CN113049967A - Direct current system on-line monitoring system - Google Patents
Direct current system on-line monitoring system Download PDFInfo
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- CN113049967A CN113049967A CN202110265865.0A CN202110265865A CN113049967A CN 113049967 A CN113049967 A CN 113049967A CN 202110265865 A CN202110265865 A CN 202110265865A CN 113049967 A CN113049967 A CN 113049967A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 72
- 238000012806 monitoring device Methods 0.000 claims abstract description 37
- 238000009413 insulation Methods 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 6
- 239000004964 aerogel Substances 0.000 claims description 4
- 230000005465 channeling Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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Abstract
The invention discloses an on-line monitoring system of a direct current system, which comprises a shell (1), wherein a storage battery pack (2) is arranged at the bottom in the shell (1), and a storage battery on-line monitoring module (3), a remote control module (4), a switching value acquisition module (5), a central monitoring device (6), a charging monitoring module (7), an insulation detection module (8) and an intelligent discharging module (9) are sequentially arranged above the storage battery pack (2); the central monitoring device (6) is respectively connected with the storage battery online monitoring module (3), the remote control module (4), the switching value acquisition module (5), the charging monitoring module (7), the insulation detection module (8) and the intelligent discharging module (9); the central monitoring device (6) is also connected with a display (10). The invention has the characteristics of comprehensive and accurate information acquisition.
Description
Technical Field
The invention relates to a battery pack monitoring system, in particular to an on-line monitoring system of a direct current system.
Background
In communication, electric power, microwave and other systems, the storage battery pack is an important energy storage device and is used for ensuring uninterrupted power supply of communication equipment and power equipment, and whether the storage battery pack is normal or not is directly related to whether the whole direct-current power supply system can run reliably or not. If the battery pack is not properly managed, such phenomena as overcharge, overdischarge, and battery aging may cause damage to the battery or a rapid decrease in battery capacity (since the battery pack is generally composed of cells connected in series, even if only one cell deteriorates, the performance of the entire battery pack may be seriously affected), thereby affecting the normal power supply of the device. The battery pack is timely and reliably subjected to itinerant detection, so that the maintenance of the normal operation of communication system equipment is very important. However, the existing dc system monitoring device only has basic data and signal acquisition functions, cannot acquire data such as internal resistance of a storage battery, characteristic parameters of a charging device, and ac components, has high defect rate and poor overall application, and is prone to faults such as separation of the storage battery from a bus, open circuit of the storage battery, excessive ripple of the charging device, insulation grounding, ac channeling, grounding of the storage battery, and dc channeling in an intelligent substation construction background and an unattended operation mode of the substation, and has a risk of monitoring loss. Therefore, the prior art has the problems of incomplete and inaccurate information acquisition.
Disclosure of Invention
The invention aims to provide an on-line monitoring system of a direct current system. The invention has the characteristics of comprehensive and accurate information acquisition.
The technical scheme of the invention is as follows: a direct current system on-line monitoring system comprises a shell, wherein a storage battery pack is arranged at the bottom in the shell, and a storage battery on-line monitoring module, a remote control module, a switching value acquisition module, a central monitoring device, a charging monitoring module, an insulation detection module and an intelligent discharging module are sequentially arranged above the storage battery pack; the central monitoring device is respectively connected with the storage battery online monitoring module, the remote control module, the switching value acquisition module, the charging monitoring module, the insulation detection module and the intelligent discharging module; the central monitoring device is also connected with a display.
In the above on-line monitoring system for the dc system, the central monitoring device is an integrated monitoring device.
In the above on-line monitoring system for the direct current system, the storage battery on-line monitoring module is used for collecting voltage and current temperature and testing internal resistance of the storage battery.
In the above dc system on-line monitoring system, the remote control module is respectively connected to the electric operating switch, the switch interlock, and the hard contact output terminal.
In the above online monitoring system for the dc system, the switching value acquisition module is used for acquiring a switch position state and a switch trip state.
In the above on-line monitoring system for the dc system, the charging monitoring module is used for collecting ripple voltage.
In the above direct current system online monitoring system, the central monitoring device is further connected to a background monitoring center.
In the direct current system online monitoring system, a bottom air exchanging opening is formed in the bottom of the shell, side air exchanging openings are formed in the bottom ends of two side walls of the shell, and side fans are arranged outside the side air exchanging openings; the shell is internally provided with an insulating and heat-insulating plate between the storage battery pack and the storage battery on-line monitoring module, a heat exchange cover surrounding the storage battery pack is arranged below the insulating and heat-insulating plate, the top of the heat exchange cover is provided with an air port, and the bottom of the air port is provided with a top fan.
In the direct current system online monitoring system, tapered air adjusting pieces are arranged on two sides in the heat exchange cover and distributed up and down, and the tapered air adjusting pieces are of a structure with a large top and a small bottom; the upper end of the conical air adjusting piece is provided with a heating wire; a temperature sensor is further arranged in the shell.
In the above-mentioned on-line monitoring system for the direct current system, the insulation board comprises a vacuum insulation board body, the upper surface of the vacuum insulation board body is sequentially provided with an aerogel felt layer and an insulation reflecting layer, and the lower surface of the vacuum insulation board body is provided with a nano-based insulation soft felt layer.
Compared with the prior art, the intelligent monitoring system has the advantages that the storage battery pack, the storage battery online monitoring module, the remote control module, the switching value acquisition module, the central monitoring device, the charging monitoring module, the insulation detection module and the intelligent discharge module are combined to build an integrated monitoring platform, and the intelligent monitoring system has the core component key parameter online monitoring functions of monitoring storage battery state data such as voltage, current, monomer voltage, monomer internal resistance, environment temperature and the like of the storage battery pack on line in real time, current stabilization precision, voltage stabilization precision, ripple factor, abnormal switch position alarm and the like, improves the comprehensive data control capability, improves the information acquisition quantity and acquisition precision, enables operation and maintenance personnel to master the running state of a direct-current power supply system more comprehensively and accurately, prevents information omission, eliminates detection blind spots and prevents accidents. In conclusion, the invention has the characteristics of comprehensive and accurate information acquisition.
In addition, the insulation heat insulation plate positioned between the storage battery and the storage battery on-line monitoring module is arranged at the bottom of the shell, so that the storage battery pack is separated from corresponding monitoring equipment to form two independent spaces, and the influence of heat generated by the storage battery pack on monitoring instrument equipment is reduced; meanwhile, the heat exchange cover surrounding the storage battery is arranged below the insulating and heat insulating plate, so that the temperature of the storage battery can be effectively adjusted, and the storage battery can be in a more appropriate working environment. In addition, the conical air adjusting pieces are arranged on the two sides of the heat exchange cover and distributed up and down, and the heating wires are arranged at the upper ends of the conical air adjusting pieces, so that the heating time of air can be effectively prolonged, and the heating efficiency is improved.
Drawings
FIG. 1 is a control flow diagram of the present invention;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a structural view of the insulating board.
The labels in the figures are: 1-shell, 2-storage battery pack, 3-storage battery online monitoring module, 4-remote control module, 5-switching value acquisition module, 6-central monitoring device, 7-charging monitoring module, 8-insulation detection module, 9-intelligent discharge module, 10-display, 11-background monitoring center, 13-heat exchange cover, 14-air port, 15-top fan, 16-conical air adjusting piece, 17-heating wire, 18-temperature sensor, 101-bottom air exchange port, 102-side air exchange port, 103-side fan, 12-insulation heat insulation board, 121-vacuum heat insulation board body, 122-aerogel felt layer, 123-heat insulation reflection layer and 124-nano heat insulation soft felt layer.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. An on-line monitoring system of a direct current system is formed as shown in figures 1 to 1 and comprises a shell 1, wherein a storage battery pack 2 is arranged at the bottom in the shell 1, and a storage battery on-line monitoring module 3, a remote control module 4, a switching value acquisition module 5, a central monitoring device 6, a charging monitoring module 7, an insulation detection module 8 and an intelligent discharging module 9 are sequentially arranged above the storage battery pack 2; the central monitoring device 6 is respectively connected with the storage battery online monitoring module 3, the remote control module 4, the switching value acquisition module 5, the charging monitoring module 7, the insulation detection module 8 and the intelligent discharging module 9; the central monitoring device 6 is also connected with a display 10.
The central monitoring device 6 is an integrated monitoring device.
The storage battery online monitoring module 3 is used for collecting voltage and current temperature and testing internal resistance of the storage battery.
And the remote control module 4 is respectively connected with the electric operating switch, the switch interlock and the hard contact output end.
And the switching value acquisition module 5 is used for acquiring the switch position state and the switch tripping state.
The charging monitoring module 7 is used for collecting ripple voltage.
The central monitoring device 6 is also connected with a background monitoring center 11.
The bottom of the shell 1 is provided with a bottom air exchange port 101, the bottom ends of two side walls of the shell 1 are provided with side air exchange ports 102, and the outer sides of the side air exchange ports 102 are provided with side fans 103; an insulating and heat-insulating plate 12 positioned between the storage battery pack 2 and the storage battery online monitoring module 3 is arranged in the shell 1, a heat exchange cover 13 surrounding the storage battery pack 2 is arranged below the insulating and heat-insulating plate 12, an air opening 14 is formed in the top of the heat exchange cover 13, and a top fan 15 is arranged at the bottom of the air opening 14.
Conical air adjusting pieces 16 distributed up and down are arranged on two sides in the heat exchange cover 13, and the conical air adjusting pieces 16 are of a structure with a large top and a small bottom; the upper end of the conical air adjusting piece 16 is provided with a heating wire 17; a temperature sensor 18 is also provided in the housing 1.
The insulated panel 12 includes a vacuum insulated panel body 121, an aerogel felt layer 122 and an insulated reflective layer 123 are sequentially disposed on the upper surface of the vacuum insulated panel body 121, and a nano-based insulated soft felt layer 124 is disposed on the lower surface of the vacuum insulated panel body 121.
The integrated monitoring device is a main monitoring unit of the direct-current power supply equipment of the transformer substation, is divided into an industrial personal computer and an embedded type, respectively operates a Linux operating system and an embedded type Linux operating system, is used as an operating platform of a program module, is matched with a touch screen type human-computer interaction interface, and is provided with four RJ45 interfaces and ten RS485 interfaces.
The main functions include: a) and classifying and summarizing the information transmitted at the lower layer, realizing the operation monitoring and the storage battery performance analysis of the direct-current power supply system, and generating corresponding alarms for data abnormality and state abnormality. b) And making a comprehensive strategy of the working mode, the starting time and the duration of the nuclear capacity discharge of the storage battery pack. c) And formulating a comprehensive strategy of the test period and the test time of the internal resistance test. d) And displaying pictures, reports and characters of real-time information, historical information, prompt information and a fixed value list of the new direct-current power supply system. e) And setting and lowering various operation parameters and alarm parameters to complete the lowering of the function instruction. f) And receiving and executing a remote control instruction to realize remote control of the remote core receiving capacitor and the circuit breaker of the storage battery.
The storage battery online monitoring module collects the voltage and the current value of the storage battery pack and the voltage, the temperature and the environmental temperature value of the storage battery monomer in real time and uploads the collected data to the integrated monitoring device in real time.
The remote control module receives a switching-on and switching-off command sent by the integrated monitoring device, closes the corresponding remote control relay contact, drives the switching-on and switching-off operation mechanism of the intelligent switch to act, achieves switching-on and switching-off operation of the intelligent switch, has a switch interlocking function, and prevents misoperation. Meanwhile, the alarm signal is received, the corresponding alarm relay contact is closed, and the hard contact alarm signal is sent out.
The intelligent discharging module receives the discharging parameters set by the integrated monitoring device and receives a starting discharging instruction, so that constant current discharging of the storage battery is realized.
The switching value acquisition module accesses a composite auxiliary contact and a tripping contact of the feeder switch into the switching value acquisition module, the switching value monitoring module collects and uploads switching value information to the integrated monitoring device, the integrated monitoring device carries out configuration definition on the switching value information, and the on-off and tripping states of all the feeder switches are monitored.
And the charging device monitoring module monitors the output ripple power supply of the charging device in real time, calculates the ripple coefficient, uploads the ripple coefficient to the integrated monitoring device, monitors the input and output voltage and current values of the charging device in real time on line, and realizes the functions of uniform floating charge conversion and storage battery charging.
The insulation monitoring module detects the voltage values of the positive bus and the negative bus to the ground through switching control of the built-in bridge, calculates the resistance value of the positive bus and the negative bus to the ground, and uploads the resistance value to the integrated monitoring device. When alternating current channeling, direct current mutual series fault and storage battery grounding occur to the bus and the branch, information is uploaded to the integrated monitoring device. The insulation monitoring module intelligently switches the compensation bridge, so that the earth pressure difference of the positive bus and the negative bus is smaller than a no-moving range.
The storage battery pack is connected with the detection units and the modules through the back of the shell and connected through connecting wires.
Surrounding means surrounding up and down, i.e. above and on both sides of the battery pack.
The temperature sensor is connected with a central monitoring device which is connected with the top fan and the side fan. The temperature sensor uploads the temperature data to the central monitoring device in real time.
When the temperature was too high, central monitoring device control top fan and side fan rotated, and the bottom of following the casing bottom trades the wind mouth and gets into the cooling air, from up down, carries out the heat exchange to the group battery, and hot-blast wind gap from heat transfer cover top gets into to follow thereupon under the drive of side fan, toward the side of both sides trade the wind mouth and flow out, accomplish the heat exchange (cooling) to the group battery.
When the temperature is low excessively, central monitoring device control top fan and side fan reversal to control annular heater strip circular telegram, make wind change the wind mouth from two sides and get into the heat transfer cover, after the heating of annular heater strip, hot-blast wind port from the top gets into in the casing, heats storage battery, accomplishes the heating back, and cold wind flows from the bottom of bottom and trades the wind mouth.
Claims (10)
1. The utility model provides a direct current system on-line monitoring system which characterized in that: the intelligent charging system comprises a shell (1), wherein a storage battery pack (2) is arranged at the bottom in the shell (1), and a storage battery online monitoring module (3), a remote control module (4), a switching value acquisition module (5), a central monitoring device (6), a charging monitoring module (7), an insulation detection module (8) and an intelligent discharging module (9) are sequentially arranged above the storage battery pack (2); the central monitoring device (6) is respectively connected with the storage battery online monitoring module (3), the remote control module (4), the switching value acquisition module (5), the charging monitoring module (7), the insulation detection module (8) and the intelligent discharging module (9); the central monitoring device (6) is also connected with a display (10).
2. The on-line monitoring system of the direct current system according to claim 1, wherein: the central monitoring device (6) is an integrated monitoring device.
3. The on-line monitoring system of the direct current system according to claim 1, wherein: the storage battery online monitoring module (3) is used for collecting voltage and current temperature and testing internal resistance of the storage battery.
4. The on-line monitoring system of the direct current system according to claim 1, wherein: and the remote control module (4) is respectively connected with the electric operating switch, the switch interlock and the hard contact output end.
5. The on-line monitoring system of the direct current system according to claim 1, wherein: and the switching value acquisition module (5) is used for acquiring the switch position state and the switch tripping state.
6. The on-line monitoring system of the direct current system according to claim 1, wherein: the charging monitoring module (7) is used for collecting ripple voltage.
7. The on-line monitoring system of the direct current system according to claim 1, wherein: the central monitoring device (6) is also connected with a background monitoring center (11).
8. The on-line monitoring system of the direct current system according to claim 1, wherein: a bottom air exchange opening (101) is formed in the bottom of the shell (1), side air exchange openings (102) are formed in the bottom ends of two side walls of the shell (1), and side fans (103) are arranged on the outer sides of the side air exchange openings (102); an insulating and heat-insulating plate (12) positioned between the storage battery pack (2) and the storage battery online monitoring module (3) is arranged in the shell (1), a heat exchange cover (13) surrounding the storage battery pack (2) is arranged below the insulating and heat-insulating plate (12), an air opening (14) is formed in the top of the heat exchange cover (13), and a top fan (15) is arranged at the bottom of the air opening (14).
9. The on-line monitoring system of the direct current system according to claim 8, wherein: conical air adjusting pieces (16) distributed up and down are arranged on two sides in the heat exchange cover (13), and the conical air adjusting pieces (16) are of a structure with a large top and a small bottom; the upper end of the conical air adjusting piece (16) is provided with a heating wire (17); a temperature sensor (18) is further arranged in the shell (1).
10. The on-line monitoring system of the direct current system according to claim 8, wherein: the insulation board (12) comprises a vacuum insulation board body (121), an aerogel felt layer (122) and an insulation reflecting layer (123) are sequentially arranged on the upper surface of the vacuum insulation board body (121), and a nano-base insulation soft felt layer (124) is arranged on the lower surface of the vacuum insulation board body (121).
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| CN202110265865.0A CN113049967A (en) | 2021-03-11 | 2021-03-11 | Direct current system on-line monitoring system |
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| CN202110265865.0A CN113049967A (en) | 2021-03-11 | 2021-03-11 | Direct current system on-line monitoring system |
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Application publication date: 20210629 |
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