CN108957160A - Active power distribution network feed line automatization system test method - Google Patents
Active power distribution network feed line automatization system test method Download PDFInfo
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- CN108957160A CN108957160A CN201710355945.9A CN201710355945A CN108957160A CN 108957160 A CN108957160 A CN 108957160A CN 201710355945 A CN201710355945 A CN 201710355945A CN 108957160 A CN108957160 A CN 108957160A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/261—Functional testing by simulating additional hardware, e.g. fault simulation
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Abstract
The present invention provides a kind of active power distribution network feed line automatization system test method, is implemented by the test device for including PC machine, tester and connecting cable, comprising steps of 1. system modelling；2. generating test cases；3. test device accesses active power distribution network；4. closed loop fault simulation, wherein calculating short circuit current distribution using the simplification short-circuit current calculation method of meter and distributed generation resource；5. system testing；6. generating test report.The present invention is by establishing simulation model according to capacity of short circuit and impedance operator to distributed generation resource, the distributed generation resource for accessing power distribution network ideal voltage source and the impedance being connected with ideal voltage source are simulated, fault current distribution is calculated using the simplification short-circuit current calculation method of meter and distributed generation resource, short circuit current and fault-signal are provided, can be realized and validity test is carried out to the feed line automatization system of the active power distribution network accessed with distributed generation resource.
Description
Technical field
The present invention relates to the test methods of distribution feeder automation system, and in particular to a kind of distributed new access
Active power distribution network feed line automatization system test method.
Background technique
Feeder automation (FA) system is the important component of distribution automation system, and reliable and stable operation is
Ensure the key of distribution network failure self-healing ability.The major responsibility of FA system is detected and locates automatically when power distribution network breaks down
Failure is managed, fault location, isolation and non-failure point is completed and restores electricity.For the reliability service for ensureing FA system, need to FA system
The configuration and scene operation of system carry out comprehensive test, and FA system correctly can be carried out effectively at failure when guaranteeing that failure occurs
Reason.FA test macro needs the indices to FA system to assess, comprising: the accuracy of fault location；After fault recovery
Load balance rate；Anti- abnormal disturbances ability；Continuous fault processing capacity etc..By test it can be concluded that FA system configuration whether
Rationally, whether distribution terminal works normally, can system meet the requirement of processing various faults, corrects FA system according to test result
The configuration parameter of system guarantees that system is according to intended manner progress troubleshooting when true fault.
Currently, device that power distribution network FA system is tested and its with connection relationship such as Fig. 1 institute of power distribution network FA system
Show, wherein power source bus 1, on-load switch 2, interconnection switch 6 and block switch 7 are the primary equipment of tested FA system, are surveyed
Trial assembly, which is set, accordingly generates test electricity by the PC machine 3 of built-in simulation testing software, the simulated fault information command generated according to PC machine
Gas signal and the cable 5 for being sent to the tester 4 of FA system and simulating and testing instrument 4 being connected with tested power distribution network FA system
Composition when test, simulates FA system failure scene by the simulation testing software built in PC machine 3, and by the fault message of emulation
It is sent to tester 4 by specification, tester 4 accordingly generates detecting electric signal and accesses FA system by cable 5, with test
The troubleshooting capability of power distribution network FA system.Current FA measuring technology is typically based on single supply open loop operation condition, passes through
The troubleshooting capability of following methods test FA system: over current fault (power source bus occurs for 1. analogue loop power circuit outlet
1, break down between on-load switch 2)；2. between analog switch, power distribution station internal bus occur over current fault (on-load switch 2,
Block switch 7 or interconnection switch 6 break down between block switch 7)；3. (interconnection switch under dry run mode situation of change
Change in location) over current fault occurs (position of interconnection switch 6 changes)；Occurred twice in succession in different location 4. simulating
Flow failure；Over current fault the case where (interconnection switch 6, block switch 7 is all point) occurs under inspecting state 5. simulating；6. simulation is set
Over current fault occurs when standby abnormal (on-load switch 2, interconnection switch 6, block switch 7 have abnormal signal).
In recent years, distributed energy largely accesses power distribution network, so that power distribution network is become by traditional single supply major network by dividing
The active looped network of the cloth energy and major network composition.Distributed energy power supply intermittence the features such as make distributed energy online and
Distribution system operating condition changes when offline, and the FA system for the micro-capacitance sensor that test drives comprising major network and distributed energy needs
Consider the distribution of trend and closed loop calculation of short-circuit current when more power supply operation with closed ring.FA system as shown in Figure 1 common at present
Test device, fault simulation use load distribution algorithm, search for load toward source from branch line and add up, obtain each node
Failure upstream node is injected fault current, the operating condition ratio of this method fault simulation when line fault by the electric current of injection simultaneously
It is more single, the fault characteristic of open loop operation can only be substantially simulated, event when distributed generation resource operation with closed ring cannot be effectively met
Barrier emulation, thus, new test method is studied to meet the active power distribution network FA system testing demand of distributed energy access, is
A technical problem urgently to be resolved.
Summary of the invention
The purpose of the present invention is: the problems of the prior art are directed to, a kind of active power distribution network feed line automatization system is provided
Test method, to meet to the feed line automatization system progress validity test of the active power distribution network accessed with distributed generation resource
Demand.
The technical scheme is that active power distribution network feed line automatization system test method of the invention, is filled by test
Implementation is set, above-mentioned test device includes PC machine, tester and connecting cable；PC machine and tester are logical by the specification of setting
Letter；Above-mentioned PC machine 3 include host, for parameter and order input input equipment and for providing the display of operation interface
Device；It is characterized by:
The host of above-mentioned PC machine is built-in with including modeling unit, case generation unit, fault simulation unit, communication module, survey
Try report generation unit, model database, case database and simulation data base emulation test system；Test method include with
Lower step:
1. system modelling:
By the input equipment of PC machine, the relevant parameter of the affiliated active power distribution network of feed line automatization system to be measured is inputted, using building
Form unit models tested active power distribution network, including establishing basic model to switch, load, the bus in active power distribution network；
To distributed generation resource according to capacity of short circuit and impedance operator, using the connection alternative of an ideal voltage source and an impedance
Establish simulation model；Network topology model is established to active power distribution network, and establishes specification channel pattern；Model built is included into mould
Type database；
2. generating test cases:
Various types failure is set between the various device nodes of the active power distribution network belonging to tested FA system, 1. based on step
The model database of generation, is cooperated using operation interface, and the input equipment input by PC machine includes setting phase fault
With ground fault, setting abnormal obliteration etc. signal faults, setting fault type and failure triggered time, the class that short trouble is arranged
Type and case customization or lively formation condition and rule including the separate and failure time limit；It is raw by the case built in PC machine 3
The survey for generating and being executed including the information such as condition, time, fault type comprising failure is customized at automatic cell generation or manual editing
Case is tried, and all test cases are included into case database；Test cases is presented with tabular form in operation interface；
3. test device accesses active power distribution network:
PC machine 3 is electrically connected according to the regulation of setting with tester；Tester 4 is passed through into connecting cable 5 and active power distribution network electricity
Connection；
4. closed loop fault simulation:
It in the test cases listed by operation interface, selectes and needs currently performed test cases, fault simulation unit is from case number of cases
Carry out fault simulation calculating according to the relevant information and parameter of calling selected case in library, provide active power distribution network accordingly emulate it is short
Road electric current and fault-signal, the communication module through PC machine are sent to tester；The calculated result of fault simulation unit is included into simultaneously
Simulation data base；Wherein, fault simulation unit calculates short circuit using the simplification short-circuit current calculation method of meter and distributed generation resource
Current distribution: the distributed generation resource for accessing power distribution network is simulated with the connection of an ideal voltage source and an impedance；It will be short
The active power distribution network of road failure is divided into the superposition of normal condition and malfunction, successively calculate short circuit current normal component and
Fault component obtains the current distribution of route when short circuit after superposition, to simulate the short circuit fault of power distribution network feelings with distributed generation resource
Condition；
5. system testing:
Tester receives the active power distribution network short circuit current and fault simulation signal that PC machine is sent according to the specification of setting, generates phase
The detecting electric signal answered simultaneously inputs active power distribution network by connecting cable, to the troubleshooting energy of the FA system of active power distribution network
Power is tested；Pass through the real-time back production active power distribution network real time data of tester simultaneously and is uploaded to the fault simulation unit of PC machine
And it is included into simulation data base；Operation interface real-time display test data；
6. generating test report:
After being completed, the test report generation unit of PC machine generates test report according to testing setup and test result, provides
Tested active power distribution network FA system includes fault location accuracy, fault recovery rate, anti-abnormal disturbances ability, continuous fault processing
Corresponding assessment result including indexes of capability evaluation.
Further embodiment is: the simplification of above-mentioned step meter and distributed generation resource that 4. middle fault simulation unit uses is short
Road current calculation method, comprising the following specific steps
The first step forms node admittance matrix Y according to current active power distribution network parameter；
Second step carries out Load flow calculation and obtains short circuit current normal component；
Third step searches for distributed power access point；Again by the access point of current distributed generation resource and its connection impedance value, update
Node admittance matrix Y；
4th step decomposes node admittance matrix Y, calculate node impedance matrix Z；
5th step determines short-circuit impedance according to fault point, calculates short circuit current fault component；
6th step, is superimposed fault component and normal component obtains the calculation of short-circuit current result for needing to emulate.
The present invention has the effect of positive: active power distribution network feed line automatization system test method of the invention passes through
Simulation model is established according to capacity of short circuit and impedance operator to distributed generation resource, the distributed generation resource for accessing power distribution network is ideal
Voltage source and the impedance being connected with ideal voltage source are simulated, and fault simulation unit is short using the simplification of meter and distributed generation resource
Road current calculation method calculates fault current distribution；The network of short trouble is divided into the superposition of normal condition and malfunction,
Normal component and fault component are successively calculated, the current distribution of route when short circuit is obtained after superposition, to simulate band distributed generation resource
Short circuit fault of power distribution network situation, provide short circuit current and fault-signal, can be realized has to what is accessed with distributed generation resource
The feed line automatization system of source power distribution network carries out validity test.
Detailed description of the invention
Fig. 1 is existing FA opening machine system test device and single supply power distribution network connection schematic diagram；
Fig. 2 is FA opening machine system test device of the present invention and active power distribution network connection schematic diagram；
Fig. 3 is a kind of structural schematic diagram of PC machine in Fig. 2；
Fig. 4 is that the present invention carries out fault current simulation analysis schematic diagram to active power distribution network；
Fig. 5 is the calculation of short-circuit current flow chart that the present invention uses.
Appended drawing reference in above-mentioned attached drawing is as follows:
Power source bus 1, on-load switch 2, PC machine 3, tester 4 connect electric wire 5, interconnection switch 6, block switch 7, distributed energy
Source 8, on-load switch 9.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
(embodiment 1)
See Fig. 2, the active power distribution network feed line automatization system test method of the present embodiment is implemented, test device by test device
It is made of PC machine 3, tester 4 and connecting cable 5；The specification communication that PC machine 3 and tester 4 pass through setting；Tester 4 passes through company
Cable 5 is connect to be electrically connected with active power distribution network.
The connection relationship of active power distribution network FA opening machine system test device and active power distribution network is as shown in Figure 2, wherein power source bus
1, on-load switch 2, interconnection switch 6 and block switch 7 are the primary equipment of tested FA system, and the access of distributed generation resource 8 is matched
Power grid constitutes active power distribution network；Simulation testing software built in the PC machine 3 of test device, when test, the emulation testing built in PC machine 3
Software analogue active distribution network failure scene, and tester 4,4 phase of tester are sent by specification by the fault message of emulation
Detecting electric signal should be generated and active power distribution network is accessed by connecting cable 5, the FA system failure of active power distribution network is handled
Ability is tested.
See Fig. 3, PC machine 3 includes host, for the input equipment (such as keyboard) of parameter and order input and for providing behaviour
Make the display at interface；The host of PC machine 3 is built-in with including modeling unit, case generation unit, fault simulation unit, communication
The emulation testing system of the functional modules such as module, test report generation unit, model database, case database and simulation data base
System；PC machine 3 is communicated with tester 4 by the specification set by the communication module of its host.
The active power distribution network feed line automatization system test method of the present embodiment, comprising the following steps:
1. system modelling: by the input equipment of PC machine, inputting the correlation of the affiliated active power distribution network of feed line automatization system to be measured
Parameter models tested active power distribution network using the modeling unit built in PC machine host, including builds to switch, load, bus
Vertical basic model；To distributed generation resource according to capacity of short circuit and impedance operator, using an ideal voltage source and impedance
Connection type establishes simulation model；The network topology model and specification channel pattern of active power distribution network are established simultaneously；Model built
It is included into model database；Active power distribution network structure and device parameter are subjected to simulation process by system modelling.
2. generating test cases:
For active power distribution network belonging to tested FA system, various types are set between the various device nodes of active power distribution network
Failure is cooperated based on 1. model database that step generates using operation interface, and it is fixed to input case by the input equipment of PC machine
System or the condition and rule vividly generated；The condition that the case of input generates include: setting phase fault and ground fault,
The signal faults such as abnormal obliteration, setting fault type and failure triggered time are set, the type of short trouble is set and separate
With the failure time limit etc.；It is automatically generated by the case generation unit built in PC machine 3 or manual editing customizes to generate and hold comprising failure
Test cases including the information such as row condition, time, fault type, and all test cases are included into case database.Test
Case is presented in operation interface in the form of a list, selects to execute for user.
3. test device accesses active power distribution network:
Referring to fig. 2, PC machine 3 is electrically connected according to the regulation of setting with tester；By tester 4 by connecting cable 5 with it is active
Power distribution network electrical connection.
4. closed loop fault simulation:
User passes through the input equipment of PC machine 3, in operation interface in the test cases of list, selectes and needs currently performed survey
Case is tried, fault simulation unit calls the relevant information of selected case and parameter to carry out fault simulation meter from case database
It calculates, provides the short circuit current and fault-signal that active power distribution network accordingly emulates, the communication module through PC machine 3 is sent to tester；
The calculated result of fault simulation unit is included into simulation data base simultaneously.
Referring to fig. 4, the analysis of the fault current method in this step, when to access distributed generation resource for example: set in Fig. 4
Short trouble occurs at fault point 1, power source bus 1 and distributed generation resource 8 all inject short circuit current toward fault point 1 at this time；Load
The short circuit current size of switch 2 depends on the capacity of short circuit of power source bus 1；The short circuit current of block switch 7 depends on distribution
The capacity of short circuit of power supply 8, short circuit current direction are 1 → 2,8 → 7；When short trouble occurring at fault point 2,2 He of on-load switch
The short circuit current that block switch 7 flows through is identical, the capacity of short circuit depending on bus power supply 1；And the short circuit electricity that on-load switch 9 flows through
Stream is the sum of the short circuit current of power source bus 1 and distributed generation resource 8, and short circuit current direction is 1 → 2 → 7 → 9,8 → 9.
Referring to Fig. 5, in this step, fault simulation unit is using meter and the simplification short-circuit current calculation method of distributed generation resource
Calculate fault current distribution；According to distributed generation resource to the difference of short circuit current injection capacity, the distributed generation resource of different characteristics
Equivalent impedance size it is also different, the company of distributed generation resource one ideal voltage source and an impedance of power distribution network will be accessed
Fetch simulation；Then the network of short trouble is divided into the superposition of normal condition and malfunction, successively calculate short circuit current
Normal component and fault component obtain the current distribution of route when short circuit after superposition, to simulate the power distribution network with distributed generation resource
Short circuit fault condition.The simplification short-circuit current calculation method of meter and distributed generation resource comprises the concrete steps that:
The first step forms node admittance matrix Y according to current active power distribution network parameter；
Second step carries out Load flow calculation and obtains short circuit current normal component；
Third step searches for distributed power access point；Again by the access point of current distributed generation resource and its connection impedance value, update
Node admittance matrix Y；
4th step decomposes node admittance matrix Y, calculate node impedance matrix Z；
5th step determines short-circuit impedance according to fault point, calculates short circuit current fault component；
6th step, is superimposed fault component and normal component obtains needing the calculated result of the short circuit current emulated.
5. system testing:
Tester 4 receives the active power distribution network short circuit current and fault simulation signal that PC machine 3 is sent according to the specification of setting, generates
Corresponding detecting electric signal simultaneously inputs active power distribution network, the troubleshooting to active power distribution network FA system by connecting cable 5
Ability is tested, and is uploaded to the fault simulation of PC machine 3 by the real-time back production active power distribution network real time data of tester simultaneously
Unit is simultaneously included into simulation data base；Operation interface real-time display test data.
6. generating test report:
After being completed, the test report generation unit of PC machine 3 generates test report according to testing setup and test result, provides
Tested active power distribution network FA system include fault location accuracy, fault recovery rate, anti-abnormal disturbances ability, at continuous fault
Manage the corresponding assessment result including indexes of capability evaluation.
Above embodiments are the explanations to a specific embodiment of the invention, rather than limitation of the present invention, related technology
The technical staff in field without departing from the spirit and scope of the present invention, can also make various transformation and variation and obtain
To corresponding equivalent technical solution, therefore all equivalent technical solutions should be included into patent protection model of the invention
It encloses.
Claims (2)
1. a kind of active power distribution network feed line automatization system test method, is implemented by test device, the test device includes
PC machine, tester and connecting cable；The specification communication that PC machine and tester pass through setting；The PC machine 3 includes host, is used for
Parameter is with the input equipment of order input and for providing the display of operation interface；It is characterized by:
The host of the PC machine is built-in with including modeling unit, case generation unit, fault simulation unit, communication module, survey
Try report generation unit, model database, case database and simulation data base emulation test system；Test method include with
Lower step:
1. system modelling:
By the input equipment of PC machine, the relevant parameter of the affiliated active power distribution network of feed line automatization system to be measured is inputted, using building
Form unit models tested active power distribution network, including establishing basic model to switch, load, the bus in active power distribution network；
To distributed generation resource according to capacity of short circuit and impedance operator, using the connection alternative of an ideal voltage source and an impedance
Establish simulation model；Network topology model is established to active power distribution network, and establishes specification channel pattern；Model built is included into mould
Type database；
2. generating test cases:
Various types failure is set between the various device nodes of the active power distribution network belonging to tested FA system, 1. based on step
The model database of generation, is cooperated using operation interface, and the input equipment input by PC machine includes setting phase fault
With ground fault, setting abnormal obliteration etc. signal faults, setting fault type and failure triggered time, the class that short trouble is arranged
Type and case customization or lively formation condition and rule including the separate and failure time limit；It is raw by the case built in PC machine 3
The survey for generating and being executed including the information such as condition, time, fault type comprising failure is customized at automatic cell generation or manual editing
Case is tried, and all test cases are included into case database；Test cases is presented with tabular form in operation interface；
3. test device accesses active power distribution network:
PC machine 3 is electrically connected according to the regulation of setting with tester；Tester 4 is passed through into connecting cable 5 and active power distribution network electricity
Connection；
4. closed loop fault simulation:
It in the test cases listed by operation interface, selectes and needs currently performed test cases, fault simulation unit is from case number of cases
Carry out fault simulation calculating according to the relevant information and parameter of calling selected case in library, provide active power distribution network accordingly emulate it is short
Road electric current and fault-signal, the communication module through PC machine are sent to tester；The calculated result of fault simulation unit is included into simultaneously
Simulation data base；Wherein, fault simulation unit calculates short circuit using the simplification short-circuit current calculation method of meter and distributed generation resource
Current distribution: the distributed generation resource for accessing power distribution network is simulated with the connection of an ideal voltage source and an impedance；It will be short
The active power distribution network of road failure is divided into the superposition of normal condition and malfunction, successively calculate short circuit current normal component and
Fault component obtains the current distribution of route when short circuit after superposition, to simulate the short circuit fault of power distribution network feelings with distributed generation resource
Condition；
5. system testing:
Tester receives the active power distribution network short circuit current and fault simulation signal that PC machine is sent according to the specification of setting, generates phase
The detecting electric signal answered simultaneously inputs active power distribution network by connecting cable, to the troubleshooting energy of the FA system of active power distribution network
Power is tested；Pass through the real-time back production active power distribution network real time data of tester simultaneously and is uploaded to the fault simulation unit of PC machine
And it is included into simulation data base；Operation interface real-time display test data；
6. generating test report:
After being completed, the test report generation unit of PC machine generates test report according to testing setup and test result, provides
Tested active power distribution network FA system includes fault location accuracy, fault recovery rate, anti-abnormal disturbances ability, continuous fault processing
Corresponding assessment result including indexes of capability evaluation.
2. active power distribution network feed line automatization system test method according to claim 1, it is characterised in that: the step
Suddenly the simplification short-circuit current calculation method of 4. middle fault simulation unit uses meter and distributed generation resource, including walk in detail below
It is rapid:
The first step forms node admittance matrix Y according to current active power distribution network parameter；
Second step carries out Load flow calculation and obtains short circuit current normal component；
Third step searches for distributed power access point；Again by the access point of current distributed generation resource and its connection impedance value, update
Node admittance matrix Y；
4th step decomposes node admittance matrix Y, calculate node impedance matrix Z；
5th step determines short-circuit impedance according to fault point, calculates short circuit current fault component；
6th step, is superimposed fault component and normal component obtains the calculation of short-circuit current result for needing to emulate.
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| CN201710355945.9A CN108957160A (en) | 2017-05-19 | 2017-05-19 | Active power distribution network feed line automatization system test method |
| PCT/CN2017/116503 WO2018209945A1 (en) | 2017-05-19 | 2017-12-15 | Active power distribution network feeder automation system test method |
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| CN201710355945.9A CN108957160A (en) | 2017-05-19 | 2017-05-19 | Active power distribution network feed line automatization system test method |
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| CN110456223A (en) * | 2019-08-19 | 2019-11-15 | 西南交通大学 | A kind of power distribution network short circuit current measuring method containing distributed generation resource and electric car |
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| CN113295952A (en) * | 2021-05-24 | 2021-08-24 | 国网湖南省电力有限公司 | Intelligent distributed FA function test method, system and storage medium |
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| WO2018209945A1 (en) | 2018-11-22 |
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