CN113394779A - Virtual power distribution terminal model based on in-place FA logic - Google Patents
Virtual power distribution terminal model based on in-place FA logic Download PDFInfo
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- CN113394779A CN113394779A CN202110820282.XA CN202110820282A CN113394779A CN 113394779 A CN113394779 A CN 113394779A CN 202110820282 A CN202110820282 A CN 202110820282A CN 113394779 A CN113394779 A CN 113394779A
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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
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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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
- H02J13/00002—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 monitoring
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a virtual power distribution terminal model based on in-place FA logic, which comprises a test workstation, a program-controlled tester and a model parameter setting module; the test workstation is connected with the program-controlled tester through a network; the testing workstation is internally provided with a model parameter setting module, a local topology building module and a simulation module, wherein the model parameter setting module is used for virtual power distribution terminal modeling and parameter setting, the local topology building module is used for building an on-site power distribution network operation topology, and the simulation module is used for electric quantity simulation under a normal state and a fault state of a power distribution network and on-site FA control logic of each switch node in a simulation power distribution network model; when the ground type FA logic of the power distribution terminal is tested, the power distribution terminal is connected with the program-controlled tester through the electric cable, and the program-controlled tester receives the electric data of the simulation module and outputs the electric data corresponding to the switch node.
Description
Technical Field
The invention relates to a virtual power distribution terminal model based on in-place FA logic, and belongs to the technical field of power distribution equipment.
Background
Feeder Automation (FA for short) is an important component of distribution Automation, and means that after a power distribution network fault occurs, a system performs fault diagnosis, fault positioning, automatic isolation and recovery of power supply in a sound area according to data monitored by a distribution Automation terminal, so that the purposes of shortening fault power failure time and reducing fault power failure range are achieved; however, for a long time, the feeder automation fault processing function lacks an effective test means, the effectiveness of the feeder automation fault processing function can be verified only when the fault occurs, the functional defects cannot be detected and debugged in time, and great influence is generated on the practical process of the distribution automation system; therefore, the level and quality of the feeder automation test performed on the power distribution network directly determine the practical level of power distribution automation and the power supply reliability of the power distribution network to some extent.
The in-place FA is a mode of feeder automation.
At present, the traditional test method for the local FA is mainly to inject the voltage and the current of the fault characteristic quantity into a power distribution terminal through a relay protection tester, compile a characteristic quantity state sequence according to functional logic, and use the tester to output the state sequence to verify whether the logic meets the requirements, and the test method has the following defects:
(1) in the power distribution network, different control logics are required to be borne by the local FA system at different positions of the power distribution terminal, so that the test system needs to switch multiple roles (an outlet circuit breaker, a tie switch and a section switch), and the test system selects different control logics for testing aiming at different roles.
(2) Whether the local FA system is suitable or not depends on internal control logic programs and fixed value parameters of all terminals, the parameters need to be matched with upstream and downstream power distribution terminals, whether the configuration is reasonable or not determines whether the devices can be matched with each other to complete local FA logic control of the whole network, if a system-level FA function test is to be completed, a tested unit needs to carry a plurality of sets of local devices, a plurality of testers need to be configured correspondingly by the testing unit, wiring preparation before the test and the building of a test environment are troublesome, the cost is high, the occupied area is large, and the test environment needs to be built again for switching different test networks.
Disclosure of Invention
The invention provides a virtual power distribution terminal model based on in-place FA logic, and aims to solve the problems that a single in-place power distribution terminal cannot test the FA logic and the in-place FA logic process is complicated in field test.
The technical solution of the invention is as follows: a virtual power distribution terminal model based on local FA logic comprises a test workstation 1, a program-controlled tester 4 and a model parameter setting module 2; the test workstation 1 is connected with the program-controlled tester 4 through a network; the testing workstation 1 is internally provided with a model parameter setting module 2, a local topology building module 6 and a simulation module 5, wherein the model parameter setting module 2 is used for modeling and parameter setting of a virtual power distribution terminal 8, the local topology building module 6 is used for building an in-situ power distribution network operation topology, and the simulation module 5 is used for electric quantity simulation under a normal state and a fault state of a power distribution network and in-situ FA control logic of each switching node in a simulation power distribution network model; when the ground type FA logic of the power distribution terminal is tested, the power distribution terminal 3 is connected with the program-controlled tester 4 through an electric cable, and the program-controlled tester 4 receives the electric data of the simulation module 5 and outputs the electric data corresponding to the switch node.
Further, the local topology building module 6 includes a transformer, a bus, a line, a switch, and a load in the power distribution network, and sets a connection relationship and an equipment attribute of each equipment in the power distribution network to be tested through the local topology building module 6.
Further, the model parameter setting module 2 is used for setting parameters of the equipment in the distribution network to be tested, including local FA logic type setting, switch node role setting and control function parameter setting; the FA logic type comprises a voltage time type, a voltage current type and a self-adaptive comprehensive type; the control function parameter setting comprises setting switch attributes, setting switch input protection constant values, setting switch input FA constant values and setting key control words.
Further, the switch node roles set by the switch node role setting include a substation local side outlet circuit breaker, a trunk line section switch, a branch line branch switch, a tie switch and an opposite side substation outlet circuit breaker.
Further, the switch input protection fixed value comprises a current limit value, delay time and reclosing times, and the current limit value comprises current limit values corresponding to an overcurrent I section, an overcurrent II section and an overcurrent III section respectively; the delay time comprises time corresponding to an overcurrent I section, an overcurrent II section and an overcurrent III section respectively; the reclosing times include 0 time, 1 time and 2 times.
Further, the fixed value of the switch input FA comprises short delay closing time X of an incoming call, long delay closing time XC of the incoming call, closing holding time Y, voltage loss delay opening time Z and contact switch delay closing time XL.
Further, the key control words comprise local protection throwing and withdrawing, local FA throwing, subsection or branch throwing and withdrawing and contact throwing and withdrawing related control words.
Further, the simulation module 5 includes an electrical data simulation module for simulating electrical quantities in normal operation and fault operation states of the power distribution network model and an on-site FA control logic simulation module for simulating on-site FA control logic of each switching node in the power distribution network model.
Further, the electrical quantities in the fault operation state include fault currents and fault voltages flowing through the feeder line, the segment and the branch under the condition of a three-phase or two-phase or single-phase ground fault.
Furthermore, the local FA control logic simulation module includes a plurality of FA control logic sub-simulation modules, and the FA control logic sub-simulation modules are configured at the switch node and simulate the corresponding switch node.
Further, the local FA control logic simulation module includes a voltage-time FA control logic, a voltage-current FA control logic, and a self-adaptive comprehensive FA control logic, and each FA control logic configured by the local FA control logic simulation module is specifically as follows:
(1) the voltage time type FA control logic is specifically as follows: the method is realized by matching with secondary closing of an outlet circuit breaker through the working characteristics of 'non-voltage opening and incoming call delay closing' of a switch, wherein primary closing is used for isolating a fault section, and secondary closing is used for recovering power supply of a non-fault section;
(2) the self-adaptive comprehensive FA control logic is specifically as follows: the fault location and isolation self-adaption of the power distribution network frame are realized by combining a short circuit/grounding fault detection technology and a fault path priority processing control strategy in a non-voltage switching-off and incoming call delay switching-on mode and matching with secondary switching-on of an outlet breaker, and the power supply of a non-fault section is recovered by primary switching-on and isolation of a fault section;
(3) the voltage current type FA control logic is specifically as follows: the voltage loss times and the flowing times of fault current of the switch are detected by a power distribution terminal, and the judgment and the isolation of a fault interval are realized by combining the reclosing of an outgoing line switch of a transformer substation, wherein the outgoing line switch of the transformer substation needs to be provided with three reclosing; the primary reclosing is used for avoiding transient faults, and the line section switch does not act; the secondary reclosing locks locate and isolate the fault; and the third reclosing recovers the power supply of the non-fault area.
The invention has the advantages that:
the invention can simulate a real power distribution terminal by adopting a virtual power distribution terminal simulation modeling mode, can complete comprehensive test by only using one tested local power distribution terminal, and has the advantages of simple wiring, small test workload and high test efficiency.
Drawings
Fig. 1 is a schematic diagram of a virtual power distribution terminal model and a modeling method system architecture.
Fig. 2 is a topological diagram.
Fig. 3 is a process for in-place FA logic testing based on a virtual power distribution terminal model.
In the attached drawing, 1 is a test workstation, 2 is a model parameter setting module, 3 is a power distribution terminal, 4 is a program-controlled tester, 5 is a simulation module, 6 is a local topology building module, 7 is a power distribution network model to be tested, and 8 is a virtual power distribution terminal.
Detailed Description
A virtual power distribution terminal model based on local FA logic comprises a test workstation 1, a program-controlled tester 4, a model parameter setting module 2, a local topology building module 6 and a simulation module 5; the test workstation 1 is connected with the program-controlled tester 4 through a network; the testing workstation 1 is internally provided with a model parameter setting module 2, a local topology building module 6 and a simulation module 5, wherein the model parameter setting module 2 is used for modeling and parameter setting of a virtual power distribution terminal 8, and the local topology building module 6 is used for building an in-situ power distribution network operation topology; the simulation module 5 is mainly used for simulating the electric quantity in the normal state and the fault state of the power distribution network and simulating local FA control logic of each switching node in the power distribution network model; when the ground type FA logic of the power distribution terminal is tested, the power distribution terminal 3 is connected with the program-controlled tester 4 through a conventional electric cable, and the program-controlled tester 4 receives the electric data of the simulation module 5 and outputs the electric data corresponding to the switch node.
The test workstation 1 is used for carrying and controlling the operation of the modules; the program-controlled tester 4 is used for outputting simulation electric quantity; the virtual power distribution terminal 8 is configured for the node which does not need to be accessed to the test in the test network, and the virtual power distribution terminal 8 has the simulation function of local FA (including voltage time type, voltage current type, self-adaptive synthesis type and the like) logic with different roles and different modes, so that the test of the whole tested network can be smoothly carried out.
The local topology building module 6 mainly comprises equipment such as a transformer, a bus, a line, a switch and a load in the power distribution network, the system can draw the power distribution network to be tested according to user requirements, and in addition, the local topology building module 6 can set the connection relation, the equipment attributes and the like of each equipment in the power distribution network to be tested.
The model parameter setting module 2 can perform parameter setting on equipment in the power distribution network to be tested, and mainly comprises local FA logic type setting (including voltage time type, voltage current type, self-adaptive synthesis type and the like), switch node role setting, control function parameter setting (including switch attribute, switch input protection fixed value and FA fixed value, key control word input related parameters and the like) and is used for simulating the power distribution terminal.
The switch node role setting comprises a substation local side outlet circuit breaker, a trunk line section switch, a branch switch, a tie switch and an opposite side substation outlet circuit breaker.
The switch input protection fixed value comprises a current limit value, delay time and reclosing times, and the current limit value comprises current limit values corresponding to an overcurrent I section, an overcurrent II section and an overcurrent III section; the delay time comprises time corresponding to an overcurrent I section, an overcurrent II section and an overcurrent III section; the reclosing times include 0 time, 1 time and 2 times.
The switch input FA fixed value comprises short delay closing time X of an incoming call, long delay closing time XC of the incoming call, closing holding time Y, voltage loss delay opening time Z and contact switch delay closing time XL.
The key control words comprise local protection switching, local FA switching, fused FA switching, subsection or branch switching and contact switching related control words.
The simulation module 5 includes: the system comprises an electrical data simulation module used for simulating electrical quantities in normal operation and fault operation states of the power distribution network model and an on-site FA control logic simulation module used for simulating on-site FA control logic of each switching node in the power distribution network model.
The electrical data simulation module is used for simulating the electrical quantity of the power distribution network model 7 to be tested in normal operation and fault operation states; the electric quantity in the fault operation state comprises fault current and fault voltage flowing through a feeder line, a section and a branch under the condition of three-phase, two-phase or single-phase ground fault;
the local FA control logic simulation module comprises a plurality of FA control logic sub-simulation modules, and the FA control logic sub-simulation modules are configured at the switch nodes and simulate the corresponding switch nodes.
The local FA control logic simulation module comprises FA control logics of a voltage time type, a voltage current type, a self-adaptive synthesis type and the like, and the FA control logics are configured as follows:
(1) the voltage time type FA is realized by matching with secondary closing of an outlet breaker through the working characteristics of 'non-voltage switching-off and incoming call delay closing' of a switch, wherein the primary closing isolates a fault section, and the secondary closing recovers power supply of a non-fault section;
(2) the self-adaptive comprehensive FA realizes fault positioning and isolation self-adaptation of a multi-branch multi-connection distribution network frame by combining a short-circuit/grounding fault detection technology and a fault path priority processing control strategy through a non-voltage switching-off and incoming call delay switching-on mode and matching with secondary switching-on of an outlet circuit breaker, and the primary switching-on isolates a fault section and the secondary switching-on restores power supply of a non-fault section;
(3) the voltage and current type FA detects the voltage loss times and the fault current flowing times of the switch by a power distribution terminal, and simultaneously realizes the judgment and isolation of a fault section by combining the reclosing of an outgoing switch of a transformer substation, the outgoing switch of the transformer substation needs to be provided with three reclosings, one reclosing is used for avoiding transient faults, a line section switch does not act, the secondary reclosing locates and isolates the faults, and the three reclosing restores the power supply of a non-fault area.
A method for performing local FA logic test by using a virtual power distribution terminal model based on local FA logic specifically comprises the following steps:
(1) determining a power distribution network model for testing, and establishing a corresponding database in a power distribution network operating environment;
(2) taking out a power distribution network model for simulation;
(3) the tested power distribution terminal is accessed to different types of nodes, and the other nodes use the virtual power distribution terminal to respectively carry out corresponding FA control logic verification;
(4) and after all types of verification are completed, taking out another power distribution network model, and continuing verification until all models are verified.
According to the virtual power distribution terminal model based on the local FA logic and the modeling method, a tested local power distribution terminal can be connected with any switch node in a power distribution network through a program-controlled tester in due time, the switch node is logically controlled by the tested local power distribution terminal, other switch node virtual power distribution terminals in the power distribution network are replaced, and a local FA control logic simulation module in a test workstation simulates to verify the control logic of the tested local power distribution terminal; then, the test workstation adjusts the running state of the power distribution network model according to the actual control logic of the tested local power distribution terminal and the control logic simulated by the local FA control logic, and the like until the local power distribution terminal finishes testing each switch node so as to finish the comprehensive test of the power distribution network model; compared with the mode of adopting a plurality of tested on-site power distribution terminals, the invention adopts a mode of simulating and modeling the virtual power distribution terminal to simulate the real power distribution terminal, can complete comprehensive test by only using one tested on-site power distribution terminal, and has the advantages of simple wiring, small test workload and high test efficiency.
Example 1
The present invention will be described in further detail below with reference to specific embodiments and drawings.
The embodiment provides a virtual power distribution terminal model based on in-place FA logic, a schematic diagram of which is shown in fig. 1 and comprises a test workstation 1, a program-controlled tester 4, a model parameter setting module 2, a local topology building module 6 and a simulation module 5; the in-place type power distribution terminal simulation modeling and the in-place type FA logic are completed through the virtual power distribution terminal model and the modeling method.
The model parameter setting module 2 can perform parameter setting on the equipment in the distribution network to be tested, and mainly includes local FA logic type setting (including voltage time type, voltage current type, adaptive synthesis type and the like), switch node role setting, and control function parameter setting (including switch attribute, switch input protection fixed value and FA fixed value, key control word input related parameters and the like).
The switch node role setting comprises a substation local side outlet circuit breaker, a trunk line section switch, a branch switch, a tie switch and an opposite side substation outlet circuit breaker.
The switch input protection fixed value comprises a current limit value, delay time and reclosing times, and the current limit value comprises current limit values of an overcurrent I section, an overcurrent II section and an overcurrent III section; the delay time comprises time corresponding to an overcurrent I section, an overcurrent II section and an overcurrent III section; the reclosing times comprise 0, 1 and 2 times.
The switch input FA fixed value comprises an incoming call short delay closing time X, an incoming call long delay closing time XC, a closing holding time Y, a voltage loss delay opening time Z and a contact switch delay closing time XL;
the key control words comprise local protection switching, local FA switching, subsection or branch switching and contact switching related control words.
The local topology building module mainly comprises equipment such as a transformer, a bus, a line, a switch and a load in the power distribution network, the system can draw the power distribution network to be tested according to the requirements of users, and in addition, the module can set the connection relation, the equipment attribute and the like of each equipment in the power distribution network to be tested; as shown in fig. 2, in the local topology information of switch No. 2, the local device has only switch 2 and no local connection relationship; the external equipment directly connected with the No. 2 switch comprises the No. 1 switch, the No. 3 switch and the No. 4 switch, the connection relation among the No. 1 switch, the No. 3 switch, the No. 4 switch and the No. 2 switch is also the local topological parameter range of the No. 2 switch, all the information forms the local topological parameters of the No. 2 switch, on the topology, a left terminal and a right terminal are defined for each switch to form a left section and a right section, for example, the left section of the No. 2 switch is S (1,2,4), and the right section is S (2, 3); each switch may be regarded as a node, and all terminals or nodes connected to the node are formed into a list as topology information of the current node according to the above method.
The simulation module comprises: the system comprises an electrical data simulation module used for simulating electrical quantities in normal operation and fault operation states of a power distribution network model and an on-site FA control logic simulation module used for simulating on-site FA control logic of each switching node in the power distribution network model.
The in-place FA logic test based on the virtual power distribution terminal model is shown in the attached figure 3:
(1) determining a power distribution network model for testing (as shown in fig. 3), and establishing a corresponding database in a power distribution network operating environment;
(2) taking out a power distribution network model for simulation;
(3) connecting the tested power distribution terminal into different types of nodes (an outlet circuit breaker at the side of the transformer substation, a trunk line section switch, a branch switch, a tie switch and an outlet circuit breaker at the side of the transformer substation), and respectively carrying out FA processing logic verification on other nodes by using virtual power distribution terminals;
(4) and after all types of verification are completed, taking out another power distribution network model, and continuing verification until all models are verified.
In the embodiment, the simulation of the local FA action logic is realized by constructing the virtual power distribution terminal, and in the partial nodes of the power distribution network to be tested, the virtual power distribution terminal is used for replacing an actual power distribution terminal to construct a virtual-real combined local FA logic system level test environment, so that system level function tests can be carried out on various local power distribution terminals.
Claims (10)
1. A virtual power distribution terminal model based on in-place FA logic is characterized by comprising a test workstation (1), a program-controlled tester (4) and a model parameter setting module (2); the test workstation (1) is connected with the program-controlled tester (4) through a network; the testing workstation (1) is internally provided with a model parameter setting module (2), a local topology building module (6) and a simulation module (5), wherein the model parameter setting module (2) is used for modeling and parameter setting of a virtual power distribution terminal (8), the local topology building module (6) is used for building an in-place power distribution network operation topology, and the simulation module (5) is used for electric quantity simulation in a normal state and a fault state of the power distribution network and simulating in-place FA control logic of each switch node in the power distribution network model; when the ground type FA logic of the power distribution terminal is tested, the power distribution terminal (3) is connected with the program control tester (4) through an electric cable, and the program control tester (4) receives the electric data of the simulation module (5) and outputs the electric data corresponding to the switch node.
2. The virtual power distribution terminal model based on the local FA logic as claimed in claim 1, wherein the local topology building module (6) comprises a transformer, a bus, a line, a switch and a load in the power distribution network, and the local topology building module (6) is used for setting the connection relationship and the device attributes of each device in the power distribution network to be tested.
3. The virtual power distribution terminal model based on the local FA logic as claimed in claim 1, wherein the model parameter setting module (2) is used for setting parameters of the equipment in the power distribution network to be tested, including local FA logic type setting, switch node role setting and control function parameter setting; the FA logic type comprises a voltage time type, a voltage current type and a self-adaptive comprehensive type; the control function parameter setting comprises setting switch attributes, setting switch input protection constant values, setting switch input FA constant values and setting key control words.
4. The virtual power distribution terminal model based on the local FA logic as claimed in claim 3, wherein the switch node roles set by the switch node role setting include substation local side outlet breaker, trunk sectionalizing switch, branch switch, tie switch, and opposite side substation outlet breaker.
5. The virtual power distribution terminal model based on the local FA logic as claimed in claim 3, wherein the switch input protection constant value includes a current limit value, a delay time and a reclosing frequency, and the current limit value includes a current limit value corresponding to each of an overcurrent I section, an overcurrent II section and an overcurrent III section; the delay time comprises time corresponding to an overcurrent I section, an overcurrent II section and an overcurrent III section respectively; the reclosing times include 0 time, 1 time and 2 times.
6. The virtual power distribution terminal model based on the local FA logic as claimed in claim 3, wherein the switch input FA fixed values include an incoming short delay closing time X, an incoming long delay closing time XC, a closing holding time Y, a voltage loss delay opening time Z, and a tie switch delay closing time XL; the key control words comprise local protection switching, local FA switching, subsection or branch switching and contact switching related control words.
7. The virtual power distribution terminal model based on local FA logic according to claim 1, wherein the simulation module (5) comprises an electrical data simulation module for simulating electrical quantities in normal operation and fault operation states of the power distribution network model and an local FA control logic simulation module for simulating local FA control logic of switch nodes in the power distribution network model.
8. The virtual power distribution terminal model based on the local FA logic of claim 7, wherein the electrical quantities in the fault operation state comprise fault current and fault voltage flowing through the feeder, the segment and the branch when a three-phase or two-phase or single-phase ground fault occurs;
the local FA control logic simulation module comprises a plurality of FA control logic sub-simulation modules, and the FA control logic sub-simulation modules are configured at the switch nodes and simulate the corresponding switch nodes.
9. The virtual power distribution terminal model of claim 7, wherein the in-place FA control logic simulation module comprises a voltage-time type FA control logic, a voltage-current type FA control logic, and an adaptive integrated type FA control logic, and the voltage-time type FA control logic, the voltage-current type FA control logic, and the adaptive integrated type FA control logic are respectively as follows:
(1) the voltage time type FA control logic is specifically as follows: the method is realized by matching with secondary closing of an outlet circuit breaker through the working characteristics of 'non-voltage opening and incoming call delay closing' of a switch, wherein primary closing is used for isolating a fault section, and secondary closing is used for recovering power supply of a non-fault section;
(2) the self-adaptive comprehensive FA control logic is specifically as follows: the fault location and isolation self-adaption of the power distribution network frame are realized by combining a short circuit/grounding fault detection technology and a fault path priority processing control strategy in a non-voltage switching-off and incoming call delay switching-on mode and matching with secondary switching-on of an outlet breaker, and the power supply of a non-fault section is recovered by primary switching-on and isolation of a fault section;
(3) the voltage current type FA control logic is specifically as follows: the voltage loss times and the flowing times of fault current of the switch are detected by a power distribution terminal, and the judgment and the isolation of a fault interval are realized by combining the reclosing of an outgoing line switch of a transformer substation, wherein the outgoing line switch of the transformer substation needs to be provided with three reclosing; the primary reclosing is used for avoiding transient faults, and the line section switch does not act; the secondary reclosing locks locate and isolate the fault; and the third reclosing recovers the power supply of the non-fault area.
10. A method for performing in-place FA logic testing using the in-place FA logic based virtual power distribution terminal model of any of claims 1-9, comprising:
(1) determining a power distribution network model for testing, and establishing a corresponding database in a power distribution network operating environment;
(2) taking out a power distribution network model for simulation;
(3) the tested power distribution terminal is accessed to different types of nodes, and the other nodes use the virtual power distribution terminal to respectively carry out corresponding FA control logic verification;
(4) and after all types of verification are completed, taking out another power distribution network model, and continuing verification until all models are verified.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137344A (en) * | 2021-11-19 | 2022-03-04 | 许昌许继软件技术有限公司 | Automatic testing method for relay protection device with fault positioning function |
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| CN114137344A (en) * | 2021-11-19 | 2022-03-04 | 许昌许继软件技术有限公司 | Automatic testing method for relay protection device with fault positioning function |
| CN114137344B (en) * | 2021-11-19 | 2024-09-24 | 许继电气股份有限公司 | Automatic testing method for relay protection device with fault positioning function |
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| CN117010206B (en) * | 2023-08-14 | 2024-07-23 | 广东工业大学 | Simulation method and terminal for power distribution network local feeder automation |
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