CN112363073A - One-key type capacity checking device and method for station direct-current storage battery - Google Patents
One-key type capacity checking device and method for station direct-current storage battery Download PDFInfo
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- 238000012806 monitoring device Methods 0.000 claims abstract description 15
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- 238000012544 monitoring process Methods 0.000 claims abstract description 10
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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
- G01R31/387—Determining ampere-hour charge capacity or SoC
- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
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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]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a one-key type capacity checking device and method for a station direct-current storage battery, and belongs to the technical field of power equipment performance detection. The device comprises a discharge module, a communication control module, a signal output module, a discharge interface, a data acquisition port and a test data export interface; the communication control module is respectively connected with the discharge module, the signal output module and the data acquisition port; the discharging module is also connected with the discharging interface; the signal output module is also connected with the test data export interface; the discharging interface is used for connecting the positive electrode and the negative electrode of the direct-current storage battery; the communication control module is connected with the direct current system monitoring device through the data acquisition port, the signal output module is connected with the mobile storage medium through the test data export interface, and the signal output module is also directly connected with the monitoring system. The invention avoids complex external wiring, solves the problem of insufficient technical level of operation and maintenance personnel, solves the risk of over-discharge of the storage battery by automatically controlling the discharge process, and is easy to popularize and apply.
Description
Technical Field
The invention belongs to the technical field of power equipment performance detection, and particularly relates to a one-key type capacity checking device and method for a station direct-current storage battery.
Background
The storage battery of the direct current system is important secondary equipment in the power system, and the main function of the storage battery is to provide a working power supply for the secondary equipment of the total station and the circuit breaker operating mechanism when the charging device is locked or the charging device has a fault due to the fault of the alternating current system so as to ensure the normal work of the equipment.
The regular capacity checking work of the storage battery of the direct current system is detection work which is carried out by regulations and is mandatory, and the overall performance of the storage battery can be effectively detected. The newly installed or overhauled valve-regulated storage battery is subjected to a full-check charge-discharge test, and the later test period is that the operation age is once every 2 years within 4 years and once every 1 year in more than 4 years, so that the overall workload is large. At present, the nuclear capacity work is carried out manually, and the following problems mainly exist:
1. the wiring in the nuclear capacity process is complex, the analysis of nuclear capacity test data needs a certain theoretical technical level, and many plant station operation and maintenance personnel do not master the storage battery nuclear capacity method and requirements and are difficult to independently carry out the nuclear capacity test.
2. During the capacity checking period, terminal voltage data of a single storage battery needs to be recorded once every hour, if the voltage data of the storage battery is 2V, a multimeter needs to be used for measuring and recording data of 108 storage batteries, the time is about half an hour, and the workload is large. And in the measuring and recording process, the measured data is no longer the data at the integral point time required by the regulation, the data has the problems of untimely measurement and distortion, and the comparability is not realized.
3. And the nuclear capacity operation requires that the discharge of the single storage battery or the whole group of storage batteries is stopped immediately when the terminal voltage is lower than the discharge termination voltage, and the storage batteries which do not meet the requirements are activated. The battery terminal voltage cannot be monitored in real time through manual measurement, and is usually lower than the discharge termination voltage in the empty window period of two times of measurement, and the battery terminal voltage cannot be found in the next measurement period. In this case, the battery may be overdischarged, which may damage the battery and reduce the activation success rate.
4. At present, an independent storage battery discharge instrument product in the market can monitor the voltage of a storage battery terminal in real time, and discharge is stopped when the voltage of a storage battery monomer terminal is lower than a discharge stop voltage, but wiring is needed on a positive terminal and a negative terminal of each storage battery before discharge, wiring is complex and time-consuming, and the risk of short circuit caused by wiring errors exists.
Therefore, how to overcome the defects of the prior art is a problem which needs to be solved urgently in the technical field of performance detection of the power equipment at present.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a one-key type nuclear capacity device and a one-key type nuclear capacity method for a station direct-current storage battery, the device and the method solve the problems of complex wiring of a storage battery discharging instrument and real-time recording of the voltage of the storage battery at present, and solve the problem of insufficient technical level of operation and maintenance personnel by simplifying the wiring of a storage battery access device and adopting a one-key type operation mode and realizing the control of a discharging process and the analysis of test results; and through the automatic control discharge process, solve the risk of battery overdischarge, easily popularize and apply.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a one-button type nuclear capacity device for a station direct-current storage battery comprises: the device comprises a discharge module, a communication control module, a signal output module, a discharge interface, a data acquisition port and a test data export interface;
the communication control module is respectively connected with the discharge module, the signal output module and the data acquisition port;
the discharging module is also connected with the discharging interface;
the signal output module is also connected with the test data export interface;
the discharging interface is used for connecting the positive electrode and the negative electrode of the direct-current storage battery;
the communication control module is connected with the direct current system monitoring device through the data acquisition port to obtain the actually measured voltage of the direct current storage battery pack;
the signal output module is connected with the monitoring system and used for sending out alarm information;
the signal output module is also connected with the mobile storage medium through a test data export interface and is used for exporting a storage battery nuclear capacity test report;
the user sets the storage battery parameters through the communication control module, and the communication control module automatically generates discharge parameters according to the storage battery parameters for the user to determine; after the user determines the discharge parameters, the communication control module controls the starting of the nuclear capacity, the communication control module controls the discharge module to discharge according to the discharge parameters to perform the nuclear capacity checking, after the nuclear capacity is finished, a nuclear capacity test report is automatically generated through the information output module, and the nuclear capacity test report is exported through the data export interface.
Further, it is preferable that the user can modify and determine the automatically generated discharge parameter; the storage battery parameters comprise storage battery capacity C and monomer rated voltage UeThe whole set of rated voltage UnAnd the number of storage batteries N; the discharge parameter comprises discharge current IoDischarge time T and storage battery monomer discharge termination voltage UfaAnd the discharge end voltage U of the whole group of storage batteriesza。
Further, preferably, the discharging interface comprises a positive port and a negative port, and the positive port and the negative port are used as an access interface of the direct current storage battery pack; the discharging module is connected with the direct-current storage battery through the discharging interface, the discharging module is provided with a discharging load, and the discharging module receives an instruction of the communication control module to realize constant-current discharging of the direct-current storage battery to the load and control starting and stopping of a discharging process.
Further, preferably, the data acquisition port is in communication connection with the direct current system monitoring device; the data acquisition port supports RS485, RS232, RS422 and Ethernet ports; the test data export interface is a USB interface.
Further, preferably, the communication control module and the dc system monitoring device communicate with each other through a data acquisition port to acquire the voltage U at the single battery terminalj；
The communication control module also provides a user interaction interface for receiving user instructions, and comprises: setting storage battery parameters, starting a nuclear capacity instruction, an emergency stop instruction, deriving a nuclear capacity test report instruction, and sending a control instruction to a discharging module to control a discharging process;
and the signal output module generates a core capacity working report according to the data recorded by the communication control module and the core capacity conclusion, and derives the core capacity working report through the test data derivation interface.
The invention also provides a one-key type capacity checking method for the plant station direct-current storage battery, and the one-key type capacity checking device for the plant station direct-current storage battery comprises the following steps:
(1) after the direct current bus where the storage battery to be checked is isolated by manual operation, the storage battery to be checked is connected to a discharge interface, and the communication control module displays the voltage of the whole set of direct current storage battery in real time;
the user sets storage battery parameters through the communication control module: capacity C of accumulator, rated voltage U of single bodyeThe whole set of rated voltage UnThe number N of storage batteries, and a communication control moduleBlock automatic calculation discharge parameters: discharge current IoDischarge time T1The discharge termination voltage U of the storage battery monomerfaThe discharge end voltage U of the whole group of storage batteriesza；
The above parameter calculation formula is:
discharge current Io＝C10，C10The current can meet the requirement of continuous discharge for 10 hours under the rated capacity of the storage battery;
time of discharge
Discharge end voltage U of accumulator cellfa＝k1·Ue；
Complete group discharge end voltage U of storage batteryza＝k2·Un；
Wherein: the user can modify and confirm the automatically calculated discharge parameters; k is a radical of1、k2Is a coefficient;
(2) establishing communication connection between the data acquisition port and the direct current system monitoring device through manual operation, and acquiring the voltage of the storage battery pack in real time;
(3) starting discharge according to discharge parameters, and controlling discharge current to a given discharge current IoFor a given discharge time T1；
(4) Collecting the voltage of a single storage battery of the storage battery pack at fixed time intervals;
(5) comparing the terminal voltage of the storage battery with the discharge termination voltage in real time;
(6) if the discharge time T is reached1If the terminal voltage of the storage battery is not less than the discharge termination voltage, ending the nuclear capacity and generating a nuclear capacity work report;
(7) if given the discharge time T1And at any moment, if the terminal voltage of the storage battery is less than the discharge termination voltage, ending the core capacity, sending alarm information and generating a core capacity work report.
Further, it is preferable that k is1Has a value of 0.9, k2The value of (A) is 0.9;nuclear capacity workThe reports comprising reservoirs at fixed timesTerminal voltage data of battery andnuclear capacity workAnd (6) concluding.
Further, it is preferable that the comparison between the battery terminal voltage and the discharge end voltage is specifically: the communication control module collects the single terminal voltage U of the storage batteryjAccumulating to obtain the terminal voltage of the whole group of storage batteries
Respectively comparing the terminal voltage of the single storage battery with the terminal voltage of the whole group of storage batteries; wherein: j is more than or equal to 1 and less than or equal to N, and N is the number of the storage batteries;
(1) at a given discharge time T1Internal, if terminal voltage U of whole group of storage batteryZLess than the whole set discharge end voltage UzaJudging that the terminal voltage of the storage battery is less than the discharge end voltage, and recording the time T1a，T1aThe unit is hour;
(2) at a given discharge time T1In case of voltage U at any cell battery terminaljLess than the discharge end voltage U of the monomerfaDetermining that the terminal voltage of the storage battery is less than the discharge end voltage, and recording the time T1aAnd a specific unqualified storage battery number j.
Further, preferably, the communication control module prestores a one-key core capacity starting time, an hour finishing time and an ending time after starting, and starts and ends the core capacity according to prestored contents. The communication control module controls the information output module to provide two pairs of idle contacts and sends an alarm signal that the capacity of the storage battery does not meet the requirement to the monitoring system; the two pairs of empty contacts respectively have unqualified single capacity of the storage battery and unqualified whole group capacity of the storage battery; the alarm is a local sound-light alarm carried out by controlling the information output module through the communication control module.
Further, preferably, the conclusion of the kernel volume work is specifically:
(1) when the voltage of the storage battery terminal is not less than the discharge termination voltage, the capacity checking work conclusion comprises the conclusion that the storage battery capacity is qualified and the discharge current IoAnd discharge time T1；
(2) When the terminal voltage of the single battery is smallWhen the single body discharge termination voltage is reached, the nuclear capacity working conclusion comprises the conclusion that the single body capacity of the storage battery is not qualified and the discharge current IoTime T1aAnd unqualified storage battery number j;
(3) when the terminal voltage of the whole group of storage batteries is less than the discharge termination voltage of the whole group, the conclusion of the capacity checking work comprises the conclusion that the capacity of the whole group of storage batteries is not qualified and the discharge current IoAnd time T1a。
The direct current system monitoring device in the invention refers to a device for monitoring and controlling a direct current system storage battery and a charger, the monitoring system refers to a comprehensive automatic system of a plant station, and the monitoring system and the comprehensive automatic system have different structures and are the existing devices and systems.
As will be understood by those skilled in the art, the information output module in the invention is preferably provided with an audible and visual alarm function.
The discharge interface of the invention provides two ports for positive and negative electrodes to be connected as an interface for a direct current storage battery pack to be connected into the device, and can measure the voltage U of the whole group of storage battery terminalszSpecifically, the voltage of each storage battery terminal acquired through the data acquisition interface is accumulated by the communication control module.
The test data export interface is a USB interface and can be connected with a USB flash disk and other mobile storage media to export the core capacity work report.
The capacity checking work report is in a recognizable word text or PDF format, and the signal output module (3) has the capacity of storing the capacity checking report for at least 10 times.
The data acquisition port of the invention supports RS485, RS232, RS422 and Ethernet ports. The communication protocol supports general protocols such as MODBUS and IEC103, and supports custom protocols of individual manufacturers.
Compared with the prior art, the device has the following innovation points: firstly, the terminal voltage of the storage battery is obtained through communication with a direct current system monitoring device instead of obtaining the terminal voltage of the storage battery by connecting a measuring line to each storage battery; and secondly, a one-key operation mode is adopted, a user only needs to perform simple wiring and parameter setting, the device automatically calculates the discharge parameters, controls the discharge process and automatically generates a test report.
Compared with the prior art, the invention has the beneficial effects that:
1. the device provides a communication interface for collecting the voltage of the storage battery, can directly collect the voltage data of the storage battery, avoids complex external wiring and realizes the real-time collection of the voltage of the storage battery. The method not only saves the testing manual wiring cost, avoids wiring errors and potential wiring safety hazards, but also realizes real-time acquisition of all voltage data in the true sense, solves the problem of data distortion caused by manual operation, and the voltage acquisition data have the basis of mutual contrastive analysis.
2. The terminal voltage data of the storage battery is monitored and collected in real time, and once the terminal voltage data is lower than the discharge termination voltage, the discharge is immediately finished, so that the over-discharge of the storage battery can be avoided, and the activation success rate is improved.
3. Through simplifying the mode that battery access device wiring and adopting a key formula operation to realize discharge process control and test result analysis, solve the not enough problem of fortune dimension personnel technical merit.
4. The device mountable is in standard screen cabinet, also can independently dispose the handcart and install in the handcart, can be applied to the scene of no empty screen position, easily popularizes and applies.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a one-button type nuclear capacity device of a station DC storage battery of the invention; wherein, 1, a discharge module; 2. a communication control module; 3. a signal output module; 4. a discharge interface; 5. a data acquisition port; 6. a test data export interface;
FIG. 2 is a flow chart of a one-button capacity checking method for a station DC storage battery.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The specific techniques, connections, conditions, or the like, which are not specified in the examples, are performed according to the techniques, connections, conditions, or the like described in the literature in the art or according to the product specification. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "provided" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in fig. 1, a one-button type nuclear capacity device for a station dc storage battery is characterized by comprising: the device comprises a discharge module 1, a communication control module 2, a signal output module 3, a discharge interface 4, a data acquisition port 5 and a test data export interface 6;
the communication control module 2 is respectively connected with the discharge module 1, the signal output module 3 and the data acquisition port 5;
the discharging module 1 is also connected with a discharging interface 4;
the signal output module 3 is also connected with a test data export interface 6;
the discharging interface 4 is used for connecting the positive electrode and the negative electrode of the direct-current storage battery;
the communication control module 2 is connected with a direct current system monitoring device through a data acquisition port 5 to obtain the actual measurement voltage of the direct current storage battery pack;
the signal output module 3 is connected with the monitoring system and used for sending out alarm information;
the signal output module 3 is also connected with the mobile storage medium through a test data export interface 6 and is used for exporting a storage battery nuclear capacity test report;
a user sets storage battery parameters through the communication control module 2, and the communication control module 2 automatically generates discharge parameters according to the storage battery parameters for the user to determine; after a user determines a discharge parameter, the communication control module 2 controls the starting of the nuclear capacity, the communication control module 2 controls the discharge module 1 to discharge according to the discharge parameter to perform the nuclear capacity, after the nuclear capacity is finished, a nuclear capacity test report is automatically generated through the information output module 3, and the nuclear capacity test report is exported through the data export interface 6.
As a preferred scheme, a user can modify and determine the automatically generated discharge parameters; the storage battery parameters comprise storage battery capacity C and monomer rated voltage UeThe whole set of rated voltage UnAnd the number of storage batteries N; the discharge parameter comprises discharge current IoDischarge time T1The discharge termination voltage U of the storage battery monomerfaAnd the discharge end voltage U of the whole group of storage batteriesza。
As a preferred scheme, the discharge interface 4 comprises a positive port and a negative port which are used as an access interface of the direct current storage battery pack; the discharging module 1 is connected to the direct-current storage battery through the discharging interface 4, the discharging module 1 is provided with a discharging load, and the discharging module 1 receives an instruction of the communication control module 2 to realize constant-current discharging of the direct-current storage battery to the load and control starting and stopping of a discharging process.
As a preferred scheme, the data acquisition port 5 is in communication connection with a direct current system monitoring device; the data acquisition port 5 supports RS485, RS232, RS422 and Ethernet ports; the test data export interface 6 is a USB interface.
As the preferred scheme, the communication control module 2 and the direct current system monitoring device realize communication through a data acquisition port 5, and acquire the voltage U of the single storage battery terminalj；
The communication control module 2 also provides a user interaction interface for receiving user instructions, and comprises: setting storage battery parameters, starting a nuclear capacity instruction, an emergency stop instruction, deriving a nuclear capacity test report instruction, and sending a control instruction to a discharging module to control a discharging process;
the signal output module 3 generates a core capacity work report according to the data recorded by the communication control module 2 and the core capacity conclusion, and derives the core capacity work report through the test data derivation interface 6.
Referring to fig. 2, a one-key capacity checking method for a station dc storage battery is adopted, and the one-key capacity checking device for the station dc storage battery is specifically implemented by the following steps:
1. after the direct current bus is used for isolating the storage battery to be checked by manual operation, the storage battery to be checked is connected to a discharge interface, and at the moment, the communication control module can display the whole set of voltage of the direct current storage battery in real time;
2. the user sets storage battery parameters through the communication control module: capacity C of accumulator and rated voltage U of single bodyeThe whole set of rated voltage UnThe number N of the storage batteries is determined, and the communication control module automatically calculates the discharge parameters: discharge current IoDischarge time T1The discharge termination voltage U of the storage battery monomerfaThe discharge end voltage U of the whole group of storage batteriesza；
The above parameter calculation formula is: discharge current Io＝C10，C10The current can meet the requirement of continuous discharge for 10 hours under the rated capacity of the storage battery;
time of discharge
Discharge end voltage U of accumulator cellfa＝k1·Ue；
Complete group discharge end voltage U of storage batteryza＝k2·Un；
Wherein: k is a radical of1Recommended value of (1) is 0.9, k2Is 0.9. The user can modify and confirm the automatically calculated discharge parameters;
3. establishing communication connection between the device and a direct current system monitoring device through manual operation, and collecting the voltage of the storage battery pack in real time;
4. starting discharge according to discharge parameters, and controlling discharge current to a given discharge current IoFor a given discharge time T1；
5. Collecting the voltage of a single storage battery of the storage battery pack at fixed time intervals;
6. comparing the terminal voltage of the storage battery with the discharge termination voltage in real time, and collecting the single terminal voltage U of the storage battery by the communication control modulejAccumulating to obtain the terminal voltage of the whole group of storage batteries
And respectively comparing the terminal voltage of the single storage battery with the terminal voltage of the whole group of storage batteries. Wherein: j is more than or equal to 1 and less than or equal to N, and N is the number of the storage batteries.
(1) At a given discharge time T1Internal, if terminal voltage U of whole group of storage batteryzLess than the whole set discharge end voltage UzaJudging that the terminal voltage of the storage battery is less than the discharge end voltage, and recording the time T1a，T1aThe unit is hour (h).
(2) At a given discharge time T1In case of voltage U at any cell battery terminaljLess than the discharge end voltage U of the monomerfaJudging that the terminal voltage of the storage battery is less than the discharge end voltage, and recording the time T1aAnd the number of the specific unqualified storage battery numbers j, j can be more than 1.
7. If the discharge time T is reached1The terminal voltage of the storage battery is not less than the discharge end voltage,then the kernel volume is endedProcedure, generating kernelContaining workAnd (6) reporting.Nuclear capacity workThe report includes the battery terminal voltage data at a fixed time andnuclear capacity workAnd (6) concluding. The fixed time comprises a keyNuclear capacity startingTime, hour after start-up and end time.Nuclear capacity workThe conclusion includes:
(1) when the battery terminal voltage is not less than the discharge end voltage,nuclear capacity workThe conclusion comprises the conclusion that the capacity of the storage battery is qualified and the discharge current IoAnd discharge time T1；
(2) When the cell terminal voltage is less than the cell discharge termination voltage,nuclear capacity workThe conclusion comprises that the capacity of the storage battery monomer is not qualified and the discharge current IoTime T1aAnd unqualified storage battery number j;
(3) when the terminal voltage of the whole group of storage batteries is less than the discharge termination voltage of the whole group, the conclusion of the capacity checking work comprises the conclusion that the capacity of the whole group of storage batteries is not qualified and the discharge current IoAnd time T1a。
8. If given the discharge time T1At any time, the voltage of the storage battery terminal is less than the discharge termination voltage, and the kernel is endedA program for sending alarm information and generating kernelContaining workAnd (6) reporting. The alarm information is two pairs of idle contacts provided by the communication control module control information output module, and can send alarm signals that the capacity of the storage battery does not meet the requirement to the monitoring system. The two pairs of empty contacts respectively provide local sound and light alarm for the unqualified single capacity of the storage battery and the unqualified whole group capacity of the storage battery.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A one-button type nuclear capacity device for a station direct-current storage battery is characterized by comprising: the device comprises a discharge module (1), a communication control module (2), a signal output module (3), a discharge interface (4), a data acquisition port (5) and a test data export interface (6);
the communication control module (2) is respectively connected with the discharge module (1), the signal output module (3) and the data acquisition port (5);
the discharging module (1) is also connected with the discharging interface (4);
the signal output module (3) is also connected with a test data export interface (6);
the discharging interface (4) is used for connecting the positive electrode and the negative electrode of the direct-current storage battery;
the communication control module (2) is connected with the direct current system monitoring device through a data acquisition port (5) to obtain the actual measurement voltage of the direct current storage battery pack;
the signal output module (3) is connected with the monitoring system and used for sending out alarm information;
the signal output module (3) is also connected with the mobile storage medium through a test data export interface (6) and is used for exporting a storage battery nuclear capacity test report;
a user sets storage battery parameters through the communication control module (2), and the communication control module (2) automatically generates discharge parameters according to the storage battery parameters for the user to determine; after a user determines a discharge parameter, the communication control module (2) controls to start the nuclear capacity, the communication control module (2) controls the discharge module (1) to discharge according to the discharge parameter to perform the nuclear capacity, after the nuclear capacity is finished, a nuclear capacity test report is automatically generated through the information output module (3), and the nuclear capacity test report is exported through the data export interface (6).
2. The plant station direct current storage battery one-button type nuclear capacity device according to claim 1, characterized in that a user can modify and determine automatically generated discharge parameters; the storage battery parameters comprise storage battery capacity C and monomer rated voltage UeThe whole set of rated voltage UnAnd the number of storage batteries N; the discharge parameter comprises discharge current IoDischarge time T1The discharge termination voltage U of the storage battery monomerfaAnd the discharge end voltage U of the whole group of storage batteriesza。
3. The one-button type nuclear capacity device for the plant station direct-current storage battery according to claim 1, wherein the discharge interface (4) comprises a positive port and a negative port which are used as direct-current storage battery access interfaces; the discharging module (1) is connected to the direct-current storage battery through the discharging interface (4), the discharging module (1) is provided with a discharging load, and the discharging module (1) receives an instruction of the communication control module (2) to realize constant-current discharging of the direct-current storage battery to the load and control starting and stopping of a discharging process.
4. The one-button type nuclear capacity device for the plant station direct-current storage battery according to claim 1, wherein the data acquisition port (5) is in communication connection with a direct-current system monitoring device; the data acquisition port (5) supports RS485, RS232, RS422 and Ethernet ports; the test data export interface (6) is a USB interface.
5. The one-touch factory station DC storage battery capacity checking device according to claim 1, wherein the communication control deviceThe system module (2) and the direct current system monitoring device realize communication through a data acquisition port (5) and acquire the voltage U of the single storage battery terminalj；
The communication control module (2) also provides a user interaction interface for receiving user instructions, and comprises: setting storage battery parameters, starting a nuclear capacity instruction, an emergency stop instruction, deriving a nuclear capacity test report instruction, and sending a control instruction to a discharging module to control a discharging process;
the signal output module (3) generates a core capacity work report according to the data recorded by the communication control module (2) and the core capacity conclusion, and the core capacity work report is exported through the test data export interface (6).
6. A one-key type capacity checking method for a station direct-current storage battery is adopted by the one-key type capacity checking device for the station direct-current storage battery according to any one of claims 1 to 5, and is characterized by comprising the following steps:
(1) after the direct current bus where the storage battery to be checked is isolated by manual operation, the storage battery to be checked is connected to a discharge interface, and the communication control module displays the voltage of the whole set of direct current storage battery in real time;
(2) the user sets storage battery parameters through the communication control module: capacity C of accumulator and rated voltage U of single bodyeThe whole set of rated voltage UnThe number N of the storage batteries is determined, and the communication control module automatically calculates the discharge parameters: discharge current IoDischarge time T1The discharge termination voltage U of the storage battery monomerfaThe discharge end voltage U of the whole group of storage batteriesza；
The above parameter calculation formula is:
discharge current Io＝C10，C10The current can meet the requirement of continuous discharge for 10 hours under the rated capacity of the storage battery;
time of discharge
Discharge end voltage U of accumulator cellfa＝k1·Ue；
Storage battery whole setElectric termination voltage Uza＝k2·Un；
Wherein: the user can modify and confirm the automatically calculated discharge parameters; k is a radical of1、k2Is a coefficient;
(3) establishing communication connection between the data acquisition port and the direct current system monitoring device through manual operation, and acquiring the voltage of the storage battery pack in real time;
(4) starting discharge according to discharge parameters, and controlling discharge current to a given discharge current IoFor a given discharge time T1；
(5) Collecting the voltage of a single storage battery of the storage battery pack at fixed time intervals;
(6) comparing the terminal voltage of the storage battery with the discharge termination voltage in real time;
(7) if the discharge time T is reached1If the terminal voltage of the storage battery is not less than the discharge termination voltage, ending the nuclear capacity and generating a nuclear capacity work report;
(8) if given the discharge time T1And at any moment, if the terminal voltage of the storage battery is less than the discharge termination voltage, ending the core capacity, sending alarm information and generating a core capacity work report.
7. The factory station direct current storage battery one-button capacity checking method according to claim 6, wherein k is1Has a value of 0.9, k2The value of (A) is 0.9; and the checking capacity work report comprises the storage battery terminal voltage data at a fixed moment and a checking capacity work conclusion.
8. The one-touch capacity checking method for the station direct-current storage battery as claimed in claim 6, wherein the comparison between the terminal voltage of the storage battery and the discharge termination voltage is specifically as follows: the communication control module collects the single terminal voltage U of the storage batteryjAccumulating to obtain the terminal voltage of the whole group of storage batteries
Respectively comparing the terminal voltage of the single storage battery with the terminal voltage of the whole group of storage batteries; wherein: j is more than or equal to 1 and less than or equal to N, and N is the number of the storage batteries;
(1) at a given discharge time T1Internal, if terminal voltage U of whole group of storage batteryzLess than the whole set discharge end voltage UzaJudging that the terminal voltage of the storage battery is less than the discharge end voltage, and recording the time T1a，T1aThe unit is hour;
(2) at a given discharge time T1In case of voltage U at any cell battery terminaljLess than the discharge end voltage U of the monomerfaDetermining that the terminal voltage of the storage battery is less than the discharge end voltage, and recording the time T1aAnd a specific unqualified storage battery number j.
9. The one-button plant station direct-current storage battery capacity checking method according to claim 6, wherein the communication control module prestores one-button plant capacity checking starting time, hour integral point time after starting and ending time, and starts and ends the plant capacity checking according to prestored contents. The communication control module controls the information output module to provide two pairs of idle contacts and sends an alarm signal that the capacity of the storage battery does not meet the requirement to the monitoring system; the two pairs of empty contacts respectively have unqualified single capacity of the storage battery and unqualified whole group capacity of the storage battery; the alarm is a local sound-light alarm carried out by controlling the information output module through the communication control module.
10. The one-button plant station direct-current storage battery capacity checking method according to claim 6, wherein the capacity checking work conclusion is specifically as follows:
(1) when the voltage of the storage battery terminal is not less than the discharge termination voltage, the capacity checking work conclusion comprises the conclusion that the storage battery capacity is qualified and the discharge current IoAnd discharge time T1；
(2) When the voltage of the single storage battery terminal is less than the discharge termination voltage of the single storage battery, the check capacity working conclusion comprises the conclusion that the capacity of the single storage battery is not qualified and the discharge current IoTime T1aAnd unqualified storage battery number j;
(3) when the terminal voltage of the whole group of storage batteries is less than the discharge ending voltage of the whole group of storage batteries, the capacity checking work conclusion comprises the capacity of the whole group of storage batteriesConclusion of unacceptable amount, discharge current IoAnd time T1a。
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