CN108418312A - A kind of closed loop network tune electricity decision control system - Google Patents
A kind of closed loop network tune electricity decision control system Download PDFInfo
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- CN108418312A CN108418312A CN201810509948.8A CN201810509948A CN108418312A CN 108418312 A CN108418312 A CN 108418312A CN 201810509948 A CN201810509948 A CN 201810509948A CN 108418312 A CN108418312 A CN 108418312A
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- H02J13/0017—
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00019—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
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- H02J13/0075—
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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
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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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
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention discloses a kind of closed loop network tune electricity decision control systems, measure the monitoring data of mutual inductor acquisition power distribution network open loop point both sides, the monitoring data of open loop point both sides are sent to intelligent decision backstage by transmitting device, and intelligent decision backstage carries out cyclization condition distinguishing；It is such as unsatisfactory for cyclization condition, intelligent decision backstage sends service condition adjust instruction to teletransmission main station system, so that power distribution network meets cyclization condition；Such as meet cyclization condition, intelligent decision backstage sends cyclization instruction to field programmable gate array；Intelligent decision backstage judges whether the power distribution network after cyclization overloads, and if the power distribution network after cyclization does not overload, power distribution network keeps cyclization state；Such as the power distribution network overload after cyclization, open loop instruction is sent；Meanwhile intelligent decision backstage carries out oscillation differentiation, judges whether power distribution network starts anti-oscillation device and whether keep cyclization state.The present invention adjusts electricity without having a power failure, and can improve distribution network reliability, ensures the safe and stable operation of power grid when cyclization in short-term.
Description
Technical field
The present invention relates to technical field of power systems, more particularly to a kind of closed loop network tune electricity decision control system.
Background technology
There are multiple voltage class, each voltage class to be associated with, formed by the electromagnetic coupling of power transformer in electric system
The Complex Power Network of multi-voltage grade has the connection of electrical quantity by complicated electric network composition between network Zhong Ge power plant, substation
System.Therefore, high and low electromagnetic circle net is a kind of common structure in electric system, and usual electromagnetic looped network is all in low-pressure side certain point
It disconnects, uses electricity net safety stable of the open loop operation mode to ensure that electric system is broken down at random when.If using cyclization
Operation, the tripping once high-pressure side is broken down, power flow transfer to low-pressure side will cause the apparatus overloads such as transformer, power transmission line, very
To causing the stabilization of power grids to destroy, large area blackout.
The cyclization tune electricity of power distribution network is always the technical barrier for perplexing electric system operation of power networks.There is stronger technical support
In power supply unit, the electromagnetic looped network tune electricity only less than 20% adjusts electricity using cyclization tune electricity, more than 80% or using having a power failure, and
The weaker power supply unit of technical support all adjusts electricity using having a power failure substantially.Have in stronger technical support power supply unit, using cyclization tune
The method of electricity is as follows：First, it is calculated and is analyzed using power grid off-line simulation, the electromagnetic looped network under a certain specific structure is differentiated, at certain
Whether the cyclization under the conditions of one specific voltage, trend and load level etc. meets condition (voltage difference and phase angle difference).However, distribution
The variation of net network structure is very fast, and also the moment changes operating condition, the boundary condition of simulation calculation is extremely difficult to, therefore, using this
Kind mode specifies electromagnetic looped network cyclization to be very difficult to realization；Second, in-circuit emulation meter is used in dispatch automated system
Calculation mode supports cyclization, this is needed in distribution automation system, and telecontrol information acquisition is complete, and Power grid structure is maintained into
Position, and these requirements are substantially unpractical in power distribution network, the variation of one side rack is too fast, and another aspect distribution information is adopted
Collection rate is extremely low, is not enough to the condition of support in-circuit emulation；Third uses automatic switching device of standby power supply to switch on the spot.This mode
The success rate of switching is not said first, it needs to disconnect power switch, allows busbar and institute for load instantaneous power failure, device monitoring to busbar
Backup Power Switch is closed in decompression, action.Although this mode customer outage hours are very short, frequency of power cut has increase, still
Can not be so that user continuously reliably powers.If backup circuit breaker, not in same substation, this adjusts electric mode and is not suitable for；The
Four, according to preresearch estimates, cyclization tune electricity is forced with operating experience, during cyclization in short-term, there are still the risk of high-voltage side fault,
This is the power grid risk that can not avoid.
Therefore, in closed loop network tune electricity, how to ensure power distribution network safe and stable operation, and continuously reliable to user
Ground powers, and becomes those skilled in the art's urgent problem to be solved.
Invention content
To overcome problems of the prior art, the present invention to provide a kind of closed loop network tune electricity decision control system.
In order to solve the above technical problems, a kind of technical solution of closed loop network tune electricity decision control system of the present invention
For：
Including detection control apparatus intelligent decision backstage and be set at open loop point；The detection control apparatus includes：
Measure mutual inductor, field programmable gate array, driving circuit, breaker tripping and closing relay, anti-oscillation device and transmitting device；
The monitoring data for measuring mutual inductor and being used to acquire power distribution network open loop point both sides, the monitoring of open loop point both sides
Data include the voltage difference and phase angle difference of open loop point both sides；
The transmitting device is used to the monitoring data of open loop point both sides being sent to the intelligent decision backstage；It is described
Intelligent decision backstage is for carrying out cyclization condition distinguishing；
When being unsatisfactory for cyclization condition, the intelligent decision backstage refers to for sending service condition adjustment to teletransmission main station system
It enables, so that power distribution network meets cyclization condition；
When meeting cyclization condition, the intelligent decision backstage refers to for sending cyclization to the field programmable gate array
It enables；
The field programmable gate array is used to be instructed according to the cyclization, and controlling the driving circuit makes the breaker tripping and closing
Relay closes a floodgate；
The intelligent decision backstage is additionally operable to judge whether the power distribution network after cyclization overloads, the non-mistake of power distribution network after cyclization
It carries, power distribution network keeps cyclization state；Power distribution network overload after cyclization sends open loop to the field programmable gate array and refers to
It enables；
The field programmable gate array is used to be instructed according to the open loop, and controlling the driving circuit makes the breaker tripping and closing
Relay trips；
Meanwhile the intelligent decision backstage is additionally operable to carry out oscillation differentiation, judges whether power distribution network starts anti-oscillation device
And whether keep cyclization state.
Further, the intelligent decision backstage is additionally operable to,
Judge whether voltage difference and the phase angle difference of open loop point both sides are out-of-limit；
When at least one of the voltage difference of open loop point both sides and phase angle difference are out-of-limit, do not allow to execute Loop Closing Operation and to
Teletransmission main station system sends the first service condition adjust instruction, and the first service condition adjust instruction includes that voltage difference adjustment refers to
Order and/or phase angle difference adjust instruction；
When the voltage difference and phase angle difference of open loop point both sides be not out-of-limit, judge whether power distribution network overloads；
When power distribution network overload, the second service condition adjust instruction is sent to the teletransmission main station system；
When power distribution network does not overload, sending cyclization to the field programmable gate array instructs.
Further, the mutual inductor that measures is additionally operable to obtain the power distribution network operating parameter before cyclization, the power distribution network fortune
Row parameter includes：The three-phase voltage and the three-phase electricity of three-phase current and distribution network line end of power distribution network transmission line of electricity head end
Pressure and three-phase current；
The transmitting device is additionally operable to the power distribution network operating parameter before the cyclization being sent to the intelligent decision backstage；
The intelligent decision backstage is additionally operable to according to the power distribution network operating parameter before the cyclization, before calculating closed loop network
Trend parameter under maximum operational mode, the trend parameter include：The self-impedance of power distribution network transmission line of electricity, mutual impedance, from
Admittance and transadmittance.
Further, the mutual inductor that measures is additionally operable to obtain the power distribution network operating parameter after cyclization；The transmitting device
It is additionally operable to the power distribution network operating parameter after the cyclization being sent to the intelligent decision backstage；
The intelligent decision backstage is additionally operable to according to the power distribution network operating parameter after the cyclization, after calculating closed loop network
The trend parameter under maximum operational mode；The trend parameter before and after cyclization is compared, the oscillation of power distribution network after cyclization is carried out
Differentiate；
In trend parameter before and after the cyclization, the change rate of four parameters is respectively less than 35%, and power distribution network keeps cyclization
State；
In trend parameter before and after the cyclization, the change rate of at least one parameter is more than 45%, the intelligent decision
Backstage is additionally operable to send open loop instruction to the field programmable gate array；
In trend parameter before and after the cyclization, the change rate of at least one parameter is matched between 35% to 45%
Power grid keeps cyclization state, the intelligent decision backstage to be additionally operable to open to the anti-oscillation device of field programmable gate array transmission
Dynamic instruction；
The field programmable gate array is additionally operable to, according to the anti-oscillation device enabled instruction, control the driving circuit
Start the anti-oscillation device.
Further, the detection control apparatus further includes camera and image acquisition device, and the intelligent decision backstage is wrapped
Include display screen；
The camera is used to shoot the image of closed loop network point；
Described image collector is used to acquire the image of the closed loop network point, and by the figure of the closed loop network point
As being sent to the field programmable gate array；
The transmitting device is additionally operable to the image of the closed loop network point being sent to the intelligent decision backstage, described
The display screen on intelligent decision backstage is used to show the image of the closed loop network point.
By above technical scheme it is found that closed loop network tune electric control system provided by the present application, when needing to carry out cyclization
When operation, the voltage difference and phase angle difference of power grid open loop point both sides are obtained in real time, judge whether to meet cyclization by intelligent decision backstage
Condition, if being unsatisfactory for cyclization condition, intelligent decision backstage sends service condition adjust instruction to teletransmission main station system, so as to match
Power grid meets cyclization condition；If meeting cyclization condition, intelligent decision backstage sends cyclization instruction, executes Loop Closing Operation.Work as conjunction
After ring, further judging whether power distribution network overloads, intelligent decision backstage sends open loop instruction if overload, meanwhile, intelligent decision
Backstage carries out oscillation differentiation, judges whether power distribution network starts anti-oscillation device and whether keep cyclization state.The application can be accurate
Really judge whether power distribution network current operating conditions meet cyclization condition, provide can normal cyclization aid decision opinion, and energy
System call interception opinion is provided, power grid is made to meet cyclization condition, to avoid being influenced caused by adjusting electricity to have a power failure user, raising is matched
Power grid power supply reliability index, and can guarantee the safe and stable operation of power grid during cyclization in short-term.
Description of the drawings
Fig. 1 is a kind of structure diagram of closed loop network tune electricity decision control system shown in the embodiment of the present invention；
Fig. 2 is the electromagnetic looped network configuration diagram of the power distribution network shown in the embodiment of the present invention；
Fig. 3 is the circuit diagram of the driving circuit shown in the embodiment of the present invention；
Fig. 4 is the parameter model figure of the power distribution network three phase line shown in the embodiment of the present invention.
Specific implementation mode
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with attached drawing, it is right
Technical solution in the embodiment of the present application is clearly and completely described.
Fig. 1 is a kind of structure diagram of closed loop network tune electricity decision control system shown in the embodiment of the present application, including
Intelligent decision backstage 20, transmitting device 30 and the detection control apparatus for being set at open loop point (i.e. cyclization measurement point in Fig. 1)
10；The detection control apparatus 10 includes：Measure mutual inductor 101,102 (Field- of field programmable gate array
Programmable Gate Array, FPGA), driving circuit 103, breaker tripping and closing relay 104 and anti-oscillation device 105.
As shown in Fig. 2, for the electromagnetic looped network configuration diagram of the power distribution network shown in the embodiment of the present application, there are 3 electricity in figure
Three electromagnetic looped networks for pressing grade to constitute：First, 220kV substation 1,220kV substations 2 and 110kV substations 3 constitute one
The electromagnetic looped network of a 220/110kV；Second, 220kV substation 1,220kV substations 2,110kV substations 1,110kV substations
2,10kV substations 1 and 10kV substations 2 constitute the electromagnetic looped network of a 220/10kV；Third, in special circumstances, 220kV
Substation 1,220kV substations 2,110kV substations 1,110kV substations 2,110kV substations 3,1 and of 10kV substations
10kV substations 2 constitute the electromagnetic looped network of a 110/10kV.
In general, in view of the factors such as power grid security and capacity of short circuit, electromagnetic looped network can open loop operation, only in cyclization
Just Electromagnetic coupling in short-term when adjusting electricity.By taking Fig. 2 as an example, for the electromagnetic looped network of 220/110kV, usually in 110kV substations 3
121 or 122 a certain switches are broken as open loop point, therefore detection control apparatus #1 is arranged at 121 and 122；The electricity of 220/10kV
Magnet ring net can a certain switch in the 021 of 10kV substations 1 or 022 be broken as open loop point or 10kV substations 2 031 or
032 a certain switch is broken as open loop point, therefore, detection control apparatus #2 is arranged at 021 and 022, is arranged at 031 and 032
Detection control apparatus #3.
Measure the monitoring data that mutual inductor 101 is used to acquire power distribution network open loop point both sides, the monitoring of open loop point both sides
Data include the voltage difference and phase angle difference of open loop point both sides.It measures mutual inductor 101 and may include current transformer and voltage transformer.
Transmitting device 30 is used to the monitoring data of open loop point both sides being sent to intelligent decision backstage 20, intelligent decision
20 for carrying out cyclization condition distinguishing from the background.
Detection control apparatus 10 and intelligent decision backstage 20 are communicated by transmitting device 30, and communication mode can be wireless
UART (Universal Asynchronous Receiver/ can be used in communication and/or wire communication, transmitting device 30
Transmitter, universal asynchronous receiving-transmitting transmitter).Wherein, WIFI and/or GPRS communications, wire communication can be used in wireless communication
Fiber optic communication can be used, can specifically be selected according to actual needs.
Intelligent decision backstage 20 is for when carrying out cyclization condition distinguishing, if being unsatisfactory for cyclization condition, intelligent decision to be from the background
20 to teletransmission main station system for sending service condition adjust instruction, so that power distribution network meets cyclization condition.Intelligent decision backstage
20 be to send service condition adjust instruction to teletransmission main station system by transmitting device 30, and teletransmission main station system is according to receiving
Service condition adjust instruction targetedly adjusts the service condition of power distribution network, power distribution network is made to meet cyclization condition.
If meeting cyclization condition, intelligent decision backstage 20 is instructed for sending cyclization to field programmable gate array 102,
Similarly, intelligent decision backstage 20 sends cyclization instruction, detection control by transmitting device 30 to field programmable gate array 102
It is all to be related to parameter, data and the transmission of instruction between device 10 and intelligent decision processed backstage 20, it is complete by transmitting device 30
At following to repeat no more.
Field programmable gate array 102 is used to be instructed according to the cyclization, and control driving circuit 103 makes breaker tripping and closing relay
104 close a floodgate, and execute Loop Closing Operation.
Intelligent decision backstage 20 is additionally operable to judge whether the power distribution network after cyclization overloads, if the non-mistake of the power distribution network after cyclization
It carries, power distribution network keeps cyclization state；If the power distribution network overload after cyclization sends open loop to field programmable gate array 102 and refers to
It enables.
For the row of field-programmable gate array 102 for being instructed according to the open loop, control driving circuit 103 makes breaker tripping and closing relay
104 trippings, execute operated open-loop.During closed loop network, it may occur however that high-voltage side fault trips, and then causes equipment and distribution
Net overload, executes operated open-loop, it is ensured that power distribution network safe and stable operation at this time.
Meanwhile intelligent decision backstage 20 is additionally operable to carry out oscillation differentiation, judges whether power distribution network starts anti-oscillation device 105
And whether keep cyclization state.During closed loop network, power distribution network may be caused due to electric system overdamp etc.
Oscillation of power, at this point, carrying out oscillation differentiation by intelligent decision backstage 20, accordingly starting anti-oscillation device 105 or carrying out open loop behaviour
Make, influenced by oscillation when can be to avoid closed loop network, and then ensures power distribution network safe and stable operation.
Detection control apparatus 10 is respectively disposed in normal open-loop point, open loop point both sides are acquired by detection control apparatus 10
Voltage difference and phase angle difference, by 30 teletransmission of transmitting device to intelligent decision backstage 20, according to predetermined identification tactic, involutive ring condition
Carry out intelligent distinguishing, provide can the aid decision opinion of normal cyclization provide system call interception if being unsatisfactory for cyclization condition
Suggestion so that power grid is met cyclization condition to reduce the voltage difference and phase angle difference of cyclization point both sides.During cyclization if it happens
High-voltage side fault trips, and causes equipment and power distribution network to be overloaded, then executes operated open-loop；During cyclization, it may occur however that power shakes
Swing, intelligent decision backstage should carry out oscillation differentiation, according to predetermined identification tactic judge whether to start anti-oscillation device 105 or
No execution operated open-loop improves distribution network reliability index to avoid being influenced caused by adjusting electricity to have a power failure user, and
It can guarantee the safe and stable operation of power grid during cyclization in short-term.
As shown in figure 3, in closed loop network tune electric control system, the electricity of the driving circuit 103 of detection control apparatus 10
Line structure figure, since left end：L is power firestreak, and N is zero-power line, is the power supply of driving circuit；YM101 is resistance, is prevented
Puncture short；It is direct current that U102 and U103, which is by AC conversion, to provide DC power supply；CD101 and CD102 is 1000 μ F
Capacitance, for circuit adjust；Peripheral hardware part is connection breaker tripping and closing relay, and U104 is chip LM2576, is closed for driving to jump
The combined floodgate of lock relay and tripping, and then realize the cyclization and open loop of power distribution network；U105 is chip LM2576, chip LM2576,
Amplifying circuit V1018550 and amplifying circuit K101JZC-32FA drive anti-oscillation device 105 jointly, realize anti-oscillation device
105 start and stop.
Further, intelligent decision backstage 20 is additionally operable to, judge open loop point both sides voltage difference and phase angle difference whether
It is out-of-limit；If at least one of the voltage difference and phase angle difference of open loop point both sides are out-of-limit, do not allow execute Loop Closing Operation and to
Teletransmission main station system sends the first service condition adjust instruction, and the first service condition adjust instruction includes that voltage difference adjustment refers to
Order and/or phase angle difference adjust instruction.Teletransmission main station system adjusts the operation shape of power distribution network according to the first service condition adjust instruction
State so that voltage difference and/or phase angle difference meet cyclization condition.
If the voltage difference and phase angle difference of open loop point both sides be not out-of-limit, it is (i.e. main to judge whether power distribution network overloads
Judge whether power distribution network electric current is out-of-limit)；If power distribution network overloads, the adjustment of the second service condition is sent to the teletransmission main station system
Instruction, teletransmission main station system adjusts the operating status of power distribution network according to the second service condition adjust instruction, to meet cyclization item
Part；If power distribution network does not overload, cyclization instruction is sent to field programmable gate array 102, executes Loop Closing Operation.
Further, mutual inductor 101 is measured, is additionally operable to obtain the power distribution network operating parameter before cyclization, the power distribution network fortune
Row parameter includes：The three-phase voltage and the three-phase electricity of three-phase current and distribution network line end of power distribution network transmission line of electricity head end
Pressure and three-phase current；Transmitting device 30 is additionally operable to the power distribution network operating parameter before the cyclization being sent to, intelligent decision backstage
20；Intelligent decision backstage 20, is additionally operable to according to the power distribution network operating parameter before the cyclization, calculates before closed loop network in maximum
Trend parameter under the method for operation, the trend parameter include：The self-impedance of power distribution network transmission line of electricity, mutual impedance, self-admittance and
Transadmittance.
Fig. 4 is the parameter model figure of power distribution network three phase line, in figure, R0、L0、C0、G0Respectively three phase transmission line is every
The self-resistance of phase unit length, self-inductance, direct-to-ground capacitance, over the ground conductance；C、G、 M0Mutual electricity between respectively arbitrary two-phase
Appearance, transconductance, mutual inductance.In three-phase distribution cable road, mutual capacitance, transconductance and mutual inductance are equal.Three phase line is at x
Voltage (ua、ubAnd uC), electric current (ia、ibAnd iC) as follows with the relational expression of line parameter circuit value：
Formula (1) is write as to the form such as formula (2) of phasor：
The trend parameter：Self-impedance Z0=R0+jωL0, mutual impedance ZM=j ω M0, self-admittance Y0=G0+jωC0, mutual conductance
Receive YM=G+j ω C solve formula (2) and obtain：
In formula:r1=√ Y0(Z0+2Zm), r2=√ (Z0-Zm)(Y0+3Ym)；Ua1、Ub1、Uc1、Ia1、Ib1、Ic1Respectively line
Road head end, i.e. three-phase voltage and three-phase current at x=0 points.
Line end, i.e. the three-phase voltage U at x=l (l is the length of transmission line of electricity)a2、Ub2、Uc2And three-phase current
Ia2、Ib2、Ic2Respectively：
It is obtained by formula (4)：
Enable U2=Ua2+Ub2+Uc2, U1=Ua1+Ub1+Uc1, I1=Ia1+Ib1+Ic1, I2=Ia2+Ib2+Ic2, obtained by formula (5)：
It is obtained shown in the trend parameter such as formula (8) by formula (6) and formula (7)：
As long as utilizing the three-phase voltage and three-phase electricity that measure 101 synchro measure power distribution network transmission line of electricity head and the tail both ends of mutual inductor
Flow Ua1、Ub1、Uc1、Ia1、Ib1、Ic1And Ua2、Ub2、Uc2、Ia2、Ib2、Ic2, you can power distribution network is calculated in maximum according to formula (8)
Trend parameter Z under the method for operation0、Zm、Y0And Ym。
Further, mutual inductor 101 is measured to be additionally operable to obtain the power distribution network operating parameter after cyclization, the distribution network operation
Parameter includes：The three-phase voltage and three-phase current and the three-phase voltage of distribution network line end of power distribution network transmission line of electricity head end
And three-phase current；Transmitting device 30 is additionally operable to the power distribution network operating parameter after the cyclization being sent to intelligent decision backstage 20；
Intelligent decision backstage 20 is additionally operable to according to the power distribution network operating parameter after the cyclization, calculate after closed loop network
The trend parameter under maximum operational mode, with reference to aforementioned formula (8) calculate closed loop network after under maximum operational mode
The trend parameter；
Then, the trend parameter before and after cyclizations is compared by intelligent decision backstage 20, after carrying out cyclization the oscillation of power distribution network sentence
Not；
If in the trend parameter before and after the cyclization, the change rate of four parameters is respectively less than 35%, and power distribution network keeps closing
Ring status；
If in the trend parameter before and after the cyclization, the change rate of at least one parameter is more than 45%, after intelligent decision
Platform 20 is additionally operable to send open loop instruction to field programmable gate array 102, executes open loop action, and the safety to ensure power distribution network is steady
Fixed operation；
If in the trend parameter before and after the cyclization, the change rate of at least one parameter between 35% to 45%,
Power distribution network keeps cyclization state, and intelligent decision backstage 20, which is additionally operable to send anti-oscillation device to field programmable gate array 102, opens
Dynamic instruction；
Field programmable gate array 102 is additionally operable to, according to the anti-oscillation device enabled instruction, control the driving circuit
103 start anti-oscillation device 105, prevent oscillation, to avoid being influenced caused by adjusting electricity to have a power failure user, improve distribution
Net power supply reliability index, and can guarantee the safe and stable operation of power grid during cyclization in short-term.
Further, detection control apparatus 10 further includes camera 106 and image acquisition device 107, intelligent decision backstage 20
Including display screen 201；
Camera 106 is used to shoot the image of power distribution network open loop point (cyclization point)；
Image acquisition device 107 is used to acquire the image of the closed loop network point, and by the figure of the closed loop network point
As being sent to field programmable gate array 102, then field programmable gate array 102 is by the closed loop network point of reception
Image is sent to transmitting device 30；
Transmitting device 30 is additionally operable to the image of the closed loop network point being sent to intelligent decision backstage 20, intelligent decision
20 display screen 201 is used to show the image of the closed loop network point from the background, makes operating personnel distal end real time monitoring power distribution network
Image before and after cyclization is convenient for the operation and maintenance of power distribution network, is conducive to improve distribution network reliability index, and can guarantee short
The safe and stable operation of power grid during Shi Hehuan.
In the present embodiment, LCD screen or LED screen can be selected in display screen 201, and 107 type selecting of image acquisition device is OV6620, real
The image acquisition device of other different models, such as OV7670 or OV7620 can be also selected in the use of border as needed.
In the present embodiment, powerful intelligent server can be selected in intelligent decision backstage 20, which includes at least
Following several parts：A. power supply and crystal oscillator；B. output equipment P1, before and after the real time monitoring closed loop network of staff distal end
Image；C. input equipment P2, such as keyboard or keyboard are easily modified predetermined identification tactic (cyclization condition distinguishing and oscillation differentiate)
And historical data and the image etc. for inquiring server storage；D.UART, convenient for detection control apparatus 10 and intelligent decision backstage
20 communication, so that intelligent decision backstage 20 receives supplemental characteristic and image that detection control apparatus 10 are sent, and to teletransmission
The service condition adjust instruction that main station system is sent also makes detection control apparatus 10 receive the cyclization that intelligent decision backstage 20 is sent
Instruction, open loop instruction and anti-oscillation device enabled instruction；E. processor P3, for carry out cyclization differentiation and oscillation differentiate, and
The generation etc. of every control instruction；F. memory P4, data and image for storing the transmission of detection control apparatus 10, is convenient for work
Make personnel inquiry.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the present invention
Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or
Person's adaptive change follows the general principle of the present invention and includes undocumented common knowledge in the art of the invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the invention is not limited in the precision architectures for being described above and being shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (5)
1. a kind of closed loop network tune electricity decision control system, which is characterized in that including intelligent decision backstage, transmitting device and set
The detection control apparatus being placed at open loop point；The detection control apparatus includes：Measure mutual inductor, field programmable gate array,
Driving circuit, breaker tripping and closing relay and anti-oscillation device；
The monitoring data for measuring mutual inductor and being used to acquire power distribution network open loop point both sides, the monitoring data of open loop point both sides
Include the voltage difference and phase angle difference of open loop point both sides；
The transmitting device is used to the monitoring data of open loop point both sides being sent to the intelligent decision backstage；The intelligence
Decision backstage is for carrying out cyclization condition distinguishing；
When being unsatisfactory for cyclization condition, the intelligent decision backstage is used to send service condition adjust instruction to teletransmission main station system,
So that power distribution network meets cyclization condition；
When meeting cyclization condition, the intelligent decision backstage to the field programmable gate array for sending cyclization instruction；
The field programmable gate array is used to be instructed according to the cyclization, and controlling the driving circuit makes the breaker tripping and closing relay
Device closes a floodgate；
The intelligent decision backstage is additionally operable to judge whether the power distribution network after cyclization overloads, and power distribution network after cyclization does not overload,
Power distribution network keeps cyclization state；Power distribution network overload after cyclization sends open loop instruction to the field programmable gate array；
The field programmable gate array is used to be instructed according to the open loop, and controlling the driving circuit makes the breaker tripping and closing relay
Device trips；
Meanwhile intelligent decision backstage is additionally operable to carry out oscillation differentiation, judge power distribution network whether start anti-oscillation device and
Whether cyclization state is kept.
2. a kind of closed loop network tune electricity decision control system according to claim 1, which is characterized in that the intelligence is determined
Plan backstage is additionally operable to,
Judge whether voltage difference and the phase angle difference of open loop point both sides are out-of-limit；
When at least one of the voltage difference of open loop point both sides and phase angle difference are out-of-limit, do not allow to execute Loop Closing Operation and to teletransmission
Main station system sends the first service condition adjust instruction, and the first service condition adjust instruction includes voltage difference adjust instruction
And/or phase angle difference adjust instruction；
When the voltage difference and phase angle difference of open loop point both sides be not out-of-limit, judge whether power distribution network overloads；
When fruit power distribution network overload, the second service condition adjust instruction is sent to the teletransmission main station system；
When power distribution network does not overload, sending cyclization to the field programmable gate array instructs.
3. a kind of closed loop network tune electricity decision control system according to claim 1 or 2, which is characterized in that the survey
Amount mutual inductor is additionally operable to obtain the power distribution network operating parameter before cyclization, and the power distribution network operating parameter includes：Power distribution network power transmission line
The three-phase voltage and three-phase current of road head end and the three-phase voltage and three-phase current of distribution network line end；
The transmitting device is additionally operable to the power distribution network operating parameter before the cyclization being sent to the intelligent decision backstage；
Intelligent decision backstage is additionally operable to according to the power distribution network operating parameter before the cyclization, is calculated before closed loop network most
Trend parameter under the big method of operation, the trend parameter include：The self-impedance of power distribution network transmission line of electricity, mutual impedance, self-admittance
And transadmittance.
4. a kind of closed loop network tune electricity decision control system according to claim 3, which is characterized in that described to measure mutually
Sensor is additionally operable to obtain the power distribution network operating parameter after cyclization；The transmitting device is additionally operable to the power distribution network fortune after the cyclization
Row parameter is sent to the intelligent decision backstage；
Intelligent decision backstage is additionally operable to according to the power distribution network operating parameter after the cyclization, is calculated after closed loop network most
The trend parameter under the big method of operation；The trend parameter before and after cyclization is compared, the oscillation differentiation of power distribution network after cyclization is carried out；
In trend parameter before and after the cyclization, the change rate of four parameters is respectively less than 35%, and power distribution network keeps cyclization state；
In trend parameter before and after the cyclization, the change rate of at least one parameter is more than 45%, the intelligent decision backstage
It is additionally operable to send open loop instruction to the field programmable gate array；
In trend parameter before and after the cyclization, the change rate of at least one parameter is between 35% to 45%, power distribution network
Cyclization state, the intelligent decision backstage is kept to be additionally operable to refer to the anti-oscillation device startup of field programmable gate array transmission
It enables；
The field programmable gate array is additionally operable to, according to the anti-oscillation device enabled instruction, control the driving circuit and start
The anti-oscillation device.
5. a kind of closed loop network tune electricity decision control system according to claim 1, which is characterized in that the detection control
Device processed further includes camera and image acquisition device, and the intelligent decision backstage includes display screen；
The camera is used to shoot the image of closed loop network point；
Described image collector is used to acquire the image of the closed loop network point, and the image of the closed loop network point is sent out
It send to the field programmable gate array；
The transmitting device is additionally operable to the image of the closed loop network point being sent to the intelligent decision backstage, the intelligence
The display screen on decision backstage is used to show the image of the closed loop network point.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585555A (en) * | 2020-05-22 | 2020-08-25 | 广东电网有限责任公司 | Anti-oscillation circuit and method and intelligent terminal |
| CN113985199A (en) * | 2021-10-25 | 2022-01-28 | 广东电网有限责任公司 | Distribution line loop closing verification method and device, electronic equipment and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947176A (en) * | 2018-01-10 | 2018-04-20 | 云南电网有限责任公司电力科学研究院 | A kind of closed loop network tune method for electrically and control system |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947176A (en) * | 2018-01-10 | 2018-04-20 | 云南电网有限责任公司电力科学研究院 | A kind of closed loop network tune method for electrically and control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585555A (en) * | 2020-05-22 | 2020-08-25 | 广东电网有限责任公司 | Anti-oscillation circuit and method and intelligent terminal |
| CN113985199A (en) * | 2021-10-25 | 2022-01-28 | 广东电网有限责任公司 | Distribution line loop closing verification method and device, electronic equipment and storage medium |
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