Primary device and secondary device fusion cabin transfer system and transfer method

Abstract

This application discloses a primary and secondary equipment fusion compartment transfer system and method, relating to the field of substation renovation. The method includes a fusion compartment, connecting cables, and flexible cables. The fusion compartment includes primary and secondary equipment. One end of the connecting cable is connected to the busbar of the 10kV switchgear to be renovated in the substation. The other end of the connecting cable is connected to the main and secondary cabinets of the primary equipment. One end of the flexible cable is connected to the 10kV feeder cabinet of the primary equipment. The other end of the flexible cable is laid within a set range of the terminal pole of the line to be renovated. The flexible cable is used to reconnect the line to be renovated. The secondary equipment is used to protect the main transformer and switchgear of the substation. This application enables substation renovation without load loss and without power outage.

Description

Technical Field

[0001] This application relates to the field of substation renovation, and in particular to a primary and secondary equipment fusion compartment transfer system and transfer method. Background Technology

[0002] The substation secondary renovation project requires the replacement of all secondary equipment in the station. When replacing the secondary equipment in the 10kV outgoing line bay, the switch cabinet needs to be de-energized. However, the National Energy Administration has strict requirements on the duration of power outages, and the surrounding residential, commercial, and industrial users also have very high requirements for power reliability. Excessive power outage time is not allowed. Under these circumstances, it is necessary to consider a method to replace equipment without losing load. Summary of the Invention

[0003] The purpose of this application is to provide a primary and secondary equipment fusion chamber transfer system and method, which can realize substation upgrades without load loss or power outages.

[0004] To achieve the above objectives, this application provides the following solution: In a first aspect, this application provides a primary and secondary equipment fusion chamber transfer system, comprising: a fusion chamber, a connecting cable, and a flexible cable; the fusion chamber includes primary equipment and secondary equipment. One end of the connecting cable is connected to the busbar of the 10kV switchgear to be upgraded in the substation; the other end of the connecting cable is connected to the main and secondary cabinets of the primary equipment; one end of the flexible cable is connected to the 10kV feeder cabinet of the primary equipment; the other end of the flexible cable is laid within the set range of the terminal pole of the line to be upgraded; the flexible cable is used to reconnect the line to be upgraded; the secondary equipment is used to protect the main transformer and switchgear of the substation.

[0005] In one embodiment, the connecting cable is a 10kV cable.

[0006] In one embodiment, the connecting cable is a 3-core cable.

[0007] In one embodiment, the connecting cable is made of copper.

[0008] In one embodiment, the primary equipment includes: a 10kV feeder cabinet, a main secondary cabinet, a sectionalizing cabinet, a voltage transformer cabinet, and a station service transformer cabinet; The 10kV feeder cabinet, the main secondary cabinet, the sectional cabinet, the voltage transformer cabinet, and the station service transformer cabinet are connected by the busbar of the primary equipment.

[0009] In one embodiment, the secondary equipment includes: a main transformer protection and control cabinet, a remote control and communication cabinet, a monitoring host cabinet, and an integrated power supply cabinet; The main transformer protection and control cabinet is connected to the main transformer of the substation; the remote control and communication cabinet is connected to the existing communication equipment of the substation; the monitoring host cabinet is connected to the main transformer protection and control cabinet, the remote control and communication cabinet and the integrated power supply cabinet respectively; the integrated power supply cabinet is connected to the main transformer protection and control cabinet, the remote control and communication cabinet and the monitoring host cabinet respectively.

[0010] In one embodiment, the primary equipment further includes: a 10kV protection and control device; The 10kV protection and control device is installed in the 10kV feeder cabinet and the section cabinet respectively, and the 10kV protection and control device is connected to the remote control and communication cabinet.

[0011] In one embodiment, the fusion chamber further includes: a primary equipment chamber, a secondary equipment chamber, and a partition; The primary equipment is housed in the primary equipment compartment; the secondary equipment is housed in the secondary equipment compartment; the primary equipment compartment and the secondary equipment compartment are separated by a partition.

[0012] In one embodiment, the fusion chamber further includes: a cable interlayer; The cable interlayer is located at the bottom of the primary equipment compartment and the secondary equipment compartment; the cable interlayer is used for laying cables.

[0013] Secondly, this application provides a method for transferring a primary equipment and secondary equipment fusion compartment, including: Connect one end of the connecting cable to the busbar of the 10kV switchgear to be shut down and upgraded in the substation, and connect the other end to the main and secondary cabinets of the primary equipment. Connect one end of the flexible cable to the 10kV feeder cabinet of the primary equipment, and lay the other end of the flexible cable within the set range of the terminal pole of the line to be upgraded. The primary equipment, secondary equipment, and dispatch terminal were debugged separately. Adjust the isolation cabinet handcart in the station to the working position and close the switch of the 10kV feeder cabinet; The flexible cable was reconnected to the line to be modified.

[0014] According to the specific embodiments provided in this application, the following technical effects are disclosed: This application provides a primary and secondary equipment fusion compartment transfer system and method. The system uses connecting cables to connect the 10kV switchgear busbar of the substation to be de-energized and the main and secondary cabinets of the primary equipment. Flexible cables are used to connect the primary equipment to the 10kV feeder cabinet. The other end of the flexible cable is laid within the set range of the terminal pole of the line to be energized, thereby transferring the load in the substation to the primary and secondary equipment fusion compartment. This achieves load transfer within the substation without loss of load and without power outage, without the need for additional rental of secondary equipment, and can be achieved directly using the secondary equipment in the fusion compartment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the primary and secondary equipment fusion chamber transfer system. Figure 2 A schematic diagram showing the connection between the primary and secondary equipment fusion compartment and the substation; Figure 3 This is a flowchart of the method for transferring the primary and secondary equipment fusion chamber. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The current conventional solution is to use a medium-voltage generator vehicle, which also requires live-line work, but is expensive and requires refueling periodically to avoid load loss. To address these issues, this application provides a primary and secondary equipment fusion chamber transfer system and method.

[0020] like Figure 1 and Figure 2 As shown, this application provides a primary and secondary equipment fusion chamber transfer system, including: a fusion chamber, a connecting cable, and a flexible cable; the fusion chamber includes primary equipment and secondary equipment.

[0021] One end of the connecting cable is connected to the busbar of the 10kV switchgear to be upgraded in the substation; the other end of the connecting cable is connected to the main and secondary cabinets of the primary equipment; one end of the flexible cable is connected to the 10kV feeder cabinet of the primary equipment; the other end of the flexible cable is laid within the set range of the terminal pole of the line to be upgraded; the flexible cable is used to reconnect the line to be upgraded; the secondary equipment is used to protect the main transformer and switchgear of the substation.

[0022] In one exemplary embodiment, the connecting cable is a 10kV cable.

[0023] In one exemplary embodiment, the connecting cable is a 3-core cable.

[0024] In practical applications, the connecting cable is made of copper.

[0025] In one exemplary embodiment, the primary equipment includes: a 10kV feeder cabinet, a main secondary cabinet, a sectionalizing cabinet, a voltage transformer cabinet, and a station service transformer cabinet. The 10kV feeder cabinet, the main secondary cabinet, the sectionalizing cabinet, the voltage transformer cabinet, and the station service transformer cabinet are connected via the busbar of the primary equipment.

[0026] The main transformer protection and control cabinet is connected to the main transformer of the substation; the remote control and communication cabinet is connected to the existing communication equipment of the substation; the monitoring host cabinet is connected to the main transformer protection and control cabinet, the remote control and communication cabinet, and the integrated power supply cabinet; the integrated power supply cabinet is connected to the main transformer protection and control cabinet, the remote control and communication cabinet, and the monitoring host cabinet. Specifically, the monitoring host cabinet is connected to other secondary equipment in the fusion compartment; the integrated power supply cabinet is connected to other secondary equipment in the fusion compartment.

[0027] The main transformer protection and control cabinet includes main transformer protection devices and main transformer control devices; the remote control and communication cabinet includes data communication gateway and dispatch data network equipment; the monitoring host cabinet includes monitoring host and five-proof protection; the integrated power supply cabinet includes AC power supply cabinet, DC charging and battery cabinet and feeder cabinet.

[0028] In practical applications, the primary equipment further includes a 10kV protection and control device; the 10kV protection and control device is respectively installed in the 10kV feeder cabinet and the sectionalizing cabinet, and the 10kV protection and control device is connected to the remote control and communication cabinet. Specifically, the 10kV protection and control device is installed in the 10kV feeder cabinet and the sectionalizing cabinet, and is connected to the remote control and communication cabinet in the secondary equipment compartment via a communication line.

[0029] In practical applications, the fusion chamber further includes: a primary equipment chamber, a secondary equipment chamber, and a partition; the primary equipment is housed in the primary equipment chamber; the secondary equipment is housed in the secondary equipment chamber; the primary equipment chamber and the secondary equipment chamber are separated by the partition. The primary and secondary fusion chambers are an integral structure, with the primary equipment chamber and the secondary equipment chamber separated by a partition. A cable interlayer is provided at the bottom of the chamber to facilitate the laying of control cables.

[0030] In practical applications, the fusion compartment also includes a cable interlayer; the cable interlayer is located at the bottom of the primary equipment compartment and the secondary equipment compartment; the cable interlayer is used for laying cables.

[0031] In another exemplary embodiment, a different specific working method of the secondary equipment fusion chamber transfer system in practical applications is also provided, such as... Figure 2 As shown. The 10kV Section 1 busbar is connected to the 10kV fusion compartment busbar via outgoing lines, which are 10kV flexible cables. The 10kV Section 1 busbar also connects to the main transformer secondary incoming lines, capacitors, station service transformers, a set of busbar equipment, and sectionalizing cabinets. The sectionalizing cabinets and isolation cabinets are connected to the main transformer secondary incoming lines of the fusion compartment via 10kV 3-core copper cables. The fusion compartment is connected to the 10kV Section 10kV Busbar via outgoing lines. The 10kV fusion compartment busbar also connects to the sectionalizing cabinets, station service transformers, and voltage transformers. The 10kV Section 10kV Busbar also connects to the isolation cabinets, two sets of busbar equipment, station service transformers, and the main transformer secondary incoming lines.

[0032] This application utilizes a fusion compartment, employing flexible cables and live connection methods to transfer substation loads without loss, achieving uninterrupted substation upgrades. The main and secondary cabinets within the fusion compartment are connected to the existing switchgear busbars within the substation using 10kV 3-core copper cables. Feeder switchgear within the fusion compartment is connected to the terminal poles of the lines to be upgraded via flexible cables. The load of the existing feeder switchgear to be upgraded is transferred to the feeder switchgear within the fusion compartment. This application achieves uninterrupted load transfer within the substation due to the flexible cables and uninterrupted connection methods. This application eliminates the need for additional leased secondary equipment, directly integrating the secondary equipment within the fusion compartment. This application ensures no load loss even in the event of a busbar fault due to the connection method between the existing switchgear busbars and the fusion compartment; one end of the connecting cable is connected to the busbar between the existing switchgear section cabinets and isolation cabinets within the substation, and the other end is connected to the main and secondary cabinets within the fusion compartment. This application reduces costs, and the fusion compartment, containing both primary and secondary equipment, has a long service life and can be reused multiple times.

[0033] In another exemplary embodiment, such as Figure 3 As shown, this application also provides a method for transferring a primary equipment and secondary equipment fusion compartment, comprising: Step 101: Connect one end of the connecting cable to the busbar of the 10kV switchgear to be shut down and upgraded in the substation, and connect the other end to the main and secondary cabinets of the primary equipment. Connect one end of the flexible cable to the 10kV feeder cabinet of the primary equipment, and lay the other end of the flexible cable within the set range of the terminal pole of the line to be upgraded.

[0034] Step 102: Debug the primary equipment, secondary equipment and dispatch terminal respectively.

[0035] Step 103: Adjust the isolation cabinet handcart in the station to the working position and close the switch of the 10kV feeder cabinet.

[0036] Step 104: Reconnect the flexible cable to the line to be modified.

[0037] In another exemplary embodiment, a specific process of the primary and secondary equipment fusion compartment transfer method in practical application is also provided. Using the fusion compartment, through flexible cables and with live connection, the substation load is transferred to the fusion compartment without loss, realizing the substation uninterrupted power supply transformation, including the following steps.

[0038] Step 1: Prepare the fusion cabin. The primary equipment in the cabin includes 10kV feeder cabinets, main and secondary cabinets, sectional cabinets, voltage transformer cabinets, and station service transformer cabinets; the secondary equipment includes main transformer protection and control cabinets, remote control and communication cabinets, monitoring host cabinets, integrated power supply cabinets, and 10kV protection and control devices.

[0039] Step 2: Use a 10kV 3-core copper cable, with one end connected to the 10kV switchgear busbar of the substation to be de-energized and upgraded. The specific location is the busbar inside the isolation cabinet. During this step, the circuit breaker of the existing switchgear section cabinet can be in the open position, and the isolation cabinet handcart can be in the test position. At this time, the isolation cabinet busbar is de-energized, so the cable can be connected without loss of load.

[0040] Step 3: Connect the other end of the 10kV 3-core copper cable to the main secondary cabinet in the fusion compartment. At this time, the existing switchgear busbar in the station is connected to the primary equipment in the fusion compartment. Use a flexible cable, connect one end to the 10kV feeder cabinet in the fusion compartment, and lay the other end to the vicinity of the terminal pole of the line to be modified.

[0041] Step 4: Test and debug the primary and secondary equipment in the integrated module, and complete the debugging work with the dispatch terminal. At this time, the integrated module is ready for operation. The main and secondary cabinets in the module provide the main power supply, the feeder cabinets transfer the existing load in the station, the voltage transformer cabinets provide the voltage required by the metering and protection devices, and the station service transformer cabinets provide AC power to the module. The main transformer protection cabinet and main transformer measurement and control cabinet realize the protection of the main transformer and the measurement and control functions of the circuit. The 10kV protection and measurement and control device realizes the protection of each switch cabinet and the measurement and control functions. The data communication gateway realizes the uploading of automation information in the station. The dispatch data network equipment realizes the communication transmission of data. The monitoring host realizes the panoramic monitoring of the station. The integrated power supply realizes the AC, DC and UPS power supply for the equipment in the station.

[0042] Step 5: Position the isolation cabinet handcart in the working position. At this time, the busbar of the switch cabinet in the station supplies power to the fusion compartment through a 10kV 3-core copper cable. Set the 10kV feeder switch in the compartment to the closed position. At this time, the flexible cable is energized. Near the terminal pole, the line to be modified is reconnected using the flexible cable through a live connection operation. At this time, the line is energized through the fusion compartment.

[0043] Step 6: The existing 10kV switchgear and related line bays within the station can be de-energized for relevant modifications. There will be no load loss, and automation information will be uploaded through the fusion module. The station will remain under monitoring and will meet operational requirements.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A primary and secondary equipment fusion chamber transfer system, characterized in that, The primary and secondary equipment fusion chamber transfer system includes: a fusion chamber, connecting cables, and flexible cables; the fusion chamber includes primary equipment and secondary equipment. One end of the connecting cable is connected to the busbar of the 10kV switchgear to be upgraded in the substation; the other end of the connecting cable is connected to the main and secondary cabinets of the primary equipment; one end of the flexible cable is connected to the 10kV feeder cabinet of the primary equipment; the other end of the flexible cable is laid within the set range of the terminal pole of the line to be upgraded; the flexible cable is used to reconnect the line to be upgraded; the secondary equipment is used to protect the main transformer and switchgear of the substation.

2. The primary and secondary equipment fusion chamber transfer system according to claim 1, characterized in that, The connecting cable is a 10kV cable.

3. The primary and secondary equipment fusion chamber transfer system according to claim 1, characterized in that, The connecting cable is a 3-core cable.

4. The primary and secondary equipment fusion chamber transfer system according to any one of claims 2 or 3, characterized in that, The connecting cable is made of copper.

5. The primary and secondary equipment fusion chamber transfer system according to claim 1, characterized in that, The primary equipment includes: 10kV feeder cabinet, main and secondary cabinet, sectional cabinet, voltage transformer cabinet and station service transformer cabinet. The 10kV feeder cabinet, the main secondary cabinet, the sectional cabinet, the voltage transformer cabinet, and the station service transformer cabinet are connected by the busbar of the primary equipment.

6. The primary and secondary equipment fusion chamber transfer system according to claim 1, characterized in that, The secondary equipment includes: a main transformer protection and control cabinet, a remote control and communication cabinet, a monitoring host cabinet, and an integrated power supply cabinet; The main transformer protection and control cabinet is connected to the main transformer of the substation; the remote control and communication cabinet is connected to the existing communication equipment of the substation; the monitoring host cabinet is connected to the main transformer protection and control cabinet, the remote control and communication cabinet and the integrated power supply cabinet respectively; the integrated power supply cabinet is connected to the main transformer protection and control cabinet, the remote control and communication cabinet and the monitoring host cabinet respectively.

7. The primary and secondary equipment fusion chamber transfer system according to claim 5, characterized in that, The primary equipment also includes: a 10kV protection and control device; The 10kV protection and control device is installed in the 10kV feeder cabinet and the section cabinet respectively, and the 10kV protection and control device is connected to the remote control and communication cabinet.

8. The primary and secondary equipment fusion chamber transfer system according to claim 1, characterized in that, The fusion chamber also includes: a primary equipment chamber, a secondary equipment chamber, and a partition; The primary equipment is housed in the primary equipment compartment; the secondary equipment is housed in the secondary equipment compartment; the primary equipment compartment and the secondary equipment compartment are separated by a partition.

9. The primary and secondary equipment fusion chamber transfer system according to claim 8, characterized in that, The fusion chamber also includes: a cable interlayer; The cable interlayer is located at the bottom of the primary equipment compartment and the secondary equipment compartment; the cable interlayer is used for laying cables.

10. A method for transferring a primary equipment and secondary equipment fusion chamber, characterized in that, The method for transferring the primary and secondary equipment fusion chamber includes: Connect one end of the connecting cable to the busbar of the 10kV switchgear to be shut down and upgraded in the substation, and connect the other end to the main and secondary cabinets of the primary equipment. Connect one end of the flexible cable to the 10kV feeder cabinet of the primary equipment, and lay the other end of the flexible cable within the set range of the terminal pole of the line to be upgraded. The primary equipment, secondary equipment, and dispatch terminal were debugged separately. Adjust the isolation cabinet handcart in the station to the working position and close the switch of the 10kV feeder cabinet; The flexible cable was reconnected to the line to be modified.

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