Joint power-off protection intelligent bus duct system

Abstract

The application relates to the technical field of intelligent bus duct systems, and discloses an intelligent bus duct system with joint power-off protection, which solves the problem that an intelligent bus duct system cannot achieve joint power-off protection effect during use, and comprises six core modules, namely, a bus duct conductive main module, a joint monitoring and collecting module, a sectional power-off protection module, a central control communication module, a man-machine interactive operation and maintenance module and a fault early warning and alarm module; the bus duct conductive main module is a power supply carrier of the system, and comprises multiple standard bus duct units, plug-in conductive joints, insulation sheaths and grounding copper bar units; the intelligent bus duct system has the functions of state collection, joint overheat power-off, sectional isolation and remote operation and maintenance, so that the effect of individually powering off a fault joint and continuously supplying power to the remaining loops can be achieved, and therefore, the intelligent bus duct system can achieve the effect of joint power-off protection.

Description

Technical Field

[0001] This invention belongs to the technical field of intelligent busbar trunking systems, specifically an intelligent busbar trunking system with joint power failure protection. Background Technology

[0002] Busbar trunking is a closed conductor system used for high-current power transmission and distribution. It consists of multiple copper or aluminum conductors insulated and encapsulated in a metal shell, forming a modular and flexibly expandable "transmission trunk line." It is mainly used to replace traditional multiple parallel cables for efficient power distribution in modern buildings and industrial power distribution. Intelligent busbar trunking systems are modern power distribution devices that integrate power transmission, distribution, and monitoring. Through built-in sensors, control modules, and IoT technology, they can monitor and intelligently manage parameters such as current, voltage, and temperature in real time, thereby improving the operating efficiency, safety, and reliability of the power system. As the core carrier for high-current power distribution in high-rise buildings, factories, and data centers, intelligent busbar trunking systems extend power supply lines by splicing multiple busbar sections through plug-in joints. However, during use, intelligent busbar trunking systems lack the integrated functions of status acquisition, joint overheat protection, segmented isolation, and remote operation and maintenance. They cannot achieve the effect of disconnecting power to a faulty joint while maintaining continuous power supply to the remaining circuits, thus failing to achieve the joint power-off protection effect. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, this invention provides an intelligent busbar trunking system with joint power-off protection. This effectively solves the problem that the intelligent busbar trunking system does not have the integrated functions of status acquisition, joint overheating power-off, segmented isolation and remote operation and maintenance during use, and cannot achieve the effect of power-off of a faulty joint while the other circuits continue to be powered, thus causing the intelligent busbar trunking system to fail to achieve the joint power-off protection effect.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an intelligent busbar trunking system with joint power failure protection, comprising six core modules: a busbar trunking conductive main module, a joint monitoring and acquisition module, a segmented power failure protection module, a central control and communication module, a human-machine interaction operation and maintenance module, and a fault early warning and alarm module;

[0005] The busbar trunking conductive main module is the power supply carrier of the system. It includes multiple standard busbar trunking units, plug-in conductive connectors, insulating sheaths, and grounding copper busbar units. Each pair of standard busbar trunking units is connected by plug-in conductive connectors. The insulating sheaths cover the outside of the plug-in conductive connectors. The grounding copper busbar units are laid along the entire length of the busbar trunking and reliably connected to the metal shells of each connector.

[0006] Each connector monitoring and acquisition module is installed on the outside of each plug-in conductive connector. It includes a temperature sensing unit, a resistance detection unit, a leakage current acquisition unit, a vibration sensing unit, and an analog-to-digital conversion unit. The temperature sensing unit collects real-time temperature data in close contact with the metal contact surface of the connector. The resistance detection unit collects real-time contact resistance data of the connector. The leakage current acquisition unit monitors the insulation leakage current of the connector. The vibration sensing unit collects the vibration data of the busbar operation. All sensing data are converted into digital signals and output through the analog-to-digital conversion unit.

[0007] Each pair of busbar trunking units is equipped with a set of sectional power failure protection modules. The sectional power failure protection module includes an electromagnetic disconnecting switch unit, a drive execution unit, a current sampling unit, and an arc extinguishing unit. The electromagnetic disconnecting switch unit is connected in series inside the conductive circuit of the busbar trunking. The drive execution unit receives the opening / closing command issued by the central control communication module. The current sampling unit collects the load current of this busbar section. The arc extinguishing unit eliminates the arc during disconnection to avoid arc burning of the joint.

[0008] The central control communication module is the core of the system's overall control, comprising a data aggregation and processing unit, a logic judgment unit, a wired / wireless dual communication unit, and a storage unit. The data aggregation and processing unit polls and collects operating data from all connector monitoring and acquisition modules and the segmented power failure protection module. The logic judgment unit has built-in temperature threshold, contact resistance threshold, leakage current threshold, and overcurrent threshold to determine the fault level. The wired / wireless dual communication unit enables local module interaction and remote platform data transmission. The storage unit records connector operating data and fault records at all times.

[0009] The fault early warning and alarm module includes a local audible and visual alarm unit, a remote push unit, and a fault location unit. The fault location unit matches the corresponding plug-in conductive connector number according to the monitoring data. The local audible and visual alarm unit provides on-site light and buzzer indication of the fault location. The remote push unit pushes the fault type, connector number, and fault parameters to the operation and maintenance terminal.

[0010] The human-machine interaction operation and maintenance module includes a touch display unit, a parameter setting unit, and a manual control unit. The touch display unit displays the temperature, resistance, and current status of all connectors in real time. The parameter setting unit allows for customization of various protection thresholds. The manual control unit supports remote / local manual disconnection of any segment of the power outage protection module by operation and maintenance personnel.

[0011] The main busbar conductive module consists of multiple standard busbar units connected in series via plug-in conductive connectors. A segmented power failure protection module is embedded in series in the conductive loop between every two busbar units. The grounding copper busbar unit grounds all connector metal shells and the outer shells of each module. All connector monitoring and acquisition modules and segmented power failure protection modules are connected in parallel to the input of the central control communication module via a wired RS485 bus. The output of the central control communication module is electrically connected to the fault early warning alarm module and the human-machine interaction operation and maintenance module. The central control communication module is connected to the remote operation and maintenance backend via wireless 4G / Ethernet.

[0012] Furthermore, the plug-in conductive connector is equipped with an elastic silver-plated conductive spring to reduce the initial contact resistance, and a matching annular thermally conductive pad is provided for the temperature sensing unit to be fitted and installed.

[0013] Furthermore, the electromagnetic disconnecting switch unit of the segmented power failure protection module has two levels of disconnection logic: a first-level early warning current limiting and a second-level complete fault disconnection.

[0014] Furthermore, the logic judgment unit distinguishes between three levels of faults: minor warning, general fault, and serious fire risk fault, corresponding to different protection actions.

[0015] Furthermore, the storage unit has a power failure data caching function, which automatically restores historical fault records after a power failure and restart.

[0016] Furthermore, the vibration sensing unit is used to identify early signs of joint loosening caused by thermal expansion and contraction of the busbar trunking and equipment resonance.

[0017] Furthermore, the remote push unit supports simultaneous push of fault information through both mobile APP and monitoring room host computer.

[0018] Furthermore, the manual control unit is equipped with an access control encryption mechanism, allowing only authorized maintenance accounts to perform manual opening and closing operations.

[0019] Furthermore, the arc-extinguishing unit adopts a ceramic arc-extinguishing grid structure, which is suitable for high-current busbar interruption conditions.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1) In operation, this invention achieves precise fault isolation through modular layered protection. It equips each busbar joint with an independent monitoring unit and each busbar section with an independent sectional power-off protection module. When the joint experiences overheating or loosening, only the faulty busbar section is disconnected, while the remaining power supply circuits continue to operate. This avoids the power outage caused by the tripping of the main switch of the traditional busbar trunking, and significantly reduces the losses from power distribution downtime.

[0022] 2) In operation, this invention achieves early fault prediction through multi-dimensional synchronous monitoring. By jointly collecting multiple parameters such as temperature, contact resistance, leakage current, and vibration, it can identify early signs of loose joints, oxidation, and insulation damage, and issue graded warnings. It can push warning information before the risk of fire occurs, thus eliminating the fire hazard of busbar joints from the source.

[0023] 3) In operation, this invention achieves fast response speed through integrated collaborative control, and realizes unified scheduling of monitoring, protection, alarm and human-machine interaction modules by the central control communication module. The signal wired transmission has low latency, and the entire process from fault judgment to disconnection is completed in milliseconds. Combined with ceramic arc extinguishing unit, it eliminates the disconnection arc and protects the busbar conductive structure from damage.

[0024] 4) In operation, the present invention displays the status of all connectors locally in real time through the human-computer interaction module, and pushes the fault early warning module to the operation and maintenance terminal in a synchronous manner. It has a built-in historical data storage function, which can trace the long-term operating status of the connectors, making it easier for operation and maintenance personnel to formulate periodic maintenance plans and reduce the cost of manual inspection. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0026] In the attached diagram:

[0027] Figure 1 This is a schematic diagram of an intelligent busbar trunking system with connector power failure protection according to the present invention.

[0028] Figure 2 This is a schematic diagram of the main conductive module of the busbar trunking of the present invention;

[0029] Figure 3 This is a schematic diagram of the connector monitoring and acquisition module of the present invention;

[0030] Figure 4 This is a schematic diagram of the segmented power failure protection module of the present invention;

[0031] Figure 5 This is a schematic diagram of the central control communication module of the present invention;

[0032] Figure 6 This is a schematic diagram of the fault early warning alarm module of the present invention;

[0033] Figure 7 This is a schematic diagram of the human-computer interaction operation and maintenance module of the present invention.

[0034] In the diagram: 1. Busbar trunking conductive main module; 101. Standard busbar trunking unit; 102. Plug-in conductive connector; 103. Insulating sheath; 104. Grounding copper busbar unit; 2. Connector monitoring and acquisition module; 201. Temperature sensing unit; 202. Resistance detection unit; 203. Leakage current acquisition unit; 204. Vibration sensing unit; 205. Analog-to-digital conversion unit; 3. Segmented power failure protection module; 301. Electromagnetic disconnect switch unit; 302. Drive execution unit; 303. Electrical... Stream sampling unit; 304, arc extinguishing unit; 4, central control communication module; 401, data aggregation and processing unit; 402, logic judgment unit; 403, wired / wireless dual communication unit; 404, storage unit; 5, fault early warning alarm module; 501, local audible and visual alarm unit; 502, remote push unit; 503, fault location unit; 6, human-machine interaction operation and maintenance module; 601, touch display unit; 602, parameter setting unit; 603, manual control unit. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] Example 1, by Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The present invention comprises a busbar trunking conductive main module 1, a joint monitoring and acquisition module 2, a segmented power failure protection module 3, a central control and communication module 4, a fault early warning and alarm module 5, and a human-machine interaction operation and maintenance module 6. During use, the interaction of the busbar trunking conductive main module 1, joint monitoring and acquisition module 2, segmented power failure protection module 3, central control and communication module 4, fault early warning and alarm module 5, and human-machine interaction operation and maintenance module 6 enables the intelligent busbar trunking system to integrate status acquisition, joint overheating power failure, segmented isolation, and remote operation and maintenance functions. This allows for the isolated power failure of faulty joints while maintaining continuous power supply to other circuits, thus ensuring the intelligent busbar trunking system achieves joint power failure protection.

[0037] The main conductive module 1 of the busbar trunking serves as the power distribution carrier, comprising multiple standard busbar trunking units 101, plug-in conductive connectors 102, insulating sheaths 103, and grounding copper busbar units 104. The plug-in conductive connectors 102 are internally equipped with elastic silver-plated conductive springs, and externally fitted with annular heat-conducting pads. Temperature sensing units 201 are in close contact with the annular heat-conducting pads to collect the temperature of the connector contact surface. Adjacent standard busbar trunking units 101 are connected via plug-in conductive connectors 102. A connector monitoring and acquisition module 2 is mounted on the outside of each plug-in conductive connector 102. All connector monitoring and acquisition modules 2 and segmented power failure protection modules 3 are connected to the central control communication module 4. A set of segmented power failure protection modules 3 is connected in series between every two standard busbar trunking units 101. Multiple standard busbar trunking units 101 within the main conductive module 1 are connected end-to-end via plug-in conductive connectors 102. The segmented power failure protection modules 3 are embedded in the conductive circuits of two busbar trunking units in series. The grounding copper busbar units 104 uniformly connect all connector housings to the housings of each module to achieve overall grounding.

[0038] The connector monitoring and acquisition module 2 includes a temperature sensing unit 201, a resistance detection unit 202, a leakage current acquisition unit 203, a vibration sensing unit 204, and an analog-to-digital conversion unit 205. The segmented power-off protection module 3 includes an electromagnetic disconnecting switch unit 301, a drive execution unit 302, a current sampling unit 303, and an arc-extinguishing unit 304. The electromagnetic disconnecting switch unit 301 has two levels of execution logic. When it receives a level-two fault command, it performs current-limiting protection. When it receives a level-three danger command, it completely disconnects the faulty segment bus. The arc-extinguishing unit 304 uses a ceramic arc-extinguishing grid to eliminate the disconnection arc. The central control communication module 4 includes a data aggregation and processing unit 401, a logic judgment unit 402, a wired / wireless dual communication unit 403, and a storage unit 404. The logic judgment unit 402 has built-in three-level fault judgment thresholds, which are divided into a level-one warning threshold, a level-two fault current-limiting threshold, and a level-three danger disconnection threshold. Correspondingly, it outputs three control commands: warning, current-limiting, and segmented power-off. The storage unit 404 has a power-off caching function, and automatically restores all historical operating data, early warning records, and fault tripping records after the system is restarted after a power outage. The central control communication module 4 is electrically connected to the fault early warning alarm module 5 and the human-machine interaction operation and maintenance module 6. The fault early warning alarm module 5 includes a local audible and visual alarm unit 501, a remote push unit 502, and a fault location unit 503. The fault location unit 503 matches the unique number of the plug-in conductive connector 102 with the data uploaded by the connector monitoring and acquisition module 2, and synchronously outputs the fault location, fault type, and out-of-range parameters to the local audible and visual alarm unit 501 and the remote push unit 502. The human-machine interaction operation and maintenance module 6 includes a touch display unit 601, a parameter setting unit 602, and a manual control unit 603. The manual control unit 603 is equipped with a hierarchical permission encryption mechanism, which distinguishes between three types of permissions: inspection and viewing, parameter modification, and tripping operation. Only the administrator is authorized to perform bus section tripping operation.

[0039] The connector monitoring and acquisition module 2 and the segmented power failure protection module 3 are connected in parallel to the input terminal of the central control communication module 4 via an RS485 bus; the output terminal of the central control communication module 4 is connected to the fault early warning alarm module 5 and the human-machine interaction operation and maintenance module 6 respectively, and is connected to the remote operation and maintenance backend through the wired / wireless dual communication unit 403.

[0040] In Example 2, based on Example 1, the busbar trunking conductive main module 1 includes six standard busbar trunking units 101, with a total of five plug-in conductive connectors 102. Each connector is independently equipped with a connector monitoring and acquisition module 2 on its outside. A set of segmented power failure protection modules 3 is connected in series between every two standard busbar trunking units 101.

[0041] All five sets of connector monitoring and acquisition modules 2 and four groups of sectional power failure protection modules 3 are connected in parallel to the data aggregation and processing unit 401 of the central control communication module 4 via RS485 wired bus; the central control communication module 4 is electrically connected to the fault early warning alarm module 5 and the human-machine interaction operation and maintenance module 6 respectively; the central control communication module 4 is connected to the remote back-end of the factory monitoring room via Ethernet.

[0042] Parameter configuration: The logic judgment unit 402 has a built-in first-level warning temperature of 70℃, a second-level fault temperature of 90℃, and a third-level danger temperature of 120℃; the contact resistance warning threshold is 0.08Ω, the fault threshold is 0.15Ω, and the vibration threshold is 0.5mm / s;

[0043] Working process: The plant equipment is running at full load. The connector monitoring and acquisition module 2 collects and uploads the temperature and resistance data of five connectors in real time. If the No. 3 conductive connector 102 is vibrated for a long time, causing the spring to loosen and the contact resistance to rise to 0.09Ω, the system triggers a first-level warning. The local audible and visual alarm unit 501 flashes yellow, and the maintenance mobile phone receives a warning push. After the maintenance personnel tighten the connector on-site, the resistance drops back to 0.02Ω, and the warning is automatically cleared. If not handled in time, the connector temperature rises to 122℃, reaching the third-level danger threshold. The logic judgment unit 402 issues a trip command, and the electromagnetic trip switch unit 301 of the corresponding segmented power failure protection module 3 quickly trips, cutting off only the third and fourth busbars where the No. 3 connector is located. The remaining first, second, fifth, and sixth busbars in the plant continue to be powered. The fault location unit 503 directly pushes the "No. 3 connector overheating and circuit breaking" information to the computer room and the maintenance mobile phone.

[0044] Working principle: During operation, the system consists of four interconnected layers: data acquisition layer, central control layer, execution protection layer, and operation and maintenance alarm layer.

[0045] The data acquisition layer consists of the bus trunking conductive main module 1 carrying the power distribution circuit. All plug-in conductive connectors 102 are equipped with connector monitoring and acquisition modules 2 to synchronously collect four types of status parameters: temperature, contact resistance, leakage current, and vibration. The segmented power failure protection module 3 has a built-in current sampling unit 303 to collect the load current of each segment. All collected signals are uniformly uploaded to the central control layer through the RS485 bus.

[0046] The central control layer is where the data collection and processing unit 401 of the central control communication module 4 uniformly receives the data collected from the entire system. The logic judgment unit 402 compares the built-in multi-level protection thresholds to distinguish between three types of operating conditions: early warning, general fault, and dangerous fault. Based on the fault level, it outputs corresponding control commands. The storage unit 404 synchronously records all operating and fault data. The wired / wireless dual communication unit 403 transmits local control signals and remote operation and maintenance data bidirectionally.

[0047] The protection layer receives instructions from the central control layer, and the segmented power failure protection module 3 performs current limiting or complete disconnection operations according to the instructions; the electromagnetic disconnection switch unit 301 is responsible for circuit connection and disconnection, and the arc extinguishing unit 304 eliminates the disconnection arc and avoids joint erosion; it realizes fault segment isolation and continuous power supply to non-faulty busbars.

[0048] The operation and maintenance alarm layer receives fault signals from the central control layer through the fault early warning alarm module 5, completes the accurate numbering and location of faulty connectors, and simultaneously starts local audible and visual alarms and remote APP / computer room push notifications; the human-machine interaction operation and maintenance module 6 displays the operating parameters of the entire system connectors in real time, and supports operation and maintenance personnel to modify protection thresholds, manually control the opening and closing of circuit breakers, and retrieve historical fault data.

[0049] During normal operation, the four-layer module continuously interacts in a loop, and under normal circumstances, it only monitors and records data. When a joint abnormality occurs, it triggers early warning, current limiting, and segmented power outage protection actions step by step. At the same time, it pushes fault information to guide operation and maintenance. After the maintenance is completed, it manually closes the switch to restore the normal power supply to the bus. The entire process achieves precise power outage protection for joint faults without affecting the operation of fault-free bus circuits.

Claims

1. An intelligent busbar trunking system with joint power failure protection, comprising a busbar trunking conductive main module (1), a joint monitoring and acquisition module (2), a segmented power failure protection module (3), a central control communication module (4), a fault early warning and alarm module (5), and a human-machine interaction operation and maintenance module (6), characterized in that: The busbar trunking conductive main module (1) is a power distribution carrier, which includes multiple standard busbar trunking units (101), plug-in conductive connectors (102), insulating sheaths (103), and grounding copper busbar units (104). Adjacent standard busbar trunking units (101) are connected through plug-in conductive connectors (102). Each plug-in conductive connector (102) is equipped with a connector monitoring and acquisition module (2) on its outer side. The connector monitoring and acquisition module (2) includes a temperature sensing unit (201), a resistance detection unit (202), a leakage current acquisition unit (203), a vibration sensing unit (204), and an analog-to-digital conversion unit (205). A set of segmented power failure protection modules (3) are connected in series between every two standard bus trunking units (101). The segmented power failure protection module (3) includes an electromagnetic disconnecting switch unit (301), a drive execution unit (302), a current sampling unit (303), and an arc extinguishing unit (304). All connector monitoring and acquisition module (2), segmented power failure protection module (3) communication connection central control communication module (4), central control communication module (4) includes data collection and processing unit (401), logic judgment unit (402), wired / wireless dual communication unit (403), storage unit (404). The central control communication module (4) is electrically connected to the fault early warning alarm module (5) and the human-machine interaction operation and maintenance module (6); the fault early warning alarm module (5) includes a local sound and light alarm unit (501), a remote push unit (502), and a fault location unit (503); the human-machine interaction operation and maintenance module (6) includes a touch display unit (601), a parameter setting unit (602), and a manual control unit (603).

2. The intelligent busbar trunking system with connector power failure protection according to claim 1, characterized in that: In terms of physical conductive connection, multiple standard busbar units (101) in the main conductive module (1) of the busbar trunking are connected in series end to end through plug-in conductive connectors (102), and the segmented power failure protection module (3) is embedded in the conductive circuit of the two busbar trunking segments in series. The grounding copper busbar unit (104) is uniformly connected to all connector shells and each module shell to achieve overall grounding.

3. The intelligent busbar trunking system with connector power failure protection according to claim 1, characterized in that: In terms of signal communication connection, the connector monitoring and acquisition module (2) and the segmented power failure protection module (3) are connected in parallel to the input terminal of the central control communication module (4) via RS485 bus; the output terminal of the central control communication module (4) is connected to the fault early warning alarm module (5) and the human-machine interaction operation and maintenance module (6) respectively, and is connected to the remote operation and maintenance backend through the wired / wireless dual communication unit (403).

4. The intelligent busbar trunking system with connector power failure protection according to claim 1, characterized in that: The plug-in conductive connector (102) is provided with an elastic silver-plated conductive spring inside, and an annular heat-conducting pad is provided on the outside of the connector. The temperature sensing unit (201) is in close contact with the annular heat-conducting pad to collect the temperature of the connector contact surface.

5. The intelligent busbar trunking system with connector power failure protection according to claim 1, characterized in that: The logic judgment unit (402) has a built-in three-level fault judgment threshold, which is divided into a first-level early warning threshold, a second-level fault current limiting threshold, and a third-level danger disconnection threshold, and outputs three control commands: early warning, current limiting, and segmented power disconnection.

6. The intelligent busbar trunking system with connector power failure protection according to claim 1, characterized in that: The electromagnetic disconnecting switch unit (301) has two levels of execution logic. When it receives a level two fault command, it performs current limiting protection. When it receives a level three danger command, it completely disconnects the faulty segment bus. The arc extinguishing unit (304) uses a ceramic arc extinguishing grid to eliminate the disconnecting arc.

7. The intelligent busbar trunking system with connector power failure protection according to claim 1, characterized in that: The storage unit (404) has a power failure caching function, and automatically restores all historical operating data, early warning records, and fault trip records after the system is powered off and restarted.

8. The intelligent busbar trunking system with connector power failure protection according to claim 1, characterized in that: The manual control unit (603) is equipped with a hierarchical permission encryption mechanism, which distinguishes between three types of permissions: inspection and viewing, parameter modification, and opening and closing operations. Only the administrator is authorized to perform bus section opening and closing operations.

9. The intelligent busbar trunking system with connector power failure protection according to claim 1, characterized in that: The fault location unit (503) matches the unique number of the plug-in conductive connector (102) with the data uploaded by the connector monitoring and acquisition module (2), and synchronously outputs the fault location, fault type, and out-of-standard parameters to the local audible and visual alarm unit (501) and the remote push unit (502).

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