Ring main unit unit controller
The ring network cabinet unit controller uses aerial plug to connect primary equipment and primary and secondary fusion DTUs, which solves the problem of abnormal communication between ring network cabinets, achieves the stability and reliability of the power grid, meets the power grid standards, and has the characteristics of plug-and-play and function expansion.
Patent Information
- Application Number
- CN202421996664.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-19
AI Technical Summary
The communication methods of existing ring network cabinets and open and closed stations are prone to abnormalities, resulting in the failure of the "Three Remote" function and it is difficult to meet the latest standards of the power grid. Equipment aging and shortage of accessories increase the difficulty of operation and maintenance, and some power grids are in an unprotected state.
A ring cabinet unit controller is designed, using aerial plug-in to connect primary equipment and primary and secondary fusion DTU to realize signal transmission, and is equipped with local operation functions and electrical locking, canceling the communication link of intermediate forwarding data, and has plug-and-play characteristics.
It improves the reliability and stability of the power grid operation, reduces communication failures, meets grid standards, is safe and convenient to construct, has a short cycle, is scalable and has strong adaptability.
Smart Images
Figure CN223093346U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of intelligent distribution networks, and particularly relates to a ring main unit controller. Background Art
[0002] In the past about 15 years, the power grid has made remarkable progress in the construction of distribution automation. In large industrial parks in the urban or suburban areas of major cities, power supply is mainly based on cable lines, and cable lines usually form a grid through ring main units and switching substations. The currently used ring main units and switching substation equipment can be mainly divided into the following types: 1. Incoming line load switch plus outgoing line circuit breaker, mainly using a centralized DTU in cooperation with an outgoing line watchdog (panel-type FTU) to achieve distribution automation functions. The ring main units in Shandong Province were mainly installed before 2018; 2. All incoming and outgoing lines are circuit breakers. Before 2018, a centralized DTU was mainly used in cooperation with an outgoing line watchdog (panel-type FTU) or a microcomputer protection device to achieve distribution automation functions. After 2018, a distributed panel-type DTU or a primary-secondary integrated DTU is mainly used to achieve distribution automation functions; 3. Incoming line is a load switch and outgoing line is a combined electrical cabinet, mainly using a centralized DTU to achieve distribution automation functions. Most of the on-site equipment is old and renovated, and the outgoing lines generally do not have remote control functions.
[0003] Existing problems: The panel-type FTU, microcomputer protection devices produced by various manufacturers, distributed DTUs, and centralized DTUs installed before 2018 have been in operation for a long time, with poor stability, high failure rates, and some manufacturers have stopped producing related accessories; data is usually forwarded between microcomputer protection devices, FTUs, and DTUs through 232, 485 serial ports or switches. This communication method is prone to abnormalities, resulting in the failure of the "three remote" functions (remote measurement, remote signaling, remote control), and it is difficult to meet the latest standards of the power grid; equipment aging and shortage of accessories have increased the difficulty of operation and maintenance. Some discontinued terminal equipment has no accessories to replace, resulting in some power grids operating without protection, bringing great uncertainties to the power supply reliability and fault handling of the power grid. Content of the Utility Model
[0004] In order to overcome the above technical problems, the purpose of the utility model is to provide a ring main unit controller to solve the problems such as the communication method being prone to abnormalities, resulting in the failure of the "three remote" functions (remote measurement, remote signaling, remote control), and it being difficult to meet the latest standards of the power grid as mentioned in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A ring main unit controller includes: a ring main unit controller component group for controlling the ring main unit. The ring main unit controller component group includes a stainless steel box assembly. An operation switch and signal indicator lights are installed on the side of the stainless steel box assembly. A signal input aviation plug, a signal output aviation plug, and a changeover switch are installed on the side of the stainless steel box assembly. A relay and a terminal block are installed inside the stainless steel box assembly. The stainless steel box assembly includes a stainless steel box body and a stainless steel box cover. A connection component group is provided on one side of the stainless steel box body for connecting the stainless steel box body and the stainless steel box cover. The connection component group includes a pull ring member. A cross bar member is provided on the side of the pull ring member. A clamping block is provided at one end of the cross bar member. A spring member is provided outside the cross bar member. A plug rod is provided on the side of the clamping block. A sleeve housing is provided outside the plug rod.
[0007] Preferably: The signal input aviation plug and the signal output aviation plug are mainly used to connect primary equipment and a primary-secondary integrated DTU to achieve signal transmission and at the same time correctly indicate the signals of the ring main unit controller itself. The changeover switch mainly realizes the control locking of remote and local and outputs signals to the DTU at the same time.
[0008] Preferably: The operation switch, relay, signal indicator lights, and terminal block are the main electrical components connected in the control circuit to achieve remote control of local and remote.
[0009] Preferably: Two groups of connection component groups are provided, and the two groups of connection component groups are symmetrically distributed on both sides of the stainless steel box body.
[0010] Preferably: Anti-slip patterns are provided on the surface of the pull ring member. One end of the cross bar member is connected to the pull ring member, and the other end of the cross bar member is connected to the clamping block. The cross bar member is in sliding contact with the sleeve housing through a through hole, and the clamping block is in sliding contact with the sleeve housing through a chute.
[0011] Preferably: The clamping block contacts the plug rod through a card slot, and the plug rod contacts the sleeve housing through a slot.
[0012] Preferably: The plug rod is connected to the bottom of the stainless steel box cover. The sleeve housing is connected to the stainless steel box body through a groove. One end of the spring member is connected to the clamping block, and the other end of the spring member is connected to the sleeve housing.
[0013] Compared with the prior art, the beneficial effects of the present utility model are:
[0014] 1. This type of ring main unit controller is equipped with a component group of the ring main unit controller, which can replace the existing panel - type FTU, various microcomputer protection devices, and distributed DTUs one - to - one, or be installed in old ring main cabinets and switchgear intervals. Cooperating with the latest national grid standard of integrated primary and secondary DTU to achieve the three - remote functions of distribution automation. By using the ring main unit controller for transformation, the communication function of each automation terminal transmitting data through an intermediate can be directly removed, and the reliability problem of the power grid operation caused by the faults of the automation equipment itself can be greatly reduced. The three - remote signals between the primary equipment and the integrated primary and secondary DTU are built one - to - one with aviation plugs. At the same time, the function of local operation for each interval, the electrical interlock between local operation and remote operation, and intuitive on - off indicators are designed, meeting the relevant requirements of the distribution safety regulations for the operating mechanism. The transformation using the ring main unit controller is not restricted by the primary manufacturers of the ring main cabinet and the secondary automation terminal manufacturers such as old FTUs and microcomputer protection devices. It is plug - and - play, safe and convenient for live transformation construction, with a short construction period and expandable functions. The box body size and aviation plug type can be customized according to the on - site environment;
[0015] 2. This type of ring main unit controller is equipped with a connecting component group. When connecting the stainless - steel box body and the stainless - steel box cover, by covering the stainless - steel box cover on the stainless - steel box body, the plug rod is inserted into the slot of the sleeve housing. During the insertion process, the plug rod will squeeze and push open the latch, causing the latch to retract into the chute of the sleeve housing, and the spring member will store energy and contract. When the plug rod is completely inserted into the slot of the sleeve housing, the spring member will release the stored energy, causing the latch to pop out. The latch contacts the plug rod through the card slot and locks the position of the plug rod. At this time, the stainless - steel box body and the stainless - steel box cover are connected. When it is necessary to open the stainless - steel box body and the stainless - steel box cover, by pulling the pull - ring member, the cross - bar member and the latch can be pulled, and the spring member will store energy and contract. The latch disengages from the card slot of the plug rod. At this time, the stainless - steel box cover can be removed from the stainless - steel box body, completing the opening of the stainless - steel box assembly. The design of this connecting component group can improve the opening and closing efficiency of the stainless - steel box assembly, and can improve the work efficiency when adjusting, installing or maintaining the electronic equipment inside the stainless - steel box assembly in actual use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is the overall structural schematic diagram of the present utility model;
[0017] Figure 2 is the structural schematic diagram of the bottom of the stainless - steel box cover of the present utility model;
[0018] Figure 3 is the sectional structural schematic diagram of the connecting component group part of the present utility model;
[0019] Figure 4 is the structural schematic diagram of the sleeve housing part of the present utility model;
[0020] Figure 5 For the present utility model Figure 2 Schematic structural diagram of part A in
[0021] In the figure: 01, Ring main unit controller component group; 11, Stainless steel box assembly; 111, Stainless steel box body; 112, Stainless steel box cover; 12, Operating switch; 13, Signal indicator light; 02, Connection component group; 21, Pull ring piece; 22, Cross bar piece; 23, Block; 24, Spring piece; 25, Insert rod; 26, Sleeve housing. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] Please refer to Figures 1-5 , An embodiment provided by the present utility model: A ring main unit controller, comprising: a ring main unit controller component group 01, the ring main unit controller component group 01 is used to control the ring main unit, the ring main unit controller component group 01 includes a stainless steel box assembly 11, an operating switch 12 and a signal indicator light 13 are installed on the side of the stainless steel box assembly 11, a signal input aviation plug, a signal output aviation plug and a changeover switch are installed on the side of the stainless steel box assembly 11, a relay and a terminal block are installed inside the stainless steel box assembly 11, and the stainless steel box assembly 11 includes a stainless steel box body 111 and a stainless steel box cover 112; a connection component group 02 is provided on one side of the stainless steel box body 111, the connection component group 02 is used to connect the stainless steel box body 111 and the stainless steel box cover 112, the connection component group 02 includes a pull ring piece 21, a cross bar piece 22 is arranged on the side of the pull ring piece 21, a block 23 is arranged at one end of the cross bar piece 22, a spring piece 24 is arranged outside the cross bar piece 22, an insert rod 25 is arranged on the side of the block 23, and a sleeve housing 26 is arranged outside the insert rod 25.
[0024] The signal input aviation plug and the signal output aviation plug are mainly connected to primary equipment and the first and second integrated DTU to realize signal transmission, and at the same time realize the correct indication of the signal of the ring main unit controller body. The changeover switch mainly realizes the control lock of remote and local, and at the same time outputs a signal to the DTU.
[0025] The operating switch 12, the relay, the signal indicator light 13 and the terminal block are the main electrical components connected to the control circuit, realizing local and remote remote control.
[0026] There are two sets of connecting component groups 02, and the two sets of connecting component groups 02 are symmetrically distributed on both sides of the stainless steel box body 111.
[0027] The avoiding part of the pull ring part 21 is provided with anti-slip lines. One end of the cross bar part 22 is connected to the pull ring part 21, the other end of the cross bar part 22 is connected to the clamping block 23. The cross bar part 22 is in sliding contact with the sleeve housing 26 through a through hole, and the clamping block 23 is in sliding contact with the sleeve housing 26 through a chute.
[0028] The clamping block 23 contacts the insertion rod 25 through a card slot, and the insertion rod 25 contacts the sleeve housing 26 through a slot.
[0029] The insertion rod 25 is connected to the bottom of the stainless steel box cover 112, the sleeve housing 26 is connected to the stainless steel box body 111 through a groove. One end of the spring part 24 is connected to the clamping block 23, and the other end of the spring part 24 is connected to the sleeve housing 26.
[0030] Working principle: It can replace the existing panel-type FTUs, various microcomputer protection devices, and distributed DTUs one by one, or be installed in old ring main units and switchgear intervals. Cooperating with the latest State Grid standard for the integration of primary and secondary DTUs to achieve the three-remote functions of distribution automation. By transforming the ring main unit controller, the communication function of each automation terminal for forwarding data through an intermediate device can be directly removed, which can greatly reduce the problems of grid operation reliability caused by the failures of the automation equipment itself. The three-remote signals between the primary equipment and the integrated primary and secondary DTUs are built one by one through aviation plugs. At the same time, the function of local operation for each interval, the electrical interlock between local operation and remote operation, and intuitive opening and closing indicator lights are designed, meeting the relevant requirements of the distribution safety regulations for the operating mechanism. The transformation using the ring main unit controller is not restricted by the primary equipment manufacturers of the ring main unit and the secondary automation terminal manufacturers such as old FTUs and microcomputer protection devices. It is plug-and-play, and the live transformation construction is safe, convenient, with a short construction period, and the functions can be expanded. The box size and aviation plug type can be customized according to the on-site environment. By replacing the existing panel-type FTUs, microcomputer protection devices, and distributed DTUs one by one, or installing them in old ring main units and switchgear intervals, it can effectively reduce the operation instability problems caused by equipment aging. The new equipment meets the latest State Grid standard and realizes the three-remote functions of distribution automation through the integrated primary and secondary DTUs, ensuring the stability and reliability of the system. The transformation scheme of the ring main unit controller cancels the traditional communication method of forwarding data through an intermediate device and directly removes the redundant communication links of each automation terminal. This not only greatly reduces the possibility of communication failures but also reduces the problems of grid operation unreliability caused by the failures of the automation equipment itself. The newly designed ring main unit controller realizes the docking of the three-remote signals between the primary equipment and the integrated primary and secondary DTUs through aviation plugs, and designs the local operation function, electrical interlock mechanism, and intuitive opening and closing indicator lights to ensure the safety and intuitiveness of local and remote operations. This design meets the requirements of the distribution safety regulations for the operating mechanism and ensures the safety and convenience of operations. This transformation scheme is not restricted by the original primary equipment manufacturers of the ring main unit and the secondary automation terminal equipment manufacturers such as old FTUs and microcomputer protection devices, and has the characteristics of plug-and-play. During the construction process, no complex debugging is required, and the live transformation construction is safe, convenient, with a short construction period. At the same time, the box size and aviation plug type of the equipment can be customized according to the on-site environment, with high adaptability. The transformed ring main unit controller not only has the functions required currently but also reserves interfaces and design space for future function expansion, enabling the grid to quickly respond and upgrade corresponding functions when future technology upgrades and demand changes occur;
[0031] By covering the stainless - steel box cover 112 on the stainless - steel box body 111, the insertion rod 25 is inserted into the slot of the sleeve housing 26. During the insertion process, it will squeeze and push open the latch 23, causing the latch 23 to retract into the chute of the sleeve housing 26, and the spring member 24 will store energy and contract. When the insertion rod 25 is completely inserted into the slot of the sleeve housing 26, the spring member 24 will release the stored energy, causing the latch 23 to pop out. The latch 23 contacts the insertion rod 25 through the card slot and limits and locks the insertion rod 25. At this time, the stainless - steel box body 111 and the stainless - steel box cover 112 are connected. When it is necessary to open the stainless - steel box body 111 and the stainless - steel box cover 112, by pulling the pull - ring member 21, the cross - bar member 22 and the latch 23 can be pulled, and the spring member 24 will store energy and contract. The latch 23 releases the contact with the card slot of the insertion rod 25. At this time, the stainless - steel box cover 112 can be removed from the stainless - steel box body 111, completing the opening of the stainless - steel box assembly 11. The design of this connection component group 02 can improve the opening and closing efficiency of the stainless - steel box assembly 11. In actual use, when adjusting, installing, or maintaining the electronic equipment inside the stainless - steel box assembly 11, the work efficiency can be improved.
[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A ring main unit controller, characterized in that, Comprising: A ring main unit controller component group (01) for controlling a ring main unit. The ring main unit controller component group (01) includes a stainless steel box assembly (11). An operation switch (12) and a signal indicator light (13) are installed on the side of the stainless steel box assembly (11). A signal input aviation plug, a signal output aviation plug, and a changeover switch are installed on the side of the stainless steel box assembly (11). A relay and a terminal block are installed inside the stainless steel box assembly (11). The stainless steel box assembly (11) includes a stainless steel box body (111) and a stainless steel box cover (112). A connecting component group (02) is provided on one side of the stainless steel box body (111) for connecting the stainless steel box body (111) and the stainless steel box cover (112). The connecting component group (02) includes a pull ring member (21). A cross bar member (22) is provided on the side of the pull ring member (21). A clamping block (23) is provided at one end of the cross bar member (22). A spring member (24) is provided outside the cross bar member (22). A plug rod (25) is provided on the side of the clamping block (23). A sleeve housing (26) is provided outside the plug rod (25).
2. The unit controller of a ring main unit according to claim 1, characterized in that: The signal input aviation plug and the signal output aviation plug are mainly used to connect primary equipment and a primary-secondary integrated DTU to achieve signal transmission and at the same time correctly indicate the signals of the ring main unit controller body. The changeover switch is mainly used to achieve remote-local control locking and at the same time output signals to the DTU.
3. The unit controller of a ring main unit according to claim 1, wherein: The operation switch (12), the relay, the signal indicator light (13), and the terminal block are the main electrical components connected in the control circuit to achieve local and remote remote control.
4. The unit controller of a ring main unit according to claim 1, wherein: Two groups of the connecting component groups (02) are provided, and the two groups of connecting component groups (02) are symmetrically distributed on both sides of the stainless steel box body (111).
5. The unit controller of a ring main unit according to claim 1, characterized in that: Anti-slip patterns are provided on the surface of the pull ring member (21). One end of the cross bar member (22) is connected to the pull ring member (21), and the other end of the cross bar member (22) is connected to the clamping block (23). The cross bar member (22) is in sliding contact with the sleeve housing (26) through a through hole, and the clamping block (23) is in sliding contact with the sleeve housing (26) through a chute.
6. The unit controller of a ring main unit according to claim 1, characterized in that: The clamping block (23) is in contact with the plug rod (25) through a card slot, and the plug rod (25) is in contact with the sleeve housing (26) through a slot.
7. The unit controller of a ring main unit according to claim 1, characterized in that: The plug rod (25) is connected to the bottom of the stainless steel box cover (112). The sleeve housing (26) is connected to the stainless steel box body (111) through a groove. One end of the spring member (24) is connected to the clamping block (23), and the other end of the spring member (24) is connected to the sleeve housing (26).