Dual-power-supply high-voltage rapid switching device

Abstract

The utility model discloses a dual-power-supply high-voltage rapid switching device, and belongs to the technical field of electric power safety. The dual-power-supply high-voltage rapid switching device is composed of a first bus, a second bus, a change-over switch, a main control module, a standby control module, a power supply detection module, an output line detection module, a communication module, an output sub-line, a storage module and the like. The system adopts two independent power supplies, namely the first bus and the second bus, and when one power supply breaks down, the two buses can be rapidly switched to the other power supply through the change-over switch. By using the technical scheme, the purposes of rapidly cutting off a fault power supply and switching in a normal power supply can be achieved, and continuous power supply of the system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power safety, and more specifically to a dual-power supply high-voltage fast switching device. Background Art

[0002] Ensuring that the power supply system of pharmaceutical and chemical enterprises is stable and reliable is crucial to ensuring the normal operation of chemical production equipment and facilities. Using multiple power supply lines and configuring power switching devices is one of the important measures to improve power supply reliability. This ensures that when a problem occurs in a certain line, it can quickly switch to the backup line to ensure the continuous and safe power supply of key chemical production equipment and dangerous processes, thereby reducing economic losses and potential major safety risks caused by power outages.

[0003] After searching the patent document with the existing publication number CN209516732U, a factory power fast switching device with a two-way automatic switching function is provided. The device can realize that the power supply is automatically switched to the backup power supply when the original working power supply is abnormal. It can also switch from the backup power supply to the original power supply by automatically storing the circuit breaker operation status results, thereby realizing the power switching function with a two-way switching function.

[0004] The above-mentioned power switching device can only adopt a passive switching strategy. When there is a load in the power supply line, the passive switching strategy easily causes a drastic fluctuation in the voltage of the power supply line, affecting the normal operation of the load in the access circuit.

[0005] In view of this, we propose a dual-power high-voltage fast switching device. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the utility model is to provide a dual power supply high voltage fast switching device to solve the problems raised in the above background technology.

[0008] 2. Technical solution

[0009] The utility model is realized through the following technical solutions:

[0010] A dual-power high-voltage fast switching device, comprising a switching switch, a main control module, a backup control module, a power detection module, and a communication module;

[0011] The switching switch is electrically connected to the first bus, the second bus, and the output sub-line. Two power detection modules are provided, which are respectively connected to the first bus and the second bus. The main control module is electrically connected to the switching switch, and the backup control module is electrically connected to the switching switch. The main control module and the backup control module are both electrically connected to the communication module.

[0012] As an optional solution of the technical solution of the present application document, an output line detection module is electrically connected to the output sub-line, and the output line detection module is electrically connected to the backup control module.

[0013] As an optional solution of the technical solution of the present application document, the power supply detection module and the output line detection module both include a voltage detection circuit and a harmonic detection circuit.

[0014] As an optional solution of the technical solution of this application document, the power supply detection module and the output line detection module both include a digital interface circuit and a calibration circuit.

[0015] As an optional solution of the technical solution of this application document, the switching switch adopts a MOS switch.

[0016] As an optional solution to the technical solution of this application document, the main control module and the backup control module are both powered by independent power supplies.

[0017] As an optional solution of the technical solution of this application document, it also includes a storage module, which is used to record the state of the switching switch.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. This application sets up a backup control module and a communication module so that the backup control module can receive the control plan sent by the server through the communication module and control the switching switch to switch the power supply. It can actively avoid the peak power consumption on the first bus or the second bus, and switch the power supply of the output sub-line in advance to avoid large fluctuations in the voltage of the first bus, the second bus and the output sub-line, which will affect the stable operation of the load in the connected circuit.

[0021] 2. This application sets up a main control module and uses a power detection module to detect the first bus and the second bus. When the control scheme received by the backup control module cannot meet the stable power supply of the output sub-line, the switching switch can be controlled to switch the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a dual-power high-voltage fast switching device;

[0023] In the figure: 1. first bus; 2. second bus; 3. switching switch; 4. main control module; 5. backup control module; 6. power supply detection module; 7. output line detection module; 8. communication module; 9. output sub-line; 10. storage module. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0025] See also Figure 1 The utility model provides a dual-power high-voltage fast switching device, including a first busbar 1, a second busbar 2, a switching switch 3, a main control module 4, a backup control module 5, a power detection module 6, an output line detection module 7, a communication module 8, an output sub-line 9 and a storage module 10.

[0026] This system uses two independent power supplies: the first bus 1 and the second bus 2. When one of the two busbars fails, it can be quickly switched to the other through the switch 3, ensuring the uninterrupted and continuous power supply safety of our company's primary power loads such as hydrogenation, nitrosation reduction and aminopyrine methylation, which has significant economic and social benefits.

[0027] A power supply detection module 6 is installed on the first bus 1 and the second bus 2. The power supply detection module 6 and the output line detection module 7 both include a voltage detection circuit and a harmonic detection circuit. These circuits are responsible for real-time monitoring of bus voltage fluctuations, harmonics and other parameters to ensure that the power supply quality meets the specified standards; these data are sent to the main control module 4 through wires, and the main control module 4 communicates with the server through the communication module and uploads these data to the server, so that the staff can understand the operating status of the bus and formulate a power supply plan based on the historical operating status of the bus.

[0028] The power supply plan is formulated based on the fluctuation of the first bus 1 and the second bus 2, and is used to actively control the state of the first bus 1 and the second bus 2 connected to the output sub-line 9, reduce the voltage fluctuation of the first bus 1 and the second bus 2, and ensure the normal operation of the loads on the first bus 1 and the second bus 2.

[0029] The switch 3 adopts a MOSFET switch, and the main control module 4 and the backup control module 5 provide control signals.

[0030] The standby control module 5 establishes a connection with the server through the communication module 8 to receive the power supply plan sent by the server, and controls the switching switch 3 according to the control plan to switch the power supply bus of the output sub-line 9.

[0031] The main control module 4 obtains the voltage fluctuation on the first bus 1 and the second bus 2 through the power supply detection module 6, makes a judgment according to the voltage fluctuation, and controls the state of the switching switch 3.

[0032] The output line detection module 7 is connected to the output sub-line 9, and is used to collect voltage fluctuation data in the output sub-line 9. The standby control module 5 is electrically connected to the output line detection module 7, and is used to transmit the acquired voltage fluctuation data in the output sub-line 9 to the server through the communication module, and when the voltage fluctuation in the output sub-line 9 is abnormal, an alarm message is sent to the server through the communication module.

[0033] The power supply detection module 6 and the output line detection module 7 also include a digital interface circuit and a calibration circuit; the server establishes a connection with the main control module 4 and the backup control module 5 through the communication module 8, and sends calibration and adjustment commands. The main control module 4 and the backup control module 5 can communicate with the power supply detection module 6 and the output line detection module 7 through the digital interface circuit, and start the calibration circuit to realize remote calibration and parameter adjustment of the power supply detection module 6 and the output line detection module 7.

[0034] In this solution, the backup control module 5 switches the switch 3 based on the received power supply scheme, and actively selects the bus connected to the power supply line; the main control module 4 can control the switch 3 according to the actual situation of the bus. The backup control module 5 and the main control module 4 independently control the switch 3 based on different logics. When the main control module 4 and the power supply detection module 6 are abnormal, resulting in the switch 3 not working properly, the backup control module 5 timely discovers the abnormal situation based on the output line detection module 7, and can remedy it based on the power supply scheme sent by the service end. In addition, the backup control module 5 is also used to detect the state of the switch 3, and write the state of the switch 3 into the storage module 10 to record the abnormal state.

[0035] The main control module 4 and the backup control module 5 both use STM32 series microcontrollers and are powered by independent power supplies to ensure the normal operation of the main control module 4 and the backup control module 5. The STM32 microcontroller uses the ARM Cortex-M series processor core, which has the characteristics of high performance and low power consumption. The STM32 microcontroller supports multiple low-power modes, which can effectively extend the battery life and is suitable for application scenarios that require long-term operation.

[0036] Communication module 8 adopts the LoRa module. The LoRa technology adopts spread spectrum modulation technology, which can realize communication over a long distance, covering the communication needs of a city or a larger range. In addition, the power consumption of the LoRa module when transmitting data is very low, and it can continue to operate for several years when powered by a battery. It is suitable for application scenarios that require long-term operation and low power consumption requirements.

[0037] The power supply detection module 6 and the output line detection module 7 can adopt the Fluke 437I I series power quality analyzer. This device has a voltage detection circuit, a harmonic detection circuit and a digital interface circuit, which can be used to monitor the power quality of the power system in real time and provide various calibration options.

[0038] The use of this technical solution can achieve the purpose of quickly cutting off the faulty power supply and switching on the normal power supply, thus ensuring the continuous power supply of the system. After using this dual-power high-voltage fast switching device, it can ensure the uninterrupted and continuous power supply safety of the primary power loads such as hydrogenation, nitrosation reduction and aminopyrine methylation in our company, thereby meeting the requirements of the "Technical Specifications for Power Design of Production Equipment in Petrochemical Enterprises". The device can also be widely used in the continuous operation of key equipment and facilities such as important medical equipment in hospitals or other industries that must ensure continuous and uninterrupted power supply.

Claims

1. A dual power supply high voltage fast switching device, characterized in that: It comprises a switch (3), a main control module (4), a standby control module (5), a power supply detection module (6), and a communication module (8); The switching switch (3) is electrically connected to the first bus (1), the second bus (2), and the output sub-line (9); two power detection modules (6) are provided, which are respectively connected to the first bus (1) and the second bus (2); the main control module (4) is electrically connected to the switching switch (3); the backup control module (5) is electrically connected to the switching switch (3); and the main control module (4) and the backup control module (5) are both electrically connected to the communication module (8).

2. The dual power supply high voltage fast switching device according to claim 1, characterized in that: The output sub-line (9) is electrically connected to an output line detection module (7), and the output line detection module (7) is electrically connected to a backup control module (5).

3. The dual power supply high voltage fast switching device according to claim 2, characterized in that: The power supply detection module (6) and the output line detection module (7) both include a voltage detection circuit and a harmonic detection circuit.

4. The dual power supply high voltage fast switching device according to claim 2, characterized in that: The power supply detection module (6) and the output line detection module (7) both include a digital interface circuit and a calibration circuit.

5. The dual power supply high voltage fast switching device according to claim 1, characterized in that: The switching switch (3) is a MOS switch.

6. The dual power supply high voltage fast switching device according to claim 1, characterized in that: The main control module (4) and the standby control module (5) are both powered by independent power supplies.

7. The dual power supply high voltage fast switching device according to claim 1, characterized in that: It also comprises a storage module (10), wherein the storage module (10) is used to record the state of the switching switch (3).

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