CN117833444B - Power supply switching control method and system for high-compatibility power supply - Google Patents
Power supply switching control method and system for high-compatibility power supply Download PDFInfo
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- CN117833444B CN117833444B CN202410238932.3A CN202410238932A CN117833444B CN 117833444 B CN117833444 B CN 117833444B CN 202410238932 A CN202410238932 A CN 202410238932A CN 117833444 B CN117833444 B CN 117833444B
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- 239000002243 precursor Substances 0.000 claims abstract description 15
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- 230000000630 rising effect Effects 0.000 claims description 5
- 238000013500 data storage Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses a power supply switching control method and a system of a high-compatibility power supply, which relate to the field of power supply control and comprise the following steps: analyzing fault precursors of the main control high-compatibility power supply, if the fault hidden danger exists in the main control high-compatibility power supply, starting the standby high-compatibility power supply to enter a power supply state, and if the fault hidden danger exists in the main control high-compatibility power supply, not performing any operation; if the main control high-compatibility power supply fails, disconnecting the main control high-compatibility power supply from the power supply system, and switching the standby high-compatibility power supply to the power supply system; after the power supply is switched, the main control high-compatibility power supply is overhauled, and when the main control high-compatibility power supply is overhauled, the main control high-compatibility power supply is switched to the power supply system. By arranging the power supply preparation module, the power supply switching module, the model building module and the power supply compensation module, seamless connection can be formed, the influence of power fluctuation on a power supply system when parameters are input is avoided, and further, the generation of serious loss is avoided.
Description
Technical Field
The invention relates to the field of power supply control, in particular to a power supply switching control method and system of a high-compatibility power supply.
Background
In modern power systems, a large number of important loads are involved, which often have a relatively high demand for the quality of the electrical energy. In order to meet the requirements of loads on power supplies, uninterrupted power supplies and other modes can be adopted for supplying power, but the construction cost is greatly increased, multiple power supply modes can also be adopted, a common mode is a double-power supply structure, but because the power supply switching system needs longer time when switching between main and standby power supplies, the power supplies can be switched to the standby high-compatibility power supplies only after a certain time delay is passed after the power supplies lose power, in addition, the two paths of independent power supplies often have differences in phase, and larger impact current can be caused if the switching time is selected inappropriately.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provides a power supply switching control method and a power supply switching control system for a high-compatibility power supply, which solve the problems that the power supply switching system needs longer time when switching between a main power supply and a standby power supply, the standby high-compatibility power supply can be switched to after a certain delay after the power supply is powered off, and in addition, the two independent power supplies often have differences in phase, and larger impact current can be caused if the switching time is not properly selected.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a power supply switching control method of a high-compatibility power supply comprises the following steps:
The main control high-compatibility power supply and the standby high-compatibility power supply are arranged in parallel, and the main control high-compatibility power supply provides power for the power supply system, and the standby high-compatibility power supply does not provide power for the power supply system;
Analyzing fault precursors of the main control high-compatibility power supply, if the fault hidden danger exists in the main control high-compatibility power supply, starting the standby high-compatibility power supply to enter a power supply state, and if the fault hidden danger exists in the main control high-compatibility power supply, not performing any operation;
If the main control high-compatibility power supply fails within the preset time, the standby high-compatibility power supply is turned off;
If the main control high-compatibility power supply fails, the connection between the main control high-compatibility power supply and the power supply system is disconnected, the standby high-compatibility power supply is switched to the power supply system, the standby high-compatibility power supply is used for independently supplying power to the power supply system, and main parameter compensation is carried out on the standby high-compatibility power supply and the main control high-compatibility power supply in the switching process;
the switching process for performing main parameter compensation on the standby high-compatibility power supply and the main control high-compatibility power supply comprises the following steps:
establishing a loop change model of power-off and power-on of a power supply system;
the establishment of the loop change model for power-off and power-on of the power supply system comprises the following steps:
At least one input voltage value of a power supply system is obtained, the input voltage values are uniformly distributed in a voltage range used by the power supply system, and the distance between adjacent input voltage values is smaller than a preset value;
When the power supply voltage of the power supply system is an input voltage value, obtaining the voltage change condition in a loop of the power supply system after the input voltage is disconnected;
Drawing a voltage change curve corresponding to the input voltage value, fitting the curve to obtain a main fitting function, and enabling the input voltage value to correspond to the main fitting function one by one;
When the power supply voltage of the power supply system is 0, obtaining the voltage change condition in a loop of the power supply system after the access power supply voltage is an input voltage value;
drawing a voltage change curve corresponding to the input voltage value, fitting the curve to obtain a subordinate fitting function, and corresponding the input voltage value to the subordinate fitting function one by one;
calculating by using a loop change model of power-off and power-on of a power supply system, and at the time t in the switching process, controlling the descending speed of the voltage of the high-compatibility power supply in the power supply system;
Calculating by using a loop change model of power-off and power-on of a power supply system, and at the moment t in the switching process, increasing the voltage of a standby high-compatibility power supply in the power supply system;
Calculating a first electric energy value which is required to be compensated by the power supply system at a moment t in the switching process, compensating positive current if the first electric energy value is positive, and compensating negative current if the first electric energy value is negative;
Summarizing first electric energy values which correspond to each moment in the whole switching process and are to be compensated by the power supply system to obtain main parameter compensation;
after the power supply is switched, overhauling the main control high-compatibility power supply, when the main control high-compatibility power supply is overhauled, starting the main control high-compatibility power supply to enter a power supply state, switching the main control high-compatibility power supply to a power supply system, closing the standby high-compatibility power supply, and performing auxiliary parameter compensation on the main control high-compatibility power supply and the standby high-compatibility power supply in the switching process;
The switching process for carrying out auxiliary parameter compensation on the main control high-compatibility power supply and the standby high-compatibility power supply comprises the following steps:
calculating by using a loop change model of power-off and power-on of the power supply system, and at the time t in the switching process, reducing the voltage of the standby high-compatibility power supply in the power supply system;
calculating by using a loop change model of power-off and power-on of a power supply system, and at the moment t in the switching process, controlling the rising speed of the voltage of a high-compatibility power supply in the power supply system;
Calculating a second electric energy value which is required to be compensated by the power supply system at the time t in the switching process, if the second electric energy value is positive, compensating positive current, and if the second electric energy value is negative, compensating negative current;
summarizing second electric energy values which correspond to each moment in the whole switching process and are to be compensated by the power supply system, and obtaining auxiliary parameter compensation;
in the power supply switching process, the data of the main control high-compatibility power supply and the standby high-compatibility power supply in each operation are recorded as operation history information.
Preferably, the fault precursor analysis for the master control high-compatibility power supply comprises the following steps:
Acquiring the normal operation temperature of a power adapter of a main control high-compatibility power supply, and analyzing to obtain the upper temperature threshold value of the power adapter according to the normal operation temperature;
Acquiring the real-time temperature of the power adapter, judging whether the real-time temperature is greater than a threshold value above the temperature, if so, enabling the main control high-compatibility power supply to have fault risk, and if not, enabling the main control high-compatibility power supply to have no fault risk;
acquiring power frequency historical data of a power adapter of a main control high-compatibility power supply, and analyzing to obtain a power frequency threshold value of the power adapter according to the power frequency historical data;
acquiring the real-time power supply frequency of the power supply adapter, judging whether the real-time power supply frequency is larger than a power supply frequency threshold value, if so, enabling the main control high-compatibility power supply to have fault risk, and if not, enabling the main control high-compatibility power supply to have no fault risk;
Acquiring historical data of the output power of the main control high-compatibility power supply, and analyzing to obtain the working range of the output power according to the historical data of the output power;
and monitoring the real-time output power of the main control high-compatibility power supply, judging whether the real-time output power is in the working range of the output power, if so, judging that the main control high-compatibility power supply has no fault risk, and if not, judging that the main control high-compatibility power supply has the fault risk.
Preferably, the step of starting the standby high-compatibility power supply to enter the power supply state includes the following steps:
Acquiring a first power state of a main control high-compatibility power supply when the main control high-compatibility power supply normally operates, wherein the first power state comprises a first power supply voltage, a first power supply frequency and a first power supply phase sequence;
Starting a standby high-compatibility power supply to a second power supply state, wherein the second power supply state comprises a second power supply voltage, a second power supply frequency and a second power supply phase sequence;
the second power supply voltage is equal to the first power supply voltage, the second power supply frequency is equal to the first power supply frequency, and the second power supply phase sequence is consistent with the first power supply phase sequence.
Preferably, the switching the standby high-compatibility power supply to the power supply system includes the following steps:
the first contactor of the main control high-compatibility power supply and the first contactor of the power supply system are powered off simultaneously, coils of the two first contactors are powered off and cannot be attracted, and the main control high-compatibility power supply is disconnected with the power supply system;
the second contactor of the standby high-compatibility power supply and the second contactor of the power supply system are electrified at the same time, coils of the two second contactors are electrified and mutually attracted, and the standby high-compatibility power supply and the power supply system are connected with each other.
Preferably, the step of starting the master control high-compatibility power supply to enter the power supply state includes the following steps:
Acquiring a third power state of the standby high-compatibility power supply when the standby high-compatibility power supply normally operates, wherein the third power state comprises a third power supply voltage, a third power supply frequency and a third power supply phase sequence;
Starting a main control high-compatibility power supply to a fourth power supply state, wherein the fourth power supply state comprises a fourth power supply voltage, a fourth power supply frequency and a fourth power supply phase sequence;
the fourth power supply voltage is equal to the third power supply voltage, the fourth power supply frequency is equal to the third power supply frequency, and the fourth power supply phase sequence is consistent with the third power supply phase sequence.
Preferably, the switching of the master control high-compatibility power supply to the power supply system comprises the following steps:
The second contactor of the standby high-compatibility power supply and the second contactor of the power supply system are powered off simultaneously, coils of the two second contactors are powered on and cannot be attracted, and the standby high-compatibility power supply is disconnected with the power supply system;
the first contactor of the main control high-compatibility power supply and the first contactor of the power supply system are electrified at the same time, coils of the two first contactors are powered off and mutually attracted, and the main control high-compatibility power supply and the power supply system are connected with each other.
A power supply switching control system of a high-compatibility power supply is used for realizing the power supply switching control method of the high-compatibility power supply, and comprises the following steps:
The fault prediction module is used for carrying out fault precursor analysis on the main control high-compatibility power supply;
the power supply preparation module starts the standby high-compatibility power supply to enter a power supply state when the power supply preparation module analyzes and obtains that the main control high-compatibility power supply has fault hidden trouble;
The power supply switching module is used for disconnecting the main control high-compatibility power supply from the power supply system when the main control high-compatibility power supply fails and switching the standby high-compatibility power supply to the power supply system, and when the main control high-compatibility power supply is overhauled, the power supply switching module starts the main control high-compatibility power supply to enter a power supply state, switches the main control high-compatibility power supply to the power supply system and closes the standby high-compatibility power supply;
The model building module is used for building a loop change model of power failure and power on of the power supply system;
The power supply compensation module is used for carrying out main parameter compensation or auxiliary parameter compensation on the standby high-compatibility power supply and the main control high-compatibility power supply in the power supply switching process;
And the data storage module records and stores the data of the main control high-compatibility power supply and the standby high-compatibility power supply in each operation.
Compared with the prior art, the invention has the beneficial effects that:
Through setting up power preparation module, power switching module, model establishment module and power compensation module, when probably breaking down, start reserve high compatible power in advance, when breaking down, then switch with the electric system to reserve high compatible power on to in the switching process, compensate the circuit, guarantee that the voltage in the whole circuit keeps constant value, can form seamless butt joint, avoid power supply system when the input parameter, by the influence of electric power fluctuation, and then avoid producing great loss, and after the restoration of the high compatible power of master control, switch back the high compatible power of master control again, guarantee the stability of system, and carry out compensation control, avoid causing great impulse current.
Drawings
FIG. 1 is a schematic flow chart of a power supply switching control method of a high-compatibility power supply of the invention;
FIG. 2 is a schematic diagram of a flow chart of fault precursor analysis for a master high-compatibility power supply according to the present invention;
FIG. 3 is a schematic diagram of a process for starting a standby high-compatibility power supply to enter a power supply state according to the present invention;
FIG. 4 is a schematic flow chart of a system for switching a standby high-compatibility power supply to a power supply according to the present invention;
FIG. 5 is a schematic diagram of a switching process of the present invention, which is a main parameter compensation process for a standby high-compatibility power supply and a main high-compatibility power supply;
FIG. 6 is a schematic diagram of a process for starting a master control high-compatibility power supply to enter a power supply state according to the present invention;
FIG. 7 is a schematic flow chart of a system for switching a master control high-compatibility power supply to a power supply according to the present invention;
FIG. 8 is a schematic diagram of a process of performing secondary parameter compensation for a primary high-compatibility power supply and a backup high-compatibility power supply in the switching process of the present invention;
FIG. 9 is a schematic flow chart of a loop change model for establishing power-off and power-on of a power supply system according to the present invention.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
Referring to fig. 1, a power supply switching control method of a high-compatibility power supply includes:
The main control high-compatibility power supply and the standby high-compatibility power supply are arranged in parallel, and the main control high-compatibility power supply provides power for the power supply system, and the standby high-compatibility power supply does not provide power for the power supply system;
Analyzing fault precursors of the main control high-compatibility power supply, if the fault hidden danger exists in the main control high-compatibility power supply, starting the standby high-compatibility power supply to enter a power supply state, and if the fault hidden danger exists in the main control high-compatibility power supply, not performing any operation;
If the main control high-compatibility power supply fails within the preset time, the standby high-compatibility power supply is turned off;
If the main control high-compatibility power supply fails, the connection between the main control high-compatibility power supply and the power supply system is disconnected, the standby high-compatibility power supply is switched to the power supply system, the standby high-compatibility power supply is used for independently supplying power to the power supply system, and main parameter compensation is carried out on the standby high-compatibility power supply and the main control high-compatibility power supply in the switching process;
after the power supply is switched, overhauling the main control high-compatibility power supply, when the main control high-compatibility power supply is overhauled, starting the main control high-compatibility power supply to enter a power supply state, switching the main control high-compatibility power supply to a power supply system, closing the standby high-compatibility power supply, and performing auxiliary parameter compensation on the main control high-compatibility power supply and the standby high-compatibility power supply in the switching process;
in the power supply switching process, the data of the main control high-compatibility power supply and the standby high-compatibility power supply in each operation are recorded as operation history information.
Referring to fig. 2, the fault precursor analysis for the master high-compatibility power supply includes the following steps:
Acquiring the normal operation temperature of a power adapter of a main control high-compatibility power supply, and analyzing to obtain the upper temperature threshold value of the power adapter according to the normal operation temperature;
Acquiring the real-time temperature of the power adapter, judging whether the real-time temperature is greater than a threshold value above the temperature, if so, enabling the main control high-compatibility power supply to have fault risk, and if not, enabling the main control high-compatibility power supply to have no fault risk;
acquiring power frequency historical data of a power adapter of a main control high-compatibility power supply, and analyzing to obtain a power frequency threshold value of the power adapter according to the power frequency historical data;
acquiring the real-time power supply frequency of the power supply adapter, judging whether the real-time power supply frequency is larger than a power supply frequency threshold value, if so, enabling the main control high-compatibility power supply to have fault risk, and if not, enabling the main control high-compatibility power supply to have no fault risk;
Acquiring historical data of the output power of the main control high-compatibility power supply, and analyzing to obtain the working range of the output power according to the historical data of the output power;
monitoring the real-time output power of the main control high-compatibility power supply, judging whether the real-time output power is in the working range of the output power, if so, the main control high-compatibility power supply has no fault risk, and if not, the main control high-compatibility power supply has the fault risk;
The fault precursor analysis is performed on the main control high-compatibility power supply, all precursor conditions of the main control high-compatibility power supply in fault are synthesized, the real-time temperature, the real-time power supply frequency and the real-time output power are monitored, if one of the conditions is abnormal, the main control high-compatibility power supply is judged to have abnormal conditions, and then the standby high-compatibility power supply is started, so that when the main control high-compatibility power supply has problems, the standby high-compatibility power supply can be directly connected into a power supply system, delay does not occur, and data loss caused to computer equipment is avoided.
Referring to fig. 3, the step of starting the standby high-compatibility power supply into the power supply state includes the steps of:
Acquiring a first power state of a main control high-compatibility power supply when the main control high-compatibility power supply normally operates, wherein the first power state comprises a first power supply voltage, a first power supply frequency and a first power supply phase sequence;
Starting a standby high-compatibility power supply to a second power supply state, wherein the second power supply state comprises a second power supply voltage, a second power supply frequency and a second power supply phase sequence;
The second power supply voltage is equal to the first power supply voltage, the second power supply frequency is equal to the first power supply frequency, and the second power supply phase sequence is consistent with the first power supply phase sequence;
Various parameter settings of the standby high-compatibility power supply need to refer to the state of the main control high-compatibility power supply when the main control high-compatibility power supply normally operates, otherwise, direct access can cause fluctuation of the whole power supply system and influence the power supply system.
Referring to fig. 4, switching the standby high-compatibility power to the power supply system includes the steps of:
the first contactor of the main control high-compatibility power supply and the first contactor of the power supply system are powered off simultaneously, coils of the two first contactors are powered off and cannot be attracted, and the main control high-compatibility power supply is disconnected with the power supply system;
The first contactor of the main control high-compatibility power supply is matched with the first contactor of the power supply system, and magnetic attraction is generated when the power supply is electrified, so that the first contactor and the first contactor are connected together, a circuit is conducted, and the first contactor is disconnected when the power supply is disconnected;
The second contactor of the standby high-compatibility power supply and the second contactor of the power supply system are electrified at the same time, coils of the two second contactors are electrified to be mutually attracted, and the standby high-compatibility power supply and the power supply system are mutually connected;
the second contactor of the standby high-compatibility power supply is matched with the second contactor of the power supply system, and magnetic attraction can be generated when the second contactor is electrified, so that the second contactor is connected together, a circuit is conducted, and the second contactor is disconnected when the second contactor is powered off.
Referring to fig. 5, the switching process for performing main parameter compensation on the standby high-compatibility power supply and the main high-compatibility power supply includes the following steps:
establishing a loop change model of power-off and power-on of a power supply system;
calculating by using a loop change model of power-off and power-on of a power supply system, and at the time t in the switching process, controlling the descending speed of the voltage of the high-compatibility power supply in the power supply system;
Calculating by using a loop change model of power-off and power-on of a power supply system, and at the moment t in the switching process, increasing the voltage of a standby high-compatibility power supply in the power supply system;
the method for calculating comprises the steps of searching an input voltage value closest to a first power supply voltage in a loop change model of power-off and power-on of a power supply system, calculating the descending speed of the voltage of a main control high-compatibility power supply in the power supply system at the time t in the switching process by using a main fitting function corresponding to the input voltage value, and calculating the ascending speed of the voltage of a standby high-compatibility power supply in the power supply system at the time t in the switching process by using a subordinate fitting function corresponding to the input voltage value;
Calculating a first electric energy value which is required to be compensated by the power supply system at the time t in the switching process, wherein the first electric energy value is obtained by subtracting the rising speed from the falling speed, and the voltage of the whole loop can be ensured to be the first power supply voltage during compensation;
If the first electric energy value is positive, compensating positive current, and if the first electric energy value is negative, compensating negative current;
And summarizing the first electric energy value which corresponds to each moment in the whole switching process and is to be compensated by the power supply system, and obtaining main parameter compensation.
Referring to fig. 6, the step of starting the master high-compatibility power supply to enter a power supply state includes the steps of:
Acquiring a third power state of the standby high-compatibility power supply when the standby high-compatibility power supply normally operates, wherein the third power state comprises a third power supply voltage, a third power supply frequency and a third power supply phase sequence;
Starting a main control high-compatibility power supply to a fourth power supply state, wherein the fourth power supply state comprises a fourth power supply voltage, a fourth power supply frequency and a fourth power supply phase sequence;
the fourth power supply voltage is equal to the third power supply voltage, the fourth power supply frequency is equal to the third power supply frequency, and the fourth power supply phase sequence is consistent with the third power supply phase sequence.
Referring to fig. 7, the switching of the master high-compatibility power supply to the power supply system includes the steps of:
The second contactor of the standby high-compatibility power supply and the second contactor of the power supply system are powered off simultaneously, coils of the two second contactors are powered on and cannot be attracted, and the standby high-compatibility power supply is disconnected with the power supply system;
the first contactor of the main control high-compatibility power supply and the first contactor of the power supply system are electrified at the same time, coils of the two first contactors are powered off and mutually attracted, and the main control high-compatibility power supply and the power supply system are connected with each other.
Referring to fig. 8, the switching process for performing secondary parameter compensation on the main high-compatibility power supply and the standby high-compatibility power supply includes the following steps:
calculating by using a loop change model of power-off and power-on of the power supply system, and at the time t in the switching process, reducing the voltage of the standby high-compatibility power supply in the power supply system;
calculating by using a loop change model of power-off and power-on of a power supply system, and at the moment t in the switching process, controlling the rising speed of the voltage of a high-compatibility power supply in the power supply system;
The method for calculating is that an input voltage value closest to the voltage of the third power supply is found in a loop change model of power-off and power-on of the power supply system, a main fitting function corresponding to the input voltage value is used for calculating the descending speed of the voltage of the standby high-compatibility power supply in the power supply system at the time t in the switching process, a subordinate fitting function corresponding to the input voltage value is used for calculating the ascending speed of the voltage of the main control high-compatibility power supply in the power supply system at the time t in the switching process;
calculating a second electric energy value which is required to be compensated by the power supply system at the moment t in the switching process, wherein the second electric energy value is obtained by subtracting the voltage rising speed of the main control high-compatibility power supply from the voltage falling speed of the standby high-compatibility power supply, if the second electric energy value is positive, compensating positive current, and if the second electric energy value is negative, compensating negative current;
And summarizing the second electric energy value which corresponds to each moment in the whole switching process and is to be compensated by the power supply system, and obtaining the auxiliary parameter compensation.
Referring to fig. 9, the loop change model for power down and power up of the power supply system is established, which comprises the following steps:
At least one input voltage value of a power supply system is obtained, the input voltage values are uniformly distributed in a voltage range used by the power supply system, and the distance between adjacent input voltage values is smaller than a preset value;
A plurality of input voltage values are used for approximation, i.e. the input voltage values are used instead of voltages close to the input voltage values;
When the power supply voltage of the power supply system is an input voltage value, obtaining the voltage change condition in a loop of the power supply system after the input voltage is disconnected;
Drawing a voltage change curve corresponding to the input voltage value, fitting the curve to obtain a main fitting function, and enabling the input voltage value to correspond to the main fitting function one by one;
When the power supply voltage of the power supply system is 0, obtaining the voltage change condition in a loop of the power supply system after the access power supply voltage is an input voltage value;
drawing a voltage change curve corresponding to the input voltage value, fitting the curve to obtain a subordinate fitting function, and corresponding the input voltage value to the subordinate fitting function one by one;
the loop change model of power-off and power-on of the power supply system is used for predicting the change condition of the internal voltage at each moment before the power supply system reaches a stable value when the power supply system is powered off or power-on, so as to determine the compensation value at each moment.
A power supply switching control system of a high-compatibility power supply is used for realizing the power supply switching control method of the high-compatibility power supply, and comprises the following steps:
The fault prediction module is used for carrying out fault precursor analysis on the main control high-compatibility power supply;
the power supply preparation module starts the standby high-compatibility power supply to enter a power supply state when the power supply preparation module analyzes and obtains that the main control high-compatibility power supply has fault hidden trouble;
The power supply switching module is used for disconnecting the main control high-compatibility power supply from the power supply system when the main control high-compatibility power supply fails and switching the standby high-compatibility power supply to the power supply system, and when the main control high-compatibility power supply is overhauled, the power supply switching module starts the main control high-compatibility power supply to enter a power supply state, switches the main control high-compatibility power supply to the power supply system and closes the standby high-compatibility power supply;
The model building module is used for building a loop change model of power failure and power on of the power supply system;
The power supply compensation module is used for carrying out main parameter compensation or auxiliary parameter compensation on the standby high-compatibility power supply and the main control high-compatibility power supply in the power supply switching process;
And the data storage module records and stores the data of the main control high-compatibility power supply and the standby high-compatibility power supply in each operation.
The working process of the power supply switching control system of the high-compatibility power supply is as follows:
Step one: the fault prediction module analyzes fault precursors of the main control high-compatibility power supply, and if the fault precursors of the main control high-compatibility power supply are analyzed, the power supply preparation module starts the standby high-compatibility power supply to enter a power supply state;
step two: in a preset time, if the main control high-compatibility power supply does not have faults, the power supply preparation module turns off the standby high-compatibility power supply;
Step three: if the main control high-compatibility power supply fails, the power supply switching module disconnects the main control high-compatibility power supply from the power supply system, switches the standby high-compatibility power supply to the power supply system, and independently supplies power to the power supply system by the standby high-compatibility power supply, and the power supply compensation module performs main parameter compensation on the standby high-compatibility power supply and the main control high-compatibility power supply in the switching process;
Step four: after the power supply is switched, the main control high-compatibility power supply is overhauled, when the main control high-compatibility power supply is overhauled, the power supply switching module starts the main control high-compatibility power supply to enter a power supply state, switches the main control high-compatibility power supply to a power supply system, closes the standby high-compatibility power supply, and performs auxiliary parameter compensation on the main control high-compatibility power supply and the standby high-compatibility power supply by the power supply compensation module in the switching process;
step five: in the power supply switching process, the data storage module records and stores the data of the main control high-compatibility power supply and the standby high-compatibility power supply in each operation as operation history information.
Still further, the present disclosure also proposes a storage medium having a computer readable program stored thereon, the computer readable program executing the power supply switching control method of the high-compatibility power supply described above when called.
It is understood that the storage medium may be a magnetic medium, e.g., floppy disk, hard disk, magnetic tape; optical media such as DVD; or a semiconductor medium such as a solid state disk SolidStateDisk, SSD, etc.
In summary, the invention has the advantages that: through setting up power preparation module, power switching module, model establishment module and power compensation module, when probably breaking down, start reserve high compatible power in advance, when breaking down, then switch with the electric system to reserve high compatible power on to in the switching process, compensate the circuit, guarantee that the voltage in the whole circuit keeps constant value, can form seamless butt joint, avoid power supply system when the input parameter, by the influence of electric power fluctuation, and then avoid producing great loss, and after the restoration of the high compatible power of master control, switch back the high compatible power of master control again, guarantee the stability of system, and carry out compensation control, avoid causing great impulse current.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The power supply switching control method of the high-compatibility power supply is characterized by comprising the following steps of:
The main control high-compatibility power supply and the standby high-compatibility power supply are arranged in parallel, and the main control high-compatibility power supply provides power for the power supply system, and the standby high-compatibility power supply does not provide power for the power supply system;
Analyzing fault precursors of the main control high-compatibility power supply, if the fault hidden danger exists in the main control high-compatibility power supply, starting the standby high-compatibility power supply to enter a power supply state, and if the fault hidden danger exists in the main control high-compatibility power supply, not performing any operation;
If the main control high-compatibility power supply fails within the preset time, the standby high-compatibility power supply is turned off;
If the main control high-compatibility power supply fails, the connection between the main control high-compatibility power supply and the power supply system is disconnected, the standby high-compatibility power supply is switched to the power supply system, the standby high-compatibility power supply is used for independently supplying power to the power supply system, and main parameter compensation is carried out on the standby high-compatibility power supply and the main control high-compatibility power supply in the switching process;
the switching process for performing main parameter compensation on the standby high-compatibility power supply and the main control high-compatibility power supply comprises the following steps:
establishing a loop change model of power-off and power-on of a power supply system;
the establishment of the loop change model for power-off and power-on of the power supply system comprises the following steps:
At least one input voltage value of a power supply system is obtained, the input voltage values are uniformly distributed in a voltage range used by the power supply system, and the distance between adjacent input voltage values is smaller than a preset value;
When the power supply voltage of the power supply system is an input voltage value, obtaining the voltage change condition in a loop of the power supply system after the input voltage is disconnected;
Drawing a voltage change curve corresponding to the input voltage value, fitting the curve to obtain a main fitting function, and enabling the input voltage value to correspond to the main fitting function one by one;
When the power supply voltage of the power supply system is 0, obtaining the voltage change condition in a loop of the power supply system after the access power supply voltage is an input voltage value;
drawing a voltage change curve corresponding to the input voltage value, fitting the curve to obtain a subordinate fitting function, and corresponding the input voltage value to the subordinate fitting function one by one;
calculating by using a loop change model of power-off and power-on of a power supply system, and at the time t in the switching process, controlling the descending speed of the voltage of the high-compatibility power supply in the power supply system;
Calculating by using a loop change model of power-off and power-on of a power supply system, and at the moment t in the switching process, increasing the voltage of a standby high-compatibility power supply in the power supply system;
Calculating a first electric energy value which is required to be compensated by the power supply system at a moment t in the switching process, compensating positive current if the first electric energy value is positive, and compensating negative current if the first electric energy value is negative;
Summarizing first electric energy values which correspond to each moment in the whole switching process and are to be compensated by the power supply system to obtain main parameter compensation;
after the power supply is switched, overhauling the main control high-compatibility power supply, when the main control high-compatibility power supply is overhauled, starting the main control high-compatibility power supply to enter a power supply state, switching the main control high-compatibility power supply to a power supply system, closing the standby high-compatibility power supply, and performing auxiliary parameter compensation on the main control high-compatibility power supply and the standby high-compatibility power supply in the switching process;
The switching process for carrying out auxiliary parameter compensation on the main control high-compatibility power supply and the standby high-compatibility power supply comprises the following steps:
calculating by using a loop change model of power-off and power-on of the power supply system, and at the time t in the switching process, reducing the voltage of the standby high-compatibility power supply in the power supply system;
calculating by using a loop change model of power-off and power-on of a power supply system, and at the moment t in the switching process, controlling the rising speed of the voltage of a high-compatibility power supply in the power supply system;
Calculating a second electric energy value which is required to be compensated by the power supply system at the time t in the switching process, if the second electric energy value is positive, compensating positive current, and if the second electric energy value is negative, compensating negative current;
summarizing second electric energy values which correspond to each moment in the whole switching process and are to be compensated by the power supply system, and obtaining auxiliary parameter compensation;
in the power supply switching process, the data of the main control high-compatibility power supply and the standby high-compatibility power supply in each operation are recorded as operation history information.
2. The power supply switching control method of a high-compatibility power supply according to claim 1, wherein the fault precursor analysis of the master high-compatibility power supply includes the steps of:
Acquiring the normal operation temperature of a power adapter of a main control high-compatibility power supply, and analyzing to obtain the upper temperature threshold value of the power adapter according to the normal operation temperature;
Acquiring the real-time temperature of the power adapter, judging whether the real-time temperature is greater than a threshold value above the temperature, if so, enabling the main control high-compatibility power supply to have fault risk, and if not, enabling the main control high-compatibility power supply to have no fault risk;
acquiring power frequency historical data of a power adapter of a main control high-compatibility power supply, and analyzing to obtain a power frequency threshold value of the power adapter according to the power frequency historical data;
acquiring the real-time power supply frequency of the power supply adapter, judging whether the real-time power supply frequency is larger than a power supply frequency threshold value, if so, enabling the main control high-compatibility power supply to have fault risk, and if not, enabling the main control high-compatibility power supply to have no fault risk;
Acquiring historical data of the output power of the main control high-compatibility power supply, and analyzing to obtain the working range of the output power according to the historical data of the output power;
and monitoring the real-time output power of the main control high-compatibility power supply, judging whether the real-time output power is in the working range of the output power, if so, judging that the main control high-compatibility power supply has no fault risk, and if not, judging that the main control high-compatibility power supply has the fault risk.
3. The power supply switching control method of a high-compatibility power supply according to claim 2, wherein said starting the standby high-compatibility power supply to enter the power supply state comprises the steps of:
Acquiring a first power state of a main control high-compatibility power supply when the main control high-compatibility power supply normally operates, wherein the first power state comprises a first power supply voltage, a first power supply frequency and a first power supply phase sequence;
Starting a standby high-compatibility power supply to a second power supply state, wherein the second power supply state comprises a second power supply voltage, a second power supply frequency and a second power supply phase sequence;
the second power supply voltage is equal to the first power supply voltage, the second power supply frequency is equal to the first power supply frequency, and the second power supply phase sequence is consistent with the first power supply phase sequence.
4. A power supply switching control method of a high-compatibility power supply according to claim 3, wherein said switching the standby high-compatibility power supply to the power supply system comprises the steps of:
the first contactor of the main control high-compatibility power supply and the first contactor of the power supply system are powered off simultaneously, coils of the two first contactors are powered off and cannot be attracted, and the main control high-compatibility power supply is disconnected with the power supply system;
the second contactor of the standby high-compatibility power supply and the second contactor of the power supply system are electrified at the same time, coils of the two second contactors are electrified and mutually attracted, and the standby high-compatibility power supply and the power supply system are connected with each other.
5. The power supply switching control method of a high-compatibility power supply according to claim 4, wherein the starting the master control high-compatibility power supply to enter a power supply state comprises the steps of:
Acquiring a third power state of the standby high-compatibility power supply when the standby high-compatibility power supply normally operates, wherein the third power state comprises a third power supply voltage, a third power supply frequency and a third power supply phase sequence;
Starting a main control high-compatibility power supply to a fourth power supply state, wherein the fourth power supply state comprises a fourth power supply voltage, a fourth power supply frequency and a fourth power supply phase sequence;
the fourth power supply voltage is equal to the third power supply voltage, the fourth power supply frequency is equal to the third power supply frequency, and the fourth power supply phase sequence is consistent with the third power supply phase sequence.
6. The power supply switching control method of a high-compatibility power supply according to claim 5, wherein the switching of the master high-compatibility power supply to the power supply system comprises the steps of:
The second contactor of the standby high-compatibility power supply and the second contactor of the power supply system are powered off simultaneously, coils of the two second contactors are powered on and cannot be attracted, and the standby high-compatibility power supply is disconnected with the power supply system;
the first contactor of the main control high-compatibility power supply and the first contactor of the power supply system are electrified at the same time, coils of the two first contactors are powered off and mutually attracted, and the main control high-compatibility power supply and the power supply system are connected with each other.
7. A power supply switching control system of a high-compatibility power supply for realizing the power supply switching control method of the high-compatibility power supply according to any one of claims 1 to 6, characterized by comprising:
The fault prediction module is used for carrying out fault precursor analysis on the main control high-compatibility power supply;
the power supply preparation module starts the standby high-compatibility power supply to enter a power supply state when the power supply preparation module analyzes and obtains that the main control high-compatibility power supply has fault hidden trouble;
The power supply switching module is used for disconnecting the main control high-compatibility power supply from the power supply system when the main control high-compatibility power supply fails and switching the standby high-compatibility power supply to the power supply system, and when the main control high-compatibility power supply is overhauled, the power supply switching module starts the main control high-compatibility power supply to enter a power supply state, switches the main control high-compatibility power supply to the power supply system and closes the standby high-compatibility power supply;
The model building module is used for building a loop change model of power failure and power on of the power supply system;
The power supply compensation module is used for carrying out main parameter compensation or auxiliary parameter compensation on the standby high-compatibility power supply and the main control high-compatibility power supply in the power supply switching process;
And the data storage module records and stores the data of the main control high-compatibility power supply and the standby high-compatibility power supply in each operation.
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