CN117498532B - Intelligent emergency power supply system for mine - Google Patents
Intelligent emergency power supply system for mine Download PDFInfo
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- CN117498532B CN117498532B CN202410005166.6A CN202410005166A CN117498532B CN 117498532 B CN117498532 B CN 117498532B CN 202410005166 A CN202410005166 A CN 202410005166A CN 117498532 B CN117498532 B CN 117498532B
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- 238000003860 storage Methods 0.000 claims abstract description 44
- 238000011156 evaluation Methods 0.000 claims abstract description 33
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
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Classifications
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Mining
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
Abstract
The invention relates to the technical field of power supply, in particular to an intelligent emergency power supply system for a mine, which comprises an emergency battery module for emergency power supply, a first acquisition unit for acquiring information of the mine, a second acquisition unit for acquiring conventional power supply voltage, a third acquisition unit for acquiring capacity of each storage battery, a storage module for storing the acquired information, an emergency determination module for determining whether operation of the conventional power supply accords with a preset standard according to a conventional power supply evaluation value and determining whether single power supply of the emergency battery module accords with the preset standard according to a power supply capacity consumption average value, and a display module for displaying prompt information, wherein reliability and safety of emergency power supply of the mine are improved.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to an intelligent emergency power supply system for a mine.
Background
The mine emergency power supply system is a power supply system for coping with emergency events in coal mine production, and mainly aims to provide reliable power supply in time when a conventional power supply fails or is interrupted so as to ensure normal production and personnel safety of a mine.
Chinese patent publication No.: CN114844197a discloses an emergency energy storage power supply system of a local ventilator for a coal mine. The system comprises a battery part, an inversion unit, a transformer unit, an information acquisition unit, a charging unit, a control unit, a display unit, a key unit and an local ventilator; the connection relation is as follows: the control unit is respectively connected with the battery part, the display unit, the key unit, the information acquisition unit, the charging unit and the inversion unit; the battery part, the inversion unit, the transformer unit and the local ventilator are connected in sequence; the information acquisition unit is also respectively connected with the battery part, the inversion unit, the transformer unit and the local ventilator; the battery part is connected with the charging unit. It can be seen that the system can not timely switch the emergency power supply according to the conventional power supply and the information in the mine, and can not grasp the state of the emergency power supply, so that the reliability and safety of the emergency power supply of the mine are insufficient.
Disclosure of Invention
Therefore, the invention provides an intelligent emergency power supply system for a mine, which is used for solving the problems of insufficient reliability and safety of the emergency power supply system for the mine caused by lack of power supply and monitoring of mine environment in the prior art.
In order to achieve the above object, the present invention provides an intelligent emergency power system for a mine, comprising:
the emergency battery module comprises a plurality of storage battery packs which are arranged in the mine at equal intervals;
the acquisition module comprises a first acquisition unit used for acquiring information of the mine, a second acquisition unit used for acquiring conventional power supply voltage and a third acquisition unit used for acquiring capacity of each storage battery pack;
the first acquisition unit comprises a plurality of vibration sensors arranged at adjacent positions of the storage battery pack and used for acquiring vibration information, and a plurality of gas concentration sensors arranged at adjacent positions of the vibration sensors and used for acquiring gas concentration in a mine;
the storage module is connected with the acquisition module and used for storing information acquired by the acquisition module;
the emergency determining module is respectively connected with the acquisition module and the storage module and is used for judging whether the operation of the conventional power supply meets the preset standard according to the conventional power supply evaluation value and judging whether the single power supply of the emergency battery module meets the preset standard according to the power supply capacity consumption average value;
and the display module is connected with the emergency determination module and used for displaying prompt information judged by the emergency determination module.
Further, the conventional power supply evaluation value is set to be Q, Q is obtained according to the formula (1),
（1），
in the formula (1),for the voltage evaluation coefficient, set +.>，/>For the duration evaluation factor, set +.>，U e For the rated voltage of the conventional power supply, U m Is extreme voltage of single fluctuation of conventional voltage, U 0 For the preset voltage fluctuation threshold value, t is the duration of single fluctuation of the conventional voltage, t 0 And the threshold value of the fluctuation duration is preset.
Further, when the emergency determination module determines that the operation of the conventional power supply does not meet the preset standard based on the conventional power supply evaluation value, the reason that the operation of the conventional power supply does not meet the preset standard is determined based on the frequency of the voltage fluctuation event and the duty ratio of the level, or the conventional power supply is cut off, the emergency battery module is started, and an emergency power supply prompt is sent.
Further, the frequency and level of the voltage fluctuation event is determined based on a time-vibration amplitude-voltage coordinate system constructed from historical data in the memory module.
Further, the emergency determination module enables the voltage fluctuation amplitude to exceed U within a preset time period 0 The frequency of voltage ripple events is counted,
the event that only voltage fluctuations exist within the coordinate system is marked as a primary voltage fluctuation event,
and marking the event with vibration in the period of the event of voltage fluctuation in the coordinate system as a secondary voltage fluctuation event.
Further, the emergency determination module determines a reason that the operation of the conventional power supply does not meet the preset standard based on the frequency and the level duty ratio of the voltage fluctuation event and sends out a corresponding prompt, wherein the reason comprises insufficient power supply power of the power supply end, capacity expansion of the power supply end, overload of the load end and unstable operation of load end equipment caused by vibration.
Further, the emergency determination module is provided with a plurality of capacity expansion modes aiming at the capacity expansion of the power supply end, and the capacity expansion amplitude of each capacity expansion mode aiming at the power supply end is different.
Further, the emergency determination module determines that the single power supply of the emergency battery module does not meet the preset standard based on the power supply capacity consumption average value, expands the capacity of the storage battery pack to a corresponding value and sends out a prompt for expanding the capacity of the emergency battery module, or determines that the storage battery pack is damaged and sends out a prompt for inspecting the storage battery pack.
Further, the power supply capacity consumption average value is set to be L, L is obtained according to a formula (2),
（2），
in the formula (2),the consumed capacity for single power supply of the ith battery, i=1, 2..n, n is the total number of battery packs in the emergency battery module.
Further, the emergency determination module preliminarily determines whether to charge the storage battery pack based on the comparison of the ratio of the residual capacity after single power supply of the storage battery pack and the preset residual capacity ratio threshold, and secondarily determines whether to charge the storage battery pack based on the comparison of the gas concentration and the preset gas concentration threshold when the storage battery pack is preliminarily determined to be charged.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the emergency determination module is used for judging whether the operation of the conventional power supply and the power supply of the emergency battery module reach the standard or not according to the acquired information, so that the accurate switching and intelligent self-checking of the standby power supply are realized, and the reliability and the safety of the emergency power supply are improved.
Furthermore, the invention fits the evaluation value of the conventional power supply based on the fluctuation amplitude and the duration of the conventional power supply, so that the evaluation of the conventional power supply can be calibrated scientifically and accurately.
Furthermore, the invention accurately judges the running state of the conventional power supply based on the conventional power supply evaluation value, and realizes the accurate switching of the standby power supply when the running of the processing path does not accord with the preset standard.
Further, when the reason that the operation of the conventional power supply does not meet the preset standard is judged, a time-vibration amplitude-voltage coordinate system is constructed based on the historical data, and the reason that the operation does not meet the standard is determined by analyzing the historical data.
Further, the emergency determination module judges that the unstable operation of the conventional power supply is caused by insufficient power supply of the power supply end, and accordingly capacity expansion is performed.
Furthermore, the power supply capacity consumption average value set by the invention can accurately evaluate the power supply state of the emergency battery module, thereby realizing the reliability of the emergency battery module in a self-learning mode.
Furthermore, when the residual capacity ratio of the storage battery pack does not reach the standard, whether the storage battery pack is charged or not is determined by further detecting the gas concentration, so that the safety and the reliability of the emergency battery module are further improved.
Drawings
FIG. 1 is a schematic diagram of a mining intelligent emergency power supply system according to an embodiment of the present invention;
FIG. 2 is a flowchart for determining whether the operation of the conventional power supply meets the preset standard according to the embodiment of the present invention;
FIG. 3 is a flowchart of determining the reason why the operation of the conventional power supply does not meet the preset standard according to the embodiment of the present invention;
fig. 4 is a flowchart for determining whether the single power supply of the emergency battery module meets a preset standard according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that the data in this embodiment are obtained by comprehensively analyzing and evaluating the historical detection data of the mine intelligent emergency power supply system in the three months before the current operation and the corresponding historical detection results.
The system comprehensively determines the numerical value of each preset parameter standard aiming at the current operation according to 11641 times of information collection and system operation which are accumulated in the first three months before the current operation. It will be understood by those skilled in the art that the determination manner of the system according to the present invention for the parameters mentioned above may be that the value with the highest duty ratio is selected as the preset standard parameter according to the data distribution, the weighted summation is used to take the obtained value as the preset standard parameter, each history data is substituted into a specific formula, and the value obtained by using the formula is taken as the preset standard parameter or other selection manner, as long as different specific conditions in the single item determination process can be definitely defined by the obtained value by the system according to the present invention are satisfied.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3, and fig. 4, which are schematic structural diagrams of an intelligent emergency power system for mine according to an embodiment of the invention; the embodiment of the invention judges whether the operation of the conventional power supply accords with a flow chart of a preset standard or not; the embodiment of the invention provides a flow chart for judging the reason that the operation of the conventional power supply does not accord with the preset standard; the embodiment of the invention judges whether the single power supply of the emergency battery module meets the flow chart of the preset standard.
The embodiment of the invention provides an intelligent emergency power supply system for a mine, which comprises the following components:
the emergency battery module comprises a plurality of storage battery packs which are arranged in the mine at equal intervals;
the acquisition module comprises a first acquisition unit used for acquiring information of the mine, a second acquisition unit used for acquiring conventional power supply voltage and a third acquisition unit used for acquiring capacity of each storage battery pack;
the first acquisition unit comprises a plurality of vibration sensors arranged at adjacent positions of the storage battery pack and used for acquiring vibration information, and a plurality of gas concentration sensors arranged at adjacent positions of the vibration sensors and used for acquiring gas concentration in a mine;
the storage module is connected with the acquisition module and used for storing information acquired by the acquisition module;
the emergency determining module is respectively connected with the acquisition module and the storage module and is used for judging whether the operation of the conventional power supply meets the preset standard according to the conventional power supply evaluation value and judging whether the single power supply of the emergency battery module meets the preset standard according to the power supply capacity consumption average value;
and the display module is connected with the emergency determination module and used for displaying prompt information judged by the emergency determination module.
Specifically, the storage battery pack, such as a lead-acid storage battery pack, is not particularly limited, and only needs to meet the mining safety standard.
Specifically, the emergency determination module, such as a computer, is not limited in particular, and is configured to perform corresponding determination according to the collected parameters.
Specifically, the conventional power supply evaluation value is set to be Q, Q is obtained according to the formula (1),
（1），
in the formula (1),for the voltage evaluation coefficient, set +.>，/>For the duration evaluation factor, set +.>，U e For the rated voltage of the conventional power supply, U is set e =380V，U m Is extreme voltage of single fluctuation of conventional voltage, U 0 For presetting voltage fluctuation threshold, U is set 0 =18v, t is the duration of a single fluctuation of the regular voltage, t 0 For presetting the fluctuation time length threshold, setting t 0 =30ms。
Specifically, referring to fig. 2, the emergency determination module determines whether the operation of the conventional power supply meets a preset criterion based on the conventional power supply evaluation value, wherein,
the first judgment is that the emergency determination module judges that the operation of the conventional power supply meets a preset standard, and the conventional power supply is continuously used for supplying power to a load end; the first judgment meets the condition that the conventional power supply evaluation value is smaller than a first preset evaluation value threshold value, and the first preset evaluation value threshold value is set to be 1.97;
the emergency determination module determines that the operation of the conventional power supply does not meet a preset standard, and the emergency determination module determines the reason that the operation of the conventional power supply does not meet the preset standard based on the frequency and the level duty ratio of the voltage fluctuation event; the second judgment meets the condition that the conventional power supply evaluation value is larger than or equal to the first preset evaluation value threshold and smaller than a second preset evaluation value threshold, and the second preset evaluation value threshold is set to be 3.20;
thirdly, judging that the operation of the conventional power supply does not meet a preset standard by the emergency determination module, and cutting off the conventional power supply, starting the emergency battery module and sending out a prompt of emergency power supply by the emergency determination module; the third determination satisfies that the normal power supply evaluation value is equal to or greater than the second preset evaluation value threshold.
Specifically, the frequency and the grade of the voltage fluctuation event are determined based on a time-vibration amplitude-voltage coordinate system constructed by historical data in the storage module, wherein the time-vibration amplitude-voltage coordinate system is constructed in a mode that time is X-axis, vibration amplitude and normal power supply voltage are Y-axis, a time-vibration amplitude curve and a time-normal power supply voltage curve are respectively generated, and the units of the vibration amplitude and the normal power supply in the Y-axis are adjusted to optimize the arrangement of the two curves.
Specifically, the emergency determination module determines that the voltage fluctuation amplitude exceeds U 0 Is noted as a voltage fluctuation event,
and (3) recording the frequency of the voltage fluctuation events in the preset time length as the frequency of the voltage fluctuation events, and setting the preset time length to be 24 hours.
Marking the event of only voltage fluctuation in the coordinate system as a first-level voltage fluctuation event, namely recording the time-conventional power supply voltage curve to the amplitude exceeding U 0 Wave of (c) and time-shockThe amplitude profile has no fluctuations.
Marking the event of vibration in the period of the event of voltage fluctuation in the coordinate system as a secondary voltage fluctuation event, recording fluctuation with the amplitude exceeding U0 in the instant-normal power supply voltage curve, and recording the amplitude of the fluctuation of the time-vibration amplitude curve to be more than or equal to mu 0 Mu is set 0 =2.00mm。
Specifically, referring to fig. 3, the emergency determination module determines a cause of the operation of the conventional power supply not meeting the preset criteria based on the frequency and the duty ratio of the level of the voltage fluctuation event, wherein,
the first reason is determined that the emergency determination module determines that the power supply end is insufficient in power supply, and the emergency determination module expands the capacity of the power supply end to a corresponding value according to the difference value between the preset frequency and the frequency of the voltage fluctuation event and sends a prompt of expanding the capacity of the power supply end; the first reason judges that the frequency meeting the voltage fluctuation event is smaller than a preset frequency, and the preset frequency is set to be 6.5 times/h;
the second reason is judged to be that the emergency determination module judges that the load end is overloaded and sends out a prompt of overload of the load end; the second reason judges that the frequency of the voltage fluctuation event is more than or equal to a preset frequency and the duty ratio of the primary voltage fluctuation event is more than or equal to a preset duty ratio, and the preset duty ratio is set to be 50%;
the third cause is judged to be that the emergency determination module judges that the vibration causes unstable operation of the load end equipment and sends out a prompt that the vibration causes unstable operation of the equipment; and the third factor judges that the frequency of the voltage fluctuation event is larger than or equal to a preset frequency and the duty ratio of the secondary voltage fluctuation event is larger than a preset duty ratio.
Specifically, the emergency determination module calculates a difference between a preset frequency and the frequency of the voltage fluctuation event under the first reason judgment, and marks the difference as a frequency difference, and the emergency determination module determines a capacity expansion mode for the power supply terminal based on the frequency difference,
the first capacity expansion mode is that the emergency determination module expands the power supply of the power supply end to a corresponding value by using a first preset capacity expansion coefficient 1.3; the first capacity expansion mode meets the condition that the frequency difference value is smaller than a first preset frequency difference value, and the first preset frequency difference value is set to be 1.2 times/h;
the second capacity expansion mode is that the emergency determination module expands the power supply of the power supply end to a corresponding value by using a second preset capacity expansion coefficient 1.2; the second capacity expansion mode meets the condition that the frequency difference value is larger than or equal to the first preset frequency difference value and smaller than a second preset frequency difference value, and the second preset frequency difference value is set to be 2.8 times/h;
the third capacity expansion mode is that the emergency determination module expands the power supply of the power supply end to a corresponding value by using a third preset capacity expansion coefficient 1.1; the third capacity expansion mode meets the condition that the frequency difference value is larger than or equal to the second preset frequency difference value and smaller than the third preset frequency difference value, and the third preset frequency difference value is set to be 4.2 times/h.
Specifically, referring to fig. 4, the emergency determination module determines whether the emergency battery module single power supply meets a preset standard based on the power supply capacity consumption average value, wherein,
the first type of judgment is that the emergency determination module judges that the single power supply of the emergency battery module meets a preset standard, and the next power supply is carried out according to the current parameters; the first type of judgment meets the condition that the power supply capacity consumption average value is smaller than a first preset power supply capacity consumption average value, and the first preset power supply capacity consumption average value is set to be 70%;
the second type is that the emergency determination module determines that the single power supply of the emergency battery module does not meet a preset standard, and the emergency determination module expands the capacity of the storage battery pack to a corresponding value according to the difference value between the power supply capacity consumption average value and the first preset power supply capacity consumption average value and sends out a prompt of expanding the capacity of the emergency battery module; the second type of judgment meets the condition that the power supply capacity consumption average value is larger than or equal to the first preset power supply capacity consumption average value and smaller than a second preset power supply capacity consumption average value, and the second preset power supply capacity consumption average value is set to be 86%;
the third type of judgment is that the emergency determination module judges that the single power supply of the emergency battery module does not meet the preset standard and judges that the reason that the single power supply does not meet the preset standard is that the storage battery pack is damaged, and the emergency determination module sends a prompt for inspecting the storage battery pack; and the third class judges that the power supply capacity consumption average value is larger than or equal to the second preset power supply capacity consumption average value.
Specifically, the power supply capacity consumption average value is set to be L, L is obtained according to the formula (2),
（2），
in the formula (2),the consumed capacity for single power supply of the ith battery, i=1, 2..n, n is the total number of battery packs in the emergency battery module.
Specifically, the emergency determination module preliminarily determines whether to charge the storage battery based on the comparison of the ratio of the residual capacity after single power supply of the storage battery to a preset residual capacity ratio threshold, and if the ratio of the residual capacity is smaller than or equal to the preset residual capacity ratio threshold, the emergency determination module preliminarily determines to charge the storage battery, and the preset residual capacity ratio threshold is set to be 30%.
Specifically, when the storage battery is primarily determined to be charged, whether the storage battery is charged is secondarily determined based on comparison of the gas concentration and a preset gas concentration threshold, if the gas concentration is smaller than or equal to the preset gas concentration threshold, the storage battery is secondarily determined to be charged, and the preset gas concentration threshold is set to be 1.5%.
Example 1
Taking a No. 3 mine of XXXX coal field limited company as an example, the mine is provided with an intelligent emergency power supply system for the mine, and the emergency power supply system is used for emergency power supply of illumination, exhaust and communication in the mine.
XX is divided into XX seconds in XX of 10 months of 2023 and XX of XX days, the second acquisition unit acquires that the voltage of the conventional power supply fluctuates, the voltage drops to 315V suddenly, and the duration is 34ms.
The emergency determination module obtains a power evaluation value of Q=2.50 based on the acquired data.
And if the evaluation value of the conventional power supply is greater than or equal to the first preset evaluation value threshold value of 1.97 and less than the second preset evaluation value threshold value of 3.20, the emergency determination module judges that the operation of the conventional power supply does not meet the preset standard, and the emergency determination module judges the reason that the operation of the conventional power supply does not meet the preset standard based on the frequency of the voltage fluctuation event and the duty ratio of the level.
The emergency determination module retrieves the 24 hours data stored in the storage module, constructs a time-vibration amplitude-voltage coordinate system, and the statistical result is shown in table 1,
table 1 time period-voltage ripple event statistics
| Number of voltage fluctuation events | 10 to 11 hours | 11-12 hours | 12 time-13 time | 13 time-14 time | 14 to 15 hours | 15 to 16 hours | 16-17 hours | 17-18 hours | 18 to 19 hours |
| First level | 9 | 5 | 2 | 8 | 7 | 2 | 3 | 7 | 2 |
| Second-level | 2 | 3 | 0 | 3 | 8 | 9 | 2 | 0 | 2 |
| Number of voltage fluctuation events | 19-20 hours | 20 time-21 time | 21 time-22 time | 22 hours-23 hours | 23 hours-24 hours | 0 time-1 time | 1 time-2 time | 2 time-3 time | 3 hours to 4 hours |
| First level | 12 | 6 | 2 | 2 | 7 | 5 | 8 | 1 | 0 |
| Second-level | 1 | 2 | 5 | 2 | 3 | 8 | 0 | 0 | 1 |
| Number of voltage fluctuation events | 4 to 5 hours | 5 to 6 hours | 6 to 7 hours | 7 to 8 hours | 8 to 9 hours | 9 to 10 hours | |||
| First level | 2 | 0 | 2 | 5 | 8 | 12 | |||
| Second-level | 2 | 0 | 1 | 0 | 0 | 4 |
After analysis and statistics of the data in table 1, it follows:
the voltage fluctuation event totaled 175 times, with the primary voltage fluctuation event 117 times and the secondary voltage fluctuation event 58 times.
The frequency of voltage fluctuation events was 7.3 times/h, and the primary voltage fluctuation event was 67%.
The emergency determining module judges that the load end is overloaded and sends a prompt of the overload of the load end to the display module.
Example 2
Taking the intelligent emergency power supply system for mines in embodiment 1 as an example, whether the single power supply of the emergency battery module meets the preset standard or not is judged.
XX is divided into XX seconds in XX of 10 months of 2023 and XX of XX days, the second acquisition unit acquires that the voltage of the conventional power supply fluctuates, the voltage drops to 286V suddenly, and the duration is 70ms.
The emergency determination module obtains a power evaluation value of Q=3.91 based on the acquired data.
The emergency determination module determines that the operation of the conventional power supply does not meet a preset standard, and the emergency determination module cuts off the conventional power supply, starts the emergency battery module and sends out a prompt of emergency power supply.
After this emergency power supply is completed and switched back to the normal power supply, the third acquisition unit acquires the capacity of each battery pack to determine the consumed capacity of the single power supply. The results of the acquisition are shown in Table 2
Table 2 single power supply accumulator battery capacity information table
| Storage battery pack | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| Capacity (%) | 47 | 53 | 75 | 25 | 28 | 26 | 33 | 38 | 47 | 58 | 66 | 59 | 21 | 28 |
| Capacity of consumption (%) | 53 | 47 | 25 | 75 | 72 | 74 | 67 | 62 | 53 | 42 | 34 | 41 | 79 | 72 |
And the average value of the capacitance consumption is L= 56.86%, the average value of the power supply capacity consumption is smaller than 70% of the average value of the first preset power supply capacity consumption, and the single power supply of the battery module meets the preset standard.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An intelligent emergency power supply system for a mine, comprising:
the emergency battery module comprises a plurality of storage battery packs which are arranged in the mine at equal intervals;
the acquisition module comprises a first acquisition unit used for acquiring information of the mine, a second acquisition unit used for acquiring conventional power supply voltage and a third acquisition unit used for acquiring capacity of each storage battery pack;
the first acquisition unit comprises a plurality of vibration sensors arranged at adjacent positions of the storage battery pack and used for acquiring vibration information, and a plurality of gas concentration sensors arranged at adjacent positions of the vibration sensors and used for acquiring gas concentration in a mine;
the storage module is connected with the acquisition module and used for storing information acquired by the acquisition module;
the emergency determining module is respectively connected with the acquisition module and the storage module and is used for judging whether the operation of the conventional power supply meets the preset standard according to the conventional power supply evaluation value and judging whether the single power supply of the emergency battery module meets the preset standard according to the power supply capacity consumption average value;
the display module is connected with the emergency determination module and used for displaying prompt information judged by the emergency determination module;
setting the evaluation value of the conventional power supply as Q, wherein Q is obtained according to a formula (1),
（1），
in the formula (1),for the voltage evaluation coefficient, set +.>，/>For the time length evaluation coefficient, set，U e For the rated voltage of the conventional power supply, U m Is extreme voltage of single fluctuation of conventional voltage, U 0 For the preset voltage fluctuation threshold value, t is the duration of single fluctuation of the conventional voltage, t 0 A preset fluctuation duration threshold value;
and when the emergency determination module judges that the operation of the conventional power supply does not meet the preset standard based on the conventional power supply evaluation value, judging the reason why the operation of the conventional power supply does not meet the preset standard based on the frequency and the level duty ratio of the voltage fluctuation event, or cutting off the conventional power supply, starting the emergency battery module and sending out an emergency power supply prompt.
2. The intelligent emergency power system for mines according to claim 1, wherein the frequency and level of the voltage fluctuation event is determined based on a time-vibration amplitude-voltage coordinate system constructed from historical data in the storage module.
3. The intelligent emergency power supply system for mines according to claim 2, wherein said emergency determination module exceeds the magnitude of the voltage fluctuation exceeding U for a predetermined period of time 0 The frequency of voltage ripple events is counted,
the event that only voltage fluctuations exist within the coordinate system is marked as a primary voltage fluctuation event,
and marking the event with vibration in the period of the event of voltage fluctuation in the coordinate system as a secondary voltage fluctuation event.
4. The intelligent emergency power supply system for mines according to claim 3, wherein the emergency determining module determines a reason why the operation of the conventional power supply does not meet a preset standard based on the frequency and the duty ratio of the level of the voltage fluctuation event and sends out a corresponding prompt, the reason includes that the power supply end is insufficient in power supply and expands the capacity of the power supply end, the load end is overloaded, and the vibration causes unstable operation of the load end equipment.
5. The intelligent emergency power supply system for mines according to claim 4, wherein the emergency determination module is provided with a plurality of capacity expansion modes aiming at the capacity expansion of the power supply end, and the capacity expansion amplitude of each capacity expansion mode aiming at the power supply end is different.
6. The intelligent emergency power supply system for the mine according to claim 5, wherein the emergency determination module expands the capacity of the storage battery pack to a corresponding value and sends a prompt for expanding the capacity of the emergency battery module or determines that the storage battery pack is damaged and sends a prompt for inspecting the storage battery pack when the single power supply of the emergency battery module is judged to not meet a preset standard based on the power supply capacity consumption average value.
7. The intelligent emergency power supply system for mines according to claim 6, wherein the power supply capacity consumption average value is set to be L, L is obtained according to the formula (2),
（2），
in the formula (2),the consumed capacity for single power supply of the ith battery, i=1, 2..n, n is the total number of battery packs in the emergency battery module.
8. The intelligent emergency power supply system for mines according to claim 1, wherein the emergency determination module primarily determines whether to charge the battery pack based on a comparison of a remaining capacity ratio after a single power supply of the battery pack to a preset remaining capacity ratio threshold, and secondarily determines whether to charge the battery pack based on a comparison of a gas concentration to a preset gas concentration threshold when primarily determining to charge the battery pack.
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