CN111337790A - Distribution network real mirror test platform and detection method for primary and secondary fusion power distribution equipment - Google Patents
Distribution network real mirror test platform and detection method for primary and secondary fusion power distribution equipment Download PDFInfo
- Publication number
- CN111337790A CN111337790A CN202010193680.9A CN202010193680A CN111337790A CN 111337790 A CN111337790 A CN 111337790A CN 202010193680 A CN202010193680 A CN 202010193680A CN 111337790 A CN111337790 A CN 111337790A
- Authority
- CN
- China
- Prior art keywords
- primary
- fault
- power distribution
- secondary fusion
- distribution equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000004927 fusion Effects 0.000 title claims abstract description 93
- 238000001514 detection method Methods 0.000 title claims abstract description 73
- 238000012360 testing method Methods 0.000 title claims abstract description 63
- 230000007935 neutral effect Effects 0.000 claims abstract description 34
- 238000004088 simulation Methods 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims description 17
- 238000013486 operation strategy Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000011065 in-situ storage Methods 0.000 claims description 8
- 230000001629 suppression Effects 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 230000010354 integration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 14
- 230000006872 improvement Effects 0.000 description 6
- 238000002955 isolation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000016507 interphase Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a distribution network real mirror test platform and a detection method of primary and secondary fusion power distribution equipment, wherein the distribution network real mirror test platform comprises a power supply, a cable line, an overhead line, a switch cabinet, a neutral point grounding complete set of devices and a reserved interface; the power supply is connected with a cable line and an overhead line, the cable line comprises 1-loop real cable line and 2-loop analog cable lines to form a first section of bus, and three groups of outdoor switch boxes are connected on the cable line; the overhead line comprises 1-loop real overhead line and 2-loop simulation overhead line to form a second section of bus; 8 switch cabinets are arranged on the first section of bus; 7 switch cabinets and 1 reserved cabinet are arranged on the second section of bus; the neutral point grounding complete set device is connected with the first section of bus through a grounding transformer; the reserved interface is arranged on a cable line or an overhead line and is used for connecting test equipment. The invention can provide the field environment and the fault current which are closest to the real distribution network for the primary and secondary integration complete set of distribution equipment, and obtain the accurate detection result.
Description
Technical Field
The invention relates to the technical field of power equipment detection, in particular to a distribution network real mirror test platform and a detection method of primary and secondary fusion power distribution equipment.
Background
With the rapid development of distribution automation, a primary and secondary integrated complete set of distribution equipment becomes an important component of a distribution system. A secondary fuses complete set distribution equipment mainly includes that a secondary fuses complete set column-mounted switch, a secondary fuses into lantern ring box, possesses short circuit fault, different grade type ground fault's processing function, and supports multiple feeder automation strategy, including on-the-spot mode, main website concentration type, three kinds of types of intelligent distribution. The performance of the primary and secondary integrated complete power distribution equipment has great influence on the reliability of power supply of the distribution network, so that the method has great significance for accurate function detection.
At present, a function detection method for a primary and secondary fusion complete distribution equipment mainly comprises the steps of building a test circuit under a laboratory environment or using a detection instrument on the market, boosting 380V to 10kV through a boosting transformer, and forming simulated short-circuit fault current and grounding fault current in the test circuit through a current boosting control device, so as to detect the action condition of the primary and secondary fusion complete distribution equipment. The test method has great limitations, namely, the simulated earth fault current is greatly different from the fault current generated by the real distribution network fault; the environment of the distribution network site, such as electromagnetic interference, is different from the environment of a laboratory; and thirdly, parameters of the line and a neutral point grounding device and the like cannot completely replace real distribution network equipment. These differences affect the performance of the primary and secondary integrated complete power distribution equipment, and the ideal detection effect cannot be achieved.
Disclosure of Invention
The embodiment of the invention aims to provide a distribution network real-time mirror test platform and a detection method of a primary and secondary fusion power distribution device, and provides a distribution network real-time test platform with real net racks, lines, multiple neutral point grounding modes, various types of grounding faults and short-circuit faults, which can provide a field environment and a fault current which are closest to a real distribution network for a primary and secondary fusion complete set of power distribution device, so as to obtain an accurate detection result.
In order to achieve the above object, an embodiment of the present invention provides a distribution network real mirror test platform, which includes a power supply, a cable line, an overhead line, a switch cabinet, a neutral point grounding complete set of devices, and a reserved interface; the power supply is connected with the cable line and the overhead line, the cable line comprises 1-loop real cable line and 2-loop simulation cable line to form a first section of bus, and three groups of outdoor switch boxes are connected on the cable line; the overhead line comprises 1-loop real overhead line and 2-loop simulation overhead line to form a second section of bus; 8 switch cabinets, namely 1 incoming line cabinet, 1 voltage transformer cabinet and 6 outgoing line cabinets, are arranged on the first section of bus; 7 switch cabinets and 1 reserved cabinet are arranged on the second section of bus bar, and the 7 switch cabinets are respectively 1 incoming line cabinet, 1 voltage transformer cabinet and 5 outgoing line cabinets; the neutral point grounding complete set device is connected with the first section of bus through a grounding transformer; the reserved interface is arranged on the cable line or the overhead line and used for connecting test equipment.
Preferably, the neutral grounding mode of the neutral grounding complete set of devices comprises grounding through an arc suppression coil, grounding through a small resistor, grounding through the arc suppression coil and the small resistor, and non-grounding of the neutral point.
Preferably, the cable line can construct a single radiation structure, a single ring network structure, a 2-1 single ring network structure, a 3-1 single ring network structure, a 2 supply 1 structure and a double ring network structure.
Another embodiment of the invention provides a detection method for a primary and secondary fusion power distribution device, which is performed based on any one of the distribution network real mirror test platforms, and includes short-circuit fault processing function detection, single-phase ground fault processing function detection, in-situ mode feeder automation strategy detection, master station centralized feeder automation strategy detection and intelligent distributed feeder automation strategy detection.
Preferably, the short-circuit fault processing function detection specifically includes:
and the primary and secondary fusion power distribution equipment is connected to the reserved interface of the real-time distribution network mirror test platform, and the two-phase short-circuit fault and the three-phase short-circuit fault are generated by the short-circuit fault simulation unit of the primary and secondary fusion power distribution equipment, so that the fault type can be correctly judged and the action can be carried out by the primary and secondary fusion power distribution equipment.
Preferably, the single-phase ground fault processing function detection specifically includes:
and the primary and secondary fusion power distribution equipment is connected to the reserved interface of the distribution network real mirror test platform, and a metallic ground fault, an arc grounding fault, a grounding fault with different resistance values and an arc grounding fault through a transition resistor are generated through a single-phase ground fault simulation unit and a grouping switching unit of the primary and secondary fusion power distribution equipment, so that the primary and secondary fusion power distribution equipment can correctly judge the fault type and act.
Preferably, the in-place mode feeder automation policy detection specifically includes:
setting the operation strategy of the primary and secondary fusion power distribution equipment into a self-adaptive comprehensive type, a voltage time type or a voltage-current time type, connecting the primary and secondary fusion power distribution equipment into the reserved interface of the distribution network real mirror test platform, simulating short-circuit fault and single-phase earth fault at a preset first fault occurrence point, and enabling the primary and secondary fusion power distribution equipment to act correctly.
Preferably, the main station centralized feeder automation policy detection specifically includes:
the operation strategy of the primary and secondary fusion power distribution equipment is set to be a main station centralized type, the primary and secondary fusion power distribution equipment is connected into the distribution network real mirror test platform, the reserved interface simulates a short-circuit fault and a single-phase earth fault at a preset second fault occurrence point, the primary and secondary fusion power distribution equipment can correctly detect fault information and upload the fault information to a power distribution automation main station, and meanwhile, the command of the main station is received to perform correct action.
Preferably, the intelligent distributed feeder automation policy detection specifically includes:
setting three reserved interfaces on the distribution network real-time mirror test platform, and establishing an optical fiber peer-to-peer channel between each reserved interface;
setting operation strategies of the three primary and secondary fusion power distribution equipment as intelligent distributed feeder automation strategies, and correspondingly accessing the three primary and secondary fusion power distribution equipment to the reserved interfaces;
and simulating the occurrence of short-circuit fault and single-phase earth fault at a preset third fault occurrence point, wherein the three primary and secondary fusion power distribution equipment can correctly detect the fault type and can mutually communicate and correctly act.
Compared with the prior art, the distribution network real-time mirror test platform and the detection method of the primary and secondary fusion power distribution equipment provided by the embodiment of the invention provide a distribution network real-time test platform with real net racks, lines, multiple neutral point grounding modes, various types of grounding faults and short-circuit faults, and can provide the closest real distribution network site environment and fault current for the primary and secondary fusion complete set of power distribution equipment to obtain an accurate detection result.
Drawings
Fig. 1 is a schematic diagram of an overall design framework of a distribution real-time mirror test platform according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a short-circuit fault simulation unit of a secondary convergence power distribution apparatus according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a single-phase ground fault simulation unit of a secondary convergence power distribution apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a packet switching unit of a primary-secondary convergence power distribution device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating in-situ mode feeder automation policy detection for a secondary convergence power distribution device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a primary station centralized feeder automation policy detection of a secondary convergence power distribution device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an intelligent distributed feeder automation policy detection of a primary and secondary integrated power distribution device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, which is a schematic diagram of an overall design framework of a distribution network real-time mirror test platform provided in an embodiment of the present invention, the distribution network real-time mirror test platform includes a power supply, a cable line, an overhead line, a switch cabinet, a neutral point grounding complete set of devices, and a reserved interface; the power supply is connected with the cable line and the overhead line, the cable line comprises 1-loop real cable line and 2-loop simulation cable line to form a first section of bus, and three groups of outdoor switch boxes are connected on the cable line; the overhead line comprises 1-loop real overhead line and 2-loop simulation overhead line to form a second section of bus; 8 switch cabinets, namely 1 incoming line cabinet, 1 voltage transformer cabinet and 6 outgoing line cabinets, are arranged on the first section of bus; 7 switch cabinets and 1 reserved cabinet are arranged on the second section of bus bar, and the 7 switch cabinets are respectively 1 incoming line cabinet, 1 voltage transformer cabinet and 5 outgoing line cabinets; the neutral point grounding complete set device is connected with the first section of bus through a grounding transformer; the reserved interface is arranged on the cable line or the overhead line and used for connecting test equipment.
The distribution network real-time mirror test platform comprises a power supply, a cable line, an overhead line, a switch cabinet, a neutral point grounding complete set of devices and a reserved interface; the power supply consists of a 1-turn 10kV special line and an isolation transformer, the rated capacity of the isolation transformer is 2000kVA, and the output voltage is 10 kV. The power is connected with cable run, overhead line, and more specifically, after the power passes through isolation transformer, set up to single bus segmentation mode. The cable line includes 1 time true type cable line and 2 times simulation cable line, constitutes first section generating line, also called I section generating line, is connected with three groups of outdoor switch boxes on the cable line. The overhead line comprises 1-time real overhead line and 2-time analog overhead line, and forms a second section of bus, also called a second section of bus. 8 switch cabinets, namely 1 incoming line cabinet (G01 in fig. 1), 1 voltage transformer cabinet (also called PT cabinet) and 6 outgoing line cabinets (G02-G07 in fig. 1), are arranged on the first section of bus; 7 switch cabinets and 1 reservation cabinet are arranged on the second section of bus, and the 7 switch cabinets are respectively 1 incoming line cabinet (G08 in fig. 1), 1 voltage transformer cabinet and 5 outgoing line cabinets (G09-G013 in fig. 1). The switch cabinets are all provided with protection measurement and control devices and have protection functions of quick disconnection, overcurrent and the like. The neutral grounding complete set is connected with the first section of bus bar through a grounding transformer, and preferably, the neutral grounding complete set is connected with the first section of bus bar G06 outlet cabinet through the grounding transformer. The reserved interface is arranged on a cable line or an overhead line and is used for connecting test equipment. That is to say, reserve the interface and can set up on each line of distribution network real mirror test platform according to the test needs, including true type cable run, simulation cable run, true type overhead line and simulation overhead line. The distribution network real-time test platform covers main 10kV distribution network elements such as 10kV overhead lines, cable lines, column switches and switch cabinets.
The distribution network real-environment test platform provided by the embodiment of the invention can simulate real net racks, lines, various neutral point grounding modes and various types of grounding faults and short-circuit faults, can provide the closest real distribution network site environment and fault current for a primary and secondary integrated complete distribution equipment, and can obtain an accurate detection result.
As a modification of the above scheme, the neutral point grounding mode of the neutral point grounding complete set of device comprises grounding through the arc suppression coil, grounding through the small resistor, grounding through the arc suppression coil and the small resistor, and non-grounding of the neutral point.
Specifically, the neutral grounding mode of the neutral grounding complete set of devices comprises grounding through an arc suppression coil, grounding through a small resistor, grounding through the arc suppression coil and the small resistor, and non-grounding of the neutral point. The neutral point grounding complete device is used for leading out a system neutral point and grounding. As can be seen from fig. 1, the neutral grounding complete set is also provided with a backup branch to be used as a backup in case of failure of other branches.
As an improvement of the scheme, the cable line can construct a single radiation structure, a single ring network structure, a 2-1 single ring network structure, a 3-1 single ring network structure, a 2 supply 1 backup structure and a double ring network structure.
Specifically, the cable line can construct a single radiation structure, a single ring network structure, a 2-1 single ring network structure, a 3-1 single ring network structure, a 2 supply 1 backup structure and a double ring network structure. The 3-1 single-ring network structure refers to 3 loops 1. The overhead line can construct a single radiation structure, a tail end connection structure, a multi-section moderate connection structure, a two-supply one-standby structure and a three-supply one-standby structure. Therefore, the line network frame of the distribution network real-environment test platform can construct various circuit structures required by power test, and the applicability is strong.
The embodiment of the invention provides a detection method of primary and secondary fusion power distribution equipment, which is performed based on a distribution network real mirror test platform in any embodiment of the invention and comprises short-circuit fault processing function detection, single-phase earth fault processing function detection, in-situ mode feeder automation strategy detection, main station centralized feeder automation strategy detection and intelligent distributed feeder automation strategy detection.
Specifically, a detection method for a primary and secondary fusion power distribution device is performed based on the distribution network real mirror test platform according to any one of the embodiments, and includes short-circuit fault processing function detection, single-phase ground fault processing function detection, in-situ mode feeder automation policy detection, master station centralized feeder automation policy detection, and intelligent distributed feeder automation policy detection. The primary and secondary fusion power distribution equipment has the functions of processing short-circuit faults and ground faults and supports various feeder automation strategies. Therefore, short-circuit fault processing function detection, single-phase ground fault processing function detection, in-situ mode feeder automation strategy detection, main station centralized feeder automation strategy detection and intelligent distributed feeder automation strategy detection are basic contents of function detection of primary and secondary fusion power distribution equipment.
The general steps are as follows: the method comprises the steps of connecting a primary and secondary fusion power distribution device into a distribution network real mirror test platform, selecting a network frame form according to test requirements, selecting a neutral point grounding mode through a neutral point grounding complete device, simulating to break down, observing state change and action of the primary and secondary fusion power distribution device, and judging whether relevant regulations are met.
As an improvement of the above scheme, the short-circuit fault processing function detection specifically includes:
and the primary and secondary fusion power distribution equipment is connected to the reserved interface of the real-time distribution network mirror test platform, and the two-phase short-circuit fault and the three-phase short-circuit fault are generated by the short-circuit fault simulation unit of the primary and secondary fusion power distribution equipment, so that the fault type can be correctly judged and the action can be carried out by the primary and secondary fusion power distribution equipment.
Specifically, a primary and secondary fusion power distribution device is connected to a reserved interface of a distribution network real mirror test platform, a short-circuit fault simulation unit of the primary and secondary fusion power distribution device generates an interphase two-phase short-circuit fault and a three-phase short-circuit fault, and the primary and secondary fusion power distribution device can correctly judge the fault type and act. For example, when the fault type is a circuit breaker type switch, the fault can be tripped out directly; when the fault type is load switch equipment, the short-circuit fault event can be sent to the master station. Fig. 2 is a schematic diagram of a short-circuit fault simulation unit of a secondary fusion power distribution apparatus according to the embodiment of the present invention. When a fault occurs in simulation, the short-circuit fault simulation unit simulates an interphase two-phase short-circuit fault and a three-phase short-circuit fault respectively by controlling the phase-A split-phase switch, the phase-B split-phase switch and the phase-C split-phase switch, wherein the interphase short-circuit fault current can reach 1500A at most, and the longest duration time is 200 ms; the fault current can form phase-to-phase fault through different resistors to be adjusted, and the fault current is realized through 35kV isolation disconnecting links (different resistors are selected).
As an improvement of the above scheme, the single-phase ground fault processing function detection specifically includes:
and the primary and secondary fusion power distribution equipment is connected to the reserved interface of the distribution network real mirror test platform, and a metallic ground fault, an arc grounding fault, a grounding fault with different resistance values and an arc grounding fault through a transition resistor are generated through a single-phase ground fault simulation unit and a grouping switching unit of the primary and secondary fusion power distribution equipment, so that the primary and secondary fusion power distribution equipment can correctly judge the fault type and act.
Specifically, a primary and secondary fusion power distribution device is connected to a reserved interface of a distribution network real mirror test platform, a single-phase earth fault simulation unit and a grouping switching unit of the primary and secondary fusion power distribution device generate a metallic earth fault, an arc earth fault passing through different resistance values and an arc earth fault passing through a transition resistor, the primary and secondary fusion power distribution device can correctly judge the fault type and act, namely the primary and secondary fusion power distribution device can correctly judge the fault type, the single-phase earth fault can be processed, and a fault event is supported to be sent to a main station. Referring to fig. 3 and fig. 4, schematic diagrams of a single-phase ground fault simulation unit and a packet switching unit of a secondary convergence power distribution device according to the embodiment of the present invention are respectively shown. The group switching unit is also called as a group switching unit for ground faults with different resistance values. Different types of single-phase earth faults are generated through switch switching simulation, and the method specifically comprises the following steps: the metallic ground fault is achieved by switching the 12kV vacuum contactor of fig. 3; the arc grounding fault is realized by switching the arc grounding simulation device in the figure 3; the grounding faults with different resistance values are realized by grouping the switching units in the switching diagram 4, and the resistance value range is 50-2000 omega; the arc ground fault via the transition resistor is realized by combining the single-phase ground fault simulation unit of fig. 3 and the group switching unit of fig. 4.
As an improvement of the above scheme, the in-place mode feeder automation policy detection specifically includes:
setting the operation strategy of the primary and secondary fusion power distribution equipment into a self-adaptive comprehensive type, a voltage time type or a voltage-current time type, connecting the primary and secondary fusion power distribution equipment into the reserved interface of the distribution network real mirror test platform, simulating short-circuit fault and single-phase earth fault at a preset first fault occurrence point, and enabling the primary and secondary fusion power distribution equipment to act correctly.
Specifically, the operation strategy of the primary and secondary fusion power distribution equipment is set to be self-adaptive comprehensive type, voltage time type or voltage-current time type, the primary and secondary fusion power distribution equipment is connected to a reserved interface of a distribution network real mirror test platform, short-circuit fault and single-phase earth fault are simulated at a preset first fault occurrence point, and the primary and secondary fusion power distribution equipment can correctly act. Fig. 5 is a schematic diagram of in-situ mode feeder automation policy detection of a secondary convergence power distribution device according to the embodiment of the present invention. According to the technical principle of on-site type feeder automation, after a circuit structure shown in fig. 5 is built in a distribution network real mirror test platform, a primary and secondary fusion power distribution device is connected to a load switch 2, a preset first fault occurrence point is arranged on a line between the load switch 2 and a load switch 3, fault types comprise a short-circuit fault and a single-phase earth fault, feeder automation logic of the primary and secondary fusion power distribution device is detected, and actions of the primary and secondary fusion power distribution device accord with the technical principle of on-site type feeder automation.
As an improvement of the above scheme, the main station centralized feeder automation policy detection specifically includes:
the operation strategy of the primary and secondary fusion power distribution equipment is set to be a main station centralized type, the primary and secondary fusion power distribution equipment is connected into the distribution network real mirror test platform, the reserved interface simulates a short-circuit fault and a single-phase earth fault at a preset second fault occurrence point, the primary and secondary fusion power distribution equipment can correctly detect fault information and upload the fault information to a power distribution automation main station, and meanwhile, the command of the main station is received to perform correct action.
Specifically, the operation strategy of the primary and secondary fusion power distribution equipment is set to be a main station centralized type, the primary and secondary fusion power distribution equipment is connected into a distribution network real mirror test platform, a reserved interface is used for simulating short-circuit fault and single-phase earth fault at a preset second fault occurrence point, the primary and secondary fusion power distribution equipment can correctly detect fault information and upload the fault information to a power distribution automation main station, and meanwhile, the command of the main station is received to correctly act. Fig. 6 is a schematic diagram of main station centralized feeder automation policy detection of a primary and secondary convergence power distribution device according to the embodiment of the present invention. Similarly, after a circuit structure shown in fig. 6 is built in a distribution network real mirror test platform, a primary and a secondary fusion power distribution device are connected to a load switch 2, a preset second fault occurrence point is arranged on a line between the load switch 2 and a load switch 3, fault types comprise a short-circuit fault and a single-phase earth fault, a feeder automation logic of the primary and the secondary fusion power distribution device is detected, the primary and the secondary fusion power distribution devices can correctly detect fault information and upload the fault information to a distribution automation main station, the main station receives a main station instruction to correctly act, a fault section is determined, a fault point is isolated, and power supply of a non-fault section is recovered.
As an improvement of the above scheme, the intelligent distributed feeder automation policy detection specifically includes:
setting three reserved interfaces on the distribution network real-time mirror test platform, and establishing an optical fiber peer-to-peer channel between each reserved interface;
setting operation strategies of the three primary and secondary fusion power distribution equipment as intelligent distributed feeder automation strategies, and correspondingly accessing the three primary and secondary fusion power distribution equipment to the reserved interfaces;
and simulating the occurrence of short-circuit fault and single-phase earth fault at a preset third fault occurrence point, wherein the three primary and secondary fusion power distribution equipment can correctly detect the fault type and can mutually communicate and correctly act.
It should be noted that, in-situ mode feeder automation strategy detection and main station centralized feeder automation strategy detection only need to reserve 1 reserved interface on the distribution network real mirror test platform, and switching can be performed through a bypass switch. And because the communication and automation logic of the tested equipment is not universal with the existing equipment, if a primary and secondary fusion power distribution equipment of a certain manufacturer needs to be detected, 3 reserved interfaces need to be reserved on a distribution network real-time mirror test platform, and an optical fiber peer-to-peer communication channel is established between each reserved interface, wherein the slow motion type can be realized through a wireless communication channel, and then the 3 primary and secondary fusion power distribution equipment of the manufacturer are accessed for detection.
Fig. 7 is a schematic diagram of the intelligent distributed feeder automation policy detection of the primary and secondary integrated power distribution equipment according to the embodiment of the present invention. A circuit structure as shown in fig. 6 is built on a distribution network real-time mirror test platform, three reserved interfaces are arranged at a load switch 1, a load switch 2 and a load switch 3 of fig. 7, and meanwhile, an optical fiber peer-to-peer channel is built between each reserved interface.
The operation strategies of the three primary and secondary fusion power distribution devices are set as intelligent distributed feeder automation strategies, and the three primary and secondary fusion power distribution devices are correspondingly connected into reserved interfaces, namely one primary and secondary fusion power distribution device is connected into one reserved interface.
And a preset third fault occurrence point is arranged on a line between the load switch 2 and the load switch 3, different types of short-circuit faults and single-phase earth faults are simulated at the preset third fault occurrence point, and the feeder automation logic of the tested equipment is detected. The three primary and secondary fusion power distribution devices can correctly detect the fault type, can mutually communicate and correctly act, can identify the fault section, isolates the fault point through the switching action, and recovers the power supply of the non-fault section.
In summary, the distribution network real-time mirror test platform and the detection method of the primary and secondary fusion power distribution equipment provided by the embodiment of the invention provide a distribution network real-time test platform with real net racks, lines, multiple neutral point grounding modes and various types of grounding faults and short-circuit faults, wherein the distribution network real-time test platform is built under a real distribution network environment, and both a physical environment and an electromagnetic environment are consistent with the real distribution network environment; the simulated short-circuit fault and the single-phase earth fault are generated on a real 10kV distribution network line, the short-circuit current characteristic of the simulated short-circuit fault and the single-phase earth fault is closest to the real situation, and the simulated short-circuit fault and the single-phase earth fault are more accurate compared with the simulated current used by a laboratory or other detection equipment; various network distribution equipment such as lines, neutral point grounding devices, switches and transformers are real network distribution equipment, and parameters of the network distribution equipment can replace typical network distribution equipment, so that higher detection precision is achieved; the method can provide the nearest real distribution network site environment and fault current for the primary and secondary integration complete set of distribution equipment, and obtain an accurate detection result.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A distribution network real mirror test platform is characterized by comprising a power supply, a cable line, an overhead line, a switch cabinet, a neutral point grounding complete set of devices and a reserved interface; the power supply is connected with the cable line and the overhead line, the cable line comprises 1-loop real cable line and 2-loop simulation cable line to form a first section of bus, and three groups of outdoor switch boxes are connected on the cable line; the overhead line comprises 1-loop real overhead line and 2-loop simulation overhead line to form a second section of bus; 8 switch cabinets, namely 1 incoming line cabinet, 1 voltage transformer cabinet and 6 outgoing line cabinets, are arranged on the first section of bus; 7 switch cabinets and 1 reserved cabinet are arranged on the second section of bus bar, and the 7 switch cabinets are respectively 1 incoming line cabinet, 1 voltage transformer cabinet and 5 outgoing line cabinets; the neutral point grounding complete set device is connected with the first section of bus through a grounding transformer; the reserved interface is arranged on the cable line or the overhead line and used for connecting test equipment.
2. The distribution network real mirror test platform of claim 1, wherein the neutral grounding mode of the neutral grounding complete set of devices comprises grounding through an arc suppression coil, grounding through a small resistor, grounding through the arc suppression coil and the small resistor and non-grounding the neutral point.
3. The distribution network real mirror test platform as claimed in claim 1, wherein the cable line can construct a single radiation structure, a single ring network structure, a 2-1 single ring network structure, a 3-1 single ring network structure, a 2 supply 1 device structure and a double ring network structure.
4. A detection method of primary and secondary fusion power distribution equipment is carried out based on the distribution network real mirror test platform of any one of claims 1 to 3, and comprises short-circuit fault processing function detection, single-phase earth fault processing function detection, local mode feeder automation strategy detection, main station centralized feeder automation strategy detection and intelligent distributed feeder automation strategy detection.
5. The method for detecting the primary and secondary fusion power distribution equipment according to claim 4, wherein the short-circuit fault processing function detection specifically comprises:
and the primary and secondary fusion power distribution equipment is connected to the reserved interface of the real-time distribution network mirror test platform, and the two-phase short-circuit fault and the three-phase short-circuit fault are generated by the short-circuit fault simulation unit of the primary and secondary fusion power distribution equipment, so that the fault type can be correctly judged and the action can be carried out by the primary and secondary fusion power distribution equipment.
6. The method for detecting the primary and secondary fusion power distribution equipment according to claim 4, wherein the single-phase ground fault handling function detection specifically comprises:
and the primary and secondary fusion power distribution equipment is connected to the reserved interface of the distribution network real mirror test platform, and a metallic ground fault, an arc grounding fault, a grounding fault with different resistance values and an arc grounding fault through a transition resistor are generated through a single-phase ground fault simulation unit and a grouping switching unit of the primary and secondary fusion power distribution equipment, so that the primary and secondary fusion power distribution equipment can correctly judge the fault type and act.
7. The method according to claim 4, wherein the in-situ mode feeder automation policy detection comprises:
setting the operation strategy of the primary and secondary fusion power distribution equipment into a self-adaptive comprehensive type, a voltage time type or a voltage-current time type, connecting the primary and secondary fusion power distribution equipment into the reserved interface of the distribution network real mirror test platform, simulating short-circuit fault and single-phase earth fault at a preset first fault occurrence point, and enabling the primary and secondary fusion power distribution equipment to act correctly.
8. The method for detecting the primary and secondary fusion power distribution equipment according to claim 4, wherein the primary station centralized feeder automation policy detection specifically comprises:
the operation strategy of the primary and secondary fusion power distribution equipment is set to be a main station centralized type, the primary and secondary fusion power distribution equipment is connected into the distribution network real mirror test platform, the reserved interface simulates a short-circuit fault and a single-phase earth fault at a preset second fault occurrence point, the primary and secondary fusion power distribution equipment can correctly detect fault information and upload the fault information to a power distribution automation main station, and meanwhile, the command of the main station is received to perform correct action.
9. The method for detecting the primary and secondary converged power distribution equipment according to claim 4, wherein the intelligent distributed feeder automation policy detection specifically comprises:
setting three reserved interfaces on the distribution network real-time mirror test platform, and establishing an optical fiber peer-to-peer channel between each reserved interface;
setting operation strategies of the three primary and secondary fusion power distribution equipment as intelligent distributed feeder automation strategies, and correspondingly accessing the three primary and secondary fusion power distribution equipment to the reserved interfaces;
and simulating the occurrence of short-circuit fault and single-phase earth fault at a preset third fault occurrence point, wherein the three primary and secondary fusion power distribution equipment can correctly detect the fault type and can mutually communicate and correctly act.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193680.9A CN111337790A (en) | 2020-03-18 | 2020-03-18 | Distribution network real mirror test platform and detection method for primary and secondary fusion power distribution equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193680.9A CN111337790A (en) | 2020-03-18 | 2020-03-18 | Distribution network real mirror test platform and detection method for primary and secondary fusion power distribution equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111337790A true CN111337790A (en) | 2020-06-26 |
Family
ID=71184541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010193680.9A Pending CN111337790A (en) | 2020-03-18 | 2020-03-18 | Distribution network real mirror test platform and detection method for primary and secondary fusion power distribution equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111337790A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711194A (en) * | 2020-07-20 | 2020-09-25 | 西南石油大学 | Power supply guarantee device based on bypass operation integration |
| CN112540267A (en) * | 2020-12-28 | 2021-03-23 | 华北科技学院 | Automatic fault point selection and switching centralized control device for power distribution network true test |
| CN112557706A (en) * | 2020-11-27 | 2021-03-26 | 广西电网有限责任公司电力科学研究院 | Subassembly that switch box that awaits measuring was nimble to be inserted in distribution network real estate test platform |
| CN112986743A (en) * | 2021-03-31 | 2021-06-18 | 国网河南省电力公司电力科学研究院 | Active intervention type arc suppression device test system function system |
| CN113030636A (en) * | 2021-02-26 | 2021-06-25 | 国网河南省电力公司电力科学研究院 | Active intervention type arc suppression device test system |
| CN114019300A (en) * | 2021-10-17 | 2022-02-08 | 国网福建省电力有限公司 | Multi-source signal-based comprehensive study and judgment method for power distribution network ground loss fault |
| CN114646349A (en) * | 2022-03-21 | 2022-06-21 | 南方电网科学研究院有限责任公司 | Test system for primary and secondary fusion equipment of power distribution network |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3474317A (en) * | 1967-03-07 | 1969-10-21 | Overhead Door Corp | Safety switch cutoff control |
| US6894478B1 (en) * | 2001-10-26 | 2005-05-17 | E.O. Schweitzer Manufacturing Company, Inc. | Fault indicator with automatically configured trip settings |
| US20060146696A1 (en) * | 2005-01-06 | 2006-07-06 | At&T Corp. | Bandwidth management for MPLS fast rerouting |
| CN105070157A (en) * | 2015-07-16 | 2015-11-18 | 国网技术学院 | Feeder automation simulation training system |
| CN109167709A (en) * | 2018-10-11 | 2019-01-08 | 陕西银河天地智能配网技术有限公司 | Feeder automation scene full-automatic testing method based on cloud platform |
| CN109669103A (en) * | 2017-10-13 | 2019-04-23 | 中国电力科学研究院 | A kind of polymorphic complex fault analogue test platform of true type power distribution network and test method |
| CN109713795A (en) * | 2019-01-08 | 2019-05-03 | 烟台科大正信电气有限公司 | Distributed feeder automation method based on network peer-to-peer communications |
| CN110086252A (en) * | 2019-04-03 | 2019-08-02 | 国网江西省电力有限公司电力科学研究院 | A kind of polymorphic feeder automation on-site testing device |
| CN110865277A (en) * | 2019-12-04 | 2020-03-06 | 国网冀北电力有限公司电力科学研究院 | Feeder automation function testing device |
-
2020
- 2020-03-18 CN CN202010193680.9A patent/CN111337790A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3474317A (en) * | 1967-03-07 | 1969-10-21 | Overhead Door Corp | Safety switch cutoff control |
| US6894478B1 (en) * | 2001-10-26 | 2005-05-17 | E.O. Schweitzer Manufacturing Company, Inc. | Fault indicator with automatically configured trip settings |
| US20060146696A1 (en) * | 2005-01-06 | 2006-07-06 | At&T Corp. | Bandwidth management for MPLS fast rerouting |
| CN105070157A (en) * | 2015-07-16 | 2015-11-18 | 国网技术学院 | Feeder automation simulation training system |
| CN109669103A (en) * | 2017-10-13 | 2019-04-23 | 中国电力科学研究院 | A kind of polymorphic complex fault analogue test platform of true type power distribution network and test method |
| CN109167709A (en) * | 2018-10-11 | 2019-01-08 | 陕西银河天地智能配网技术有限公司 | Feeder automation scene full-automatic testing method based on cloud platform |
| CN109713795A (en) * | 2019-01-08 | 2019-05-03 | 烟台科大正信电气有限公司 | Distributed feeder automation method based on network peer-to-peer communications |
| CN110086252A (en) * | 2019-04-03 | 2019-08-02 | 国网江西省电力有限公司电力科学研究院 | A kind of polymorphic feeder automation on-site testing device |
| CN110865277A (en) * | 2019-12-04 | 2020-03-06 | 国网冀北电力有限公司电力科学研究院 | Feeder automation function testing device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711194A (en) * | 2020-07-20 | 2020-09-25 | 西南石油大学 | Power supply guarantee device based on bypass operation integration |
| CN111711194B (en) * | 2020-07-20 | 2023-09-12 | 西南石油大学 | Power supply guarantee device based on bypass operation integration |
| CN112557706A (en) * | 2020-11-27 | 2021-03-26 | 广西电网有限责任公司电力科学研究院 | Subassembly that switch box that awaits measuring was nimble to be inserted in distribution network real estate test platform |
| CN112557706B (en) * | 2020-11-27 | 2023-03-14 | 广西电网有限责任公司电力科学研究院 | Subassembly that switch box that awaits measuring was nimble to be inserted in distribution network real estate test platform |
| CN112540267A (en) * | 2020-12-28 | 2021-03-23 | 华北科技学院 | Automatic fault point selection and switching centralized control device for power distribution network true test |
| CN113030636A (en) * | 2021-02-26 | 2021-06-25 | 国网河南省电力公司电力科学研究院 | Active intervention type arc suppression device test system |
| CN113030636B (en) * | 2021-02-26 | 2022-04-08 | 国网河南省电力公司电力科学研究院 | Active intervention type arc suppression device test system |
| CN112986743A (en) * | 2021-03-31 | 2021-06-18 | 国网河南省电力公司电力科学研究院 | Active intervention type arc suppression device test system function system |
| CN114019300A (en) * | 2021-10-17 | 2022-02-08 | 国网福建省电力有限公司 | Multi-source signal-based comprehensive study and judgment method for power distribution network ground loss fault |
| CN114019300B (en) * | 2021-10-17 | 2023-08-04 | 国网福建省电力有限公司 | Comprehensive studying and judging method for power distribution network ground fault based on multi-source signals |
| CN114646349A (en) * | 2022-03-21 | 2022-06-21 | 南方电网科学研究院有限责任公司 | Test system for primary and secondary fusion equipment of power distribution network |
| CN114646349B (en) * | 2022-03-21 | 2024-06-25 | 南方电网科学研究院有限责任公司 | Power distribution network secondary fuses and equips test system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111337790A (en) | Distribution network real mirror test platform and detection method for primary and secondary fusion power distribution equipment | |
| CN111694288B (en) | On-site feeder automation function closed-loop automatic test platform | |
| CN109494696A (en) | Power distribution network asymmetry fault section and isolation method and system based on adaptive reclosing | |
| CN113030636B (en) | Active intervention type arc suppression device test system | |
| CN106771770B (en) | Movable mould test system for wide area protection test | |
| CN112415456A (en) | Physical simulation platform for detecting power distribution fault indicator and detection method | |
| CN109586254B (en) | Voltage time type feeder line reverse closing locking method for half-cycle voltage transient quantity | |
| Lifan et al. | The Experiences of Decentralized Self-Healing Grid | |
| Rosa et al. | A systemic approach for assessment of advanced distribution automation functionalities | |
| CN215599288U (en) | Distribution intelligent terminal grounding performance testing device | |
| CN213517929U (en) | Power distribution physical simulation platform | |
| CN114063470A (en) | Feeder automation physical simulation verification platform and test method | |
| JP2008263761A (en) | Power line artificial ground fault testing system and method | |
| Kokor et al. | Effects of neutral point grounding methods on single-phase short circuit fault characteristics | |
| Shen et al. | Grounding transformer application, modeling, and simulation | |
| Salehi et al. | Developing virtual protection system for control and self-healing of power system | |
| Ristanovic et al. | Design and implementation of scenarios for evaluating and testing distance relays | |
| Apel et al. | Fault management in electrical distribution networks | |
| Min et al. | A Dynamic Simulation Platform for Testing The Performance of Power Quality Management Devices in Distribution Networks | |
| Nimmersjo et al. | Protective relay testing using a modern digital real time simulator | |
| Ghezelayagh | Power Systems Protection, control &automation: Numerical Relays: Field Applications | |
| CN214479045U (en) | Closed-loop transfer supply display device between 35kV lines under phase difference condition | |
| CN214427528U (en) | Physical simulation platform for detecting secondary resonance elimination device | |
| Borscevskis et al. | Directional earthfault protection operation and setup aspects in medium voltage compensated network | |
| CN216285678U (en) | Physical simulation platform for detecting power distribution fault indicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200626 |