CN107134808A - Platform becomes group's automatic control system and control method - Google Patents
Platform becomes group's automatic control system and control method Download PDFInfo
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- CN107134808A CN107134808A CN201710577851.6A CN201710577851A CN107134808A CN 107134808 A CN107134808 A CN 107134808A CN 201710577851 A CN201710577851 A CN 201710577851A CN 107134808 A CN107134808 A CN 107134808A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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Abstract
Become group's automatic control system and control method the present invention relates to a kind of platform, belong to 10KV/0.4KV low-voltage distribution network automatic control systems field, including power supply buses and N sections of supply lines, it is connected between power supply buses and adjacent Liang Duan supply lines by interconnection switch, is connected between adjacent Liang Duan supply lines by interconnection switch；Setting table area main transformer on described power supply buses, platform area main transformer side connected unit area group's master controller, setting table area transformer is distinguished in supply line, platform area transformer side is respectively connected with platform and becomes controller, and platform becomes controller and interconnection switch and passes through wireless communication unit connected unit area group's master controller.Reasonable in design of the present invention, can real-time monitoring platform become operation number of units, to platform area transformer group composition distribution carry out automatic network restructuring, optimize Distributing network structure, improve operational efficiency, reduce underloading loss, improve distribution safe operation ability.
Description
Technical field
Become group's automatic control system and control method the present invention relates to a kind of platform, belong to 10KV/0.4KV low-voltage distribution networks automatic
Control system field.
Background technology
National grid improves the instruction of environment and reduction haze for cooperation country, it is proposed that coal changes electric rule in rural power grids
Draw, the resident in rural power grids is burnt coal heating by original and be changed to electricity consumption heating.But the coal changes electricity and plans that result in each household powers in original
6.9KW is added on the basis of power supply capacity, and then result in the power supply capacity deficiency of first wife radio area transformer, in order to overcome
Above mentioned problem is, it is necessary to roll up for radio area transformer, and thus the quantity that result in for radio area transformer increase several times, such as
Shown in Fig. 8.But this kind of newly-increased load belongs to seaonal load, in three seasons of spring and summer autumn, load can return to original load
Magnitude, hence in so that platform area transformer changes very greatly in the load factor of different times, platform area transformer is most of in 1 year
Time is light running, and the loss of platform area transformer is very big.
The content of the invention
According to deficiency of the prior art above, the problem to be solved in the present invention is：A kind of reasonable in design, energy are provided
Enough real-time monitoring platforms become operation number of units, and the distribution to platform area transformer group's composition carries out automatic network restructuring, optimizes Distributing network structure,
Operational efficiency is improved, underloading loss is reduced, the platform for improving distribution safe operation ability becomes group's automatic control system and control method.
The technical solution adopted for the present invention to solve the technical problems is：
Described platform becomes group's automatic control system, including power supply buses and N section supply lines, power supply buses and adjacent two sections
It is connected between supply line by interconnection switch, is connected between adjacent Liang Duan supply lines by interconnection switch；Described
Set respectively in setting table area main transformer on power supply buses, platform area main transformer side connected unit area group's master controller, supply line
Zhi Tai areas transformer, platform area transformer side is respectively connected with platform and becomes controller, and platform becomes controller and interconnection switch passes through radio communication
Unit connected unit area group's master controller.
Platform, which becomes group's automatic control system, can gather group internal loading size in real time, pass through telecommunication means, real-time monitoring
The operation number of units that platform becomes, quantity operation is become to be adapted to the platform needed for load, the distribution that transformer group in platform area constitutes is carried out automatic
Network reconfiguration, optimizes Distributing network structure, improves operational efficiency, reduces underloading loss, distribution safe operation ability is improved, with stronger
Practicality.
It is further that preferably platform area group's master controller includes the voltage transformer summation current transformer of connection power supply buses,
The signal input part of voltage transformer summation current transformer connection microprocessor, the COM1 connection display screen of microprocessor,
The man-machine interaction unit and wireless communication unit of button composition, the control output end connection primary cut-out and low pressure of microprocessor
A.C. contactor, primary cut-out is used for the access for controlling transformer high-voltage input, and low voltage AC contactor is used to control to become
The low-voltage output of depressor, realizes the access of load.Platform becomes group controller platform area group's master controller and is installed on platform area main transformer
Place, can realize that receiving platform becomes the numbers such as each phase voltage, electric current, power that controller and interconnection switch are gathered by wireless communication unit
According to, complete aggregation of data and intellectual analysis judge, operation is put into operation or exit by wireless communication unit console area transformer,
The interconnection switch that the operation is installed in supply line realizes the contact of supply line.
Further preferred, platform, which becomes controller, includes the voltage transformer summation current transformer of connection supply line, voltage
Transformer summation current transformer connects the signal input part of microprocessor, COM1 connection display screen, the button of microprocessor
The man-machine interaction unit and wireless communication unit of composition, the control output end connection primary cut-out and low-voltage alternating-current of microprocessor
Contactor, primary cut-out is used for the access for controlling transformer high-voltage input, and low voltage AC contactor is used to control transformer
Low-voltage output, realize the access of load.Collection each phase institute on-load data of this area's transformer are realized, and are transmitted to platform area
Group's master controller；The instruction of receiving platform area group's master controller, performs correspondence platform area transformer and puts into operation or exit action.
Further preferably interconnection switch includes microprocessor, and the COM1 of microprocessor connects wireless communication unit,
The control output end connection low voltage AC contactor of microprocessor, low voltage AC contactor is used to control connecing for supply line's load
Enter, low voltage AC contactor both sides set voltage transformer I and voltage transformer II, current transformer I and Current Mutual Inductance respectively
Device II, voltage transformer I, voltage transformer II, the summation current transformer II of current transformer I are all connected with microprocessor.Realization connects
Shou Tai areas group master controller instruction, completes point row or the parallel operation of Liang Duan three-phase and four-lines supply line.
Further preferred, the model of microprocessor is STM32F103.
Described platform becomes the control method of group's automatic control system, comprises the following steps：
1) the voltage transformer summation current transformer for becoming controller by the platform of platform area transformer side gathers supply lines in real time
The voltage and current of each phase in road, and calculate the size of each phase load, and by result of calculation by wireless communication unit send to
Platform area group's master controller；
2) voltage transformer I and voltage transformer II of interconnection switch, II point of I summation current transformer of current transformer are passed through
Not Cai Ji supply line's interconnection switch low voltage AC contactor both sides each phase voltage and electric current, and the result gathered is led to
Wireless communication unit is crossed to send to platform area group's master controller；
3) each phase load and interconnection switch institute of the platform area group's master controller according to transmitted by received platform becomes controller
Electric current, the voltage signal of transmission are judged, and form control instruction according to judged result, and control instruction passes through radio communication list
Member, which is sent to platform, becomes controller or interconnection switch, and putting into operation or moving back for controller or interconnection switch console area transformer is become by platform
Go out.
The step of described platform area transformer puts into operation be：
1) 1) each phase load of the platform area group's master controller according to transmitted by received platform becomes controller is judged, if
Do not work overloadingly, then normal operation, enters step 2 if occurring working overloadingly；
2) when platform area transformer works overloadingly, the platform of its side becomes controller and sends negative to platform area group's master controller
Lotus reaches critical value information, asks off-the-line；
3) platform area group's master controller sends the instruction that puts into operation to platform change controller adjacent thereto；
4) its adjacent platform becomes controller and received after instruction, its primary cut-out and low voltage AC contactor closure, phase
Lin Tai areas transformer puts into operation, after the completion of by implementing result report platform area group master controller；
5) platform area group's master controller sends off-the-line instruction, the low voltage AC contactor of interconnection switch to the interconnection switch of this section
Disconnect, result is reported into platform area group's master controller after completion off-the-line, platform area group's master controller sends off-the-line completion information to platform
Become controller, complete putting into operation for platform area's transformer.
The step of described platform area transformer is exited be：
1) platform becomes the voltage and electricity that controller gathers each phase of supply line by voltage transformer summation current transformer in real time
Stream, and calculate the size of each phase load；
If 2) load obtained works in underload for three days on end, platform becomes controller then will by wireless communication unit
The information on load obtained is sent to platform area group's master controller, and request is exited while being sent to platform area group's master controller；
3) platform area group master controller is judged according to the load condition received, if judging to exit, performs step
It is rapid 4)；
4) electricity of the voltage transformer I and voltage transformer II of this section of interconnection switch to low voltage AC contactor both sides is passed through
Pressure is sampled, and obtains whether three-phase voltage pressure difference and the real-time judge pressure difference between the bus of two ends exceed to threshold value, simultaneously
The current signal of low voltage AC contactor both sides is gathered by the summation current transformer II of current transformer I, the bus at two ends is judged
Whether phase sequence is consistent, if two ends pressure difference is no more than to threshold value and two ends bus wire phase sequence is consistent, and Ze Tai areas group's master controller passes through
The low voltage AC contactor closure of interconnection switch carries out mother；If detect one section of dead electricity in the supply line of two ends, directly lead to
The low voltage AC contactor closure for crossing interconnection switch carries out mother, realizes the arranged side by side of supply line；
5) after the completion of supply line is arranged side by side, is sent and exited command to platform change controller by platform area group's master controller, platform becomes
Controller controls primary cut-out and low voltage AC contactor to disconnect, and completes exiting for platform area's transformer.
Described platform area main transformer or the current loads of platform area transformer exceed the 80% of its rated capacity, then need into
Hang Tai areas transformers puts into operation.
The platform area transformer of described input supply line is less than its specified work(of supply lines section platform area transformer for three days on end
The 50% of rate, then need to carry out exiting for platform area's transformer.
The present invention is had an advantageous effect in that：
1st, of the present invention change group's automatic control system and control method can carry out distributed data acquisition, pass through
Transformer controller, interconnection switch are distributed in whole platform area transformer cluster, data acquisition can arrive each transformer and
Interconnection switch so that the data that platform becomes group's main controller are very complete, can form optimal control instruction.
2nd, of the present invention change group's automatic control system and control method can improve the robustness of supply network, a certain
When transformer breaks down, its automatism isolation can be gone out distribution network, it is load supplying to make other transformers, reduce equipment event
Power failure caused by barrier, improves Supply Security.
3rd, of the present invention change group's automatic control system and control method are energy-saving significantly, are thrown when load is relatively low
The less transformer of fortune, put into operation more transformer when load is heavier, transformer station high-voltage side bus is transported in load factor for 70% economy
Row state, greatly reduces the loss on transmission of distribution network.
4th, of the present invention becomes group's automatic control system and control method reliability height, using interconnection switch, in connection
During Luo Liangduan supply lines, it is ensured that two sections of voltage difference carries out mother action within safe range；When transformer is out of service
Make high-low pressure completely isolated with power network.
5th, of the present invention becomes group's automatic control system and control method intelligence degree height, can be formed accurately
Control instruction, reasonable in design improves operational efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of platform area of the present invention group's master controller；
Fig. 3 is the structural representation that platform of the present invention becomes controller；
Fig. 4 is the structural representation of interconnection switch of the present invention；
Fig. 5 becomes the connection diagram of controller or interconnection switch for platform area group's master controller, the platform of the present invention；
Fig. 6 is embodiments of the invention figure one；
Fig. 7 is embodiments of the invention figure two；
Fig. 8 is the structural representation of prior art；
Wherein, 1, power supply buses；2nd, supply line；3rd, platform becomes controller；4th, platform area transformer；5th, interconnection switch；6th, platform
Area's group's master controller；7th, platform area main transformer.
Embodiment
Embodiments of the invention are described further below in conjunction with the accompanying drawings：
As shown in figs. 1-7, of the present invention change group's automatic control system, including power supply buses 1 and N sections of supply lines
2, it is connected between power supply buses 1 and adjacent Liang Duan supply lines 2 by interconnection switch 5, is led between adjacent Liang Duan supply lines 2
Interconnection switch 5 is crossed to be connected；Setting table area main transformer 7 on described power supply buses 1, the side connected unit area of platform area main transformer 7
Setting table area transformer 4 is distinguished in group's master controller 6, supply line 1, the side of platform area transformer 4 is respectively connected with platform and becomes controller 3,
Platform becomes controller 3 and interconnection switch 5 and passes through wireless communication unit connected unit area group's master controller 6.
As shown in Fig. 2 the voltage transformer and electric current that described platform area group's master controller 6 includes connection power supply buses 1 are mutual
Sensor, voltage transformer summation current transformer connects the signal input part of microprocessor, and the COM1 connection of microprocessor is aobvious
The man-machine interaction unit and wireless communication unit of display screen, button composition, the control output end connection primary cut-out of microprocessor
And low voltage AC contactor, primary cut-out is used to control the access of transformer high-voltage input, and low voltage AC contactor is used for
The low-voltage output of transformer is controlled, the access of load, the model STM32F103 of microprocessor is realized.
As shown in figure 3, described platform, which becomes controller 3, includes the voltage transformer summation current transformer of connection supply line 2,
The signal input part of voltage transformer summation current transformer connection microprocessor, the COM1 connection display screen of microprocessor,
The man-machine interaction unit and wireless communication unit of button composition, the control output end connection primary cut-out and low pressure of microprocessor
A.C. contactor, primary cut-out is used for the access for controlling transformer high-voltage input, and low voltage AC contactor is used for console
The load access of area's transformer 4, the model STM32F103 of microprocessor.
As shown in figure 4, described interconnection switch 5 includes microprocessor, the COM1 connection radio communication of microprocessor
Unit, the control output end connection low voltage AC contactor of microprocessor, low voltage AC contactor is used to control supply line to bear
The access of lotus, low voltage AC contactor both sides set voltage transformer I and voltage transformer II, current transformer I and electricity respectively
Current transformer II, voltage transformer I, voltage transformer II, the summation current transformer II of current transformer I are all connected with microprocessor,
The model STM32F103 of microprocessor.
Described platform becomes the control method of group's automatic control system, comprises the following steps：
1) the voltage transformer summation current transformer for becoming controller 3 by the platform of the side of platform area transformer 4 gathers power supply in real time
The voltage and current of each phase of circuit, and the size of each phase load is calculated, and result of calculation is sent by wireless communication unit
To platform area group's master controller 6；
2) voltage transformer I and voltage transformer II of interconnection switch 5, the summation current transformer II of current transformer I are passed through
Each phase voltage and electric current of the low voltage AC contactor both sides of collection supply line interconnection switch 5 respectively, and by the knot gathered
Fruit is sent to platform area group's master controller 6 by wireless communication unit；
3) each phase load and interconnection switch 5 of the platform area group's master controller 6 according to transmitted by received platform becomes controller 3
Transmitted electric current, voltage signal are judged, and form control instruction according to judged result, and control instruction passes through radio communication
Unit, which is sent to platform, becomes controller 3 or interconnection switch 5, and controller 3 or the console area transformer 4 of interconnection switch 5 are become by platform
Put into operation or exit.
The step of described platform area transformer 4 puts into operation be：
1) each phase load of the platform area group's master controller 6 according to transmitted by received platform becomes controller 3 is judged, if
Do not surpass the 80% of its rated capacity, then normal operation, enters step 2 if the 80% of its rated capacity is occurred more than)；
2) platform area transformer 4 occur transfiniting work when, the platform of its side becomes controller 3 and sent to platform area group's master controller 6
Load reaches critical value information, asks off-the-line；
3) platform area group's master controller 6 sends the instruction that puts into operation to platform change controller 3 adjacent thereto；
4) its adjacent platform becomes controller 3 and received after instruction, its primary cut-out and low voltage AC contactor closure, phase
Lin Tai areas transformer 4 puts into operation, after the completion of by implementing result report platform area group master controller 6；
5) platform area group's master controller 6 sends off-the-line instruction to the interconnection switch 5 of this section, and the low-voltage alternating-current of interconnection switch 5 connects
Tentaculum is disconnected, and result is reported into platform area group's master controller 6 after completion off-the-line, and off-the-line is completed information hair by platform area group's master controller 6
Deliver to platform and become controller 3, complete putting into operation for platform area transformer 4.
The step of described platform area transformer 4 is exited be：
1) platform becomes the voltage and electricity that controller 3 gathers each phase of supply line by voltage transformer summation current transformer in real time
Stream, and calculate the size of each phase load；
If 2) load obtained is less than the 50% of its supply lines section platform area transformer rated power for three days on end, platform becomes
Controller 3 then by wireless communication unit by the information on load obtained send to platform area group master controller 6, while to platform area group
Master controller 6, which is sent, exits request；
3) platform area group master controller 6 is judged according to the load condition received, if judging to exit, performs step
Rapid 4；
4) by the voltage transformer I and voltage transformer II of this section of interconnection switch 5 to low voltage AC contactor both sides
Voltage is sampled, and obtains whether three-phase voltage pressure difference and the real-time judge pressure difference between the bus of two ends exceed to threshold value, together
When the current signals of low voltage AC contactor both sides is gathered by the summation current transformer II of current transformer I, judge the mother at two ends
Whether line phase sequence is consistent, if two ends pressure difference is no more than to threshold value and two ends bus wire phase sequence is consistent, and Ze Tai areas group's master controller 6 leads to
The low voltage AC contactor closure for crossing interconnection switch 5 carries out mother；If detect one section of dead electricity in the supply line of two ends, directly
Mother is carried out by the low voltage AC contactor closure of interconnection switch 5, the arranged side by side of supply line is realized；
5) after the completion of supply line is arranged side by side, is sent and exited command to platform change controller 3 by platform area group's master controller 6, platform
Become the control primary cut-out of controller 3 and low voltage AC contactor disconnects, complete exiting for platform area transformer 4.
As shown in fig. 6, putting into, exiting embodiment：
2# platforms become the process description exited：
Original state：Transformer all puts into operation.
2# exit criterias：II sections day peak power continuous three days less than 2# transformer rated power 50% (value can
To adjust).
(1) 2# platforms change controller sends to 1# platforms area group's master controller and exits request.
(2) because II sections relevant with I, III sections, 1# platforms area group's master controller is according to I, II, III sections of current loads
And three daily peak loads, judge that 2# platforms area transformer can be exited, II, III section are arranged side by side；Platform area group's master controller is sent to K23
Instruction side by side.
(3) K23 completes backward platform area group master controller feedback successful respond arranged side by side side by side.
(4) platform area group's master controller sends exit instruction to 2#, and 2#, which becomes, in order connects primary cut-out and low-voltage alternating-current
Tentaculum disconnects.
(5) platform area group's master controller has sent II, III section and column information to 3#, so far, II, III section completions are arranged side by side, by
3# becomes the network reconfiguration of power supply.
4# platforms become the process description of input：
Original state：The transformer stoppage in transit of 4# platforms area, IV sections and III sections are arranged side by side, by 3# transformer-supplieds.
4# puts into condition：3# transformers current loads exceed its rated capacity 80% (can setting valve).
(1) 3# platforms change controller sends load up to critical value information to 1# platforms area group's master controller, asks off-the-line.
(2) 1# platforms area group's master controller sends the instruction that puts into operation to 4# platforms change controller.
(3) 4# platforms become controller and received after instruction in order by its 10KV primary cut-out closure, low voltage AC contactor
Closure, after the completion of by implementing result report 1# platforms area group master controller.
(4) 1# platforms area group's master controller sends off-the-line instruction to K34.
(5) K34 is completed after off-the-line, and response is sent completely to 1# platforms area group's master controller.
(6) 1# platforms area group's master controller becomes controller transmission off-the-line completion information to 3# platforms, and so far, III, IV sections complete solution
Row.
As shown in fig. 7, failover procedure and maintenance embodiment：
(1) fault recovery：Scene is powered for IV, V sections by 4#, IV, V sections of dead electricity of 4# trip protections.
K14 interconnection switches detect IV section of power failure, and K14 interconnection switches are reported to platform area group's master controller, the group's master control of platform area
Device processed sends arranged side by side to K14 interconnection switches, and K14 interconnection switches closure is arranged side by side, and IV section restores electricity.Platform area group master controller again to
4# platforms area transformer is sent and put into operation, and 4# platforms area transformer input, paired running, platform area group's master controller is sent out to K14 interconnection switches
Send off-the-line to ask, carry out off-the-line.V sections of recovery processs are ibid.
(2) overhaul：Scene is II sections, III sections and powered side by side by 2#, is now to stoppage in transit 2# maintenance.Maintenance mode can be divided into
II sections of interruption maintenances and II sections of service without power-off.
Platform area group's master controller is sent to 3# platforms area transformer to be put into operation, and 3# platforms area transformer is put into operation, the group's master control of platform area
Device processed is sent to 2# platforms area transformer and stopped transport, and 2# platforms area transformer off-grid is stopped transport, if II sections of interruption maintenances, is directly overhauled, if
II sections of service without power-off, then send off-the-line, K23 interconnection switch off-the-lines are carried out by platform area group's master controller to K23 interconnection switches
Maintenance.
Reasonable in design of the present invention, being capable of real-time monitoring platform change operation number of units, the distribution to platform area transformer group's composition
Automatic network restructuring is carried out, optimizes Distributing network structure, operational efficiency is improved, underloading loss is reduced, improves distribution safe operation ability,
With stronger practicality.
The present invention is not limited in above-mentioned embodiment, essential scope of the those of ordinary skill in the art in the present invention
The variations, modifications, additions or substitutions inside made, should also belong to protection scope of the present invention.
Claims (10)
1. a kind of platform becomes group's automatic control system, it is characterised in that：Including power supply buses (1) and N sections of supply lines (2), power supply
It is connected between bus (1) and adjacent Liang Duan supply lines (2) by interconnection switch (5), between adjacent Liang Duan supply lines (2)
It is connected by interconnection switch (5)；
Setting table area main transformer (7) on described power supply buses (1), the group's main control of platform area main transformer (7) side connected unit area
Setting table area transformer (4) is distinguished in device (6), supply line (1), platform area transformer (4) side is respectively connected with platform and becomes controller
(3), platform becomes controller (3) and interconnection switch (5) and passes through wireless communication unit connected unit area group's master controller (6).
2. according to claim 1 change group's automatic control system, it is characterised in that：Described platform area group's master controller
(6) the voltage transformer summation current transformer of connection power supply buses (1) is included, voltage transformer summation current transformer connects micro- place
Manage the signal input part of device, COM1 connection display screen, the man-machine interaction unit and channel radio of button composition of microprocessor
Believe unit, the control output end connection primary cut-out and low voltage AC contactor of microprocessor, primary cut-out are used to control
The access of transformer high-voltage input, low voltage AC contactor is used for the low-voltage output for controlling transformer, realizes connecing for load
Enter.
3. according to claim 1 change group's automatic control system, it is characterised in that：Described platform becomes controller (3) bag
Include the voltage transformer summation current transformer of connection supply line (2), voltage transformer summation current transformer connection microprocessor
Signal input part, microprocessor COM1 connection display screen, button composition man-machine interaction unit and radio communication list
Member, the control output end connection primary cut-out and low voltage AC contactor of microprocessor, primary cut-out is used to control transformation
The access of device high voltage input terminal, low voltage AC contactor is used for the low-voltage output for controlling transformer, realizes the access of load.
4. according to claim 1 change group's automatic control system, it is characterised in that：Described interconnection switch (5) includes
Microprocessor, the COM1 connection wireless communication unit of microprocessor, the control output end connection low-voltage alternating-current of microprocessor
Contactor, low voltage AC contactor is used for the access for controlling supply line's load, and low voltage AC contactor both sides set electricity respectively
Press transformer I and voltage transformer II, the summation current transformer II of current transformer I, voltage transformer I, voltage transformer II, electricity
The summation current transformer II of current transformer I is all connected with microprocessor.
5. the platform according to claim 2,3 or 4 becomes group's automatic control system, it is characterised in that：Described microprocessor
Model is STM32F103.
6. the control method of according to claim 1 change group's automatic control system, it is characterised in that：Including following step
Suddenly：
1) the voltage transformer summation current transformer for becoming controller (3) by the platform of platform area transformer (4) side gathers power supply in real time
The voltage and current of each phase of circuit, and the size of each phase load is calculated, and result of calculation is sent by wireless communication unit
To platform area group's master controller (6)；
2) voltage transformer I and voltage transformer II of interconnection switch (5), II point of I summation current transformer of current transformer are passed through
Not Cai Ji supply line's interconnection switch (5) low voltage AC contactor both sides each phase voltage and electric current, and by the knot gathered
Fruit is sent to platform area group's master controller (6) by wireless communication unit；
3) each phase load and interconnection switch of the platform area group's master controller (6) according to transmitted by received platform becomes controller (3)
(5) electric current, voltage signal transmitted by are judged, and form control instruction according to judged result, and control instruction passes through wireless
Communication unit, which is sent to platform, becomes controller (3) and interconnection switch (5), and controller (3) and interconnection switch (5) console is become by platform
Area's transformer (4) putting into operation or exiting.
7. the control method of according to claim 6 change group's automatic control system, it is characterised in that：Described platform area becomes
The step of depressor (4) puts into operation be：
1) each phase load of the platform area group's master controller (6) according to transmitted by received platform becomes controller (3) is judged, if
Do not work overloadingly, then normal operation, enters step 2 if occurring working overloadingly)；
2) when platform area transformer (4) works overloadingly, the platform of its side becomes controller (3) to platform area group's master controller (6)
Load is sent up to critical value information, off-the-line is asked；
3) platform area group's master controller (6) sends the instruction that puts into operation to platform change controller (3) adjacent thereto；
4) its adjacent platform becomes controller (3) and received after instruction, its primary cut-out and low voltage AC contactor closure, adjacent
Platform area transformer (4) put into operation, after the completion of by implementing result report platform area group master controller (6)；
5) platform area group's master controller (6) sends off-the-line instruction, the low-voltage alternating-current of interconnection switch (5) to the interconnection switch (5) of this section
Contactor is disconnected, and result is reported into platform area group's master controller (6) after completion off-the-line, and platform area group's master controller (6) completes off-the-line
Information, which is sent to platform, becomes controller (3), completes putting into operation for platform area transformer (4).
8. the control method of according to claim 6 change group's automatic control system, it is characterised in that：Described platform area becomes
The step of depressor (4) is exited be：
1) platform becomes the voltage and electricity that controller (3) gathers each phase of supply line by voltage transformer summation current transformer in real time
Stream, and calculate the size of each phase load；
If 2) load obtained works in underload for three days on end, platform becomes controller (3) then by wireless communication unit by institute
The information on load of acquisition is sent to platform area group's master controller (6), and request is exited while being sent to platform area group's master controller (6)；
3) platform area group's master controller (6) is judged according to the load condition received, if judging to exit, performs step
4)；
4) electricity of the voltage transformer I and voltage transformer II of this section of interconnection switch (5) to low voltage AC contactor both sides is passed through
Pressure is sampled, and obtains whether three-phase voltage pressure difference and the real-time judge pressure difference between the bus of two ends exceed to threshold value, simultaneously
The current signal of low voltage AC contactor both sides is gathered by the summation current transformer II of current transformer I, the bus at two ends is judged
Whether phase sequence is consistent, if two ends pressure difference is no more than to threshold value and two ends bus wire phase sequence is consistent, Ze Tai areas group's master controller (6) leads to
The low voltage AC contactor closure for crossing interconnection switch (5) carries out mother；If detect one section of dead electricity in the supply line of two ends, directly
The low voltage AC contactor closure for connecting interconnection switch (5) carries out mother, realizes the arranged side by side of supply line；
5) after the completion of supply line is arranged side by side, is sent and exited command to platform change controller (3) by platform area group's master controller (6), platform
Become controller (3) control primary cut-out and low voltage AC contactor disconnects, complete exiting for platform area transformer (4).
9. the control method of according to claim 7 change group's automatic control system, it is characterised in that：Described platform area master
The current loads of transformer (7) or platform area transformer (4) exceed the 80% of its rated capacity, then need to carry out platform area transformer
(4) put into operation.
10. the control method of according to claim 8 change group's automatic control system, it is characterised in that：Described input
The platform area transformer (4) of supply line is less than the 50% of its supply lines section platform area transformer rated power for three days on end, then needs
Carry out exiting for platform area transformer (4).
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