 2010-12-01 | 江苏省电力公司徐州供电公司 | Power line protection switching device |
| CN201667535U (en) * | 2010-07-16 | 2010-12-08 | 重庆迅驰电气有限公司 | Electric power system line protection observe and control apparatus |
| KR101033822B1 (en) * | 2011-01-26 | 2011-05-16 | 김인태 | Motor controlling board with neutral line replacement and method thereof |
| CN203135418U (en) * | 2012-12-14 | 2013-08-14 | 滁州安瑞电力自动化有限公司 | Digital line protection, monitoring and control apparatus |
| CN103809052A (en) * | 2012-11-14 | 2014-05-21 | 中国广东核电集团有限公司 | Dynamic simulation experiment system for supergrid power transmission line protection and charged function test method |
| CN203745522U (en) * | 2014-03-10 | 2014-07-30 | 杭州银湖电气设备有限公司 | Change-over switch of signal detection sampling |
| CN106207996A (en) * | 2016-08-24 | 2016-12-07 | 国网江苏省电力公司电力科学研究院 | THE UPFC series transformer charge initiation test relaying configuration method |
-
2017
- 2017-04-27 CN CN201710290009.4A patent/CN107121619B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290059A (en) * | 2000-11-08 | 2001-04-04 | 华中科技大学 | Method for protecting power transmission line and travelling wave sensor for it |
| CN101902036A (en) * | 2010-07-16 | 2010-12-01 | 江苏省电力公司徐州供电公司 | Power line protection switching device |
| CN201667535U (en) * | 2010-07-16 | 2010-12-08 | 重庆迅驰电气有限公司 | Electric power system line protection observe and control apparatus |
| KR101033822B1 (en) * | 2011-01-26 | 2011-05-16 | 김인태 | Motor controlling board with neutral line replacement and method thereof |
| CN103809052A (en) * | 2012-11-14 | 2014-05-21 | 中国广东核电集团有限公司 | Dynamic simulation experiment system for supergrid power transmission line protection and charged function test method |
| CN203135418U (en) * | 2012-12-14 | 2013-08-14 | 滁州安瑞电力自动化有限公司 | Digital line protection, monitoring and control apparatus |
| CN203745522U (en) * | 2014-03-10 | 2014-07-30 | 杭州银湖电气设备有限公司 | Change-over switch of signal detection sampling |
| CN106207996A (en) * | 2016-08-24 | 2016-12-07 | 国网江苏省电力公司电力科学研究院 | THE UPFC series transformer charge initiation test relaying configuration method |
Non-Patent Citations (2)
| Title |
|---|
| 改进的变电站监控***功能设计;李永锋;《电子设计工程》;20150420;第23卷(第8期);全文 |
| 老旧变电站低压线路重合闸远方投退功能的实现方案;夏超;《电器开关》;20161015(第5期);全文 |
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