Movable flexible combined AC power supply hot plug control module

Abstract

The invention provides a mobile flexible combined AC power supply hot plug control module, which comprises an intelligent management controller, an on-line hot plug rapid interface, an input three-phase bus and an output power supply distribution unit, and is characterized in that the intelligent management controller realizes accurate monitoring of input electric quantity and output load by directly collecting external AC signals; the online hot plug interface allows the module to be quickly connected or disconnected under the condition of not interrupting a power supply; the input three-phase bus adopts a copper bar and a plastic package structure, so that the stability of power supply input is ensured; and the output power distribution unit monitors a feeder load power supply loop through an air switch and an intelligent detection terminal. A reliable and convenient alternating current power supply is provided for transformer substation equipment, the safety and efficiency of transformer substation technical improvement are remarkably improved, and meanwhile the input of manpower and financial resources is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of AC power supply for power system stations, and in particular to a mobile flexible combined AC power supply hot-plug control module. Background Art

[0002] The AC power supply for power substations in the power system is responsible for all equipment and electricity used in substations. Especially with the rapid development of digitalization of substation equipment, the AC power supply system for substations plays an important role, and the reliability of its operating status, the convenience of daily operation and maintenance, and the effectiveness of technical transformation work are increasingly required. Especially for the technical transformation process of the system, it is not allowed to have many power outages, long working hours, many temporary power supply equipment, and different equipment configurations at different construction sites with different capacity levels are very different, and the compatibility is poor. Summary of the invention

[0003] The purpose of the present invention is to propose a mobile flexible combined AC power hot-swap control module, which solves the four high problems of high temporary equipment investment cost, high work manpower investment cost, high operation time investment cost and high on-site operation risk during the technical transformation and operation and maintenance of AC power supplies for power system stations.

[0004] To achieve the above object, the present invention provides a mobile flexible combined AC power hot-swap control module, comprising:

[0005] An intelligent management controller (1) is used to obtain input power, output load, and output distribution unit status, and to perform logic judgment and hot plug permission and blocking control;

[0006] The input quick interface (2) is used for fast and reliable access and self-locking of the input three-phase power input and the output of the output distribution unit;

[0007] An input three-phase busbar (3) is used to distribute electricity;

[0008] An output power distribution unit (4) is used to form a feeder load power supply circuit;

[0009] The ultra-wide range power supply unit (5) is used to provide working power to the internal circuit of the hot-swap control module.

[0010] Preferably, the input power and output load of the intelligent management controller (1) are collected by directly collecting the AC signal after the zero-line is raised externally, and the collection of the output distribution unit status includes the collection of the position status and load status of the output distribution unit (4).

[0011] Preferably, the input quick interface (2) comprises a socket, a plug and a lock, the socket is made of an insulating material wrapped with a conductive material, the plug is designed with a multi-layer spring contact coil, and the lock is placed on the side of the plug. The lock is used to automatically lock the plug after it is inserted into the socket, and when the plug is pulled out, it needs to be manually pressed to unlock.

[0012] Preferably, the input three-phase busbar (3) adopts a structure combining a copper busbar and a plastic seal, and the copper busbar is connected to the online hot-swap quick interface (2) and the output power distribution unit (4).

[0013] Preferably, the output power distribution unit (4) comprises a circuit breaker and an intelligent detection terminal, the circuit breaker is a switch for supplying power to the feeder load, and the intelligent detection terminal completes the collection of the feeder load status and the circuit breaker switch status.

[0014] Preferably, the ultra-wide range power supply unit (5) comprises a U front-stage rectifier filter circuit, a high-voltage and high-frequency converter power supply chip, a low-voltage DC-DC isolation power supply circuit, an output filter circuit and its auxiliary peripheral devices; the U front-stage rectifier filter circuit is used to convert the input AC power into DC power for input to the rear-stage circuit; the high-voltage and high-frequency converter power supply chip adopts a high-voltage step-down AC-DC conversion, which is suitable for 20-385VAC ultra-wide voltage input and meets the requirement that the circuit power supply continuous current is not more than 500mA. Its input AC power is taken from the input bus of the module unit, and a 12V DC voltage is output to the rear-stage low-voltage DC-DC isolation power supply circuit and its auxiliary peripheral devices, finally realizing the three-power output of ±5V and 3.3V, which is processed by the output filter circuit to provide the internal circuit working power.

[0015] The present invention has the following beneficial effects:

[0016] The present invention is used in the field work process of operation, maintenance, inspection and technical transformation and overhaul of AC power supply for power system stations, and can also be converted to the application of operating equipment, providing a means to solve the problems of field application from the equipment technology; the present invention adopts hot-pluggable intelligent power supply module unitization, each intelligent power supply module unit has a complete input three-phase bus, output power distribution unit, fast interface and intelligent management controller, and can realize online hot plugging with the power supply bus. There is no master-slave flexible combination between the units, which can achieve rapid configuration, rapid movement and combination according to load requirements, save manpower and financial resources, and improve the safety and efficiency of technical transformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The present invention is a block diagram of a mobile flexible combined AC power hot-swap control module.

[0019] Figure 2 4 is a principle block diagram of an ultra-wide range power supply unit in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The detailed description of the accompanying drawings is intended as an illustration of the current embodiments of the present invention and is not intended to represent the only form in which the present invention can be implemented. It should be understood that the same or equivalent functions can be accomplished by different embodiments that are intended to be included in the spirit and scope of the present invention.

[0021] See also Figure 1 An embodiment of the present invention provides a mobile flexible combined AC power hot-swappable control module, including an input quick interface 1, an intelligent management controller 2, an input three-phase bus 3, an output power distribution unit 4, and an ultra-wide range power supply unit 5.

[0022] The intelligent management controller 2 is used to obtain the input power, output load, output distribution unit status, and perform logic judgment and hot plug permission and locking control;

[0023] The input quick interface 1 is used for fast and reliable access and self-locking of the input three-phase electrical input and the output of the output distribution unit;

[0024] The input three-phase bus 3 is used to distribute electricity;

[0025] The output power distribution unit 4 is used to form a feeder load power supply loop;

[0026] The ultra-wide range power supply unit 5 is used to provide working power to the internal circuit of the hot-swap control module.

[0027] Specifically, the intelligent management controller 2 is responsible for collecting the status information of the input power, output load and output distribution unit. Based on the collected data, the intelligent management controller performs logical judgment to ensure the stable operation of the power supply system. The controller allows or locks the hot plug operation to ensure that the hot plug operation is performed under safe conditions.

[0028] The input quick interface 1 allows the three-phase electrical input and the output of the output distribution unit to be connected quickly and reliably. After connection, the interface can be self-locking to ensure the stability and safety of the connection.

[0029] The input three-phase bus 3 distributes the input electric energy to each output power distribution unit and is a channel for electric energy transmission.

[0030] The output power distribution unit 4 is used to form a feeder load power supply loop to ensure the safety and stability of power supply.

[0031] The ultra-wide range power supply unit 5 provides working power for the internal circuit of the hot-swap control module, ensuring that the module can work normally under various voltage conditions.

[0032] The workflow of this embodiment is as follows:

[0033] When it is necessary to supply power to the substation equipment or to carry out technical transformation and overhaul, the intelligent management controller 2 first collects system status information and makes a judgment on whether hot plugging is allowed. If hot plugging is allowed, the staff can connect the intelligent power supply module unit to the power supply bus through the input quick interface 1. The input three-phase bus 3 distributes electrical energy to each output power distribution unit 4, and the circuit breaker and intelligent detection terminal ensure the stability and safety of the power supply circuit. The ultra-wide range power supply unit 5 ensures the power supply of the internal circuit, so that the entire module can work normally within an ultra-wide voltage range. If it is necessary to adjust the power supply configuration or move the power module, the staff can quickly unplug the module from the bus and reconfigure or move it to a new location.

[0034] The modular design of this embodiment allows the power supply system to be quickly configured and moved according to load requirements, thereby improving work efficiency. The modular design reduces the investment in manpower and financial resources. Intelligent control and management reduce operational risks and improve the safety of the technical transformation process. The units have no master-slave relationship and can be flexibly combined to meet the differentiated needs of different capacity levels and construction sites.

[0035] Furthermore, the input power and output load of the intelligent management controller 2 are collected by directly collecting the AC signal after the zero-line is raised externally, and the collection of the output distribution unit status includes the collection of the position status and load status of the output distribution unit 4.

[0036] Specifically, the intelligent management controller 2 detects the zero-crossing point of the AC signal through an external device, and directly collects the AC signal after it is raised. The zero-crossing point refers to the point where the AC voltage or current waveform passes through the zero value, which can be used to generate a synchronization signal. The intelligent management controller 2 uses a signal synchronized with the input signal to control the interval of data collection, ensuring that data is collected at a specific moment in each AC cycle, thereby ensuring the accuracy and consistency of the data.

[0037] The intelligent management controller 2 processes the collected AC signal data through a root mean square (RMS) operation program. The root mean square operation can calculate the equivalent DC value of the AC signal, that is, the effective value of the voltage or current, which is a very important parameter for the power system.

[0038] The intelligent management controller 2 adopts a binary input acquisition method, that is, the position state of the output distribution unit is determined by detecting the state of the switch (open or closed), which can be achieved by detecting the state of the relay contact or the switch.

[0039] The intelligent management controller 2 monitors the current of the feeder through the feeder current sensor, and inputs the communication data output by the current sensor into the communication port of the CPU for collection, so that the intelligent management controller 2 can obtain the actual load condition of each output distribution unit.

[0040] The intelligent management controller 2 outputs corresponding control commands according to the collected data of input power, output load and output distribution unit status, as well as the command processing results of the control interface;

[0041] Conditions for allowing incorporation: First, the controller will determine whether there is any abnormality in the input power, that is, whether the input voltage and current are within the normal operating range. Secondly, it will check whether the output load is normal, that is, whether there are abnormal conditions such as overload or short circuit. Finally, it will confirm whether the status of all output distribution units is in the disconnected state to ensure that there will be no harm to equipment and personnel during the hot plug operation.

[0042] Lock-in and merge: If any of the above conditions is not met, the controller will output a lock-in command to prevent hot plug operations, thereby ensuring the safety of the system.

[0043] In summary, the intelligent management controller 2 realizes intelligent management of the AC power supply for power system stations through precise data collection and processing, as well as real-time monitoring of system status. It ensures safety during hot-swap operations and improves the reliability and operation and maintenance efficiency of the power system.

[0044] Furthermore, the input quick interface 1 includes a socket, a plug and a lock. The socket is made of a conductive material wrapped with an insulating material, the plug adopts a multi-layer spring contact coil design, and the lock is placed on the side of the plug. The lock is used to automatically lock the plug after it is inserted into the socket. When the plug is pulled out, it needs to be manually pressed to unlock.

[0045] Specifically, the socket is made of conductive material wrapped by insulating material. This design ensures the safety of electrical contact. One side of the conductive material is designed to be a copper busbar. This is because in the power system, the copper busbar has good conductivity and mechanical strength and is suitable as a part of the internal wiring. The other side is cylindrical, which is for contact and connection with the conductive part of the plug. The socket is fixed in the power system and provides a connection point with the plug, so that three-phase electricity can be input into the module through the socket.

[0046] The plug adopts a multi-layer spring contact coil design, which can ensure more reliable contact between the plug and the socket, because the spring contact can adapt to a certain insertion force and maintain a stable contact pressure; the outer layer of the spring contact coil is wrapped with insulating material, which can ensure that there are no exposed conductive parts on the outside of the plug, thereby improving the safety of operation; the plug is connected to the power module, and when inserted into the socket, the spring contact contacts contact the cylindrical conductive part inside the socket to complete the circuit connection.

[0047] The lock is made of insulating material and is located on the side of the insulator of the plug. When the plug is fully inserted into the socket, the lock will automatically lock to ensure that the connection between the plug and the socket will not loosen due to vibration or external force. When the plug needs to be unplugged, the lock must be manually pressed to unlock. This step ensures that the operator will be aware of the need to unlock before unplugging the plug, thereby avoiding equipment damage or safety accidents caused by misoperation.

[0048] In general, the design of the input quick interface in this embodiment makes the connection and disconnection process of the power module fast and safe, which is very suitable for power system environments that require frequent replacement or maintenance. Its design takes into account the convenience of operation, connection reliability and personnel safety, and is an important technological innovation in modern power systems.

[0049] Furthermore, the input three-phase busbar 3 adopts a structure combining a copper busbar and a plastic seal, and the copper busbar is connected to the online hot-swap quick interface 2 and the output power distribution unit 4 .

[0050] Specifically, the main function of the input three-phase bus 3 is to distribute the input three-phase power supply to ensure that the power supply can be effectively transmitted to each output power distribution unit. As the bus of the input power supply inside the module, it connects the input quick interface and the output power distribution unit and is the main channel for power transmission.

[0051] The copper busbar is a material with excellent electrical conductivity and can be used as a busbar for current in the power system. In the input three-phase busbar 3, the copper busbar is used to carry and transmit the three-phase current.

[0052] The plastic shell is used to wrap the copper busbar. Except for the connection points, the rest of the copper busbar is wrapped by the plastic shell. The plastic shell provides insulation protection to prevent the copper busbar from contacting other metals or conductive materials, thereby avoiding short circuits or electric shock accidents. The plastic shell can also protect the copper busbar from external physical damage, such as impact, wear, etc. Although the main function of the plastic shell is insulation and protection, some plastic materials also have certain heat dissipation properties, which helps to dissipate the heat of the copper busbar.

[0053] Specifically, one end of the copper busbar is connected to the external power supply at the input quick interface, thereby realizing the quick connection and disconnection of the module, and the other end of the copper busbar is connected to the output power distribution unit to distribute the input power to various electrical devices.

[0054] In summary, the design of the input three-phase busbar 3 takes into account conductivity, safety and ease of maintenance, and is an important component of the power system. Through the combination of copper busbars and plastic-encapsulated shells, it provides a reliable power distribution solution for the stable operation of the power system.

[0055] Furthermore, the output power distribution unit 4 includes an air breaker and an intelligent detection terminal. The air breaker is a switch for supplying power to the feeder load, and the intelligent detection terminal completes the collection of the feeder load status and the air breaker switch status.

[0056] Specifically, the output power distribution unit 4 is a key component in the power system, which is responsible for distributing power to feeder loads and monitoring the status of the loads.

[0057] A circuit breaker is a protective device used to control the power switch of the feeder load. It plays the role of overload protection and short-circuit protection in the circuit. When the current exceeds the set value, the circuit breaker will automatically disconnect to prevent circuit damage or fire. The circuit breaker body can include an operating handle, a circuit breaker mechanism, and contacts, which work together to achieve circuit opening and closing control.

[0058] The intelligent detection terminal is used to collect the status of the feeder load and the status of the circuit breaker. It can monitor parameters such as current, voltage, power, and the opening and closing status of the circuit breaker in real time. The intelligent detection terminal sends the collected data to the intelligent management controller as the basis for the controller to make logical judgments and operational decisions.

[0059] Here’s how it works:

[0060] When power needs to be distributed to the feeder load, the miniature circuit breaker (circuit breaker) is in a closed state, allowing current to pass through. The intelligent detection terminal monitors the load of the feeder in real time, including current size, voltage stability and power consumption, and also monitors the opening and closing state of the circuit breaker; if an abnormal feeder load (such as overload, short circuit, etc.) is detected, the intelligent detection terminal will immediately send this information to the intelligent management controller; the intelligent management controller performs logical judgment based on the received information. If the judgment result shows that there is a safety hazard, the controller will issue an instruction to disconnect the circuit breaker, thereby cutting off the power supply and protecting the feeder load and the entire power system. In addition, the intelligent detection terminal can also provide remote monitoring and control functions, allowing operation and maintenance personnel to remotely obtain system status information and perform operational control.

[0061] In summary, the design of the output power distribution unit 4 improves the intelligence level of the power system and ensures the reliability and safety of power supply through real-time monitoring and rapid response.

[0062] Further, see Figure 2 The ultra-wide range power supply unit 5 includes a U front-stage rectifier filter circuit, a high-voltage and high-frequency converter power supply chip, a low-voltage DC-DC isolated power supply circuit, an output filter circuit and its auxiliary peripheral devices; the U front-stage rectifier filter circuit is used to convert the input AC power supply into DC power for input to the subsequent circuit; the high-voltage and high-frequency converter power supply chip adopts a high-voltage step-down AC-DC conversion, which is suitable for 20-385VAC ultra-wide voltage input and meets the circuit power supply continuous current of no more than 500mA. Its input AC power supply is taken from the input bus of the module unit, and outputs a 12V DC voltage to the low-voltage DC-DC isolated power supply circuit and its auxiliary peripheral devices at the subsequent stage, and finally realizes the three-power output of ±5V and 3.3V, which is processed by the output filter circuit to supply the internal circuit working power.

[0063] Specifically, the ultra-wide range power supply unit 5 is a key component in the power system, which provides a stable power supply for all chips inside the product.

[0064] The front-stage rectifier filter circuit converts the input AC power into DC power and filters it to reduce voltage fluctuations and noise, providing a stable DC power supply for the subsequent circuit.

[0065] The high-voltage and high-frequency converter power chip can adapt to an ultra-wide voltage input range (20-385VAC). Through high-voltage step-down AC-DC conversion, the input AC power is converted into DC power. It has no audio noise, low heat generation, and integrated comprehensive protection functions to ensure the stability and safety of the power supply. It provides a 12VDC output for use in the subsequent low-voltage DC-DC isolated power circuit.

[0066] The low-voltage DC-DC isolated power supply circuit further converts the 12VDC output of the high-voltage high-frequency converter into a lower voltage DC power supply, usually including ±5V and 3.3V. This circuit is designed as an isolated type to prevent electrical interference between input and output and improve the stability and safety of the power supply.

[0067] The output filter circuit filters the power output by the low-voltage DC-DC isolation power supply circuit to further reduce voltage fluctuations and noise, ensuring that the working power provided to the internal circuit is clean and stable.

[0068] Auxiliary peripheral devices include necessary capacitors, resistors, diodes, etc., which assist the operation of the power supply circuit and provide necessary support functions, such as voltage regulation, protection, filtering, etc. Those skilled in the art can easily design specific auxiliary external network devices based on the contents of this embodiment. They mainly play an auxiliary role, not the main role, and can be adjusted appropriately. Therefore, they are not specifically limited in this embodiment.

[0069] The ultra-wide range power supply unit 5 works as follows:

[0070] The input AC power is first converted into DC power through the U front-stage rectifier filter circuit and filtered; the DC power is then input into the high-voltage and high-frequency converter power chip, which can adapt to an ultra-wide input voltage range and convert the AC power into 12VDC DC power; the 12VDC DC power is then converted into ±5V and 3.3V DC power through a low-voltage DC-DC isolation power circuit, which are voltages required for the normal operation of the chip; finally, the output filter circuit filters these low-voltage DC powers to ensure the purity and stability of the power supply, and then supplies the internal circuit as a working power supply.

[0071] In summary, the design of the ultra-wide range power supply unit 5 enables the power system to adapt to various input voltage conditions, while providing a stable and reliable power supply for the internal chips, thus ensuring the normal operation of the system.

[0072] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A mobile flexible combined AC power hot-swap control module, characterized in that: include: An intelligent management controller (1) is used to obtain input power, output load, and output distribution unit status, and to perform logic judgment and hot plug permission and blocking control; The input quick interface (2) is used for fast and reliable access and self-locking of the input three-phase power input and the output of the output distribution unit; An input three-phase busbar (3) is used to distribute electricity; An output power distribution unit (4) is used to form a feeder load power supply circuit; The ultra-wide range power supply unit (5) is used to provide working power to the internal circuit of the hot-swap control module.

2. The mobile flexible combined AC power hot-swap control module according to claim 1, characterized in that: The input power and output load collection of the intelligent management controller (1) adopts external direct collection of the AC signal after the zero line is raised, and the collection of the output distribution unit status includes the collection of the position status and load status of the output distribution unit (4).

3. The mobile flexible combined AC power hot-swap control module according to claim 1, characterized in that: The input quick interface (2) comprises a socket, a plug and a lock, wherein the socket is made of a conductive material wrapped with an insulating material, the plug is designed with a multi-layer spring contact coil, and the lock is placed on the side of the plug. The lock is used to automatically lock the plug after it is inserted into the socket, and needs to be manually pressed to unlock when the plug is pulled out.

4. The mobile flexible combined AC power hot-swap control module according to claim 1, characterized in that: The input three-phase busbar (3) adopts a structure combining a copper busbar and a plastic seal, and the copper busbar is connected to the online hot-swap quick interface (2) and the output power distribution unit (4).

5. The mobile flexible combined AC power hot-swap control module according to claim 1, characterized in that: The output power distribution unit (4) comprises an air breaker and an intelligent detection terminal, the air breaker being a switch for supplying power to the feeder load, and the intelligent detection terminal completing the collection of the feeder load status and the air breaker switch status.

6. The mobile flexible combined AC power hot-swap control module according to claim 1, characterized in that: The ultra-wide range power supply unit (5) comprises a U front-stage rectifier filter circuit, a high-voltage high-frequency converter power supply chip, a low-voltage DC-DC isolation power supply circuit, an output filter circuit and its auxiliary peripheral devices; the U front-stage rectifier filter circuit is used to convert the input AC power supply into DC power for input to the rear-stage circuit; the high-voltage high-frequency converter power supply chip adopts a high-voltage step-down AC-DC conversion, which is adapted to the ultra-wide voltage input of 20-385VAC and meets the requirement that the continuous current of the circuit power supply is not greater than 500mA. The input AC power supply is taken from the input bus of the module unit, and a 12V DC voltage is output to the rear-stage low-voltage DC-DC isolation power supply circuit and its auxiliary peripheral devices, ultimately achieving a three-power output of ±5V and 3.3V, which is processed by the output filter circuit to provide working power for the internal circuit.

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