10kV intelligent bypass load switch and system

Abstract

The invention discloses a 10kV intelligent bypass load switch and system. The invention discloses an intelligent nuclear phase switch, which comprises a switch box body, a wire inlet side cable quick-plug interface group arranged on the switch box body, a wire outlet side cable quick-plug interface group arranged on the switch box body, an intelligent nuclear phase mechanism arranged on the switch box body, an opening and closing button arranged on the switch box body, and an intelligent control instrument arranged on the switch box body, the straight-through current transformer is arranged in the switch box body; the opening and closing times counter is arranged on the switch box body; the straight-through current transformer is used for current monitoring and microcomputer protection; the system comprises an intelligent controller, a collector, a rear-end transmission terminal and a data platform center, the purposes of monitoring the bypass load switch in real time, reducing the workload of workers and reducing the danger coefficient of the workers are achieved.

Description

Technical Field

[0001] The present invention relates to the production and application field of bypass load switches, and in particular to a 10kV intelligent bypass load switch and a system. Background Art

[0002] With the rapid development of the world economy, the rapid development of power grid construction and power system operation technology, people have higher and higher requirements for automobile specialization and high speed, and the demand for special vehicles has increased year by year, leading to the rapid development of special vehicles, and the emergence of specialization, diversification, multi-function, intelligence and other development trends. The bypass vehicle is a special operation vehicle that loads a complete set of flexible cable release mechanisms into a special compartment, is driven by the on-board hydraulic system, and is controlled by the electrical program. It arrives at the designated location in time during operation and quickly implements the bypass operation.

[0003] During the bypass operation, the most core part is the bypass load switch. A temporary flexible cable is used to form a parallel line between the line and the bypass switch. The load transfer is completed through the opening and closing operations of the bypass switch, ultimately achieving the purpose of non-stop power supply operation.

[0004] However, since this operation is a temporary operation, it is necessary to understand the equipment operation status in a timely manner. At present, manual inspection is used to monitor the equipment operation status, but the manual method has the problem that the inspection is periodic and cannot respond quickly to abnormalities. At the same time, the manual method requires the inspectors to hold the equipment for inspection, which increases the labor intensity.

[0005] How to solve the above problems is a technical problem that technicians in this technical field need to consider urgently.

[0006] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0007] In order to solve the above technical problems, the present invention proposes a 10kV intelligent bypass load switch and system to achieve the purpose of achieving real-time monitoring of the bypass load switch, reducing the workload of staff and reducing the risk factor of staff.

[0008] To achieve the above object, the technical solution of the present invention is as follows: A 10kV intelligent bypass load switch comprises a switch box, an incoming line side cable quick-plug interface group arranged on the switch box, an outgoing line side cable quick-plug interface group arranged on the switch box, an intelligent phase checking mechanism arranged on the switch box, an opening and closing button arranged on the switch box, an intelligent control instrument arranged on the switch box, a through-core current transformer arranged in the switch box and an opening and closing times counter arranged on the switch box, wherein the through-core current transformer is used for current monitoring and microcomputer protection.

[0009] It is further worth noting that the switch box is also provided with a lithium battery and an intelligent control module, the lithium battery provides the power demand of the entire device, and the intelligent control module realizes the intelligent use of the entire device; The switch box is also provided with a pressure explosion-proof mechanism, which is used for rapid pressure relief.

[0010] It is further worth noting that the installation locations of the components connected to the switch box are all sealed with silicone rubber.

[0011] It is further worth noting that the incoming cable quick-plug interface group includes three incoming cable quick-plug interface units, and the incoming cable quick-plug interface units include a mounting base, a connector provided on the mounting base, and a mounting assembly provided to connect the connector to the mounting base; the mounting base is mounted on the switch box by bolts; The mounting assembly includes a mounting groove arranged on the mounting base, a lifting spring arranged at the bottom of the mounting groove, a locking groove arranged on the side wall of the mounting groove, a locking column arranged in the locking groove, a locking spring arranged at the bottom of the locking groove and at the bottom of the locking column, and a locking through hole arranged on the mounting column and matching with the locking column. Under the action of the locking spring, the locking column can enter the locking through hole to fix the mounting column.

[0012] It is further worth noting that both ends of the locking through hole are in a prism structure, and the prism structure has a small bottom surface close to one end of the through hole.

[0013] It is further worth noting that the middle part of the mounting base is arranged in a through hole to realize the connection between the mounting slot and the inside of the switch box, and the lifting spring is arranged on the side wall outside the through hole; the diameter of the through hole is smaller than the diameter of the mounting slot; the joint can compress the spring toward the through hole when pressure is applied; A long through groove is provided in the middle of the joint, and the long through groove is connected with the through hole.

[0014] It is further worth noting that the intelligent controller, collector, back-end transmission terminal and data platform center; The intelligent controller is used to detect the relevant data of the bypass connector and send the detected data to the collector. The collector summarizes the data collected by multiple intelligent controllers and sends the summarized data to the back-end transmission terminal; The back-end transmission terminal stores the received data to the back-end data platform center through the network.

[0015] It is further worth noting that the intelligent controller transmits to the collector via a LoRa transmitter, and the LoRa transmitter is connected to an antenna to increase the transmission distance; the collector transmits to the background transmission terminal via a 485 communication interface.

[0016] It is further worth noting that the intelligent controller includes a current detection unit for current detection, a plug-in head counting unit for plug-in head counting, and a temperature detection unit for temperature detection; The current detection unit includes a Rogowski coil. After the Rogowski coil senses the current, the current running current of the joint is calculated after current signal sampling, processing and current calibration. The current detection range is 0-500A, and the critical current display error value is ±5%; The plug-in head counting unit includes a connector counter, which records the actions of the travel switch and counts the number of connections of the connector by calculation and interference elimination.

[0017] It is further worth noting that an alarm output unit is also included, and the alarm output unit is used to issue an alarm when abnormal data is detected.

[0018] The present invention has the following advantages: the present invention provides a 10kV intelligent bypass load switch consisting of a switch box, an incoming line side cable quick-plug interface group, an outgoing line side cable quick-plug interface group, an intelligent phase verification mechanism, an opening and closing button, an intelligent control instrument through-core current transformer and an opening and closing times counter, and cooperates with a corresponding control system consisting of an intelligent controller, a collector, a back-end transmission terminal and a data platform center. It has real-time monitoring, display, remote transmission viewing and alarm functions of voltage, current, switch joint temperature, switch status, etc., and can remotely operate the opening and closing of the switch, further improving the informatization and intelligence of the bypass operation, providing support for the safe and efficient implementation of the bypass operation, and achieving the purpose of realizing real-time monitoring of the bypass load switch, reducing the workload of the staff and reducing the risk factor of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0020] Figure 1 A schematic diagram of the structure of a 10kV intelligent bypass load switch disclosed in an embodiment of the present invention; Figure 2 A system block diagram of a control system of a 10kV intelligent bypass load switch disclosed in an embodiment of the present invention; The corresponding component names represented by the numbers and letters in the figure are: 1. Switch box; 2. Cable quick-plug interface group on the incoming line side; 3. Cable quick-plug interface group on the outgoing line side; 4. Intelligent phase verification mechanism; 5. Opening and closing buttons; 6. Intelligent control instrument; 8. Opening and closing times counter; 9. Lithium battery; 10. Pressure explosion-proof mechanism; 11. Intelligent controller; 12. Collector; 13. Back-end transmission terminal; 14. Data platform center; 15. Alarm unit. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The present invention provides a 10kV intelligent bypass load switch and system. Its working principle is to provide a 10kV intelligent bypass load switch composed of a switch box 1, an incoming line side cable quick-plug interface group 2, an outgoing line side cable quick-plug interface group 3, an intelligent phase verification mechanism 4, an opening and closing button 5, an intelligent control instrument 6, a through-core current transformer and an opening and closing times counter 8, and cooperate with a corresponding control system composed of an intelligent controller 11, a collector 12, a back-end transmission terminal 13 and a data platform center 14. It has real-time monitoring, display, remote transmission viewing and alarm functions of voltage, current, switch joint temperature, switch status, etc., and can remotely operate the opening and closing of the switch, further improve the informatization and intelligence level of the bypass operation, provide support for the safe and efficient implementation of the bypass operation, and achieve the purpose of realizing real-time monitoring of the bypass load switch, reducing the workload of the staff and reducing the risk factor of the staff.

[0023] The present invention is further described in detail below with reference to examples and specific implementation modes.

[0024] like Figure 1As shown, a 10kV intelligent bypass load switch comprises a switch box 1, an incoming line side cable quick-plug interface group 2 arranged on the switch box 1, an outgoing line side cable quick-plug interface group 3 arranged on the switch box 1, an intelligent phase verification mechanism 4 arranged on the switch box 1, an opening and closing button 5 arranged on the switch box 1, an intelligent control instrument 6 arranged on the switch box 1, and a through-current transformer arranged in the switch box 1. The through-current transformer is a relatively common device in the field, and those skilled in the art can obtain it through conventional technical means, so it is not described in detail here. An opening and closing times counter 8 is arranged on the switch box 1, a lithium battery 9 is arranged in the switch box 1, an intelligent control module is arranged in the switch box 1, and a pressure explosion-proof mechanism 10 is also arranged on the switch box 1. The through-current transformer is used for current monitoring and microcomputer protection.

[0025] The switch casing is built with capacitors for voltage division. After multiple tests, the design of the signal coupling circuit is adjusted to ensure that the voltage detection accuracy is within ±5%. The Rogowski coil is used to measure the current to solve the problem of no space to install CT in the bypass load switch. The chip thermistor is used to contact measure the temperature of the three-phase cable connector at the incoming and outgoing ends, and the chip thermistor and the Rogowski coil are designed as an integrated unit.

[0026] The lithium battery 9 provides the power demand for the entire device, and the intelligent control module realizes the intelligent use of the entire device.

[0027] The pressure explosion-proof mechanism 10 is used for rapid pressure relief.

[0028] The components connected to the switch box 1 are all sealed by silicone rubber.

[0029] The incoming cable quick-plug interface group 2 and the outgoing cable quick-plug interface group 3 meet the connection needs of domestic quick-plug cables. Through the adapter, they can also be adapted to imported quick-plug cables. Since the cables need to be plugged and unplugged frequently, the interfaces are easily damaged. In order to facilitate the rapid replacement of the production line interfaces at the work site, the incoming cable quick-plug interface group 2 includes three incoming cable quick-plug interface units.

[0030] The structure of the outgoing cable quick-plug interface group 3 is the same as that of the incoming cable quick-plug interface group 2, which is specifically as follows: The cable quick-plug interface unit on the incoming line side includes a mounting base, a connector arranged on the mounting base, and a mounting assembly arranged to connect the connector with the mounting base; the mounting base is mounted on the switch box 1 by bolts.

[0031] The mounting assembly includes a mounting groove arranged on the mounting base, a lifting spring arranged at the bottom of the mounting groove, a locking groove arranged on the side wall of the mounting groove, a locking column arranged in the locking groove, a locking spring arranged at the bottom of the locking groove and at the bottom of the locking column, and a locking through hole arranged on the mounting column and matched with the locking column. The locking column can enter the locking through hole under the action of the locking spring to fix the mounting column. The two ends of the locking through hole are prism structures, and the prism structure is a small bottom surface near one end of the through hole. This structure can facilitate the locking column to be pushed open when entering. When the joint reaches the bottom, the locking column is just opposite to the locking through hole. At this time, the locking column is pushed into the locking through hole under the action of the locking spring.

[0032] The middle part of the mounting base is arranged in a through hole to connect the mounting groove with the inside of the switch box 1, and the lifting spring is arranged on the side wall outside the through hole; the diameter of the through hole is smaller than the diameter of the mounting groove; the joint can compress the spring toward the through hole when pressure is applied; a long through groove is arranged in the middle part of the joint, and the long through groove is connected with the through hole.

[0033] In actual use, a liquid crystal display screen can be set on the switch box 1. The liquid crystal display screen is mainly used to display the current detection current value, temperature value, and connector count. The current power is displayed when the battery is discharging, and the current charging power is displayed when it is charging. When the power is turned on, the LCD screen displays the logo and product name. After about 1 second, the relevant parameters of this switch configuration are displayed: the current switch address, current threshold, temperature threshold, etc. After about 2 seconds, it enters the normal display interface. The normal interface is displayed for about 20 seconds, and then automatically enters the screen off state.

[0034] Combination Figure 1 and Figure 2 As shown, a control system of a 10kV intelligent bypass load switch includes an intelligent controller 11, a collector 12, a back-end transmission terminal 13, a data platform center 14 and an alarm unit 15; The intelligent controller 11 is used to detect the relevant data of the bypass connector and transmit the detected data to the collector 12 through the LoRa transmitter; the intelligent controller 11 includes a current detection unit for current detection, a plug-in head counting unit for plug-in head counting, and a temperature detection unit for temperature detection; the current detection unit includes a Rogowski coil, which senses the current, samples the current signal, processes the current, and calibrates the current to calculate the current connector operating current; the current detection range is 0-500A, and the critical current display error value is ±5%; the plug-in head counting unit includes a connector counter, which records the action of the travel switch and counts the number of connector connections by calculation and interference elimination. The LoRa transmitter is connected to an antenna to increase the transmission distance.

[0035] The collector 12 aggregates the data collected by the multiple intelligent controllers 11 and transmits the aggregated data to the background transmission terminal through the 485 communication interface.

[0036] The back-end transmission terminal 13 stores the received data to the back-end data platform center 14 through the network.

[0037] The alarm output unit is used to give an alarm when abnormal data is detected. When the detected current value and temperature value exceed the set threshold value and the lithium battery 9 is low in power, the LCD screen will prompt the alarm item and the alarm indicator will flash. When the alarm value returns to the threshold range, the alarm will be automatically released.

[0038] The details are as follows: The alarms are mainly divided into the following situations.

[0039] (1) Abnormal conditions: During the operation of the bypass switch, the manual interlock signal, the pressure relief interlock signal is lost, or the lithium battery 9 is under-voltage, causing an alarm; (2) Abnormal position: alarm caused by logic error of closing and opening position signals; (3) Overcurrent: When the bypass switch is in operation, the current monitoring circuit monitors the running current of the motor in real time. If the running current of the motor exceeds the threshold, the microprocessor MCU will immediately receive a signal from the current monitoring circuit, and the microprocessor will process it in time and light up the alarm light; (4) Timeout: Timeout alarm can be further divided into timeout when the device is not in place and timeout when the device is not in place.

[0040] Stay-in-position timeout: When the bypass switch mechanism is in the closed position or open position, the bypass switch position has not been switched for a certain period of time, which is the stay-in-position timeout; The out-of-position timeout refers to when the bypass switch mechanism moves from the closed position to the open position or from the open position to the closed position, after a certain period of time, no in-position signal of the mechanism is received, which is the out-of-position timeout.

[0041] This type of switch can be widely used in bypass operations, including line relocation, intelligent switch transformation, emergency equipment access to the power grid and other operations. Through intelligent bypass load switches, the scope of non-stop power supply business can be effectively expanded, the number of non-stop power supply operations can be increased, new operation projects can be explored, and the power supply and sales to users can be increased. With the optimization of resource allocation and the application of distribution automation technologies such as automatic detection and automatic monitoring, the safety level of operators can be greatly improved, which will help the company upgrade its economic and social benefits. Bypass operations can be carried out more safely and effectively, solving the safety problems of high labor intensity of operators and the failure to timely discover bypass system operation problems, providing technical support for the realization of informationization, intelligence and visualization of bypass operations, helping the economic and efficient operation of regional power grids and improving the company's service quality.

[0042] Through the above method, a 10kV intelligent bypass load switch and system provided by the present invention, by providing a 10kV intelligent bypass load switch composed of a switch box 1, an incoming line side cable quick-plug interface group 2, an outgoing line side cable quick-plug interface group 3, an intelligent phase verification mechanism 4, an opening and closing button 5, an intelligent control instrument 6 through-core current transformer and an opening and closing times counter 8, and cooperating with a corresponding control system composed of an intelligent controller 11, a collector 12, a back-end transmission terminal 13 and a data platform center 14, has real-time monitoring, display, remote transmission viewing and alarm functions of voltage, current, switch joint temperature, switch status, etc., and can remotely operate the switch opening and closing, further improving the informatization and intelligence level of bypass operations, providing support for the safe and efficient implementation of bypass operations, and achieving the purpose of realizing real-time monitoring of bypass load switches, reducing the workload of staff and reducing the risk factor of staff.

[0043] The above is only a preferred implementation of a 10kV intelligent bypass load switch and system disclosed in the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A 10kV intelligent bypass load switch, characterized in that: The invention comprises a switch box, an incoming line cable quick-plug interface group arranged on the switch box, an outgoing line cable quick-plug interface group arranged on the switch box, an intelligent phase checking mechanism arranged on the switch box, an opening and closing button arranged on the switch box, an intelligent control instrument arranged on the switch box, a through-core current transformer arranged in the switch box and an opening and closing times counter arranged on the switch box, wherein the through-core current transformer is used for current monitoring and microcomputer protection.

2. A 10kV intelligent bypass load switch according to claim 1, characterized in that: The switch box is also provided with a lithium battery and an intelligent control module. The lithium battery provides the power demand of the entire device, and the intelligent control module realizes the intelligent use of the entire device; The switch box is also provided with a pressure explosion-proof mechanism, which is used for rapid pressure relief.

3. A 10kV intelligent bypass load switch according to claim 1, characterized in that: The installation positions of the components connected to the switch box are all sealed with silicone rubber.

4. A 10kV intelligent bypass load switch according to claim 1, characterized in that: The incoming cable quick-plug interface group includes three incoming cable quick-plug interface units, and the incoming cable quick-plug interface units include a mounting base, a joint arranged on the mounting base, and a mounting assembly arranged to connect the joint with the mounting base; the mounting base is mounted on the switch box by bolts; The mounting assembly includes a mounting groove arranged on the mounting base, a lifting spring arranged at the bottom of the mounting groove, a locking groove arranged on the side wall of the mounting groove, a locking column arranged in the locking groove, a locking spring arranged at the bottom of the locking groove and at the bottom of the locking column, and a locking through hole arranged on the mounting column and matching with the locking column. Under the action of the locking spring, the locking column can enter the locking through hole to fix the mounting column.

5. A 10kV intelligent bypass load switch according to claim 4, characterized in that: Both ends of the locking through hole are in a prism structure, and the prism structure is a bottom surface with a small area close to one end of the through hole.

6. A 10kV intelligent bypass load switch according to claim 4, characterized in that: The middle part of the mounting base is arranged in a through hole to realize the connection between the mounting slot and the inside of the switch box, and the lifting spring is arranged on the side wall outside the through hole; the diameter of the through hole is smaller than the diameter of the mounting slot; the joint can compress the spring toward the through hole when pressure is applied; A long through groove is provided in the middle of the joint, and the long through groove is connected with the through hole.

7. A control system for a 10kV intelligent bypass load switch, characterized in that: The intelligent controller, collector, back-end transmission terminal and data platform center; The intelligent controller is used to detect the relevant data of the bypass connector and send the detected data to the collector. The collector summarizes the data collected by multiple intelligent controllers and sends the summarized data to the back-end transmission terminal; The back-end transmission terminal stores the received data to the back-end data platform center through the network.

8. A control system for a 10kV intelligent bypass load switch according to claim 7, characterized in that: The intelligent controller transmits to the collector via a LoRa transmitter, and the LoRa transmitter is connected to an antenna to increase the transmission distance; the collector transmits to the background transmission terminal via a 485 communication interface.

9. A control system for a 10kV intelligent bypass load switch according to claim 7, characterized in that: The intelligent controller includes a current detection unit for current detection, a plug-in head counting unit for plug-in head counting, and a temperature detection unit for temperature detection; The current detection unit includes a Rogowski coil. After the Rogowski coil senses the current, the current running current of the joint is calculated after current signal sampling, processing and current calibration. The current detection range is 0-500A, and the critical current display error value is ±5%; The plug-in head counting unit includes a connector counter, which records the actions of the travel switch and counts the number of connections of the connector by calculation and interference elimination.

10. A control system for a 10kV intelligent bypass load switch according to claim 7, characterized in that: It also includes an alarm output unit, which is used to issue an alarm when abnormal data is detected.

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