CN103138390A - Power distribution network fault handling method based on self-recovering control - Google Patents
Power distribution network fault handling method based on self-recovering control Download PDFInfo
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Abstract
Disclosed is a power distribution network fault handling method based on self-recovering control. By a centralized and distributed coordination power distribution network fault self-recovering control method, signal processing and control strategy generation are adaptive, the control process is automatically completed without manual intervention, and behaviors of a relay protection device and a protection control device, a switch and an intelligent switch, and an automatic safety device are coordinated. The power distribution network fault handling method includes the steps of automatic detection of power distribution network faults, distributed self-recovering control and centralized self-recovering control.
Description
Technical field
The present invention relates to a kind of distribution network failure processing method, especially a kind of distribution network failure processing method based on self-healing control belongs to electric power and controls the technical applications of intersecting with artificial intelligence.
Background technology
Power distribution network is the intermediate link of contact electric load and large electrical network, is 10/6/20kV in the typical electric pressure of China, and the social production growth in the living standard requires power distribution network to have higher Supply Security and reliability.In power distribution network, branch and cascaded switch are many, operational mode flexible, the neutral point typical feature such as directly the access of distributed power supply with small capacity multiple spot, load and the distributed power source of ground connection, various energy resources form do not have very strong uncertainty, three-phase imbalance, failure rate is high, the measuring point coverage rate is low, these characteristics make the control of power distribution network very difficult, and its control level far lags behind power transmission network.
at present, only realize simple protection in power distribution network and controlled function, when breaking down in power distribution network, by being arranged on the protective relaying device excision fault of feeder line head end, on-load switch and line feed terminals unit are housed in some feeder lines, the electric current of each the timely acquisition stream overload in line feed terminals unit switch, the signal such as voltage and on off state, and by delivering to master station computer on communication network, the data that master station computer is uploaded according to the line feed terminals unit are judged the zone that fault occurs, then pass through remote control command, by the corresponding on-load switch breaking-closing operating of line feed terminals unit execution, faulty section is isolated, recover the power supply in fault-free zone, to dwindle power supply interrupted district.
When normal, running status to power distribution network is optimized, but the data of discontinuity surface are carried out static network reconstruct as the basis due to take one the time, do not consider the variation tendency that load, distributed power source are exerted oneself, can't obtain effect of optimization, and not bring into play the effect of distributed power source/microgrid/energy storage device.During the present power distribution network of realizing is controlled, lack from insulation defect to single phase ground fault occuring and developing into early warning and monitoring, the analysis of phase fault process and control.
Compare with traditional control model, self-healing control technology has autonomy, intelligent, adaptability, harmony, initiative and the excellent characteristic such as social, make controlled device possess very strong oneself's healing, self prevention and treatment, self-immunocompetence, therefore proposed one after another Scheme of Self-healing Control Frame in the fields such as communication, network, the application of self-healing control in electrical network at present only is directed to the above electrical network of 35kV.In order to prevent large-area power-cuts, after being interrupted power supply, power distribution network will have the ability of self-recovery power supply, distribution network planning and retrofit work are carried out in requirement, build up strong power distribution network, improve power supply capacity and reliability, guarantee power network safety operation, satisfy the requirement that socio-economic development and living standards of the people improve constantly.Therefore, the effective integration that need to study and realize primary system, electrical secondary system, communication network and the automation of power distribution network is controlled with coordination.
Design feature according to present urban distribution network, take full advantage of existing power network topology figure, with all electric equipments in electrical network, comprise that circuit, cable and various switch all include in distribution network failure automatic processing method of the present invention, each equipment, circuit, cable provide the plane coordinates position of GIS GIS-Geographic Information System, adopt computer automatic control system to analyze judgement to all circuits and electric equipment, provide rapidly result.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of distribution network failure processing method based on self-healing control; by gathering the data such as voltage, electric current, on off state; the current residing running status of judgement power distribution network; and use artificial intelligence approach to carry out decision-making; switch, protection control device, automatic safety device etc. are coordinated to control; realize that power distribution network is all the time to more health status transfer; improve power distribution network Supply Security, reliability, quality and economy, strengthen the target of emergency capability.
Technical scheme: the self-healing control that distribution network failure is processed is by the automatic Identification to state of electric distribution network; and carry out control decision according to physical condition; unified control appliance and the power distribution network centralized control master station computer such as intelligent switch, protection control device, automatic safety device coordinated form distribution and concentrated control, Partial controll and the overall control model of coordinating mutually of controlling.For this reason, complete definition of the present invention the running status of power distribution network and the relation between various state and corresponding control.
The present invention adopts the control model of concentrating with distributed coordination; the processing of signal and the generation of control strategy have adaptivity; automatically complete control procedure under prosthetic intervention condition; coordinate protective relaying device and the action behavior of protecting control device, switch and intelligent switch, automatic safety device; comprise electric network fault automatically detect, distribute self-healing control and three steps of concentrated self-healing control, concrete steps are as follows:
The first step: electric network fault detects automatically, includes all electric equipments in electrical network in automatic Sampling network, and Sampling network adopts the GIS GIS-Geographic Information System automatically;
second step: the device data in electrical network respectively with the GIS GIS-Geographic Information System in point, line, the face data are corresponding, the point, line, the equipment that face is corresponding stores respectively the point diagram layer in the GIS GIS-Geographic Information System into, the line chart layer, face figure layer, shaft tower is made as point device, the centre of every two point devices is line equipment, the fixing online equipment of point device two ends, with some point devices or line equipment as starting point, with the sense of current as benchmark, according to point-line-point-line-mode detect, according to total power supply source electric pressure, the upstream device of power supply source being carried out connectivity analysis detects, comprise the supply district analyzing and testing, listing operation analyzing and testing and switch operation analyzing and testing,
The 3rd step: after above-mentioned analyzing and testing is completed, carry out the analyzing and testing of new round next stage voltage, complete successively the analyzing and testing to each step voltage, in the testing process that each is taken turns, to not be set as fault dotted line equipment with this dotted line equipment that detects the voltage level load, with the separated detection of dotted line equipment of other dotted line equipment in network and epicycle detection voltage;
The 4th step: distribution self-healing control step:
voltage current transformer is respectively with the voltage of power distribution network, current transformation is light current or light signal, protection control device and protective relaying device receive the voltage after conversion, compare with the protection setting value after current signal, when surpassing the action launching value, trigger relay is with the switch separating brake, protect simultaneously control device to determine fault section according to voltage and current signal, single-phase earthing and insulation descending device, and trigger relay disconnects the switch that is connected with fault section, then search for and close a floodgate one and be connected with non-fault section and the other end has the switch of normal voltage signal, the backup auto-activating device of transformer station receives the voltage after conversion, compare with operating valve value after current signal and on off state, the trigger relay block switch that closes when satisfying operation condition, voltage after all conversion, current signal, single-phase earthing and insulation dropping signal, the action situation of protection control device and backup auto-activating device, the state of action front-rear switch sends master station computer with message mode to by RTU and power communication network,
The 5th step: concentrate the self-healing control step:
The main website front end processor is resolved reduction to signal after receiving message, and carry out filtering and process, after filter false information, signal is passed to the main website server, send to RTU to carry out corresponding control operation the main website server controls command signal of receiving by the power communication network simultaneously;
the main website server compares electric current and voltage and the normal voltage current value that receives, and carry out the network topology connectivity checks, if the electric current and voltage at load place is not in range of normal value, and when not being communicated with power supply, search is connected with this load place section and the other end has the switch of normal voltage signal, calculate the relatively margin of power of these switch connected normal power supply sections, obtain the margin of power greater than load and the minimum supply power mode of console switch, if there is no feasible supply power mode can recover the power supply of all loads sort according to the importance of load, to be the load that has a power failure greater than the margin of power and the low determination of power load of importance, if only have distributed power source in the power supply of load, generate the machine of cutting, the cutting load scheme, and organize the control signal of switch motion by the remote control message format, send to the main website front end processor,
when the main website server receives single-phase earthing or insulation dropping signal, single-phase earthing is set to be withdrawed from insulation decline section, the voltage that calculates under the various operational modes of power distribution network and Reactive Compensation Mode distributes, CURRENT DISTRIBUTION, and the critical voltage during load growth, compare with the normal voltage current value, filtration obtains the power distribution network operational mode that voltage and current does not all exceed normal range of operation, then the critical voltage under the critical voltage that will work as power distribution network under preload and same operational mode during load growth compares, select the power distribution network operational mode of margin of safety maximum, further draw current operational mode and change the switching manipulation that this operational mode need to be carried out into, the capacitor switching situation, and operating sequence, and by remote control message format organizational controls signal, send to the main website front end processor,
it is out of service that the main website server arranges respectively each equipment, the electric current and voltage that calculates power distribution network distributes, and compare with the normal voltage current value, if all do not exceed normal range of operation, historical load and distributed power source are exerted oneself and carry out continuation and process, draw respectively the variation tendency that load and distributed power source are exerted oneself, then in conjunction with the current voltage that receives, electric current, switch state signal calculates the network loss under the various operational modes of power distribution network, relatively, obtain the operational mode of loss minimization and change the required operation of carrying out of loss minimization operational mode into by current operational mode, further according to new operational mode, the variation tendency that load and distributed power source are exerted oneself, calculate reactive power flow and power factor, the change reactive power source is exerted oneself and is recomputated, until the reactive power flow of power distribution network reduces, power factor increases and greater than the power factor limit value, when reducing, network loss is defined as the running status of reactive-load compensation equipment, organize the switching manipulation command signal by the remote control message format at last, send to the main website front end processor,
The historical voltage and current signal that the main website server by utilizing receives, the prediction load data, prediction distribution formula power supply is exerted oneself and electric network composition is assessed power distribution network, power distribution before and after the comparison load variations under various operational modes and the situation of change of voltage, export the situation that current distribution net work structure, meritorious power supply or reactive power source can not satisfy load and change, and the strategy of adjusting distribution net work structure, meritorious power supply or reactive power source;
Wherein: generating the method for cutting machine, cutting load scheme is that interior frequency, voltage, the current signal of isolated island that the main website server by utilizing receives carries out power equilibrium calculation, the gross power that power supply can send in isolated island during less than total load the importance according to load sort, to be the load that has a power failure greater than power and the low determination of power load of importance, size is defined as stopping paying out unit with the immediate generator of power difference if generator output much larger than total load sort according to exerting oneself of generator, is exerted oneself; Progressively increase the load power in isolated island on isolated island internal power balance basis, calculate the critical voltage of isolated island under various power situations, current ruuning situation and critical voltage are compared, to controlling near capacitor, generator and the load at critical voltage place, make the Voltage Instability phenomenon does not occur in isolated island when having Voltage Instability trend.
Described supply district analysis is that to choose a certain equipment on map be starting point, obtain this equipment corresponding electrical equipment object in power network topology, take this object as starting point, the logical relation that flows to positive direction and point-line-point-line according to electrical network is searched the electric equipment object that all are connected.
Described listing operation analyzing and testing, to obtain current all list equipment and the corresponding type of listing of equipment from the list of listing, their current state is set, with the type that allows listing operation, by checking the sense of current of this equipment, obtain the electriferous state of equipment, do not allow to carry out direct listing operation for charged equipment, can only warn and list, charging equipment can not carry out listing operation and caution operation.
described switch operation analyzing and testing, the selected disconnecting link equipment that needs operation, obtain the state of current disconnecting link equipment, according to current state, the switch operation that can supply is provided, reset the disconnecting link folding condition, and reset the following all devices voltage direction of current voltage grade and this electric pressure, after direction setting is completed, again choose the corresponding electrical equipment object of disconnecting link equipment of current operation, be set to starting point, carry out connectivity analysis, search its all upstream device, the sense of current according to the upstream device that inquires, judge whether current device is in electriferous state.Described total power supply source comprises the transformer station that is connected with total power supply source.
For the disconnecting link equipment that is in off-state or the equipment of stoppage in transit, as not being with electric treatment, the upstream device of this equipment is also as not being with electric treatment.
In the testing process that each is taken turns, to not be set as fault dotted line equipment with this dotted line equipment that detects the voltage level load, the separated detection of dotted line equipment of other dotted line equipment in network and epicycle detection voltage is referred to when the electrical network detection analyzes these equipment, detect and stop, no longer include the upstream device of these equipment in analyst coverage, namely run into the analysis that obstacle stops this circuit.
Beneficial effect: this programme is applied to self-healing control technology the troubleshooting of power distribution network, adopts the self-healing control method of concentrating with distributed coordination can obtain following effect:
1) intelligent monitoring
This programme can solve the automatic test problems of electric network fault, includes all electric equipments in electrical network in automatic Sampling network, and Sampling network adopts the GIS GIS-Geographic Information System automatically.Shaft tower is made as point device, device data in electrical network is corresponding with the point, line, surface data in the GIS GIS-Geographic Information System respectively, comprise switch, disconnecting link, circuit breaker, transformer and as the various steel towers of physics shaft tower, cement tower all as corresponding to the point in generalized information system; Overhead wire, cable, various connecting line are corresponding to the line of generalized information system; Transformer station's building itself is corresponding to the face of generalized information system.
2) intelligent decision-making
This programme adopts the intelligent method that adapts with it to carry out decision-making according to network configuration and the operation characteristic of various devices and main website, power distribution network, makes the intellectuality of whole control decision and control procedure.
3) autonomy and the coordinating and unifying
In this programme, various devices have certain autonomy, independently control when not receiving the main website order, also can operate according to the control signal of main website simultaneously, various controls have certain autonomy, carry out decision-making and control under each comfortable corresponding trigger condition, and coordinated by overall control, guarantee the harmony between the power distribution network each several part.
4) adaptable
This programme can be controlled power distribution network in all cases, and is adaptable.In case of emergency guarantee the normal power supply of loading, preferentially important load is powered in the time of can not guaranteeing the power supply of all loads under existence conditions, can utilize the characteristics of isolated neutral to support the power distribution network continued power, improve the economy of power supply and to the adaptability of load when power distribution network can safe normal power supply as far as possible.
5) the Comprehensive Control effect is remarkable
Adopt this programme to control, can give full play to the effect of distributed power source/microgrid/energy storage device, dwindle power failure range, reduce user's frequency of power cut, shorten interruption duration, the optimized network operational mode reduces electric energy loss, improves the utilance of controller switching equipment.
Description of drawings
Fig. 1 is the frame structure schematic diagram of power distribution network Scheme of Self-healing Control Frame.
Fig. 2 is power distribution network self-healing control test circuit structure chart.
Embodiment
The power distribution network Scheme of Self-healing Control Frame is that residing running status current according to power distribution network controlled, and makes it reach a kind of more healthy running status, thereby guarantees safe, reliable, high-quality, the economical operation of power distribution network.
Concrete control procedure is as follows:
1) implementation process of distribution self-healing control: voltage current transformer is light current or light signal with voltage, the current transformation of power distribution network respectively, protection control device and protective relaying device compare with the protection setting value after receiving voltage after conversion, current signal, when to surpass the action launching value be 3A as enriching line current I section definite value, collect K103 switch place electric current is 5.7A trigger relay with the K103 separating brake to excise fault, the reclosing K103 switch of tripping that closes, the electric current that K103 switch place detected this moment still is 5.7A, reclosing is the K103 switch that just closed of tripping again, this time reclosing failure, the protection control device is determined fault section according to voltage and current signal, then single-phase earthing and insulation descending device, and trigger relay disconnects the switch be connected with fault section searched for and closed a floodgate one and be connected with non-fault section and the other end has the switch of normal voltage signal, as disconnection K111, K112, the K115 switch, K103 closes, the K113 switch, the backup auto-activating device of transformer station receives the voltage after conversion, after current signal and on off state with operating valve value relatively, satisfy operation condition such as branch road 10kVI section busbar voltage is 0.0kV, branch road 10kVII section busbar voltage is 10.37kV, the Backup Power Switch that the running status of branch road 10kV block switch K110 trigger relay when disconnecting closes this moment, i.e. K110, voltage after all conversion, current signal, single-phase earthing and insulation dropping signal, the action situation of protection control device and backup auto-activating device, the state of action front-rear switch sends master station computer with message mode to by RTU and power communication network,
2) concentrate the implementation process of self-healing control: the main website front end processor is resolved reduction to signal after receiving message, and carry out filtering and process, as to collect part of path L2 voltage be 1.2kV, be 0.0kV after processing, and after filter false information, signal passed to the main website server;
the main website server compares electric current and voltage and the normal voltage current value that receives, and carry out the network topology connectivity checks, if the electric current and voltage at load place is not in range of normal value, and be defined as the dead electricity load when not being communicated with power supply, be 0.0kV as part of path L2 voltage, less than normal voltage 9.5kV, and the connecting path of part of path L2 and power supply is cut off, determine that this section is the dead electricity load, search is connected with this load place section and the other end has switch such as the K113 of normal voltage signal, calculate the relatively margin of power of these switch connected normal power supply sections, obtain the margin of power greater than load and the minimum supply power mode of console switch, if there is no feasible supply power mode can recover the power supply of all loads sort according to the importance of load, to be the load that has a power failure greater than the margin of power and the low determination of power load of importance, thereby draw the scheme that restores electricity of the dead electricity load of non-fault, as the scheme that is connected to the load restoration power supply of part of path L2 is K112 switch separating brake, the K113 switch closes a floodgate, if be defined as the isolated island of powering when only having distributed power source in the power supply of load, as to only have DG1 be the load power supply of learning centre line, these loads and DG1 and each other connect to form one the power supply isolated island, generate the machine of cutting, the cutting load scheme, all load sums as the learning centre line are 5.2MW, greater than DG1 maximum output 3MW, active power in isolated island is uneven, through sequence, the load importance of part of path L4 is minimum, the cutting load scheme of output is the load of excision part of path L4, and disconnection K211 switch, the K212 switch closes, then organize the control signal of switch motion by the remote control message format, send to the main website front end processor,
when the main website server receives single-phase earthing or insulation dropping signal such as part of path L3 insulation decline, single-phase earthing and insulation decline section such as part of path L3 are set to be withdrawed from, the voltage that calculates under the various operational modes of power distribution network and Reactive Compensation Mode distributes, CURRENT DISTRIBUTION, and the critical voltage of load growth when high ew line total load is progressively increased to 20MW from 5.4MW by the step-length of 0.1MW, compare with the normal voltage current value, filtration obtains the power distribution network operational mode that voltage and current does not all exceed normal range of operation, then critical voltage such as Dongshan 10kVI section busbar voltage in the time of working as the critical voltage of power distribution network under preload such as Dongshan 10kVI section busbar voltage and be load growth under 10.07kV and same operational mode are 6.9kV, the normal range of operation of voltage and current such as 10kV busbar voltage are that 9.5～10.7kV compares, select the load of the power distribution network operational mode of margin of safety maximum such as part of path L2 and L3 by mesa 10kVI section bussed supply, and input capacitor C1, further draw current operational mode and change the switching manipulation that this operational mode need to be carried out into, the capacitor switching situation, and operating sequence, as K112 switch separating brake, the K113 switch closes a floodgate, the K212 switch closes a floodgate, K312 switch separating brake, and by remote control message format organizational controls signal, send to the main website front end processor,
it is out of service that the main website server arranges respectively each equipment, the electric current and voltage that calculates power distribution network distributes, and compare with the normal voltage current value, if all do not exceed normal range of operation, historical load and distributed power source are exerted oneself and carry out continuation and process, draw respectively the variation tendency that load and distributed power source are exerted oneself, then in conjunction with the current voltage that receives, electric current, switch state signal calculates the network loss under the various operational modes of power distribution network, relatively, obtain the operational mode of loss minimization and change the required operation of carrying out of loss minimization operational mode into by current operational mode, as the K113 switch that closes, disconnect the K312 switch, further according to new operational mode, the variation tendency that load and distributed power source are exerted oneself, calculate reactive power flow and power factor, the change reactive power source is exerted oneself and is recomputated, until the reactive power flow of power distribution network reduces, power factor increases and greater than the power factor limit value, when reducing, network loss is defined as the running status of reactive-load compensation equipment, as drop into capacitor C1, organize the switching manipulation command signal by the remote control message format at last, send to the main website front end processor,
the historical voltage and current signal that the main website server by utilizing receives, the prediction load data, prediction distribution formula power supply is exerted oneself and electric network composition is assessed power distribution network, power distribution before and after the comparison load variations under various operational modes and the situation of change of voltage, export current distribution net work structure, the situation that meritorious power supply or reactive power source can not satisfy load and change, as the load growth of Lijiang River line its voltage degradation after the 17MW, then list the adjustment distribution net work structure, the strategy of meritorious power supply or reactive power source, as add capacitor on the line of Lijiang River, and and the learning centre line between set up interconnection,
The main website front end processor sends to RTU to carry out corresponding control operation the main website server controls command signal of receiving by the power communication network.
Claims (7)
1. distribution network failure processing method based on self-healing control; it is characterized in that adopting the distribution network failure self-healing control method of concentrating with distributed coordination; the processing of signal and the generation of control strategy have adaptivity; automatically complete control procedure under prosthetic intervention condition; coordinate protective relaying device and the action behavior of protecting control device, switch and intelligent switch, automatic safety device; comprise electric network fault automatically detect, distribute self-healing control and three steps of concentrated self-healing control, concrete steps are as follows:
The first step: electric network fault detects automatically, it is characterized in that: include all electric equipments in electrical network in automatic Sampling network, Sampling network adopts the GIS GIS-Geographic Information System automatically;
second step: the device data in electrical network respectively with the GIS GIS-Geographic Information System in point, line, the face data are corresponding, the point, line, the equipment that face is corresponding stores respectively the point diagram layer in the GIS GIS-Geographic Information System into, the line chart layer, face figure layer, shaft tower is made as point device, the centre of every two point devices is line equipment, the fixing online equipment of point device two ends, with some point devices or line equipment as starting point, with the sense of current as benchmark, according to point-line-point-line-mode detect, according to total power supply source electric pressure, the upstream device of power supply source being carried out connectivity analysis detects, comprise the supply district analyzing and testing, listing operation analyzing and testing and switch operation analyzing and testing,
The 3rd step: after above-mentioned analyzing and testing is completed, carry out the analyzing and testing of new round next stage voltage, complete successively the analyzing and testing to each step voltage, in the testing process that each is taken turns, to not be set as fault dotted line equipment with this dotted line equipment that detects the voltage level load, with the separated detection of dotted line equipment of other dotted line equipment in network and epicycle detection voltage;
The 4th step: distribution self-healing control step:
voltage current transformer is respectively with the voltage of power distribution network, current transformation is light current or light signal, protection control device and protective relaying device receive the voltage after conversion, compare with the protection setting value after current signal, when surpassing the action launching value, trigger relay is with the switch separating brake, protect simultaneously control device to determine fault section according to voltage and current signal, single-phase earthing and insulation descending device, and trigger relay disconnects the switch that is connected with fault section, then search for and close a floodgate one and be connected with non-fault section and the other end has the switch of normal voltage signal, the backup auto-activating device of transformer station receives the voltage after conversion, compare with operating valve value after current signal and on off state, the trigger relay block switch that closes when satisfying operation condition, voltage after all conversion, current signal, single-phase earthing and insulation dropping signal, the action situation of protection control device and backup auto-activating device, the state of action front-rear switch sends master station computer with message mode to by RTU and power communication network,
The 5th step: concentrate the self-healing control step:
The main website front end processor is resolved reduction to signal after receiving message, and carry out filtering and process, after filter false information, signal is passed to the main website server, send to RTU to carry out corresponding control operation the main website server controls command signal of receiving by the power communication network simultaneously;
the main website server compares electric current and voltage and the normal voltage current value that receives, and carry out the network topology connectivity checks, if the electric current and voltage at load place is not in range of normal value, and when not being communicated with power supply, search is connected with this load place section and the other end has the switch of normal voltage signal, calculate the relatively margin of power of these switch connected normal power supply sections, obtain the margin of power greater than load and the minimum supply power mode of console switch, if there is no feasible supply power mode can recover the power supply of all loads sort according to the importance of load, to be the load that has a power failure greater than the margin of power and the low determination of power load of importance, if only have distributed power source in the power supply of load, generate the machine of cutting, the cutting load scheme, and organize the control signal of switch motion by the remote control message format, send to the main website front end processor,
when the main website server receives single-phase earthing or insulation dropping signal, single-phase earthing is set to be withdrawed from insulation decline section, the voltage that calculates under the various operational modes of power distribution network and Reactive Compensation Mode distributes, CURRENT DISTRIBUTION, and the critical voltage during load growth, compare with the normal voltage current value, filtration obtains the power distribution network operational mode that voltage and current does not all exceed normal range of operation, then the critical voltage under the critical voltage that will work as power distribution network under preload and same operational mode during load growth compares, select the power distribution network operational mode of margin of safety maximum, further draw current operational mode and change the switching manipulation that this operational mode need to be carried out into, the capacitor switching situation, and operating sequence, and by remote control message format organizational controls signal, send to the main website front end processor,
it is out of service that the main website server arranges respectively each equipment, the electric current and voltage that calculates power distribution network distributes, and compare with the normal voltage current value, if all do not exceed normal range of operation, historical load and distributed power source are exerted oneself and carry out continuation and process, draw respectively the variation tendency that load and distributed power source are exerted oneself, then in conjunction with the current voltage that receives, electric current, switch state signal calculates the network loss under the various operational modes of power distribution network, relatively, obtain the operational mode of loss minimization and change the required operation of carrying out of loss minimization operational mode into by current operational mode, further according to new operational mode, the variation tendency that load and distributed power source are exerted oneself, calculate reactive power flow and power factor, the change reactive power source is exerted oneself and is recomputated, until the reactive power flow of power distribution network reduces, power factor increases and greater than the power factor limit value, when reducing, network loss is defined as the running status of reactive-load compensation equipment, organize the switching manipulation command signal by the remote control message format at last, send to the main website front end processor,
The historical voltage and current signal that the main website server by utilizing receives, the prediction load data, prediction distribution formula power supply is exerted oneself and electric network composition is assessed power distribution network, power distribution before and after the comparison load variations under various operational modes and the situation of change of voltage, export the situation that current distribution net work structure, meritorious power supply or reactive power source can not satisfy load and change, and the strategy of adjusting distribution net work structure, meritorious power supply or reactive power source.
2. the distribution network failure processing method based on self-healing control according to claim 1, it is characterized in that described generation cuts machine, the method of cutting load scheme is the interior frequency of isolated island that the main website server by utilizing receives, voltage, current signal carries out power equilibrium calculation, the gross power that power supply can send in isolated island during less than total load the importance according to load sort, to be the load that has a power failure greater than power and the low determination of power load of importance, if generator output is much larger than total load sort according to exerting oneself of generator, the size of exerting oneself is defined as stopping paying out unit with the immediate generator of power difference, progressively increase the load power in isolated island on isolated island internal power balance basis, calculate the critical voltage of isolated island under various power situations, current ruuning situation and critical voltage are compared, to controlling near capacitor, generator and the load at critical voltage place, make the Voltage Instability phenomenon does not occur in isolated island when having Voltage Instability trend.
3. the distribution network failure processing method based on self-healing control according to claim 1, it is characterized in that: described with shaft tower as point device, refer to the logic shaft tower, device data in electrical network is corresponding with the point, line, surface data in the GIS GIS-Geographic Information System respectively, comprise switch, disconnecting link, circuit breaker, transformer and as the various steel towers of physics shaft tower, cement tower all as corresponding to the point in generalized information system; Overhead wire, cable, various connecting line are corresponding to the line of generalized information system; Transformer station's building itself is corresponding to the face of generalized information system.
4. according to claim 1 or 3 described distribution network failure processing methods based on self-healing control is characterized in that:
Described supply district analysis is that to choose a certain equipment on map be starting point, obtain this equipment corresponding electrical equipment object in power network topology, take this object as starting point, the logical relation that flows to positive direction and point-line-point-line according to electrical network is searched the electric equipment object that all are connected.
5. according to claim 1 or 3 described distribution network failure processing methods based on self-healing control is characterized in that:
Described listing operation analyzing and testing, to obtain current all list equipment and the corresponding type of listing of equipment from the list of listing, their current state is set, with the type that allows listing operation, by checking the sense of current of this equipment, obtain the electriferous state of equipment, do not allow to carry out direct listing operation for charged equipment, can only warn and list, charging equipment can not carry out listing operation and caution operation.
6. according to claim 1 or 3 described distribution network failure processing methods based on self-healing control is characterized in that:
described switch operation analyzing and testing, the selected disconnecting link equipment that needs operation, obtain the state of current disconnecting link equipment, according to current state, the switch operation that can supply is provided, reset the disconnecting link folding condition, and reset the following all devices voltage direction of current voltage grade and this electric pressure, after direction setting is completed, again choose the corresponding electrical equipment object of disconnecting link equipment of current operation, be set to starting point, carry out connectivity analysis, search its all upstream device, the sense of current according to the upstream device that inquires, judge whether current device is in electriferous state, described total power supply source comprises the transformer station that is connected with total power supply source,
For the disconnecting link equipment that is in off-state or the equipment of stoppage in transit, as not being with electric treatment, the upstream device of this equipment is also as not being with electric treatment.
7. according to claim 1 or 3 described distribution network failure processing methods based on self-healing control is characterized in that:
In the testing process that each is taken turns, to not be set as fault dotted line equipment with this dotted line equipment that detects the voltage level load, the separated detection of dotted line equipment of other dotted line equipment in network and epicycle detection voltage is referred to when the electrical network detection analyzes these equipment, detect and stop, no longer include the upstream device of these equipment in analyst coverage, namely run into the analysis that obstacle stops this circuit.
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