CN107219467B - Transformer substation storage battery nuclear capacity device with sulfur removal and repair functions and method - Google Patents
Transformer substation storage battery nuclear capacity device with sulfur removal and repair functions and method Download PDFInfo
- Publication number
- CN107219467B CN107219467B CN201710442557.4A CN201710442557A CN107219467B CN 107219467 B CN107219467 B CN 107219467B CN 201710442557 A CN201710442557 A CN 201710442557A CN 107219467 B CN107219467 B CN 107219467B
- Authority
- CN
- China
- Prior art keywords
- module
- storage battery
- sulfur removal
- discharge
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 81
- 239000011593 sulfur Substances 0.000 title claims abstract description 81
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 67
- 230000008439 repair process Effects 0.000 title description 13
- 239000000178 monomer Substances 0.000 claims abstract description 55
- 230000004913 activation Effects 0.000 claims abstract description 38
- 230000008569 process Effects 0.000 claims abstract description 30
- 238000007600 charging Methods 0.000 claims description 45
- 238000007599 discharging Methods 0.000 claims description 44
- 230000003993 interaction Effects 0.000 claims description 20
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 238000007689 inspection Methods 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000010280 constant potential charging Methods 0.000 claims description 4
- 230000003009 desulfurizing effect Effects 0.000 claims description 4
- 238000010278 pulse charging Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000010277 constant-current charging Methods 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000004073 vulcanization Methods 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 description 6
- 238000005987 sulfurization reaction Methods 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002169 hydrotherapy Methods 0.000 description 3
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention designs a transformer substation storage battery capacity device and method with a sulfur removal restoration function, which not only can realize automatic capacity of a storage battery, but also can realize an individual sulfur removal activation function by utilizing the charge and discharge process of a capacity test, so that a storage battery monomer is in an optimal state, the problem of vulcanization is solved, and the effective use capacity of the storage battery is ensured.
Description
Technical Field
The invention relates to the technical field of storage batteries, in particular to a transformer substation storage battery capacity checking device and method with a sulfur removal and restoration function.
Background
The storage battery pack is an important component of the direct current system of the transformer substation, and when the transformer substation is in voltage loss by the alternating current system, the secondary equipment of the whole substation such as relay protection, fault wave recording and the like is powered by the storage battery pack, so that the storage battery is the last defense line of the direct current system. At present, valve-regulated lead-acid storage batteries are commonly adopted in a transformer substation, the service life, capacity and operation performance of each battery monomer in a storage battery pack are important attention objects of the transformer substation, the valve-regulated lead-acid storage batteries are restriction short plates in transformer substation accident handling, and the following problems exist in long-term operation:
1. the parameters of each monomer cannot be guaranteed to be consistent when the storage battery monomer leaves a factory, so that the monomer difference determines that the storage battery monomer has the problems of unbalanced charge and discharge, partial monomer undercharge, partial monomer long-time overdischarge and the like in the serial operation process, a hard lead sulfate coarse grain with poor conductivity is generated on a storage battery polar plate, the internal resistance of the storage battery is increased, the capacity is reduced, and the phenomenon is that the storage battery is vulcanized.
2. The storage battery for the substation or the storage battery for the communication is formed by connecting a plurality of storage battery monomers in series into groups, the direct-current charger based on a high-frequency switch is used for directly controlling the charge and discharge of the whole group of storage batteries, and the terminal voltage, the temperature and other parameters of each group of storage batteries are measured and monitored through the on-line storage battery state monitor, however, the repairing function of the storage battery sulfuration is lacked, and the storage battery sulfuration problem cannot be solved effectively all the time.
3. As an important direct current system device, the storage battery pack is used, all battery cells are in a floating charge state for a long time, and only a nuclear capacity test is carried out on the storage battery according to management regulations, the nuclear capacity test is often focused on testing and checking the capacity of the storage battery pack, and the sulfur removal degree of the storage battery in the discharging and charging processes is limited.
4. The vulcanization phenomenon of the storage battery reduces the contact area between active substances and electrolyte on positive and negative polar plates of the storage battery, the crystal grains are continuously thickened for a long time, the capacity of the storage battery is greatly reduced, and the situation that the storage battery is scrapped in advance due to the vulcanization problem is increased in the current situation.
Disclosure of Invention
Under the existing charging and discharging operation mode of the whole group of storage batteries controlled by the power supply enterprises, the phenomenon that the storage batteries inevitably exist during floating charging (more than 99% of the working time of the storage batteries of the power supply enterprises are in a floating charging state): most of the monomers are in a floating state, one monomer is in an overcharged state, and one monomer is in an undercharged state. This phenomenon inevitably leads to a decrease in the battery capacity of the battery pack, a decrease in the service life of the battery, and even to failure of the core capacity test (when the actual capacity is less than 80% of the rated capacity, it is determined that the core capacity is failed, and the battery needs to be replaced at this time). In the case of battery cells, this tends to cause a vulcanization phenomenon.
The research of the sulfuration problem in the academic field is less, mainly because the sulfuration problem of the storage battery is difficult to mathematically and quantitatively describe, the resistance characteristics of the storage battery are different due to the problem of individual difference, the internal resistance also changes at any time in the chemical reaction process of charge and discharge, and the sulfuration degree is difficult to accurately determine by measuring the internal resistance of the storage battery.
On the other hand, the problem of vulcanization is a long-term operation and maintenance accumulation problem, and the uncertainty factor causes the current lack of an effective and targeted solution method related to the past use condition of the storage battery.
The sulfur removal method of the storage battery at the present stage mainly comprises the following steps: respectively, hydrotherapy, high-current charging method, chemical method and pulse method.
The water treatment is to dilute the electrolyte in the storage battery to improve the solubility of lead sulfate crystals in the electrolyte. The method is very effective for the storage battery with the water-adding type structure, however, most of transformer substations adopt valve-controlled maintenance-free lead-acid storage batteries, and the method is not feasible and is not beneficial to keeping the maintenance-free sealed safety characteristic of the storage battery.
The high-current charging method is to charge the accumulator in micro gassing state and wash the lead sulfate crystal on the surface of the polar plate with the separated gas, and the separated gas is easy to wash the active matters on the polar plate together, so that the method is suitable for slight sulfurization, and has high requirement for controlling the high-current charging.
The chemical method is similar to the hydrotherapy principle, and is different in that the original electrolyte is replaced, and the specific chemical solvent is adopted to specially dissolve the vulcanized crystal, so that the sulfur removal effect is obvious, however, the process is complex like the hydrotherapy method, and the method is not suitable for the type of storage battery adopted by the current transformer substation.
The pulse method is a sulfur removal method adopted by most devices in the market at present, and electric pulse generated by instantaneous high voltage is used for carrying out discharge breakdown on crystals, so that the crystals are electrolyzed and vulcanized. The method is simple to operate and obvious in effect, however, the pulse is generally a fixed pulse and is not correspondingly adjusted according to the vulcanization degree of the storage battery, and the control error also easily causes the gassing problem. In addition, the current market devices still perform pulse charging on the whole storage battery pack, and the individual vulcanization solving effect is still limited.
In addition, the nuclear capacity test is carried out on the whole storage battery pack, so that the problem of the difference in vulcanization of the storage batteries cannot be really solved due to the lack of pertinence on the sulfur removal function of the single storage batteries, and the overcharge or the undercharge of the single storage batteries still occurs in the charging process in the nuclear capacity process.
In order to solve the technical problems, the invention adopts the following technical scheme:
a substation storage battery nuclear capacity device with a sulfur removal repair function, comprising: the system comprises a sampling and inspection module, a controllable discharging module, a sulfur removal activation execution module, a control decision module, a state switching module and a man-machine interaction module;
the sampling and inspection module comprises: the voltage measuring instrument, the current measuring instrument and the temperature sensor are connected in series to the output end of the positive electrode of the battery, the voltage measuring instrument is connected with two ends of the battery in parallel, and the temperature sensor is arranged on the shell of the battery, so that the power supply state of the battery pack, the terminal voltage of each battery cell, the charging/discharging current of the battery and the temperature of the battery can be obtained in a traversing way;
the controllable discharging module adjusts the discharging resistance of each execution unit of the discharging module according to the output command of the control decision module, performs target controllable discharging on the storage battery unit of the storage battery pack, and feeds back the execution result to the control decision module; the controllable discharging module consists of a plurality of discharging execution monomers, and each discharging execution monomer is connected to a monomer with a corresponding number of the storage battery through a wiring and is output in a common path with the desulfurizing charging execution monomer of the desulfurizing activation execution module;
the sulfur removal activation execution module flexibly realizes two modes of uniform charge and pulse charge according to an output command of the control decision module, adjusts pulse amplitude and width in the pulse charge and discharge process, outputs a sulfur removal pulse to a target storage battery monomer of the storage battery pack, and feeds back an execution result to the control decision module; the sulfur removal activation execution module consists of a plurality of sulfur removal charging execution monomers, wherein each sulfur removal charging execution monomer is connected to a monomer with a corresponding number of the storage battery through a wiring and is output in a common path with the execution monomer of the controllable discharging module;
the state switching module comprises: the controllable direct current breaker is arranged at the overall wiring port of the storage battery pack, and is used for realizing state switching of the storage battery pack according to the command of the control decision module, and feeding back information to the control decision module after execution is finished;
the decision control module receives input feedback of the sampling and inspection module, the state switching module, the man-machine interaction module, the controllable charging and discharging module and the sulfur removal activation execution module, and outputs a responsive control command to the sampling and inspection module, the state switching module, the man-machine interaction module, the controllable charging and discharging module and the sulfur removal activation execution module through a decision algorithm;
the man-machine interaction module is used for realizing parameter setting and control starting of a user on the device function through the man-machine interaction module, receiving telemetry information output by the decision control module, displaying the state quantity of the storage battery and realizing an abnormal alarm function.
Preferably, the substation storage battery nuclear capacity device with the sulfur removal repair function further comprises: the device comprises a power supply module, a communication interface and a self-checking module.
Preferably, the man-machine interaction module further comprises: screen, sound, buttons, lights.
Compared with the prior art, the beneficial effects are that:
1. the differential sulfur removal restoration function is realized, and the problem of different vulcanization degrees of the storage battery is solved;
2. and calculating the capacity of the storage battery after sulfur removal, and effectively detecting the real energy storage capacity of the storage battery.
A battery capacity checking method, comprising the steps of:
s1, starting, and switching to a step S2;
s2, detecting the state of the storage battery, and turning to a step S3;
s3, checking whether the state of the storage battery pack is normal, switching to the step S4 in the normal state, and switching to the step S7 in the abnormal state;
s4, determining whether to enter a repairing capacity state, entering the repairing capacity state to enter a step S5, and not entering the repairing capacity state to enter a step S9;
s5, repairing the nuclear capacity to obtain a nuclear capacity result, and if the nuclear capacity is abnormal, switching to the step S7, and if the nuclear capacity is not abnormal, switching to the step S6;
s6, battery pack state switching control is carried out, and the step S9 is carried out;
s7, outputting an alarm, and turning to a step S8;
s8, overhauling treatment, and turning to a step S10;
s9, determining whether to exit the device, exiting to S10, and not exiting to return to S2;
s10, ending.
The repairing the nuclear capacity in the step S5, obtaining a nuclear capacity result comprises the following steps:
step 1: the whole storage battery is discharged to a termination condition 1 under constant current, and a target battery group T1 is formed according to the discharge termination voltage;
step 2: the whole storage battery is charged to a termination condition 2 under constant current, and a target battery group T2 is formed according to the voltage rising rate;
step 3: determining a vulcanization target battery cell combination T3, and executing self-circulation adjustment for the T3 to perform sulfur removal activation charging;
step 4: the whole group of storage batteries are charged to a termination condition 3 at constant voltage;
step 5: executing the step 1, and recording the discharge capacity 1;
step 6: executing the steps 2 and 4, executing the step 1, and recording the discharge capacity 2;
step 7: and (5) checking and analyzing whether the twice discharge capacity meets the minimum standard or not, and feeding back signals.
Further, the constant-current discharge of the storage battery pack in the step 1 adopts the following method: and carrying out whole-group constant-current discharge of the discharge rate on the target storage battery, recording the discharge time, stopping constant-current discharge when detecting that the single voltage drops to reach the preset termination voltage or the whole-group voltage drops to the whole preset termination voltage, recording the discharge time and the voltage value of each storage battery after the single battery is discharged, and simultaneously recording the discharge electric quantity Q1 of the whole-group storage battery.
Further, the constant-current discharge of the storage battery pack in the step 2 adopts the following method: and (3) carrying out constant-current charging on the target storage battery pack, wherein the voltage of each battery cell is increased, stopping constant-voltage charging when the voltage of the battery cell reaches, recording the charging duration, and counting the voltage change rate of any battery in the charging process as V.
Further, the following method is adopted for the sulfur removal activation charge that performs self-circulation adjustment for T3: outputting continuous positive pulse charging with k periods to the target battery cell, wherein the duty ratio is Tz, and the charging electric quantity is Q c Then outputting reverse voltage to the target monomer to discharge the monomer, wherein the discharge electric quantity is Q d Control the discharge time to make Q d Equal to the discharge quantity Q of the whole group of storage battery 1 The whole process is a one-time sulfur removal activation charging and discharging process; circularly executing the sulfur removal activation charge-discharge process, and recording the kth target monomer voltage as U ki Wherein i is T3, when U ki Less than U （k-1）i When the activity of sulfur removal is effective, according to U ki And U （k-1）i The phase difference value is adjusted to increase the forward pulse amplitude and reduce the pulse duty ratio until the voltage phase difference of two times before and after the cycle execution of the sulfur removal activation charge and discharge meets the minimum set requirement or reaches the set highest cycle times, and the sulfur removal activation charge process is stopped.
Compared with the prior art, the beneficial effects are that:
1. providing a target vulcanized monomer confirmation method, and effectively finding out a problem battery;
2. the intelligent control method for the sulfur removal restoration is provided and is integrated into the nuclear capacity process of the storage battery.
Drawings
Fig. 1 is a schematic diagram of the installation of the nuclear containment device of the present invention.
Fig. 2 is a flow chart of the operation of the nuclear containment device of the present invention.
Fig. 3 is a schematic diagram of the battery repair check procedure of the present invention.
Reference numerals illustrate:
1- #1 battery pack; 11- #1 DC; 12-a direct current breaker K1; 13- #1 temperature, voltage, sensor signal lines; 2- #2 battery pack; 21- #2 DC; 22-dc breaker K2; 23- #2 temperature, voltage, sensor signal lines; 3-discharge execution unit; 31-discharge control; 4-sulfur removal charging execution monomer; 41-sulfur removal charging control; 5-a decision control module; 6-a man-machine interaction module; 7-a charger.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
As shown in fig. 1, the invention designs a transformer substation storage battery capacity device and method with a sulfur removal restoration function, which not only can realize automatic capacity of a storage battery, but also can realize individual sulfur removal activation function by utilizing the charge and discharge process of a capacity test, so that a storage battery monomer is in an optimal state, the problem of vulcanization is solved, and the effective use capacity of the storage battery is ensured.
As shown in fig. 1, a transformer substation storage battery nuclear capacity device with a sulfur removal repair function includes: the system comprises a sampling and inspection module, a controllable discharging module, a sulfur removal activation execution module, a control decision module, a state switching module, a man-machine interaction module and other necessary device supply modules.
And a sampling and inspection module: the sampling and inspection module consists of a voltage measuring instrument, a current measuring instrument, a temperature sensor and corresponding circuits, wherein the current measuring instrument is connected in series with the output end of the positive electrode of the battery, the voltage measuring instrument is connected with the two ends of the battery in parallel, and the temperature sensor is arranged on the shell of the battery, so that the power supply state of the battery pack, the terminal voltage of each battery cell, the charging/discharging current of the battery, the temperature of the battery and the like can be obtained through traversal.
And a controllable discharge module: according to the output command of the control decision module, the discharge resistance of each execution monomer of the discharge module is adjusted, the storage battery monomers of the storage battery pack of the #1 or #2 group are subjected to target controllable discharge, and the execution result is fed back to the control decision module. The controllable discharging module consists of a plurality of discharging execution monomers 3, and each discharging execution monomer 3 is connected to a corresponding numbered monomer of the storage battery through a wiring and is output in a common path with the execution monomer of the sulfur removal activation execution module.
And a sulfur removal activation execution module: according to the output command of the control decision module, two modes of uniform charge and pulse charge are flexibly realized, the pulse amplitude and the pulse width are adjusted in the pulse charge and discharge process, the sulfur removal pulse is output to the target storage battery monomer of the storage battery pack of the #1 or #2 group, and the execution result is fed back to the control decision module. The power supply of the sulfur removal activation execution module is taken from an original charger 7 of the direct current system, the output of the sulfur removal activation execution module is composed of a plurality of sulfur removal charging execution monomers 4, each sulfur removal charging execution monomer 4 is connected to a corresponding numbered monomer of the storage battery through a wiring, and the sulfur removal charging execution monomers and the execution monomers of the controllable discharging module are output in a common way.
And a state switching module: the device mainly comprises controllable direct current breakers K1 and K2, is arranged at the overall wiring port of the storage battery, realizes state switching of the storage battery according to the command of the control decision module, breaks the direct current breaker corresponding to the storage battery when entering a nuclear capacity sulfur removal state, and needs to close the direct current breaker corresponding to the storage battery when restoring to enter an on-line operation and monitoring state after completing the nuclear capacity sulfur removal, and feeds back information to the control decision module after execution.
Decision control module: receiving input feedback of a sampling and inspection module, a state switching module, a man-machine interaction module, a controllable charging and discharging module and a sulfur removal activation execution module, outputting a responsive control command to other modules through a decision algorithm, and mainly realizing the following two functions:
1) And (5) online monitoring. The non-capacity period realizes the full-time on-line monitoring of the running condition of each single battery, and when the voltage of the single battery is too low or too high or the temperature is abnormal, the single battery sends out an instruction to control the man-machine interaction module to give an alarm and remind the corresponding superscalar value, so that the normal function of the current electric energy management of the storage battery is realized;
2) And (5) nuclear capacity repair. The state switching module is controlled to convert the storage battery into a nuclear capacity repair state by a manual or periodic starting mode, a sulfur removal repair target battery is determined according to a battery reaction result in the nuclear capacity charging and discharging process, a decision algorithm is executed to sequentially control the controllable discharging module and the sulfur removal activation executing module to execute sulfur removal repair on the storage battery, and the effective capacity of the repaired storage battery is finally obtained.
And the man-machine interaction module is used for: the man-machine interaction module is used for realizing parameter setting and control starting of the device function by a user, receiving the telemetry information output by the decision control module, effectively displaying the state quantity of the storage battery and realizing the abnormal alarm function. Mainly comprises a screen, a sound box, a button, light and the like.
Other necessary device supply modules: including power supply, communication interface, self-checking module, etc.
The storage battery nuclear capacity device of the transformer substation is effectively arranged in two groups of storage batteries (a large multi-transformer substation is powered by double storage batteries, and if the power station is not required to be set, a nuclear capacity restoration function is started by a manual command).
And in normal operation, the sampling and inspection module of the device is used for collecting the voltage and temperature states of all the single cells of the storage battery in real time, and the decision control module is used for judging whether the voltage or temperature value exceeds a preset threshold value or not, and the man-machine interaction module is used for sending alarm information in abnormal operation.
And starting a storage battery nuclear capacity restoration function according to the manual command and the preset time, wherein a working flow chart is shown in figure 2.
S1, starting, and switching to a step S2;
s2, detecting the state of the storage battery, and turning to a step S3;
s3, checking whether the state of the storage battery pack is normal, switching to the step S4 in the normal state, and switching to the step S9 in the abnormal state;
s4, determining whether to enter a repairing capacity state, entering the repairing capacity state to enter a step S5, and not entering the repairing capacity state to enter a step S11;
s5, battery pack state switching control;
s6, performing a discharging-charging process of the sulfur removal restoration;
s7, checking whether the nuclear capacity result is abnormal, transferring the abnormality to the step S9, and transferring the abnormality to the step S8;
s8, battery pack state switching control;
s9, alarming and outputting;
s10, overhauling;
s11, determining whether to exit the device, exiting to S12, and not exiting to S2;
s12, ending.
The nuclear capacity repair method has the steps shown in fig. 3, and is specifically described as follows:
(1) Detecting that the state quantity of each single body of a target storage battery pack (such as a #1 storage battery pack) is normal (voltage and temperature), detecting and determining that the state quantity of each single body of another storage battery pack is normal, detecting and determining that a direct current breaker K1 in a control state switching module is at an on position, and disconnecting the direct current breaker K1 to complete the separation of the target storage battery pack from an operation state and converting the separation into a nuclear capacity restoration state.
(2) I for target storage battery pack 10 The whole group of constant current discharge with discharge rate records discharge time, and when detecting that the single voltage drop reaches the preset termination voltage U d1 Or the whole set of voltages is dropped to U d1 * Stopping constant current discharge at N, recording discharge time t 1y And the voltage value of each storage battery unit after discharging, namely the discharging completion voltage value of N storage battery units is U respectively 1i I=1, 2, 3, …, N, respectively corresponding to the battery cells numbered 1,2, 3 … N, while recording the discharge electric quantity Q of the whole group of battery packs 1 . When the voltage drop rate of the single battery meets the excessively fast judging condition, determining the single battery as a sulfur removal restoration target battery, and evaluating and calculating the voltage after discharging all the single batteries to obtain all the sulfur removal restoration target battery packs T1.
(3) To the target storage battery group by I 10 Constant current charging is carried out, the voltage of each battery unit is increased, and when the voltage of the unit reaches U h Stopping constant voltage charge, recording the charge duration t 2 The voltage values of N battery monomers after stopping charging are respectively U 2i I=1, 2, 3, …, N, and V is the rate of change of voltage of any battery during this charge 2i =U 2i -U 1i /t 2 I=1, 2, … and N, when the condition of judging the boosting rate of the single voltage is too fast, determining the single storage battery as a sulfur removal restoration target battery, and evaluating and measuring the voltage after discharging all the single batteries to obtain all the sulfur restoration target battery groups T2.
(4) Taking a common set of the sulfur removal restoration target battery packs T1 and T2 to obtain a sulfur removal restoration target battery pack T3, and performing sulfur removal activation charging on the single batteries in the battery pack T3, wherein the method comprises the steps of firstly outputting continuous positive pulse charging for k periods to the single batteries of the target battery, wherein the duty ratio is Tz, and the charging electric quantity is Q c Then outputting reverse voltage to the target monomer to discharge the monomer, wherein the discharge electric quantity is Q d Control the discharge time to make Q d Equal to Q l The whole process is a one-time sulfur removal activation charging and discharging process. Circularly executing the sulfur removal activation charge-discharge process, and recording the kth target monomer voltage as U ki Wherein i is T3, when U ki Less than U （k-1）i When the activity of sulfur removal is effective, according to U ki And U （k-1）i The phase difference value is adjusted to increase the forward pulse amplitude and reduce the pulse duty ratio until the voltage phase difference of two times before and after the cycle execution of the sulfur removal activation charge and discharge meets the minimum set requirement or reaches the set highest cycle times, and the sulfur removal activation charge process is stopped.
(5) The voltage of all the single batteries is U h Constant voltage charging of (a) until all the cell voltages are equal to or greater than a preset termination voltage U d2 And stopping constant voltage charging to complete one-time discharging-charging process with the sulfur removal restoration function.
(6) Second time I of the whole group of storage battery 10 The whole group of constant-current discharge with discharge rate reaches the preset termination when detecting that the single voltage is reducedVoltage U d1 Or the whole set of voltages is dropped to U d1 * Stopping discharging when N is time, and recording the discharging electric quantity Q of the whole group of storage battery 2 For the effective discharge capacity of the target storage battery after the sulfur removal repair process, recording the voltage of each single battery, sequentially executing steps 3 to 5 on the whole storage battery, performing constant current discharge on the whole storage battery for the third time, and recording the discharge electric quantity Q of the whole process 3 Taking min (Q) 2 、Q 3 ) And when the detection capacity of the nuclear capacity device is smaller than a preset requirement value, the decision control module sends an alarm signal to the man-machine interaction module.
(7) And (3) recovering the working state of the target storage battery, monitoring and determining that the voltage and the temperature of each single battery of the target storage battery meet the requirements, and closing the direct current breaker K1 to finish the process that the target storage battery is separated from the nuclear capacity repair state and is converted into the operation state.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (5)
1. A substation storage battery nuclear containment device, comprising: the system comprises a sampling and inspection module, a controllable discharging module, a sulfur removal activation execution module, a control decision module, a state switching module and a man-machine interaction module;
the sampling and inspection module comprises: the voltage measuring instrument, the current measuring instrument and the temperature sensor are connected in series to the output end of the positive electrode of the battery, the voltage measuring instrument is connected with two ends of the battery in parallel, and the temperature sensor is arranged on the shell of the battery, so that the power supply state of the battery pack, the terminal voltage of each battery cell, the charging/discharging current of the battery and the temperature of the battery can be obtained through traversal;
the controllable discharging module adjusts the discharging resistance of each execution unit of the discharging module according to the output command of the control decision module, performs target controllable discharging on the storage battery unit of the storage battery pack, and feeds back the execution result to the control decision module; the controllable discharging module consists of a plurality of discharging execution monomers, and each discharging execution monomer is connected to a monomer with a corresponding number of the storage battery through a wiring and is output in a common path with the desulfurizing charging execution monomer of the desulfurizing activation execution module;
the sulfur removal activation execution module flexibly realizes two modes of uniform charge and pulse charge according to an output command of the control decision module, adjusts pulse amplitude and width in the pulse charge and discharge process, outputs a sulfur removal pulse to a target storage battery monomer of the storage battery pack, and feeds back an execution result to the control decision module; the sulfur removal activation execution module consists of a plurality of sulfur removal charging execution monomers, wherein each sulfur removal charging execution monomer is connected to a monomer with a corresponding number of the storage battery through a wiring and is output in a common path with the execution monomer of the controllable discharging module;
the state switching module comprises: the controllable direct current breaker is arranged at the overall wiring port of the storage battery pack, and is used for realizing state switching of the storage battery pack according to the command of the control decision module, and feeding back information to the control decision module after execution is finished;
the decision control module receives input feedback of the sampling and inspection module, the state switching module, the man-machine interaction module, the controllable charging and discharging module and the sulfur removal activation execution module, and outputs a responsive control command to the sampling and inspection module, the state switching module, the man-machine interaction module, the controllable charging and discharging module and the sulfur removal activation execution module through a decision algorithm;
the man-machine interaction module realizes parameter setting and control starting of a user on the device function through man-machine interaction, receives telemetry information output by the decision control module, displays the state quantity of the storage battery and realizes an abnormal alarm function;
the storage battery nuclear capacity device of the transformer substation further comprises: the device comprises a power supply module, a communication interface and a self-checking module;
the man-machine interaction module further comprises: screen, sound, buttons and lights.
2. A method of nuclear capacity of a substation storage battery nuclear capacity device according to claim 1, comprising the steps of:
s1, starting, and switching to a step S2;
s2, detecting the state of the storage battery, and turning to a step S3;
s3, checking whether the state of the storage battery pack is normal, switching to the step S4 in the normal state, and switching to the step S7 in the abnormal state;
s4, determining whether to enter a repairing capacity state, entering the repairing capacity state to enter a step S5, and not entering the repairing capacity state to enter a step S9;
s5, repairing the nuclear capacity to obtain a nuclear capacity result, and if the nuclear capacity is abnormal, switching to the step S7, and if the nuclear capacity is not abnormal, switching to the step S6;
s6, battery pack state switching control is carried out, and the step S9 is carried out;
s7, outputting an alarm, and turning to a step S8;
s8, overhauling treatment, and turning to a step S10;
s9, determining whether to exit the device, exiting to S10, and not exiting to return to S2;
s10, ending;
the repairing the nuclear capacity in the step S5, obtaining a nuclear capacity result comprises the following steps:
step 1: the whole storage battery is discharged to a termination condition 1 under constant current, and a target battery group T1 is formed according to the discharge termination voltage;
step 2: the whole storage battery is charged to a termination condition 2 under constant current, and a target battery group T2 is formed according to the voltage rising rate;
step 3: taking a common set of the sulfur removal restoration target battery packs T1 and T2 to obtain a sulfur removal restoration target battery pack T3, and executing self-circulation adjustment sulfur removal activation charging aiming at the T3;
step 4: the whole group of storage batteries are charged to a termination condition 3 at constant voltage;
step 5: executing the step 1, and recording the discharge capacity 1;
step 6: executing the steps 2 and 4, executing the step 1, and recording the discharge capacity 2;
step 7: and (5) checking and analyzing whether the twice discharge capacity meets the minimum standard or not, and feeding back signals.
3. The nuclear capacity method according to claim 2, wherein the constant current discharge of the storage battery pack in step 1 adopts the following method:
the method comprises the steps of performing whole-group constant-current discharge of a discharge rate on a target storage battery, recording discharge time, stopping constant-current discharge when detecting that single voltage drops to a preset end voltage or the whole-group voltage drops to the whole preset end voltage, recording the discharge time and voltage values of all storage battery single bodies after discharge, and simultaneously recording discharge electric quantity Q of the whole-group storage battery 1 。
4. The nuclear capacity method according to claim 2, wherein the constant current discharge of the storage battery pack in step 2 adopts the following method:
and (3) carrying out constant-current charging on the target storage battery pack, wherein the voltage of each battery cell is increased, stopping constant-voltage charging when the voltage of the battery cell reaches the termination condition 2, recording the charging duration, and counting the voltage change rate of any battery in the charging process as V.
5. The nuclear capacity method according to claim 2, wherein the desulfur activation charge for performing the self-circulation adjustment for T3 adopts the following method:
outputting continuous positive pulse charging with k periods to the target battery cell, wherein the duty ratio is Tz, and the charging electric quantity is Q c Then outputting reverse voltage to the target monomer to discharge the monomer, wherein the discharge electric quantity is Q d Control the discharge time to make Q d Equal to the discharge quantity Q of the whole group of storage battery 1 The whole process is a one-time sulfur removal activation charging and discharging process; circularly executing the sulfur removal activation charge-discharge process, and recording the kth target monomer voltage as U ki Wherein i is T3, when U ki Less than U (k-1)i When the activity of sulfur removal is effective, according to U ki And U (k-1)i The phase difference value is adjusted to increase the forward pulse amplitude and reduce the pulse duty ratio until the voltage phase difference of two times before and after the cycle execution of the sulfur removal activation charge and discharge meets the minimum setting requirement or reaches the set highest cycle timeThe sulfur removal activation charging process is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442557.4A CN107219467B (en) | 2017-06-13 | 2017-06-13 | Transformer substation storage battery nuclear capacity device with sulfur removal and repair functions and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442557.4A CN107219467B (en) | 2017-06-13 | 2017-06-13 | Transformer substation storage battery nuclear capacity device with sulfur removal and repair functions and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107219467A CN107219467A (en) | 2017-09-29 |
| CN107219467B true CN107219467B (en) | 2023-05-09 |
Family
ID=59948531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710442557.4A Active CN107219467B (en) | 2017-06-13 | 2017-06-13 | Transformer substation storage battery nuclear capacity device with sulfur removal and repair functions and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107219467B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281718B (en) * | 2017-12-28 | 2019-11-05 | 浙江赫克力能源有限公司 | A kind of restorative procedure of waste and old lead acid accumulator |
| CN108551189B (en) * | 2018-05-14 | 2021-03-12 | 广东电网有限责任公司电力科学研究院 | Automatic capacity checking method and device for direct current system of transformer substation |
| CN109901079B (en) * | 2019-03-25 | 2021-06-08 | 深圳市中联通电子股份有限公司 | Remote capacity checking method and system for storage battery of electric direct-current power supply |
| CN112363073B (en) * | 2020-12-05 | 2024-01-09 | 云南电网有限责任公司 | One-key type nuclear capacity device and method for direct-current storage battery of factory station |
| CN112909367B (en) * | 2021-01-18 | 2023-07-25 | 深圳蓝信电气有限公司 | Storage battery activation nuclear capacity and repairing method |
| CN114137427B (en) * | 2021-10-25 | 2024-03-22 | 深圳蓝信电气有限公司 | Method for automatically checking capacity of single storage battery in storage battery pack |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011238526A (en) * | 2010-05-12 | 2011-11-24 | Furukawa Electric Co Ltd:The | Charge/discharge control method and charge/discharge controller of power storage device |
| CN104953191A (en) * | 2015-05-07 | 2015-09-30 | 国网河南省电力公司电力科学研究院 | Restoration method for performances of transformer substation returned lead-acid storage battery |
| CN105870530A (en) * | 2016-05-18 | 2016-08-17 | 山西嘉禾兴节能技术有限公司 | Waste lead storage battery repair and activation method |
-
2017
- 2017-06-13 CN CN201710442557.4A patent/CN107219467B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011238526A (en) * | 2010-05-12 | 2011-11-24 | Furukawa Electric Co Ltd:The | Charge/discharge control method and charge/discharge controller of power storage device |
| CN104953191A (en) * | 2015-05-07 | 2015-09-30 | 国网河南省电力公司电力科学研究院 | Restoration method for performances of transformer substation returned lead-acid storage battery |
| CN105870530A (en) * | 2016-05-18 | 2016-08-17 | 山西嘉禾兴节能技术有限公司 | Waste lead storage battery repair and activation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107219467A (en) | 2017-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107219467B (en) | Transformer substation storage battery nuclear capacity device with sulfur removal and repair functions and method | |
| CN101752624B (en) | Equalizing charge method and equalizing charge device for battery | |
| US20170288417A1 (en) | Fast Charging Apparatus and Method | |
| KR101667913B1 (en) | Apparatus and Method For Equalizing Charge of a Battery Pack | |
| KR102758018B1 (en) | Battery management system, battery pack, energy storage system, and battery management method | |
| CN108336780B (en) | Control method and system for gradient utilization of battery pack | |
| US20140266049A1 (en) | Detection and prevention of short formation in battery cells | |
| CN103324180A (en) | Battery pack remote monitoring system and method and energy storage and power supply device remote monitoring system | |
| CN103855748A (en) | Vehicle charging system and method | |
| CN103001288B (en) | Battery set charge/discharge equalization methods, balancer and attending device | |
| CN110474118B (en) | Energy feedback type battery cell series formation and capacity grading test system and method | |
| CN103296726B (en) | Battery energy storage module and control method thereof and energy storage for power supply system | |
| CN106329643A (en) | Charging control method and charging control system | |
| JP2013162597A (en) | Assembled battery discharge control system and assembled battery discharge control method | |
| CN202333884U (en) | Charging-discharging control system for parallel type lithium ion battery pack | |
| CN108964179A (en) | Battery equalization system and method | |
| CN102842945A (en) | Intelligent charger for storage battery | |
| JP5409163B2 (en) | Lithium-ion battery management device, management method, and lithium-ion battery system | |
| JP5366641B2 (en) | Lithium-ion battery management device and lithium-ion battery system | |
| CN103915875A (en) | Lithium battery charging and discharging control system for novel solar street lamp | |
| CN107294163B (en) | Storage battery state inspection method and device with storage battery monomer balancing function | |
| CN111092471B (en) | Using method of overcharge and overdischarge protection circuit for energy storage battery pack | |
| CN107946528A (en) | Battery pack and battery pack system | |
| CN105529782B (en) | Online storage battery pack lagging battery emergency auxiliary system and working method thereof | |
| CN114844199B (en) | Uninterrupted BMS system for energy storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |