Automatic UPS (Uninterrupted Power Supply) system control method

Abstract

The invention discloses an automatic UPS system control method, which comprises the following steps of: firstly, acquiring working parameters of commercial power and a UPS in real time, then performing real-time analysis and judgment on the real-time acquired data by using an intelligent decision-making algorithm, outputting a decision, and quickly, automatically and seamlessly switching commercial power supply to UPS power supply when the commercial power is decided to be abnormal. When it is monitored that the mains supply returns to normal, the mains supply is rapidly, automatically and seamlessly switched back to supply power, and stable and reliable uninterruptible power supply is provided for the load through cooperation of the two; during the period, the output of the UPS can be dynamically adjusted according to the load change; during the period, the UPS battery can be remotely managed and maintained, and the service life of the UPS battery is prolonged; during the period, the UPS power supply can be managed and subjected to fault diagnosis remotely; the invention has the advantages of fast response speed, efficient and smooth switching, capability of dynamically adapting to different loads, and stable and reliable power supply.

Description

Technical Field

[0001] The invention belongs to the technical field of UPS power supply, and in particular relates to an automatic UPS power supply system control method. Background Art

[0002] UPS power supply, also known as uninterruptible power supply, is widely used in power systems because it provides continuous, stable and uninterrupted power supply in automation control systems. It plays an irreplaceable role in the application of power systems, ensuring the uninterrupted power supply of power systems, providing power supply guarantees for power users, and improving the reliability and safety of the entire power system.

[0003] The automatic UPS power supply system is a kind of energy storage device, with rectifier and inverter as the main components, providing constant voltage and frequency uninterruptible power supply for monitoring systems, automatic instruments, remote communication systems and other equipment in substations. Its working principle is mainly to use the digitalization and simulation of circuits to automatically control the power supply that integrates inverters and maintenance-free energy storage devices; when the mains input is normal, the UPS stabilizes the mains and supplies it to the load for use. At this time, the UPS is an AC voltage stabilizer, and it also charges its own battery; when the mains power is interrupted (power outage), the UPS immediately switches the DC power of its own battery to the load through the inverter switching conversion method to continue to supply 220V AC power to the load, so that the load maintains normal operation and protects the load software and hardware from damage; it has the advantages of stable and reliable power supply, avoiding power outages causing losses to power users, good power quality, adaptability to industrial environments, and can still provide reliable use in relatively harsh environments.

[0004] However, the existing automated UPS power supply system still has certain limitations in control, such as slow response speed, not smooth switching, and inability to adapt well to different loads and changes in mains power according to actual conditions. In order to solve the above problems, it is necessary to develop an automated UPS power supply system control method. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an automated UPS power system control method with fast response speed, efficient and smooth switching, dynamic adaptability to different loads, and stable and reliable power supply.

[0006] The object of the present invention is achieved in this way: a method for controlling an automatic UPS power supply system, comprising the following steps: S1, through sensors and data acquisition system, continuously monitors the working parameters of the mains and UPS power supply in real time, and sends the monitoring data to the remote control center in real time; S2, based on real-time monitoring data, the remote control center uses intelligent decision-making algorithms to analyze and judge the mains and UPS voltages in real time to ensure that the two work together to provide stable, reliable and uninterrupted power supply to the load; S3, when the AC power input is abnormal in real time, it will automatically and seamlessly switch to UPS power supply; when the AC power input returns to normal, it will automatically and seamlessly switch back to AC power supply; S4, when the load characteristics and demand changes are detected in real time, the UPS power output parameters are dynamically adjusted to adapt to the load changes; S5, during the mains supply period, the remote control center automatically starts the charging process for the UPS power supply based on the real-time monitoring data of the UPS battery power to ensure that it is fully charged; S6, during the period when the mains and UPS work together, the remote control center performs real-time fault diagnosis on the UPS based on real-time monitoring data. When a fault is detected, the fault type and location are quickly determined, and an alarm signal is issued to notify the center staff to handle it in a timely manner; S7, during the coordinated operation of the AC power and the UPS power supply, the remote control center and the site complete data transmission and command issuance through wireless communication technology.

[0007] Preferably, in step S1, the operating parameters of the AC power supply include input voltage, input current, frequency and phase, and the operating parameters of the UPS power supply include output voltage, output current, load, power factor, temperature and battery power.

[0008] Preferably, in step S2, the intelligent decision-making algorithm is one or more of a machine learning algorithm, a neural network algorithm, and a genetic algorithm.

[0009] Preferably, in step S3, the seamless switching between the mains power and the UPS power supply adopts solid-state conversion switch technology.

[0010] Preferably, in step S4, the remote control center automatically adjusts the working mode of the UPS power supply according to the load condition and the quality of the mains power.

[0011] Preferably, when light load or good mains quality is detected in real time, the UPS power supply adopts energy-saving working mode; when heavy load or poor mains quality is detected in real time, the UPS power supply adopts high-performance working mode.

[0012] Due to the adoption of the above technical scheme, the beneficial effects of the present invention are as follows: the present invention adopts a control method for real-time monitoring of the working parameters of the mains power and UPS power supply, real-time analysis and judgment of the working status of the mains power and UPS power supply, and real-time taking countermeasures, which can effectively improve the response speed of the automatic UPS power supply system when it is working; the present invention adopts a control method for automatic seamless disconnection between the mains power and the UPS power supply, and the switching between them is efficient and smooth when they work alternately, and the two together provide a stable and reliable power supply for the load; the present invention adopts an intelligent decision-making algorithm to further improve the comprehensive analysis and judgment capabilities of the system, and further improve the response speed of the system; the present invention adopts a control method for dynamically adjusting the output parameters of the UPS power supply according to load changes, so that the system can better adapt to the use of different loads; the present invention adopts a control method for automatic charging and real-time fault diagnosis of the UPS power supply to ensure the normal operation of the UPS power supply, thereby further improving the stability and reliability of the system power supply; in general, the present invention has the advantages of fast response speed, efficient and smooth switching, dynamic adaptation to the use of different loads, and stable and reliable power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a flow chart of the control method of the present invention. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0015] like Figure 1 As shown, the present invention provides an automatic UPS power system control method, comprising the following steps: S1, through sensors and data acquisition system, continuously monitors the working parameters of the mains and UPS power supply in real time, and sends the monitoring data to the remote control center in real time.

[0016] Among them, the sensor adopts high-precision sensor. In the prior art, the sensors commonly used for real-time monitoring of the working parameters of the mains and UPS power supply include voltage sensor (such as voltage transformer), current sensor (such as Hall current sensor), power failure alarm sensor, power sensor, frequency sensor, comprehensive parameter acquisition module (such as EDA9033A module), temperature and humidity sensor, etc. You can choose to use it according to the actual situation.

[0017] Among them, the data acquisition systems commonly used in the prior art for real-time monitoring of AC power and UPS power supply working parameters include data acquisition cards, PXI, etc. The former is connected to the computer platform through PCI, USB and other buses to realize the data acquisition function, and the latter is a modular instrument platform based on PCI bus, which is suitable for use in automated testing, data acquisition and other occasions.

[0018] Among them, the working parameters of the AC power supply include input voltage, input current, frequency and phase, etc. The working parameters of the UPS power supply include output voltage, output current, load, power factor, temperature and battery power, etc. By judging its working status through its working parameters, the control and adjustment methods and measures can be obtained.

[0019] S2, based on real-time monitoring data, the remote control center uses intelligent decision-making algorithms to analyze and judge the AC power and UPS voltages in real time to ensure that the two work together to provide stable, reliable and uninterrupted power supply to the load.

[0020] Among them, the intelligent decision-making algorithm is one or more of the machine learning algorithms, neural network algorithms, and genetic algorithms in the existing technology. The intelligent decision-making algorithm can build a model based on historical data and experience, and then use the model to predict future states or make decisions, which is suitable for analysis and judgment.

[0021] S3, when real-time monitoring detects abnormal AC input, such as voltage fluctuation beyond the set range, unstable frequency or power outage, it automatically and seamlessly switches to UPS power supply; when monitoring detects that the AC input returns to normal, and after a certain delay and stability judgment, it automatically and seamlessly switches back to AC power supply.

[0022] Among them, the seamless switching between AC power and UPS power adopts solid-state transfer switch technology to reduce switching time and potential power shocks, maintain the stability of output voltage and frequency, ensure the normal operation of key equipment, and avoid losses.

[0023] The solid-state transfer switch SSTS utilizes high-power electric motor technology and measurement and control technology based on microprocessors, optical fiber communications, and digital signal processing. The conduction time of semiconductor devices represented by thyristors can reach microseconds, and no arc is generated during the switching process. Therefore, the solid-state transfer switch SSTS based on semiconductor devices can greatly improve the switching speed and switch life, achieve high-speed switching while hardly affecting the load operation, and the recovery time is close to 0. In the event of a fault, the load can be quickly switched to normal power supply to ensure that sensitive loads are not affected by voltage sags or interruptions.

[0024] S4, when the load characteristics and demand changes are monitored in real time, the UPS power output parameters are dynamically adjusted to adapt to the load changes; for example, when the load increases or decreases, the UPS voltage output power is automatically adjusted.

[0025] The remote control center automatically adjusts the working mode of the UPS power supply according to the load conditions and the quality of the mains power. Specifically, when the real-time monitoring detects a light load or the mains power quality is good, the UPS power supply adopts the energy-saving working mode to reduce the energy consumption of the UPS power supply; when the real-time monitoring detects a heavy load or the mains power quality is poor, the UPS power supply adopts the high-performance working mode to ensure the stability and reliability of the output power supply.

[0026] S5, during the mains power supply period, the remote control center automatically starts the charging procedure for the UPS power supply based on the real-time monitoring data of the UPS battery power to ensure that it is fully charged, so that it is always ready to take over the mains power supply. During this period, the UPS battery power, voltage, temperature and other parameters are detected in real time to ensure that the UPS battery is in good working condition, extend the battery life and reduce the battery maintenance cost.

[0027] S6, during the period when the mains and UPS power supply work together, the remote control center performs real-time fault diagnosis on the UPS power supply based on real-time monitoring data. When a fault is detected, the fault type and location are quickly determined, and an alarm signal is issued to notify the center staff to handle it in time.

[0028] During specific implementation, for some common faults, an automatic repair function can be set to enable the system to maintain continuous operation better.

[0029] S7, during the coordinated operation of the AC power and the UPS power supply, the remote control center and the site complete data transmission and command issuance through wireless communication technology, complete the remote coordinated control of the AC power and UPS power supply on site by the remote control center, and realize remote monitoring and control of the UPS power supply system.

[0030] During the specific implementation, the center staff can view the operating status, parameter settings and fault information of the UPS power supply in real time through mobile phones, computers and other terminal devices, which is convenient for timely control, management, maintenance and processing during non-working hours, providing better service quality for power users.

[0031] In summary, the present invention provides a fast, efficient and accurate control method for a UPS power supply system. Under the control of this control method, the AC power and the UPS power supply work together to provide a stable, reliable and adaptable working power supply for the load.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific implementation modes of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for controlling an automated UPS power supply system, characterized in that: The steps include: S1, through sensors and data acquisition system, continuously monitors the working parameters of the mains and UPS power supply in real time, and sends the monitoring data to the remote control center in real time; S2, based on real-time monitoring data, the remote control center uses intelligent decision-making algorithms to analyze and judge the mains and UPS voltages in real time to ensure that the two work together to provide stable, reliable and uninterrupted power supply to the load; S3, when the AC power input is abnormal in real time, it will automatically and seamlessly switch to UPS power supply; when the AC power input returns to normal, it will automatically and seamlessly switch back to AC power supply; S4, when the load characteristics and demand changes are detected in real time, the UPS power output parameters are dynamically adjusted to adapt to the load changes; S5, during the mains supply period, the remote control center automatically starts the charging process for the UPS power supply based on the real-time monitoring data of the UPS battery power to ensure that it is fully charged; S6, during the period when the mains and UPS work together, the remote control center performs real-time fault diagnosis on the UPS based on real-time monitoring data. When a fault is detected, the fault type and location are quickly determined, and an alarm signal is issued to notify the center staff to handle it in a timely manner; S7, during the coordinated operation of the AC power supply and the UPS power supply, the remote control center and the site complete data transmission and command issuance through wireless communication technology.

2. The automatic UPS power system control method according to claim 1, characterized in that: In step S1, the working parameters of the AC power supply include input voltage, input current, frequency and phase, and the working parameters of the UPS power supply include output voltage, output current, load, power factor, temperature and battery power.

3. The automatic UPS power system control method according to claim 1, characterized in that: In step S2, the intelligent decision-making algorithm is one or more of a machine learning algorithm, a neural network algorithm, and a genetic algorithm.

4. The automatic UPS power system control method according to claim 1, characterized in that: In step S3, the seamless switching between the mains power and the UPS power supply adopts solid-state conversion switch technology.

5. The automatic UPS power system control method according to claim 1, characterized in that: In step S4, the remote control center automatically adjusts the working mode of the UPS power supply according to the load condition and the quality of the mains power.

6. The automatic UPS power system control method according to claim 5, characterized in that: When real-time monitoring detects a light load or good mains power quality, the UPS power supply adopts an energy-saving working mode; when real-time monitoring detects a heavy load or poor mains power quality, the UPS power supply adopts a high-performance working mode.

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