CN112968487B - Direct-current power supply system lead-acid storage battery pack discharge test system and method - Google Patents
Direct-current power supply system lead-acid storage battery pack discharge test system and method Download PDFInfo
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- CN112968487B CN112968487B CN202110187840.3A CN202110187840A CN112968487B CN 112968487 B CN112968487 B CN 112968487B CN 202110187840 A CN202110187840 A CN 202110187840A CN 112968487 B CN112968487 B CN 112968487B
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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
- 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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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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]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
- G01R31/379—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator for lead-acid batteries
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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
-
- 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]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
- H02J7/007186—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage obtained with the battery disconnected from the charge or discharge circuit
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A discharge test system for a lead-acid storage battery pack of a direct-current power supply system comprises a #1 lead-acid storage battery pack and a #2 lead-acid storage battery pack. The first direct current load bus and the first charge and discharge bus are connected with a first rectifying and charging device through a first selector switch; the first charge-discharge bus is connected with a #1 lead-acid storage battery pack; and the #1 lead-acid storage battery pack is connected with the first storage battery polling instrument. And a first current divider and a first voltage collector are arranged on a connecting circuit of the first charge-discharge bus and the #1 lead-acid storage battery pack. The first charge-discharge bus and the second charge-discharge bus are connected with the three-phase inversion discharging device through the discharge selection switch. The connection relation of the #2 lead-acid storage battery pack is similar to that of the #1 lead-acid storage battery pack. The storage battery patrol instrument, the shunt meter and the rail hanging type patrol instrument are all connected with a remote monitoring platform. The invention realizes the remote state detection and the real-time discharge control of the storage battery pack by the remote automatic inversion discharge of the lead-acid storage battery of the direct-current power supply system. The system has the advantages of unattended operation, energy conservation and environmental protection.
Description
Technical Field
The invention belongs to the technical field of lead-acid storage battery pack maintenance, and particularly relates to a discharge test system and method for a lead-acid storage battery pack of a direct-current power supply system.
Background
The lead-acid storage battery is widely applied to industries such as electric power, communication, finance and the like, the operation and maintenance of the lead-acid storage battery in the prior art consume a large amount of manpower and material resources, and the operation and maintenance technical rules of the storage battery direct-current power supply device for the DL/T724 power system are specified as follows: firstly, a newly installed or largely overhauled valve-controlled storage battery pack is subjected to a full-capacity check discharge test for 10 hours, and then at least one check test is carried out every 2 years; secondly, the valve-controlled storage battery pack which runs for 4 years later is subjected to a capacity check discharge test every year. The discharge time is generally 10 hours, and a resistance type discharge mode is adopted, namely, in the discharge process of 10 hours, maintenance personnel constantly guard around the storage battery pack, monitor the discharge current of the storage battery pack, the temperature of the storage battery pack and the end voltage of a single battery of the storage battery pack, and record the voltage of the single battery in the discharge process of the storage battery pack and the like. In the discharge test, the energy of the storage battery is converted into heat energy from electric energy through the discharge resistor, and is directly wasted. Especially, if the work is carried out in summer, the working environment is higher in temperature and hotter, and the requirement of environmental protection is not met.
Disclosure of Invention
In order to solve the technical problems, the invention provides a discharge test system and a method for a lead-acid storage battery pack of a direct-current power supply system, which realize remote state detection and discharge real-time control of the storage battery pack by remotely and automatically inverting and discharging a lead-acid storage battery of the direct-current power supply system; the discharge of the lead-acid storage battery is output to a power grid through inversion, and green conversion of electric energy is achieved. Has the advantages of unattended operation, energy saving and environmental protection.
The technical scheme adopted by the invention is as follows:
a discharge test system for a lead-acid storage battery pack of a direct-current power supply system comprises:
a #1 lead-acid storage battery pack and a #2 lead-acid storage battery pack;
the first direct current load bus and the first charge and discharge bus are connected with a first rectifying and charging device through a first selector switch; the first charge-discharge bus is connected with a #1 lead-acid storage battery pack; the #1 lead-acid storage battery pack is connected with a first storage battery polling instrument, and the first storage battery polling instrument is used for measuring the voltage and the internal resistance of a single battery of the #1 lead-acid storage battery pack in real time;
a first current divider and a first voltage collector are arranged on a connecting line of the first charging and discharging bus and the #1 lead-acid storage battery pack, the first current divider is used for measuring charging and discharging current of the #1 lead-acid storage battery pack in real time, and the first voltage collector is used for measuring terminal voltage of the #1 lead-acid storage battery pack in real time;
the second direct current load bus and the second charge and discharge bus are connected with a second rectifying and charging device through a second selector switch; the second charge and discharge bus is connected with a #2 lead-acid storage battery pack; the #2 lead-acid storage battery pack is connected with a second storage battery polling instrument, and the second storage battery polling instrument is used for measuring the voltage and the internal resistance of a single battery of the #2 lead-acid storage battery pack in real time;
a second shunt meter and a second voltage collector are arranged on a connecting circuit of the second charge-discharge bus and the #2 lead-acid storage battery pack, the second shunt meter is used for measuring charge-discharge current of the #2 lead-acid storage battery pack in real time, and the second voltage collector is used for measuring the terminal voltage of the storage battery pack of the #2 lead-acid storage battery pack in real time;
the first charge-discharge bus and the second charge-discharge bus are connected with a three-phase inversion discharge device through a discharge selection switch;
the system also comprises a rail-mounted inspection instrument, wherein the rail-mounted inspection instrument is used for inspecting and monitoring the temperatures of the #1 lead-acid storage battery pack, the #2 lead-acid storage battery pack body and the pole in real time; abnormal states of appearance deformation, liquid leakage, cracking and cable aging and electric leakage of the storage battery.
The first and second storage battery polling instruments, the first and second shunt meters and the rail-hanging polling instrument are connected with a remote monitoring platform.
The first and second selector switches and the discharge selector switch are all provided with electric operating mechanisms.
A direct current power system lead-acid battery discharge test method, while carrying on the discharge test, control the discharge selector switch through the remote monitoring platform, cut the lead-acid battery from floating the charging state to the discharging state, the open circuit voltage of the lead-acid battery of automatic record of the remote monitoring platform system at this moment, choose the nominal capacity of the lead-acid battery, and set up parameters such as discharge time, discharge current, end voltage of the lead-acid battery;
after the parameters are set, the three-phase inversion discharging device collects normal synchronous signals and operates normally, three-phase inversion discharging is started, and in the discharging process, the remote monitoring platform senses the discharging state of the lead-acid storage battery pack in real time and records related data at regular intervals;
after the discharging time is over, controlling a discharging selection switch through the remote monitoring platform, and automatically finishing the discharging of the lead-acid storage battery pack; and if the voltage of a single storage battery is lower than the end voltage of the storage battery in the discharging process, immediately stopping discharging.
The invention relates to a discharge test system of a lead-acid storage battery pack of a direct-current power supply system, which has the following technical effects:
1) in the discharging process of the lead-acid storage battery pack, the running state of the lead-acid storage battery pack can be remotely sensed in real time and can be remotely controlled in real time; the discharge of the storage battery is output to a power grid through inversion, and green conversion of energy is realized.
2) The lead-acid storage battery of the direct-current power supply realizes remote automatic inversion discharge, realizes state perception of the remote storage battery pack, and has the advantages of unattended operation, energy conservation and environmental protection.
Drawings
FIG. 1 is a schematic diagram of a discharge testing system according to the present invention.
FIG. 2 is a functional schematic diagram of the discharge testing system of the present invention.
Fig. 3 is a discharge flow chart of the #2 battery pack of the discharge test system of the present invention.
Fig. 4 is a schematic structural view of a rail-mounted inspection tester of the discharge test system of the invention.
Detailed Description
As shown in fig. 1, a discharge test system for a lead-acid battery pack of a dc power supply system includes:
a #1 lead-acid battery pack 1 and a #2 lead-acid battery pack 2;
the first direct current load bus 6 and the first charge and discharge bus 10 are connected with a first rectifying and charging device 16 through a first selector switch 12; the first charge and discharge bus 10 is connected with a #1 lead-acid storage battery pack 1; the #1 lead-acid storage battery pack 1 is connected with a first storage battery polling instrument 3, and the first storage battery polling instrument 3 is used for measuring the voltage and the internal resistance of a single battery of the #1 lead-acid storage battery pack 1 in real time;
a first current divider 18 and a first voltage collector 19 are arranged on a connecting circuit of the first charge-discharge bus 10 and the #1 lead-acid storage battery pack 1, wherein the first current divider 18 is used for measuring charge-discharge current of the #1 lead-acid storage battery pack 1 in real time, and the first voltage collector 19 is used for measuring the storage battery pack terminal voltage of the #1 lead-acid storage battery pack 1 in real time;
the second direct current load bus 7 and the second charge and discharge bus 11 are connected with a second rectifying and charging device 17 through a second selector switch 13; the second charge and discharge bus 11 is connected with a #2 lead-acid storage battery pack 2; the #2 lead-acid storage battery pack 2 is connected with a second storage battery polling instrument 4, and the second storage battery polling instrument 4 is used for measuring the voltage and the internal resistance of a single battery of the #2 lead-acid storage battery pack 2 in real time;
a second shunt 18 'and a second voltage collector 19' are arranged on a connecting line of the second charge-discharge bus 11 and the #2 lead-acid storage battery pack 2, the second shunt 18 'is used for measuring charge-discharge current of the #2 lead-acid storage battery pack 2 in real time, and the second voltage collector 19' is used for measuring the storage battery pack terminal voltage of the #2 lead-acid storage battery pack 2 in real time;
the first charge-discharge bus 10 and the second charge-discharge bus 11 are connected with a three-phase inversion discharge device 15 through a discharge selection switch 14;
the system also comprises a rail-mounted inspection instrument 5, wherein the rail-mounted inspection instrument 5 is used for inspecting and monitoring the temperatures of the bodies and the poles of the #1 lead-acid storage battery pack 1 and the #2 lead-acid storage battery pack 2 in real time; abnormal states of appearance deformation, liquid leakage, cracking and cable aging and electric leakage of the storage battery.
The first and second storage battery patrol instrument, the first and second shunt meters and the hanging rail type patrol instrument 5 are connected with a remote monitoring platform.
The first direct current load bus 6 is respectively connected with the second direct current load bus 7 and the #1 lead-acid storage battery pack 1 through a first interconnection switch 8;
the second direct current load bus 7 is respectively connected with the first direct current load bus 6 and the #2 lead-acid storage battery pack 2 through a second interconnection switch 9.
The switches used in the DC power supply system are all provided with electric operating mechanisms.
The #1 lead-acid storage battery pack 1 and the #2 lead-acid storage battery pack 2 are model OPZV2V-800Ah valve-regulated lead-acid storage battery packs.
The first storage battery polling instrument 3 and the second storage battery polling instrument 4 are FXJ-22 battery internal resistance polling modules.
The first rectifying charging device 16 and the second rectifying charging device 17 are high-frequency switching rectifying modules of the allowing ZZG 23A-40220.
The first and second flow dividers 18 and 18' are FL-2500A/75mV flow dividers.
The first voltage collector 19 and the second voltage collector 19' are FZB-230-500V voltage collectors.
As shown in fig. 4, the rail-mounted polling device 5 is a rail-mounted wheeled robot, and includes a power supply and driving part 5.1, a status indicator lamp 5.2, a radar sensor 5.3, an ultraviolet imager 5.4, an infrared imager 5.5, a visible light camera 5.6, a fill light lamp 5.7, a sliding rail roller 5.8, and a controller 5.9. Wherein, the problems of cracking, deformation, liquid leakage, foreign matters and the like of the storage battery pack are found in time through the visible light camera 5.6; the problems of heating, poor contact, abnormal temperature of the storage battery body, fire hazard in the surrounding environment and the like of the storage battery pole and a connecting cable between the storage battery packs are found in time through an infrared imager 5.5; the ultraviolet imager 5.4 can find out the abnormal problems of partial discharge, aging and the like of the storage battery pack and the charging and discharging cable in time.
The three-phase inversion discharging device 15 adopts an IGBT three-phase bridge inverter.
The electric operating mechanism is a circuit breaker and has a remote electric on-off operation function.
The remote monitoring platform is used for remotely monitoring the whole direct-current power supply system, specifically monitoring the storage battery pack, the direct-current charging device, the running state information of the bus and the like, and remotely performing bus switching, storage battery pack charging and discharging operation, switching-on and switching-off operation of a feeder circuit breaker and the like. The monitoring platform is sent to a background server through a communication protocol and switching value information, and the server adopts an HPE DL 388380 Linix operating system.
As shown in fig. 2, the voltage and the internal resistance of a single battery of the lead-acid storage battery are measured in real time by a first storage battery polling instrument 3 and a second storage battery polling instrument 4; the discharge current and the terminal voltage of the storage battery pack are measured in real time through a first current divider 18, a second current divider 18 ', a first voltage collector 19 and a second voltage collector 19'; through hanging rail formula inspection appearance 5, patrol and monitor storage battery body and utmost point post temperature in real time, the battery outward appearance is out of shape, weeping, fracture, cable ageing electric leakage etc. abnormal state is kept watch on, then sends storage battery's relevant state data to remote monitoring platform through IEC61850, 4~20mA, RTSP protocol etc. to possess the relevant state information of automatic recording.
When a discharge test is carried out, the discharge selection switch 14 is controlled by the remote monitoring platform, the lead-acid storage battery pack is switched from a floating charge state to a discharge state, at the moment, the remote monitoring platform system automatically records the open-circuit voltage of the lead-acid storage battery pack, selects the nominal capacity of the lead-acid storage battery pack, and sets parameters such as discharge time, discharge current and termination voltage of the lead-acid storage battery pack. After the parameters are set, the three-phase inversion discharging device 15 collects normal synchronous signals and starts three-phase inversion discharging when the running state is normal, and in the discharging process, the remote monitoring platform senses the discharging state of the lead-acid storage battery pack in real time and records related data at regular intervals of 10 minutes. After the discharging time is over, the discharging selection switch 14 is controlled by the remote monitoring platform, and the discharging of the lead-acid storage battery pack is automatically finished; and if the voltage of a single storage battery is lower than the end voltage of the storage battery in the discharging process, immediately stopping discharging.
Taking green check discharge of a #2 lead-acid storage battery pack 2 of a direct-current power supply system as an example, firstly, making technical measures and parameter setting before the #2 lead-acid storage battery pack 2 discharges, then starting a three-phase inversion discharge device 15, if the state of the #2 lead-acid storage battery pack is sensed normally in the discharge process, and stopping green discharge when the discharge time is up; and starting the charging process of the #2 lead-acid storage battery pack, if the state sensing of the #2 lead-acid storage battery pack is abnormal in the discharging process, stopping green discharging of the #2 lead-acid storage battery pack, and allowing the operation and maintenance technicians to rush to the site to process the abnormality. The detailed process flow is shown in the remote green discharging process flow of the #2 lead-acid storage battery pack shown in fig. 3.
Claims (3)
1. A direct current power supply system lead-acid storage battery discharge test system is characterized by comprising:
a #1 lead-acid storage battery pack (1) and a #2 lead-acid storage battery pack (2);
the first direct current load bus (6) and the first charge and discharge bus (10) are connected with a first rectifying and charging device (16) through a first selector switch (12); the first charge and discharge bus (10) is connected with a #1 lead-acid storage battery pack (1); the #1 lead-acid storage battery pack (1) is connected with a first storage battery patrol instrument (3), and the first storage battery patrol instrument (3) is used for measuring the voltage and the internal resistance of a single battery of the #1 lead-acid storage battery pack (1) in real time;
a first current divider (18) and a first voltage collector (19) are arranged on a connecting circuit of the first charge-discharge bus (10) and the #1 lead-acid storage battery pack (1), the first current divider (18) is used for measuring charge-discharge current of the #1 lead-acid storage battery pack (1) in real time, and the first voltage collector (19) is used for measuring the storage battery pack terminal voltage of the #1 lead-acid storage battery pack (1) in real time;
the second direct current load bus (7) and the second charge and discharge bus (11) are connected with a second rectifying and charging device (17) through a second selector switch (13); the second charge and discharge bus (11) is connected with a #2 lead-acid storage battery pack (2); the #2 lead-acid storage battery pack (2) is connected with a second storage battery polling instrument (4), and the second storage battery polling instrument (4) is used for measuring the voltage and the internal resistance of a single battery of the #2 lead-acid storage battery pack (2) in real time;
a second shunt meter (18 ') and a second voltage collector (19') are arranged on a connecting circuit of the second charge-discharge bus (11) and the #2 lead-acid storage battery pack (2), the second shunt meter (18 ') is used for measuring charge-discharge current of the #2 lead-acid storage battery pack (2) in real time, and the second voltage collector (19') is used for measuring the storage battery pack terminal voltage of the #2 lead-acid storage battery pack (2) in real time;
the first charge-discharge bus (10) and the second charge-discharge bus (11) are connected with a three-phase inversion discharge device (15) through a discharge selection switch (14);
when a discharge test is carried out, a discharge selection switch (14) is controlled by a remote monitoring platform, the lead-acid storage battery pack is switched from a floating charge state to a discharge state, at the moment, the remote monitoring platform system automatically records the open-circuit voltage of the lead-acid storage battery pack, selects the nominal capacity of the lead-acid storage battery pack, and sets the discharge time, the discharge current and the termination voltage parameters of the lead-acid storage battery pack;
after the parameters are set, the three-phase inversion discharging device (15) collects normal synchronous signals and starts three-phase inversion discharging when the running state is normal, and in the discharging process, the remote monitoring platform senses the discharging state of the lead-acid storage battery pack in real time and records related data at regular intervals;
after the discharging time is over, the discharging selection switch (14) is controlled by the remote monitoring platform, and the discharging of the lead-acid storage battery pack is automatically finished; and if the voltage of a single storage battery is lower than the end voltage of the storage battery in the discharging process, immediately stopping discharging.
2. The discharge test system for the lead-acid storage battery pack of the direct-current power supply system according to claim 1, characterized in that: the system also comprises a rail-mounted inspection instrument (5), wherein the rail-mounted inspection instrument (5) is used for inspecting and monitoring the body and the pole temperature of the #1 lead-acid storage battery pack (1) and the #2 lead-acid storage battery pack (2) in real time; abnormal states of appearance deformation, liquid leakage, cracking and cable aging and electric leakage of the storage battery;
the first and second storage battery patrol instrument, the first and second shunt meters and the hanging rail type patrol instrument (5) are connected with a remote monitoring platform.
3. The discharge test system for the lead-acid storage battery pack of the direct-current power supply system according to claim 1, characterized in that: the first and second selector switches and the discharge selector switch (14) are all provided with electric operating mechanisms.
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| CN113489093A (en) * | 2021-06-29 | 2021-10-08 | 中国长江电力股份有限公司 | Storage battery automatic discharging device with optimized heat dissipation channel and using method |
| CN113504495A (en) * | 2021-07-07 | 2021-10-15 | 广西桂能科技发展有限公司 | Detection device and detection method of portable storage battery charge and discharge tester |
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| CN102279369B (en) * | 2011-07-21 | 2017-02-15 | 深圳市核达中远通电源技术有限公司 | Intelligent remote online storage battery detection method and system |
| WO2017012172A1 (en) * | 2015-07-21 | 2017-01-26 | 深圳市佰特瑞储能系统有限公司 | Lead-acid storage battery system, control system, and smart system |
| CN107196366B (en) * | 2017-06-07 | 2023-04-07 | 深圳奥特迅电力设备股份有限公司 | Storage battery online maintenance system based on three-port charging and discharging machine |
| CN207819550U (en) * | 2018-01-09 | 2018-09-04 | 广东电网有限责任公司电力调度控制中心 | A kind of portable feed-back type battery service control system |
| CN109164395A (en) * | 2018-08-22 | 2019-01-08 | 杭州邦利检测技术有限公司 | Power accumulator safety test method for electric vehicle |
| CN208953679U (en) * | 2018-09-26 | 2019-06-07 | 大唐水电科学技术研究院有限公司 | A kind of battery carries out the device of capacity checking discharging test automatically |
| CN209170014U (en) * | 2019-01-09 | 2019-07-26 | 中国长江电力股份有限公司 | A kind of having the three of discharging function and fill two storage DC power systems |
| CN111725867A (en) * | 2020-06-24 | 2020-09-29 | 国网湖北省电力有限公司孝感供电公司 | Remote automatic maintenance system and maintenance method for storage battery |
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2021
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