CN106772184B - Ground fault simulation device and control method - Google Patents
Ground fault simulation device and control method Download PDFInfo
- Publication number
- CN106772184B CN106772184B CN201710013939.5A CN201710013939A CN106772184B CN 106772184 B CN106772184 B CN 106772184B CN 201710013939 A CN201710013939 A CN 201710013939A CN 106772184 B CN106772184 B CN 106772184B
- Authority
- CN
- China
- Prior art keywords
- ground fault
- disconnecting link
- fault simulation
- head end
- tail end
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The embodiment of the application provides a ground fault simulation device and a control method, which relate to the technical field of electric power and can simulate an instantaneous single-phase ground fault and a permanent single-phase ground fault of a wiring device on the premise of not affecting the normal operation of a power distribution network so as to conveniently detect a line selection device in the power distribution network. Comprising the following steps: the ground fault simulation device is configured into a first ground fault simulation mode and a second ground fault simulation mode, and when the time for conducting the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link is longer than the input time interval, the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link are disconnected. The application is used for simulating the ground fault.
Description
Technical Field
The application relates to the technical field of electric power, in particular to a ground fault simulation device and a control method.
Background
In the power system, the neutral point grounding mode of the power distribution network plays an extremely important role in the safety, reliability and economy of the power distribution network to a certain extent, wherein the influence on the insulation level of equipment in the power distribution network, the reliability of relay protection devices in the power distribution network, the performance of a communication system related to the power distribution network and the personal safety of power distribution network operators is large.
The main grounding modes of the current distribution network comprise grounding through an arc suppression coil, grounding through a small resistor, non-grounding, grounding through an intelligent fault processing device and the like. In order to enable the power distribution network to timely isolate fault points after the power distribution network has a grounding fault and ensure personal safety, corresponding line selection devices are required to be configured in the power distribution network when the grounding mode is used in the power distribution network. Because the types of the grounding modes are more, certain differences exist among the line selection devices configured in the power distribution network in different grounding modes, and because the reliability of a part of the line selection devices is lower, when the power distribution network has a grounding fault, the accuracy of the grounding device and the line selection devices to the action of the grounding fault is lower, so that fault isolation or fault processing cannot be performed in time, and the safety and the reliability of the power distribution network are reduced.
In general, in order to detect reliability of a line selection device configured in a power distribution network, after the line selection device in the power distribution network is configured, a single-phase ground fault of the power distribution network may be triggered multiple times, so as to detect accuracy of corresponding actions of the line selection device on the single-phase ground fault when the single-phase ground fault occurs in the power distribution network. However, the method cannot determine the accuracy of corresponding actions of the line selection device in the power distribution network aiming at the instantaneous single-phase earth fault when the power distribution network has the instantaneous single-phase earth fault, and the detection result can be obtained only after the power distribution network is triggered to generate the single-phase earth fault for many times, so that the cost of fault simulation is increased, the compatibility of fault simulation is reduced, and the user experience is damaged.
Disclosure of Invention
The application provides a ground fault simulation device and a control method, which can simulate an instantaneous single-phase ground fault and a permanent single-phase ground fault of a wiring device on the premise of not influencing the normal operation of a power distribution network so as to conveniently detect a line selection device in the power distribution network.
In a first aspect, an embodiment of the present application provides a ground fault simulation apparatus, including: the device comprises a ball gap, an isolation knife switch and a quick switch, wherein the head end of the ball gap is grounded, the tail end of the ball gap is connected with the head end of the isolation knife switch, the head end of the quick switch is connected with the head end of the ball gap, the tail end of the quick switch is connected with the head end of the ball gap, and the tail end of the isolation knife switch is connected with the test end of the ground fault simulation device; the ground fault simulation device is configured into a first ground fault simulation mode and a second ground fault simulation mode, wherein the first ground fault simulation mode is that the head end of the isolation disconnecting link is conducted with the tail end of the isolation disconnecting link, and the head end of the quick switch is disconnected with the tail end of the quick switch; the second ground fault simulation mode is that the head end of the isolation switch is conducted with the tail end of the isolation switch, and the head end of the fast switch is conducted with the tail end of the fast switch; when the time for conducting the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link is longer than the input time interval, the head end of the isolation disconnecting link is disconnected from the tail end of the isolation disconnecting link.
In a second aspect, an embodiment of the present application provides a control method of a ground fault simulation apparatus, including: when the ground fault simulation device is configured into a first ground fault simulation mode, the head end of the isolation disconnecting link is controlled to be conducted with the tail end of the isolation disconnecting link, and the head end of the fast switch is controlled to be disconnected with the tail end of the fast switch; when the ground fault simulation device is configured into a second ground fault simulation mode, the head end of the isolation switch is controlled to be conducted with the tail end of the isolation switch, and the head end of the fast switch is controlled to be conducted with the tail end of the fast switch; when the time for conducting the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link is longer than the input time interval, the head end of the isolation disconnecting link is controlled to be disconnected from the tail end of the isolation disconnecting link.
The embodiment of the application provides a ground fault simulation device and a control method, wherein the ground fault simulation device comprises a ball gap, an isolation disconnecting link and a fast switch, can simulate a transient ground fault and a permanent ground fault respectively generated by a line selection device connected with a test end of the ground fault simulation device, and can ensure that the line selection device does not carry out zero sequence overcurrent protection action due to the transient ground fault or the permanent ground fault generated by the simulated line selection device.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a ground fault simulation device according to an embodiment of the present application;
FIG. 2 is a schematic block diagram of a ground fault simulator according to another embodiment of the present application;
FIG. 3 is a schematic flow chart of a control method of a ground fault simulation device according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a control method of a ground fault simulation apparatus according to another embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order to clearly describe the technical solution of the embodiments of the present application, in the embodiments of the present application, the terms "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect, and those skilled in the art will understand that the terms "first", "second", etc. are not limited in number and execution order.
The main grounding modes of the current distribution network comprise grounding through an arc suppression coil, grounding through a small resistor, non-grounding, grounding through an intelligent fault processing device and the like. In order to enable the power distribution network to timely isolate fault points after the power distribution network has a grounding fault and ensure personal safety, corresponding line selection devices are required to be configured in the power distribution network when the grounding mode is used in the power distribution network. Because the types of grounding modes are more, certain differences exist among the line selection devices configured in the power distribution network in different grounding modes, and because the reliability of a part of the line selection devices is lower, for example, the problems that part of mutual inductors are reverse in polarity, are missed, have no induction signals and the like easily occur, when the power distribution network has a grounding fault, the accuracy of the grounding device and the line selection device to the action of the grounding fault is lower, so that fault isolation or fault processing cannot be performed in time, and the safety and the reliability of the power distribution network are reduced.
In general, in order to detect reliability of a line selection device configured in a power distribution network, after the line selection device in the power distribution network is configured, a single-phase ground fault of the power distribution network may be triggered multiple times, so as to detect accuracy of corresponding actions of the line selection device on the single-phase ground fault when the single-phase ground fault occurs in the power distribution network. However, on the one hand, the accuracy of corresponding actions of the line selection device in the power distribution network aiming at the instantaneous single-phase grounding fault can not be determined when the instantaneous single-phase grounding fault occurs in the power distribution network, and on the other hand, the detection result can be obtained after the power distribution network is triggered to generate the single-phase grounding fault for many times, so that the normal work of the power distribution network is interfered, and the user experience is damaged.
In order to solve the above problems, as shown in fig. 1, an embodiment of the present application provides a ground fault simulation apparatus 100, including: the ground fault simulation device comprises a ball gap G1, an isolation disconnecting link S1 and a quick switch S2, wherein the head end of the ball gap G1 is grounded GND, the tail end of the ball gap G1 is connected with the head end of the isolation disconnecting link S1, the head end of the quick switch S2 is connected with the head end of the ball gap G1, the tail end of the quick switch S2 is connected with the head end of the ball gap G1, and the tail end of the isolation disconnecting link S1 is connected with the test end 103 of the ground fault simulation device 100.
Specifically, the isolating switch S1 may include a switch, or may be formed by connecting a plurality of switches in series or in parallel. The fast switch S2 may include one switch, or may be formed by connecting a plurality of switches in series or in parallel.
The ground fault simulation device 100 is configured to a first ground fault simulation mode and a second ground fault simulation mode, wherein the first ground fault simulation mode is that the head end of the isolation switch S1 is conducted with the tail end of the isolation switch S1, and the head end of the fast switch S2 is disconnected with the tail end of the fast switch S2; the second ground fault simulation mode is that the head end of the isolation switch S1 is conducted with the tail end of the isolation switch S1, and the head end of the fast switch S2 is conducted with the tail end of the fast switch S2.
When the time that the head end of the isolation disconnecting link S1 is conducted with the tail end of the isolation disconnecting link S1 is longer than the input time interval, the head end of the isolation disconnecting link S1 is disconnected with the tail end of the isolation disconnecting link S1.
Specifically, when the ground fault simulation device 100 is configured in the first ground fault simulation mode, since the head end of the isolation knife switch S1 is turned on with the tail end of the isolation knife switch S1, the head end of the fast switch S2 is turned off with the tail end of the fast switch S2, and the line selection device 104 connected to the test end 103 may be grounded GND through the ball gap G1, that is, the simulated line selection device 104 has an instantaneous ground fault, and meanwhile, since the isolation knife switch S1 is turned off when the head end of the isolation knife switch S1 is turned on with the tail end of the isolation knife switch S1 is greater than the input time interval, the time of the instantaneous ground fault of the line selection device 104 is less than the time threshold of the zero sequence overcurrent protection action performed by the line selection device 104, that is, the zero sequence overcurrent protection action performed by the line selection device 104 is ensured not to be caused by the instantaneous ground fault of the simulated line selection device 104, so that the normal operation of the line selection device 104 is not disturbed by the occurrence of the instantaneous ground fault of the simulated line selection device 104 is ensured. When the ground fault simulation device 100 is configured in the second ground fault simulation mode, since the head end of the isolation switch S1 is conducted with the tail end of the isolation switch S1, the head end of the fast switch S2 is conducted with the tail end of the fast switch S2, and the line selection device 104 connected with the test end 103 can be directly grounded GND, i.e. the simulated line selection device 104 has a permanent ground fault, and meanwhile, since the isolation switch S1 is disconnected when the time that the head end of the isolation switch S1 is conducted with the tail end of the isolation switch S1 is greater than the input time interval, the time that the line selection device 104 has a permanent ground fault is less than the time threshold for performing the zero sequence overcurrent protection action by the line selection device 104, i.e. the zero sequence overcurrent protection action by the line selection device 104 is ensured not to be performed due to the permanent ground fault of the simulated line selection device 104, so that the normal operation of the line selection device 104 is not disturbed due to the transient ground fault of the simulated line selection device 104 is ensured.
It should be noted that, since the line selection device 104 is located in the power distribution network, when the test end 103 of the ground fault simulation device 100 is connected to the line selection device 104, the connection may be performed through the live access device, where the live access device may be an insulating rod or other insulating tools, so as to ensure that the ground fault simulation device 100 can be safely connected to the line selection device 104.
The embodiment of the application provides a ground fault simulation device which comprises a ball gap, an isolation knife switch and a fast switch, wherein the ground fault simulation device can simulate the transient ground fault and the permanent ground fault of a line selection device connected with a test end of the ground fault simulation device respectively, and ensure that the line selection device does not carry out zero sequence overcurrent protection action due to the transient ground fault or the permanent ground fault of the simulated line selection device.
As shown in fig. 2, the ground fault simulation apparatus 100 may further include a ground fault unit 102, where the ground fault unit 102 is located between the head end of the ball gap G1 and the ground, and the head end of the ground fault unit 102 is connected to the head end of the ball gap G1, and the tail end of the ground fault unit 102 is grounded.
The ground fault unit 102 is configured to simulate a head end of the ground fault unit 102 to be grounded in a ground fault mode through a tail end of the ground fault unit 102, where the ground fault mode includes a metallic ground mode, a transition resistance ground mode, a high resistance ground mode, and an arc ground mode.
Specifically, in order to enable the ground fault simulation apparatus 100 to simulate more types of ground fault modes, the ground fault unit 102 may be provided between the head end of the ball gap G1 and the ground GND.
Illustratively, when the ground fault unit 102 is configured to simulate the head end of the ground fault unit 102 being grounded in a transitional resistance ground mode through the tail end of the ground fault unit 102, and the ground fault simulation device 100 is configured to be in the first ground fault simulation mode, the ground fault simulation device 100 is capable of simulating the transient transitional resistance ground fault occurring in the line selection device 104 connected to the test terminal 103; when the ground fault unit 102 is configured to simulate the ground fault unit 102 that the head end of the ground fault unit 102 is grounded through the tail end of the ground fault unit 102 in the high-resistance ground mode, and the ground fault simulation device 100 is configured in the first ground fault simulation mode, the ground fault simulation device 100 is capable of simulating the transient high-resistance ground fault occurring in the line selection device 104 connected to the test terminal 103.
The ground fault unit 102 may be an existing ground fault device, as long as the ground fault device can simulate a ground fault including any of a metallic ground fault, a transition resistance ground fault, a high resistance ground fault, and an arc ground fault.
Specifically, as shown in fig. 2, the ground fault simulation device 100 further includes a ground switch S3, where a head end of the ground switch S3 is connected to a head end of the ball gap G1, and a tail end of the ground switch S3 is grounded GND.
Specifically, the grounding switch S3 may include a switch, or may be formed by connecting a plurality of switches in series or in parallel.
The first ground fault simulation mode further comprises that the head end of the ground knife switch S3 is disconnected from the tail end of the ground knife switch S3, and the second ground fault simulation mode further comprises that the head end of the ground knife switch S3 is disconnected from the tail end of the ground knife switch S3.
The ground fault simulation apparatus 100 is further configured to a third ground fault simulation mode, where the third ground fault simulation mode is that the head end of the ground switch S3 is conducted with the tail end of the ground switch S3.
Specifically, in order to ensure that a corresponding accident does not occur due to the misoperation of the isolation knife switch S1 when the ground fault simulation device 100 is not in use, the ground fault simulation device 100 may be configured in the third ground fault simulation mode when the ground fault simulation device 100 is not in use, i.e., the leading end of the ground knife switch S3 is conducted with the trailing end of the ground knife switch S3, so as to ensure that the leading end of the first switch S1 is grounded to GND. When the ground fault simulation device 100 is used, that is, when the ground fault simulation device 100 is configured in the first ground fault simulation mode and the second ground fault simulation mode, the head end of the ground knife switch S3 is disconnected from the tail end of the ground knife switch S3, so that the ground fault simulation device 100 can normally simulate the line selection device 104 to generate a corresponding ground fault.
Further, the third ground fault simulation mode further includes that the head end of the isolation switch S1 is disconnected from the tail end of the isolation switch S1, and the head end of the fast switch S2 is disconnected from the tail end of the fast switch S2, so as to further ensure that the ground fault simulation device 100 cannot have a misoperation accident.
Further, the ground fault simulation device 100 further includes a remote control unit 105, where the control end of the remote control unit 105 is connected to the control end of the isolation switch S1, the control end of the fast switch S2, and the control end of the ground switch S3, respectively.
A remote control unit 105 configured to:
when a transient fault simulation command is received, the head end of the isolation disconnecting link S1 is conducted with the tail end of the isolation disconnecting link S1 through the control end of the isolation disconnecting link S1, the head end of the fast switch S2 is disconnected with the tail end of the fast switch S2 through the control end of the fast switch S2, and the head end of the grounding disconnecting link S3 is disconnected with the tail end of the fast switch S2 through the control end of the grounding disconnecting link S3.
When a permanent fault simulation command is received, the control end of the isolation disconnecting link S1 is conducted with the tail end of the isolation disconnecting link S1, the control end of the fast switch S2 is conducted with the tail end of the fast switch S2, and the control end of the grounding disconnecting link S3 is disconnected with the tail end of the fast switch S2.
When an idle command is received, the control end of the isolation disconnecting link S1 is disconnected from the tail end of the isolation disconnecting link S1, the control end of the fast switch S2 is disconnected from the tail end of the fast switch S2, and the control end of the grounding disconnecting link S3 is connected with the tail end of the fast switch S2.
Specifically, through the above steps, remote control of the ground fault simulation apparatus 100 can be realized, wherein when the ground fault simulation apparatus 100 is instructed by transient fault simulation, the line selection apparatus 104 connected to the test terminal 103 can be simulated to generate transient ground faults; when the ground fault simulation device 100 receives the permanent fault simulation command, it can simulate that the line selection device 104 connected with the test terminal 103 has a permanent ground fault; when the ground fault simulation apparatus 100 receives the idle command, it can be ensured that the ground fault simulation apparatus 100 does not have a corresponding accident due to the malfunction.
As shown in fig. 3, an embodiment of the present application provides a control method of a ground fault simulation apparatus, including:
201. a ground fault simulation mode in which the ground fault simulation device is configured is determined.
When the ground fault simulation apparatus is configured in the first ground fault simulation mode, performing step 202; when the ground fault simulation apparatus is configured in the second ground fault simulation mode, step 203 is performed.
202. The head end of the isolation switch is controlled to be conducted with the tail end of the isolation switch, and the head end of the quick switch is controlled to be disconnected with the tail end of the quick switch.
203. The head end of the isolation switch is controlled to be conducted with the tail end of the isolation switch, and the head end of the fast switch is controlled to be conducted with the tail end of the fast switch.
204. When the time for conducting the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link is longer than the input time interval, the head end of the isolation disconnecting link is controlled to be disconnected from the tail end of the isolation disconnecting link.
Specifically, when the ground fault simulation device 100 is configured in the first ground fault simulation mode, since the head end of the isolation knife switch S1 is turned on with the tail end of the isolation knife switch S1, the head end of the fast switch S2 is turned off with the tail end of the fast switch S2, and the line selection device 104 connected to the test end 103 may be grounded GND through the ball gap G1, that is, the simulated line selection device 104 has an instantaneous ground fault, and meanwhile, since the isolation knife switch S1 is turned off when the head end of the isolation knife switch S1 is turned on with the tail end of the isolation knife switch S1 is greater than the input time interval, the time of the instantaneous ground fault of the line selection device 104 is less than the time threshold of the zero sequence overcurrent protection action performed by the line selection device 104, that is, the zero sequence overcurrent protection action performed by the line selection device 104 is ensured not to be caused by the instantaneous ground fault of the simulated line selection device 104, so that the normal operation of the line selection device 104 is not disturbed by the occurrence of the instantaneous ground fault of the simulated line selection device 104 is ensured. When the ground fault simulation device 100 is configured in the second ground fault simulation mode, since the head end of the isolation switch S1 is conducted with the tail end of the isolation switch S1, the head end of the fast switch S2 is conducted with the tail end of the fast switch S2, and the line selection device 104 connected with the test end 103 can be directly grounded GND, i.e. the simulated line selection device 104 has a permanent ground fault, and meanwhile, since the isolation switch S1 is disconnected when the time that the head end of the isolation switch S1 is conducted with the tail end of the isolation switch S1 is greater than the input time interval, the time that the line selection device 104 has a permanent ground fault is less than the time threshold for performing the zero sequence overcurrent protection action by the line selection device 104, i.e. the zero sequence overcurrent protection action by the line selection device 104 is ensured not to be performed due to the permanent ground fault of the simulated line selection device 104, so that the normal operation of the line selection device 104 is not disturbed due to the transient ground fault of the simulated line selection device 104 is ensured.
It should be noted that, since the line selection device 104 is located in the power distribution network, when the test end 103 of the ground fault simulation device 100 is connected to the line selection device 104, the connection may be performed through the live access device, where the live access device may be an insulating rod or other insulating tools, so as to ensure that the ground fault simulation device 100 can be safely connected to the line selection device 104.
The embodiment of the application provides a ground fault simulation method, which can simulate the transient ground fault and the permanent ground fault of a line selection device connected with a test end of a ground fault simulation device respectively, and ensure that the line selection device does not carry out zero sequence overcurrent protection action due to the transient ground fault or the permanent ground fault of the simulated line selection device.
Specifically, as shown in fig. 4, the control method of the ground fault simulation apparatus provided by the embodiment of the present application further includes:
205. and acquiring a grounding mode, and controlling the grounding fault unit to simulate the head end of the grounding fault unit to be grounded in the grounding fault mode through the tail end of the grounding fault unit, wherein the grounding fault mode comprises a metallic grounding mode, a transitional resistance grounding mode, a high-resistance grounding mode and an arc grounding mode.
Specifically, in order to enable the ground fault simulation apparatus 100 to simulate more types of ground fault modes, the ground fault unit 102 may be provided between the head end of the ball gap G1 and the ground GND.
Illustratively, when the ground fault unit 102 is configured to simulate the head end of the ground fault unit 102 being grounded in a transitional resistance ground mode through the tail end of the ground fault unit 102, and the ground fault simulation device 100 is configured to be in the first ground fault simulation mode, the ground fault simulation device 100 is capable of simulating the transient transitional resistance ground fault occurring in the line selection device 104 connected to the test terminal 103; when the ground fault unit 102 is configured to simulate the ground fault unit 102 that the head end of the ground fault unit 102 is grounded through the tail end of the ground fault unit 102 in the high-resistance ground mode, and the ground fault simulation device 100 is configured in the first ground fault simulation mode, the ground fault simulation device 100 is capable of simulating the transient high-resistance ground fault occurring in the line selection device 104 connected to the test terminal 103.
The ground fault unit 102 may be an existing ground fault device, as long as the ground fault device can simulate a ground fault including any of a metallic ground fault, a transition resistance ground fault, a high resistance ground fault, and an arc ground fault.
Specifically, as shown in fig. 4, the control method of the ground fault simulation apparatus provided by the embodiment of the present application further includes:
206. the head end of the control grounding switch is disconnected with the tail end of the grounding switch.
207. When the ground fault simulation device is configured in the third ground fault simulation mode, the head end of the ground switch is controlled to be conducted with the tail end of the ground switch.
Specifically, in order to ensure that a corresponding accident does not occur due to the misoperation of the isolation knife switch S1 when the ground fault simulation device 100 is not in use, the ground fault simulation device 100 may be configured in the third ground fault simulation mode when the ground fault simulation device 100 is not in use, i.e., the leading end of the ground knife switch S3 is conducted with the trailing end of the ground knife switch S3, so as to ensure that the leading end of the first switch S1 is grounded to GND. When the ground fault simulation device 100 is used, that is, when the ground fault simulation device 100 is configured in the first ground fault simulation mode and the second ground fault simulation mode, the head end of the ground knife switch S3 is disconnected from the tail end of the ground knife switch S3, so that the ground fault simulation device 100 can normally simulate the line selection device 104 to generate a corresponding ground fault.
Further, the third ground fault simulation mode further includes that the head end of the isolation switch S1 is disconnected from the tail end of the isolation switch S1, and the head end of the fast switch S2 is disconnected from the tail end of the fast switch S2, so as to further ensure that the ground fault simulation device 100 cannot have a misoperation accident.
Specifically, as shown in fig. 4, the control method of the ground fault simulation apparatus provided by the embodiment of the present application further includes:
208. when the remote control unit receives the transient fault simulation command, the remote control unit is controlled to conduct the head end of the isolation disconnecting link with the tail end of the isolation disconnecting link through the control end of the isolation disconnecting link, disconnect the head end of the quick switch from the tail end of the quick switch through the control end of the quick switch, and disconnect the head end of the grounding disconnecting link from the tail end of the quick switch through the control end of the grounding disconnecting link.
209. When the remote control unit receives the permanent fault simulation command, the remote control unit is controlled to conduct the head end of the isolation disconnecting link with the tail end of the isolation disconnecting link through the control end of the isolation disconnecting link, conduct the head end of the quick switch with the tail end of the quick switch through the control end of the quick switch, and disconnect the head end of the grounding disconnecting link from the tail end of the quick switch through the control end of the grounding disconnecting link.
210. When the remote control unit receives the idle command, the remote control unit is controlled to disconnect the head end of the isolation disconnecting link from the tail end of the isolation disconnecting link through the control end of the isolation disconnecting link, disconnect the head end of the quick switch from the tail end of the quick switch through the control end of the quick switch, and connect the head end of the grounding disconnecting link with the tail end of the quick switch through the control end of the grounding disconnecting link.
Specifically, through the above steps, remote control of the ground fault simulation apparatus 100 can be realized, wherein when the ground fault simulation apparatus 100 is instructed by transient fault simulation, the line selection apparatus 104 connected to the test terminal 103 can be simulated to generate transient ground faults; when the ground fault simulation device 100 receives the permanent fault simulation command, it can simulate that the line selection device 104 connected with the test terminal 103 has a permanent ground fault; when the ground fault simulation apparatus 100 receives the idle command, it can be ensured that the ground fault simulation apparatus 100 does not have a corresponding accident due to the malfunction.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (5)
1. A control method of a ground fault simulation apparatus, comprising:
the ground fault simulation apparatus includes: the device comprises a ball gap, an isolation disconnecting link and a quick switch, wherein the head end of the ball gap is grounded, the tail end of the ball gap is connected with the head end of the isolation disconnecting link, the head end of the quick switch is connected with the head end of the ball gap, the tail end of the quick switch is connected with the head end of the ball gap, and the tail end of the isolation disconnecting link is connected with the test end of the ground fault simulation device;
the ground fault simulation device is configured into a first ground fault simulation mode and a second ground fault simulation mode, the first ground fault simulation mode is that the head end of the isolation disconnecting link is conducted with the tail end of the isolation disconnecting link, and the head end of the fast switch is disconnected with the tail end of the fast switch; the second ground fault simulation mode is that the head end of the isolation switch is conducted with the tail end of the isolation switch, and the head end of the fast switch is conducted with the tail end of the fast switch;
when the time for conducting the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link is longer than the input time interval, the head end of the isolation disconnecting link is disconnected from the tail end of the isolation disconnecting link;
when the ground fault simulation device is configured into a first ground fault simulation mode, controlling the head end of an isolation disconnecting link to be conducted with the tail end of the isolation disconnecting link, and controlling the head end of a fast switch to be disconnected with the tail end of the fast switch;
when the ground fault simulation device is configured into a second ground fault simulation mode, controlling the head end of the isolation disconnecting link to be conducted with the tail end of the isolation disconnecting link, and controlling the head end of the fast switch to be conducted with the tail end of the fast switch;
when the time for conducting the head end of the isolation disconnecting link and the tail end of the isolation disconnecting link is longer than the input time interval, the head end of the isolation disconnecting link is controlled to be disconnected with the tail end of the isolation disconnecting link.
2. The method for controlling a ground fault simulation apparatus according to claim 1, further comprising:
and acquiring a grounding mode, and controlling a grounding fault unit to simulate the head end of the grounding fault unit to be grounded in the grounding fault mode through the tail end of the grounding fault unit, wherein the grounding fault mode comprises any one mode selected from a metallic grounding mode, a transitional resistance grounding mode, a high-resistance grounding mode and an arc grounding mode.
3. The method for controlling a ground fault simulation apparatus according to claim 1, further comprising:
when the ground fault simulation device is configured into a first ground fault simulation mode, the head end of the ground disconnecting link is controlled to be disconnected with the tail end of the ground disconnecting link;
when the ground fault simulation device is configured into a second ground fault simulation mode, the head end of the ground disconnecting link is controlled to be disconnected with the tail end of the ground disconnecting link;
when the ground fault simulation device is configured into a third ground fault simulation mode, the head end of the ground knife switch is controlled to be conducted with the tail end of the ground knife switch.
4. A control method of a ground fault simulation apparatus according to claim 3, characterized in that the method further comprises:
when the ground fault simulation device is configured into a third ground fault simulation mode, the head end of the isolation disconnecting link is controlled to be disconnected with the tail end of the isolation disconnecting link, and the head end of the quick switch is controlled to be disconnected with the tail end of the quick switch.
5. The control method of the ground fault simulation apparatus according to claim 3 or 4, characterized in that the method further comprises:
when a remote control unit receives an instantaneous fault simulation command, the remote control unit is controlled to conduct the head end of the isolation disconnecting link with the tail end of the isolation disconnecting link through the control end of the isolation disconnecting link, disconnect the head end of the fast switch from the tail end of the fast switch through the control end of the fast switch, and disconnect the head end of the grounding disconnecting link from the tail end of the fast switch through the control end of the grounding disconnecting link;
when the remote control unit receives a permanent fault simulation command, the remote control unit is controlled to conduct the head end of the isolation disconnecting link with the tail end of the isolation disconnecting link through the control end of the isolation disconnecting link, conduct the head end of the quick switch with the tail end of the quick switch through the control end of the quick switch, and disconnect the head end of the grounding disconnecting link with the tail end of the quick switch through the control end of the grounding disconnecting link;
when the remote control unit receives an idle command, the remote control unit is controlled to disconnect the head end of the isolation disconnecting link from the tail end of the isolation disconnecting link through the control end of the isolation disconnecting link, disconnect the head end of the quick switch from the tail end of the quick switch through the control end of the quick switch, and connect the head end of the grounding disconnecting link with the tail end of the quick switch through the control end of the grounding disconnecting link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710013939.5A CN106772184B (en) | 2017-01-09 | 2017-01-09 | Ground fault simulation device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710013939.5A CN106772184B (en) | 2017-01-09 | 2017-01-09 | Ground fault simulation device and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106772184A CN106772184A (en) | 2017-05-31 |
| CN106772184B true CN106772184B (en) | 2023-09-15 |
Family
ID=58948289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710013939.5A Active CN106772184B (en) | 2017-01-09 | 2017-01-09 | Ground fault simulation device and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106772184B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169602A (en) * | 2018-01-22 | 2018-06-15 | 北京丹华昊博电力科技有限公司 | A kind of distribution network failure simulator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315550Y (en) * | 2008-12-19 | 2009-09-23 | 东北农业大学 | High pressure impulse generator based on triple-pole ignition switch |
| CN104732847A (en) * | 2015-01-14 | 2015-06-24 | 广东电网有限责任公司电力科学研究院 | Electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform |
| CN104914391A (en) * | 2015-05-05 | 2015-09-16 | 国家电网公司 | Distribution network single-phase grounding fault simulation and positioning performance test platform and method |
| CN105445511A (en) * | 2015-12-11 | 2016-03-30 | 国家电网公司 | Singlephase earth fault signal generating device and method for simulation isolated neutral system |
| CN106093668A (en) * | 2016-08-15 | 2016-11-09 | 国家电网公司 | A kind of distribution network failure analog and method |
| CN206362917U (en) * | 2017-01-09 | 2017-07-28 | 南方电网科学研究院有限责任公司 | A kind of earth fault analogue means |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0718911D0 (en) * | 2007-09-28 | 2007-11-07 | Chilvers Graham | Power isolator |
-
2017
- 2017-01-09 CN CN201710013939.5A patent/CN106772184B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315550Y (en) * | 2008-12-19 | 2009-09-23 | 东北农业大学 | High pressure impulse generator based on triple-pole ignition switch |
| CN104732847A (en) * | 2015-01-14 | 2015-06-24 | 广东电网有限责任公司电力科学研究院 | Electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform |
| CN104914391A (en) * | 2015-05-05 | 2015-09-16 | 国家电网公司 | Distribution network single-phase grounding fault simulation and positioning performance test platform and method |
| CN105445511A (en) * | 2015-12-11 | 2016-03-30 | 国家电网公司 | Singlephase earth fault signal generating device and method for simulation isolated neutral system |
| CN106093668A (en) * | 2016-08-15 | 2016-11-09 | 国家电网公司 | A kind of distribution network failure analog and method |
| CN206362917U (en) * | 2017-01-09 | 2017-07-28 | 南方电网科学研究院有限责任公司 | A kind of earth fault analogue means |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106772184A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10148080B2 (en) | Single-phase-to-earth fault processing device and method for neutral non-effectively grounded distribution network | |
| Vitins | A fundamental concept for high speed relaying | |
| US9310870B2 (en) | Network appliance with power conditioning | |
| US8953288B2 (en) | Sentinel unit for an IT electrical distribution system having a floating reference conductor | |
| CN110190591B (en) | Automatic processing method and system for single-phase earth fault | |
| CN106066450A (en) | There is the insulation monitor of voltage monitoring and method based on it | |
| CN110879330B (en) | Power distribution network single-phase earth fault development situation discrimination method based on zero sequence volt-ampere curve area | |
| CN103837798B (en) | The quick diagnosis device of one-phase earthing failure in electric distribution network character | |
| CN109428315A (en) | Self-adaptive protection method, device and system | |
| CN106772184B (en) | Ground fault simulation device and control method | |
| CN110324067B (en) | Power line communication fault detection circuit and detection device | |
| WO2004008600A3 (en) | Electrical network protection system | |
| Hasan et al. | A simulation testbed for cascade analysis | |
| CN105375436A (en) | Automatic cutoff protection apparatus and method for overtime operation of neutral-point resistor cabinet | |
| CN106329504A (en) | Backup protection circuit breaker of surge protector and application method of backup protection circuit breaker | |
| CN206362917U (en) | A kind of earth fault analogue means | |
| CN102520303A (en) | Detector and detection method for alternating-current loops of wind generation set | |
| CN105823969A (en) | Apparatus for simulating partial discharge detects of transformer | |
| CN205921371U (en) | Disconnected zero lacks looks protection device and power system fault positioner | |
| CN113030636B (en) | Active intervention type arc suppression device test system | |
| CN104749486A (en) | Residual current protector based IT system single-phase fault positioning method | |
| CN102403700A (en) | High-voltage switch control terminal grounding protection method | |
| CN105911413A (en) | Elimination method for hidden dangers in transformer line fault | |
| CN110046443B (en) | Low-current ground fault line selection evaluation method and system | |
| KR100532925B1 (en) | Detection techniques of line-to-earth fault section in ungrounded network base on distribution automation |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |