CN114252729A - Power distribution network fault detection and elimination method - Google Patents
Power distribution network fault detection and elimination method Download PDFInfo
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- CN114252729A CN114252729A CN202111446294.7A CN202111446294A CN114252729A CN 114252729 A CN114252729 A CN 114252729A CN 202111446294 A CN202111446294 A CN 202111446294A CN 114252729 A CN114252729 A CN 114252729A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 9
- 230000008030 elimination Effects 0.000 title claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 230000001012 protector Effects 0.000 claims abstract description 24
- 230000002159 abnormal effect Effects 0.000 claims abstract description 16
- 238000004458 analytical method Methods 0.000 claims description 40
- 238000012544 monitoring process Methods 0.000 claims description 14
- 230000005856 abnormality Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 4
- 238000009795 derivation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses a power distribution network fault detection and elimination method, and particularly relates to the field of power transmission. The PLC control system can judge whether the current closed by the leakage protector is an abnormal circuit breaking path or not, judge whether the current closed by the manual power-off switch is a normal power-off path, realize automatic control and manual interference control on power-off of the power consumption unit module through the leakage protector and the manual power-off switch, and complete the first step of control on current transmission.
Description
Technical Field
The invention relates to the technical field of power transmission, in particular to a power distribution network fault detection and elimination method.
Background
The electric energy transmission refers to a mode of transmitting electric energy from one place to another place by a power plant or a power supply, because the electric energy transmission in the early technology is immature, direct current transmission is adopted, and then alternating current transmission gradually develops in the later period, so that the alternating current transmission has many advantages, the loss in the electric energy transmission is reduced, the speed and the transmission length are improved, but certain loss still exists, and the more appropriate electric energy transmission mode can appear after the technology is mature.
In the prior art, a power distribution network fault detection and elimination method can detect and eliminate a power distribution network fault, can find out the reason of the power distribution network fault in the elimination process, and is beneficial to timely maintaining a power transmission mechanism in the power distribution network, but natural disasters frequently occur in some areas in summer, a transformer in the power distribution network system can be destroyed under the invasion of flood and debris flow, and the disaster relief time can be delayed by one-by-one elimination of the faults, so that the disaster situation of the areas is more serious.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a power distribution network fault detection and elimination method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a distribution network fault detection gets rid of method, includes electric wire netting control system and information transmission system, electric wire netting control system includes retrieval module and execution switching-on and switching-off, the retrieval module includes ID inquiry and GPS location inquiry, the output end signal of retrieval module is connected with distribution transformer, distribution transformer includes current sensor, distribution transformer's output electric connection has power consumption unit module, power consumption unit module electric connection has earth-leakage protector and artifical outage switch respectively, the equal electric connection of output of earth-leakage protector's output and artifical outage switch has PLC control system, PLC control system's output difference signal connection has fault analysis system and data processing system.
By adopting the technical scheme: distribution transformer has ID inquiry and GPS location inquiry function, and the retrieval module is the operation page that the client has, and the client can retrieve distribution transformer, and earth-leakage protector and artifical power off switch realize controlling with artificial interference the automation of power consumption unit module outage.
Preferably, the output end of the data processing system is in signal connection with the input end of the information transmission system, the information transmission system comprises a data export system, the data export system further comprises character display, picture display and monitoring video export, and the output end of the data export system is in signal connection with a client.
By adopting the technical scheme: the data processing system can process and classify data transmitted by the PLC control system and the fault analysis system, converts the data into character display, picture display and monitoring video export in the data export system, and feeds the data back to a manager through a display screen of the client.
Preferably, the output end of the client is in signal connection with the input end of the execution tripping and closing switch, and the output end of the execution switching and closing switch is in signal connection with the input end of the distribution transformer.
By adopting the technical scheme: the client can directly utilize the execution blending gate to control power transmission to the distribution transformer.
Preferably, the output end of the power utilization unit module is electrically connected with an SCADA control system, and the output end of the SCADA control system is in signal connection with a data processing system.
By adopting the technical scheme: when the power distribution transformer is powered off by the tripping and closing of the client, the power utilization unit module can reflect data to the SCADA control system, the current sensor analyzes the received current, and finally transmits the data to the inside of the data processing system, and the data processing system transmits the data to the inside of the information transmission system.
Preferably, the grid control system and the information transmission system further include a fault analysis stage and an information transmission stage, and the fault analysis stage includes:
s1, firstly, through the retrieval module, ID query is carried out on the ID of the distribution transformer input at the retrieval input end, or query can be carried out on the distribution transformer through GPS positioning query, a current sensor arranged in the distribution transformer can carry out current detection on each distribution transformer, and after the current detection is normal, the current is transmitted to the power consumption unit module;
s2, when the current abnormality occurs in the power utilization unit module, the leakage protector can be used for automatically powering off, and the manual power-off switch can be used for powering off;
and S3, analyzing the received data by the PLC control system, and judging whether the current closed by the leakage protector is an abnormal circuit breaking path or not by the PLC control system and whether the current closed by the manual power-off switch is a normal circuit breaking path or not by the PLC control system.
By adopting the technical scheme: the leakage protector and the manual power-off switch realize automatic control and manual interference control of power-off of the power consumption unit module, and control of current in the first step is completed.
The information delivery phase comprises:
s4, firstly, receiving the processing data of the data processing system, wherein the data export system can transmit the data processed by the data processing system to the client in three modes of character display, picture display and monitoring video export;
and S5, the client can derive three data templates for displaying text display, picture display and monitoring video for managers and control the service condition of the power grid control system in real time.
By adopting the technical scheme: the normal circuit breaking path and the abnormal circuit breaking path are distinguished, and automatic management and manual intervention can be performed.
Preferably, when the power is abnormally cut off in step S3 in the fault analysis phase;
s3.1, the PLC control system transmits data of an abnormal power-off path to a fault analysis system, the fault analysis system analyzes power-off data to reach a value capable of stopping power-off, and the execution tripping and closing device sends an instruction to the distribution transformer so that the distribution transformer stops supplying power to the power utilization unit module;
s3.2, the fault analysis system retrieves and analyzes the outage data, and simultaneously transmits the data to the interior of the data processing system through an instruction, and the data processing system analyzes the data;
and S3.3, finally, the PLC control system directly transmits the data of the normal power-off path to the interior of the data processing system, and the data processing system analyzes the data.
By adopting the technical scheme: the power-off operation of the distribution transformer is realized through the fault analysis system and the client switch, and then the second automatic control and the manual interference control of the power-off of the power utilization unit module are controlled.
Preferably, when the power is normally cut off in step S3 in the fault analysis phase;
and S3.4, finally, the PLC control system directly transmits the data of the normal power-off path to the interior of the data processing system, and the data processing system analyzes the data.
Preferably, in the fault analysis stage, when the value for stopping power outage is not reached:
s3.1.1, the failure analysis system penetrates the value into the data processing system, the data processing system imports the data into the information transmission system;
s3.1.2, the data export system in the information transmission system transmits data to the client, the client sends out an instruction to control and execute the tripping and closing switch and send the instruction to the distribution transformer, so that the distribution transformer stops supplying power to the power utilization unit module.
By adopting the technical scheme: when the numerical value which can stop power failure is not reached in the fault analysis stage, the data processing system can reflect the data to the client, and a manager can manually judge the power utilization condition.
The invention has the beneficial effects that:
when the power consumption monitoring system is used, three-step control can be carried out on current transmission, the first step is realized, the fact that the current closed by the leakage protector is an abnormal circuit breaking path can be judged in a PLC control system, the current closed by the manual power-off switch is a normal circuit breaking path, automatic control and manual interference control of power consumption unit module power failure are realized through the leakage protector and the manual power-off switch, the first step of control over current transmission is completed, the second step is realized, the normal circuit breaking path and the abnormal circuit breaking path are distinguished through the PLC control system, automatic management and manual interference can be carried out, the second step of control over current transmission is completed, the third step is realized, when the numerical value capable of stopping power failure is not reached in a fault analysis stage, the data processing system can reflect data to a client side, and managers can judge the power consumption condition manually.
Drawings
FIG. 1 is a schematic flow chart of the system 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.
The utility model provides a distribution network fault detection gets rid of method, including electric wire netting control system and information transmission system, electric wire netting control system includes retrieval module and execution switching-on and switching-off, retrieval module includes ID inquiry and GPS location inquiry, the output end signal connection of retrieval module has distribution transformer, distribution transformer includes current sensor, distribution transformer's output electric connection has power consumption unit module, power consumption unit module electric connection has earth-leakage protector and artifical outage switch respectively, the equal electric connection of output of earth-leakage protector's output and artifical outage switch has PLC control system, PLC control system's output difference signal connection has fault analysis system and data processing system.
In the embodiment, the retrieval module of the client is firstly opened, the ID query and GPS positioning query functions are realized through the distribution transformer, the retrieval module is an operation page carried by the client, the client can retrieve the distribution transformer, the leakage protector and the manual power-off switch realize automatic control and manual interference control on power-off of the power consumption unit module, and the data processing system performs centralized processing on the data and feeds the data back to the client.
Example 2
Referring to fig. 1, the output end of the data processing system is in signal connection with the input end of the information transmission system, the information transmission system comprises a data export system, the data export system comprises character display, picture display and monitoring video export, and the output end of the data export system is in signal connection with a client.
In this embodiment, the data transmitted by the PLC control system and the fault analysis system may be processed and classified by the data processing system, and converted into text display, picture display, and surveillance video export in the data export system, and fed back to the administrator through the display screen of the client.
Example 3
Referring to fig. 1, the output end of the client is in signal connection with the input end of the execution tripping and closing switch, the output end of the execution switching and closing switch is in signal connection with the input end of the distribution transformer, the output end of the power consumption unit module is electrically connected with an SCADA control system, and the output end of the SCADA control system is in signal connection with a data processing system.
In this embodiment, the client can directly utilize the execution blending gate to control power transmission for the distribution transformer, when the execution tripping and closing of the client cuts off the power of the distribution transformer, the power consumption unit module can reflect the data to the SCADA control system, the current sensor analyzes the received current, and finally transmits the data to the inside of the data processing system, and the data processing system transmits the data to the inside of the information transmission system.
Example 4
Referring to fig. 1, the grid control system and the information delivery system further include a fault analysis stage and an information delivery stage, the fault analysis stage including:
s1, firstly, through a retrieval module, ID inquiry is carried out on the ID of the distribution transformer input at a retrieval input end, or inquiry can be carried out on the distribution transformer through GPS positioning inquiry, a current sensor arranged in the distribution transformer can carry out current detection on each distribution transformer, and current is transmitted to a power consumption unit module after the current detection is normal;
s2, when the current abnormality occurs in the power utilization unit module, the power can be automatically cut off through the leakage protector or can be cut off through the manual power-off switch;
s3, analyzing the received data by the PLC control system, and judging whether the current is closed by the leakage protector is an abnormal circuit breaking path or not and whether the current is closed by the manual power-off switch is a normal power-off path or not by the PLC control system;
when the power is abnormally cut off:
s3.1, the PLC control system transmits data of the abnormal power-off path to a fault analysis system, the fault analysis system analyzes the power-off data to reach a value capable of stopping power-off, and an instruction is sent to the distribution transformer by executing tripping and closing so that the distribution transformer stops supplying power to the power utilization unit module;
and when the numerical value which can stop power failure is not reached in the fault analysis stage:
s3.1.1, the fault analysis system penetrates the value into the data processing system, and the data processing system imports the data into the information transmission system;
s3.1.2, the data export system in the information transmission system transmits data to the client, the client sends out an instruction to control the execution of the tripping and closing switch and sends the instruction to the distribution transformer, so that the distribution transformer stops supplying power to the power unit module
S3.2, the fault analysis system transmits the data to the interior of the data processing system through an instruction while retrieving and analyzing the outage data, and the data processing system analyzes the data;
s3.3, finally, the PLC control system directly transmits the data of the normal power-off path to the interior of the data processing system, and the data processing system analyzes the data;
when power is normally off in step S3 in the failure analysis phase:
and S3.4, finally, the PLC control system directly transmits the data of the normal power-off path to the interior of the data processing system, and the data processing system analyzes the data.
In this embodiment, realize controlling and controlling with artificial interference the automation of power consumption unit module outage through earth-leakage protector and artifical outage switch, accomplish the first step and control the electric current.
Example 5
Referring to fig. 1, the information delivery phase includes:
s4, firstly, receiving the processing data of the data processing system, and the data export system can transmit the data processed by the data processing system to the client in three modes of character display, picture display and monitoring video export;
s5, the client can derive three data templates for the manager to display text display, picture display and monitoring video, and control the use condition of the power grid control system in real time;
in this embodiment, normal power-off paths and abnormal power-off paths are distinguished through the PLC control system, so that automatic management and manual intervention can be performed, when a power-off stopping value is not reached in a fault analysis stage, the data processing system can reflect data to a client, and a manager can manually judge power utilization conditions.
The working principle is as follows: when the invention is used, the distribution transformer has ID inquiry and GPS positioning inquiry functions, the retrieval module is an operation page carried by a client, the client can retrieve the distribution transformer, the ID of the distribution transformer is input at the retrieval input end for ID inquiry, the distribution transformer can also be queried through GPS positioning inquiry, a current sensor arranged in the distribution transformer can detect the current of each distribution transformer, the current is transmitted to the electricity consumption unit module after the current detection is normal, the leakage protector and the manual power-off switch realize the automatic control and manual interference control of the power-off of the electricity consumption unit module, the data transmitted by the PLC control system and the fault analysis system can be processed and classified by the data processing system, and the data is converted into character display, picture display and monitoring video export in the data export system, the data is transmitted to the SCADA control system by the power consumption unit module, the current sensor analyzes the received current and finally transmits the data to the data processing system, the data processing system transmits the data to the information transmission system, the power consumption unit module can automatically cut off the power by the leakage protector or can cut off the power by the manual power-off switch under the condition that the power consumption is abnormal by using the current, the PLC control system analyzes the received data, the PLC control system can judge whether the current closed by the leakage protector is an abnormal power-off path or a normal power-off path, the automatic control and the artificial interference control of the power failure of the power consumption unit module are realized through the leakage protector and the manual power failure switch, the control of current transmission in the first step is completed, the processing data of the data processing system is received firstly, the data processed by the data processing system can be transmitted to a client by three modes of character display, picture display and monitoring video derivation by the data derivation system, the client can present three data templates of character display, picture display and monitoring video derivation for managers, the service condition of the power grid control system is mastered in real time, the PLC control system transmits the data of an abnormal power failure path to the fault analysis system, the fault analysis system analyzes the power failure data to reach the value capable of stopping the power failure, the execution tripping and closing instruction is sent to the power distribution transformer, so that the power distribution transformer stops supplying power to the power consumption unit module, the fault analysis system searches and analyzes outage data, transmits the data to the inside of the data processing system through an instruction, the data processing system analyzes the data, the PLC control system directly transmits the data of a normal outage path to the inside of the data processing system, the data processing system analyzes the data, the data export system in the information transmission system transmits the data to a client, the client sends an instruction to control and execute a tripping and closing switch and transmits the instruction to the distribution transformer, so that the distribution transformer stops supplying power to the power utilization unit module, the normal outage path and the abnormal outage path are distinguished through the PLC control system, automatic management and manual interference can be achieved, the second step of control over current transmission is completed, and when the value capable of stopping outage is not reached in a fault analysis stage, the data can be reflected to the client, and a manager artificially judges the power utilization condition to complete the third step of current transmission.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A power distribution network fault detection and elimination method is characterized by comprising the following steps: including electric wire netting control system and information transmission system, electric wire netting control system includes retrieval module and execution switching-on and switching-off, the retrieval module includes ID inquiry and GPS location inquiry, the output end signal connection of retrieval module has distribution transformer, distribution transformer includes current sensor, distribution transformer's output electric connection has power consumption unit module, power consumption unit module electric connection has earth-leakage protector and artifical outage switch respectively, earth-leakage protector's the output and the equal electric connection of the output of artifical outage switch have PLC control system, PLC control system's output difference signal connection has fault analysis system and data processing system.
2. The method for detecting and eliminating the faults of the power distribution network according to claim 1, wherein the method comprises the following steps: the output end of the data processing system is in signal connection with the input end of the information transmission system, the information transmission system comprises a data export system, the data export system comprises character display, picture display and monitoring video export, and the output end of the data export system is in signal connection with a client.
3. The method for detecting and eliminating the faults of the power distribution network according to claim 2, wherein the method comprises the following steps: the output end of the client is in signal connection with the input end of the execution tripping and closing switch, and the output end of the execution switching and closing switch is in signal connection with the input end of the distribution transformer.
4. The method for detecting and eliminating the faults of the power distribution network according to claim 1, wherein the method comprises the following steps: the output end of the power utilization unit module is electrically connected with an SCADA control system, and the output end of the SCADA control system is connected with a data processing system in a signal mode.
5. The method for detecting and eliminating the faults of the power distribution network according to claim 1, wherein the method comprises the following steps: the power grid control system and the information transmission system further comprise a fault analysis stage and an information transmission stage, wherein the fault analysis stage comprises:
s1, firstly, through the retrieval module, ID query is carried out on the ID of the distribution transformer input at the retrieval input end, or query can be carried out on the distribution transformer through GPS positioning query, a current sensor arranged in the distribution transformer can carry out current detection on each distribution transformer, and after the current detection is normal, the current is transmitted to the power consumption unit module;
s2, when the current abnormality occurs in the power utilization unit module, the power utilization unit module can be automatically powered off through the leakage protector or can be powered off through the manual power-off switch;
s3, analyzing the received data by the PLC control system, wherein the PLC control system can judge whether the current closed by the leakage protector is an abnormal circuit breaking path or not, and judge whether the current closed by the manual power-off switch is a normal circuit breaking path or not;
the information delivery phase comprises:
s4, firstly, receiving the processing data of the data processing system, wherein the data export system can transmit the data processed by the data processing system to the client in three modes of character display, picture display and monitoring video export;
and S5, the client can derive three data templates for displaying text display, picture display and monitoring video for managers and control the service condition of the power grid control system in real time.
6. The method for detecting and eliminating the faults of the power distribution network according to claim 4, wherein the method comprises the following steps: in the case of abnormal power outage in step S3 in the fault analysis phase;
s3.1, the PLC control system transmits data of an abnormal power-off path to a fault analysis system, the fault analysis system analyzes power-off data to reach a value capable of stopping power-off, and the execution tripping and closing device sends an instruction to the distribution transformer so that the distribution transformer stops supplying power to the power utilization unit module;
s3.2, the fault analysis system retrieves and analyzes the outage data, and simultaneously transmits the data to the interior of the data processing system through an instruction, and the data processing system analyzes the data;
and S3.3, finally, the PLC control system directly transmits the data of the normal power-off path to the interior of the data processing system, and the data processing system analyzes the data.
7. The method for detecting and eliminating the faults of the power distribution network according to claim 5, wherein the method comprises the following steps: when the power is normally off in step S3 in the fault analysis phase;
and S3.4, finally, the PLC control system directly transmits the data of the normal power-off path to the interior of the data processing system, and the data processing system analyzes the data.
8. The method for detecting and eliminating the faults of the power distribution network according to claim 6, wherein when the numerical value capable of stopping power outage is not reached in the fault analysis stage:
s3.1.1, the failure analysis system penetrates the value into the data processing system, the data processing system imports the data into the information transmission system;
s3.1.2, the data export system in the information transmission system transmits data to the client, the client sends out an instruction to control and execute the tripping and closing switch and send the instruction to the distribution transformer, so that the distribution transformer stops supplying power to the power utilization unit module.
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| CN106990328A (en) * | 2017-05-16 | 2017-07-28 | 国网山东省电力公司 | The analysis of distribution repairing abnormal data, fault location system and method |
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| CN109962446A (en) * | 2019-04-28 | 2019-07-02 | 西南科技大学城市学院 | Safety utilization of electric power intelligent protection device |
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- 2021-11-30 CN CN202111446294.7A patent/CN114252729A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990328A (en) * | 2017-05-16 | 2017-07-28 | 国网山东省电力公司 | The analysis of distribution repairing abnormal data, fault location system and method |
| CN107167704A (en) * | 2017-05-16 | 2017-09-15 | 国网山东省电力公司 | Fault Diagnosis of Distribution Network system and method based on CIM |
| CN107271844A (en) * | 2017-06-20 | 2017-10-20 | 合肥博之泰电子科技有限公司 | A kind of intelligent light current line-monitoring system |
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