CN116047173A - Device and method for rapidly detecting super capacitor for power distribution network and electrical topology - Google Patents
Device and method for rapidly detecting super capacitor for power distribution network and electrical topology Download PDFInfo
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- CN116047173A CN116047173A CN202211545483.4A CN202211545483A CN116047173A CN 116047173 A CN116047173 A CN 116047173A CN 202211545483 A CN202211545483 A CN 202211545483A CN 116047173 A CN116047173 A CN 116047173A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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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
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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
- Y02E60/13—Energy storage using capacitors
Abstract
The invention discloses a device, a method and an electrical topology for rapidly detecting the capacitance value, stored energy and internal resistance of a super capacitor for a power distribution network, wherein a test case is firstly set, and the test case comprises charging and discharging current, highest voltage, lowest voltage, nominal capacitance value of the super capacitor to be detected, charging time and cycle number; the comprehensive control management unit collects real-time voltage of the super capacitor, records discharge time and discharge current value; the comprehensive control management unit acquires charging current, highest voltage, lowest voltage and cycle times, takes an average value of the charging current, the highest voltage, the lowest voltage and the cycle times, and calculates a capacitance value of the super capacitor to be measured; the comprehensive control management unit acquires a discharge current value, records and calculates the integral area and the cycle number of the voltage and the discharge time of the discharge interval in real time, and takes the average value; the comprehensive control management unit records the voltage difference, the discharge current value and the charge-discharge cycle times between the obtaining intercept and the constant voltage charge set value at the beginning of the discharge time, and calculates the internal resistance of the super capacitor to be measured.
Description
Technical Field
The invention belongs to the technical field of super capacitor detection, and particularly relates to a device and method for rapidly detecting a super capacitor for a power distribution network and an electrical topology.
Background
The super capacitor is generally referred to as an electric double layer capacitor, and is a novel energy storage device. The double-layer capacitor is arranged between the battery and the capacitor, and compared with the battery adopting the electrochemical principle, the double-layer capacitor has the characteristics of short charging time, long service life, good temperature characteristic, energy conservation, environmental protection and the like because the charging and discharging processes of the double-layer capacitor do not involve the change of substances. The electric double layer capacitor has wide application. The power balance power supply used as a hoisting device can provide power with ultra-large current; the battery is used as a vehicle starting power supply, has higher starting efficiency and reliability than the traditional storage battery, and can completely or partially replace the traditional storage battery; the traction energy used as the vehicle can be used for producing electric automobiles, replacing the traditional internal combustion engine and reforming the existing trolley bus; can be used for military to ensure the smooth start of the tank, armored car and other war chariot (especially in cold winter), and can be used as pulse energy source of laser weapon. And can be used for energy storage energy sources of other electromechanical devices.
The electric double layer capacitor has three index parameters, namely a capacitance value, a stored energy value and an internal resistance value. Any index changes, such as a decrease in capacitance, indicating a decay in capacitance; for example, the increase of the internal resistance value directly affects the stored energy value, and enough electric quantity and acting multiplying power cannot be discharged. Therefore, the rapid detection of three indexes is particularly important for the safe and reliable operation of the whole equipment in the actual operation field, particularly in the super capacitor which is operated for a long time and the operation condition of the device.
In carrying out the above invention, the inventors found that the following problems remain in the prior art:
because the detection result needs to be obtained rapidly on site, the charging holding time cannot be set completely according to IEC standards, and the detected result has deviation, but the deviation is less than +/-5%.
Disclosure of Invention
The invention aims to provide a device, a method and an electrical topology for rapidly detecting a super capacitor for a power distribution network, so as to solve the problem that the charging retention time cannot be completely set according to IEC standards and the detected result has deviation.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a device for detecting super capacitor fast for distribution network, includes integrated control management unit, charging unit, discharge unit and is surveyed super capacitor, integrated control management unit is connected with charging unit and discharge unit control, charging unit and discharge unit's positive and negative are connected with the positive and negative pole of being surveyed super capacitor respectively.
Preferably, the intelligent control system further comprises a touch screen HMI and a printing unit, wherein the touch screen HMI is configured with a test case, the test case is configured by the touch screen HMI and downloaded to the comprehensive control management unit, the test case can input and edit various information, the various information comprises the specification, the nominal voltage, the nominal capacity, the charge-discharge current value, the charge holding time, the weight and the volume of the tested super capacitor, the optional test items comprise a capacitance value, stored energy and internal resistance, and the printing unit is arranged at the connecting end of the touch screen HMI.
Preferably, the device also comprises an emergency stop button which is arranged on the device and can be used for emergently closing all power supplies and a direct current fuse which can be used for opening all contactors.
A method for rapidly detecting super-capacitor for power distribution network comprises the following specific steps:
step one: setting a test case on the touch screen HMI according to the specification of the detected super capacitor, solidifying charge and discharge current, highest charge voltage and lowest discharge voltage, outputting an instruction to disconnect a discharge contactor and close a main contactor, and starting a test;
step two:
(1) Charging: sending a control instruction to the main contactor, starting the charging unit, starting constant-current charging, monitoring the voltage of the tested super capacitor in real time, timing, judging whether the voltage of the tested super capacitor reaches the highest voltage set by the test case, and finishing continuous charging maintaining time;
(2) And (3) discharging: a control command is sent to the main contactor, the discharging contactor is combined, the discharging unit is started, constant-current discharging is started, the voltage of the tested super capacitor is monitored in real time, and meanwhile, timing is carried out, and whether the voltage of the tested super capacitor reaches the lowest voltage set by the test case is judged;
step three: after the instruction is automatically and repeatedly executed for a plurality of times, the highest voltage, the lowest voltage, the discharge time and the integral number of each time are recorded, and the average value of the plurality of times is taken;
according to the formula
Calculating, namely sequentially outputting the capacitance value, the stored energy value and the internal resistance value of the detected super capacitor to the touch screen HMI;
step four: judging whether the capacitance value, the stored energy and the internal resistance test cycle are completed or not;
(1) If yes, performing a fifth step;
(2) If not, repeating the second step to restart until the completion;
step five: the comprehensive control management unit outputs a control instruction to break all contactors, the charging unit and the discharging unit are closed, all test values are output on the touch screen HMI to be displayed, and the detection result is printed through the printing unit.
The utility model provides an electric topology of short-term test super capacitor device for distribution network which characterized in that: the system comprises a comprehensive control management unit, a main contactor, a discharge contactor, a direct-current fuse, a current Hall sensor, a tapping busbar, a charging unit, an emergency stop button, a touch screen HMI, a direct-current power supply module, a miniature circuit breaker, an operation indicator lamp, a super capacitor monomer to be tested and/or a module;
the comprehensive control management unit is connected with the equipment to form the whole detection device;
the integrated control management unit is connected with the main contactor and is used for outputting a switching control signal to the main contactor and receiving a feedback signal thereof;
the integrated control management unit is connected with the discharge contactor and is used for outputting a switching control signal to the discharge contactor and receiving a feedback signal thereof;
the comprehensive control management unit is connected with the current Hall sensor and is used for collecting current values during charging and discharging;
the comprehensive control management unit is connected with the operation appointed lamp and is used for observing the working state of the detection device;
the comprehensive control management unit is connected with the direct current power supply module, and the direct current power supply module provides working power for the comprehensive control management unit;
the comprehensive control management unit is connected with the emergency stop button and receives a feedback signal of the emergency stop button;
the comprehensive control management unit communicates with the charging unit through RS485 and sends the highest voltage, the lowest voltage and the charging current instructions to the charging unit;
the comprehensive control management unit is in interactive communication with the touch screen HMI through RS485 and receives test case parameters and operation instructions from the touch screen HMI;
the direct current fuse is arranged between the main contactor and the charging unit, and once large current impact occurs, the direct current fuse is quickly fused, so that the comprehensive control management unit is protected.
The invention has the technical effects and advantages that: according to the test result and the operation time, a field engineer can judge whether the capacity of the current super capacitor module for standby electricity is attenuated, whether the internal resistance is increased or not and whether the module fails or not, and the device for rapidly detecting the super capacitor value, storing energy and internal resistance for the power distribution network can rapidly and accurately assist the field engineer to determine whether the super capacitor module for standby electricity can meet the power-down protection requirements of on-site operation standby electricity and loads or not, can analyze the operation life cycle of the super capacitor, can accurately make a standing book and make a replacement plan. If serious attenuation is found, the new backup super capacitor module is immediately replaced so as to ensure the safety of power distribution operation.
Drawings
FIG. 1 illustrates an apparatus, method and electrical topology for fast detecting super-capacitors for a power distribution network in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the function of a supercapacitor integrated control management unit according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for rapidly detecting a super capacitor for a power distribution network according to an embodiment of the present invention;
fig. 4 is a block diagram of a device for rapidly detecting super capacitors for a power distribution network according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a device for rapidly detecting super-capacitors for a power distribution network, which is shown in the figure, and is characterized in that: the device comprises a comprehensive control management unit, a charging unit, a discharging unit and a tested super capacitor, wherein the comprehensive control management unit is in control connection with the charging unit and the discharging unit, the positive electrode and the negative electrode of the charging unit and the discharging unit are respectively connected with the positive electrode and the negative electrode of the tested super capacitor, the device further comprises a touch screen HMI and a printing unit, a test case is configured on the touch screen HMI, the test case is configured on the comprehensive control management unit, the test case can input and edit various information, the various information comprises the specification, the nominal voltage, the nominal capacity, the charging and discharging current value, the charging and holding time, the weight and the volume of the tested super capacitor, an optional test item comprises a capacitance value, stored energy and internal resistance, and the connecting end of the touch screen HMI is provided with the printing unit and further comprises a emergency stop button which is arranged on the device and can emergently shut down all power supplies and a direct current fuse which can disconnect all contactors.
A method for rapidly detecting super-capacitor for power distribution network comprises the following specific steps:
step one: setting a test case on the touch screen HMI according to the specification of the detected super capacitor, solidifying charge and discharge current, highest charge voltage and lowest discharge voltage, outputting an instruction to disconnect a discharge contactor and close a main contactor, and starting a test;
step two:
(1) Charging: sending a control instruction to the main contactor, starting the charging unit, starting constant-current charging, monitoring the voltage of the tested super capacitor in real time, timing, judging whether the voltage of the tested super capacitor reaches the highest voltage set by the test case, and finishing continuous charging maintaining time;
(2) And (3) discharging: a control command is sent to the main contactor, the discharging contactor is combined, the discharging unit is started, constant-current discharging is started, the voltage of the tested super capacitor is monitored in real time, and meanwhile, timing is carried out, and whether the voltage of the tested super capacitor reaches the lowest voltage set by the test case is judged;
step three: after the instruction is automatically and repeatedly executed for a plurality of times, the highest voltage, the lowest voltage, the discharge time and the integral number of each time are recorded, and the average value of the plurality of times is taken;
according to the formula
Calculating, namely sequentially outputting the capacitance value, the stored energy value and the internal resistance value of the detected super capacitor to the touch screen HMI;
step four: judging whether the capacitance value, the stored energy and the internal resistance test cycle are completed or not;
(1) If yes, performing a fifth step;
(2) If not, repeating the second step to restart until the completion;
step five: the comprehensive control management unit outputs a control instruction to break all contactors, the charging unit and the discharging unit are closed, all test values are output on the touch screen HMI to be displayed, and the detection result is printed through the printing unit.
The utility model provides an electric topology of short-term test super capacitor device for distribution network which characterized in that: the system comprises a comprehensive control management unit, a main contactor, a discharge contactor, a direct-current fuse, a current Hall sensor, a tapping busbar, a charging unit, an emergency stop button, a touch screen HMI, a direct-current power supply module, a miniature circuit breaker, an operation indicator lamp, a super capacitor monomer to be tested and/or a module;
the comprehensive control management unit is connected with the equipment to form the whole detection device;
the integrated control management unit is connected with the main contactor and is used for outputting a switching control signal to the main contactor and receiving a feedback signal thereof;
the integrated control management unit is connected with the discharge contactor and is used for outputting a switching control signal to the discharge contactor and receiving a feedback signal thereof;
the comprehensive control management unit is connected with the current Hall sensor and is used for collecting current values during charging and discharging;
the comprehensive control management unit is connected with the operation appointed lamp and is used for observing the working state of the detection device;
the comprehensive control management unit is connected with the direct current power supply module, and the direct current power supply module provides working power for the comprehensive control management unit;
the comprehensive control management unit is connected with the emergency stop button and receives a feedback signal of the emergency stop button;
the comprehensive control management unit communicates with the charging unit through RS485 and sends the highest voltage, the lowest voltage and the charging current instructions to the charging unit;
the comprehensive control management unit is in interactive communication with the touch screen HMI through RS485 and receives test case parameters and operation instructions from the touch screen HMI;
the direct current fuse is arranged between the main contactor and the charging unit, and once large current impact occurs, the direct current fuse is quickly fused, so that the comprehensive control management unit is protected.
The working principle super capacitor is used as a standby power supply of a power distribution terminal, a field is operated in a power distribution automation ring main unit, a commissioned super capacitor module is pulled out, nameplate information of the commissioned super capacitor module is checked, rated parameters are obtained, nominal voltage and capacitance values of the tested super capacitor module are recorded, the nominal voltage and capacitance values of the tested super capacitor module are set as test cases through a device touchable HMI, the test case parameters further comprise charging current, interval time and charging holding time, the anode and the cathode of the tested super capacitor are connected with the anode and the cathode of the device, the test case is loaded under a comprehensive control management unit, the device touchable HMI starts testing, the comprehensive control management unit sends a closing instruction to a main contactor, a charging unit is started, constant current charging is started to the tested super capacitor module, and the comprehensive control management unit monitors the voltage of the tested super capacitor module in real time and counts time.
When the voltage of the tested super capacitor module reaches the rated voltage set by the test case, namely the highest voltage, and the set continuous charging and holding time is completed, the comprehensive control management unit sends a control command to divide the main contactor, closes the discharging loop contactor, starts the discharging unit, starts constant current discharging, monitors the tested super capacitor voltage in real time, counts time simultaneously, when the voltage of the tested super capacitor module reaches the lowest voltage set by the test case, calculates the capacitance value of the tested super capacitor module through a formula, outputs the capacitance value to the HMI for displaying, automatically outputs the command of the dividing discharging loop contactor and the closing charging main contactor through an interval time after the comprehensive control management unit is displayed, starts the second round of detection, calculates the stored energy value of the tested super capacitor module through the formula, automatically outputs the command of the dividing discharging loop contactor and the closing charging main contactor again after the output to the HMI for displaying, starts the third round of detection, calculates the internal resistance of the tested super capacitor module through the formula, outputs the command to the HMI for displaying, closes the charging unit and outputs the control command to the main contactor after all the discharging values are displayed through the test unit, and prints the test results after the test values are printed out.
According to the test result and the operation time, a field engineer can judge whether the capacity of the current super capacitor module for standby electricity is attenuated, whether the internal resistance is increased or not and whether the module fails or not. If serious attenuation is found, the new backup super capacitor module is immediately replaced so as to ensure the safety of power distribution operation.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (5)
1. Device for rapidly detecting super capacitor for power distribution network, which is characterized in that: the integrated control management unit is in control connection with the charging unit and the discharging unit, and the positive electrode and the negative electrode of the charging unit and the discharging unit are respectively connected with the positive electrode and the negative electrode of the detected super capacitor.
2. The device for rapidly detecting super-capacitors for a power distribution network according to claim 1, wherein: the intelligent control system comprises a touch screen HMI and a printing unit, wherein the touch screen HMI is provided with a test case, the test case is configured through the touch screen HMI and is downloaded to a comprehensive control management unit, the test case can input and edit various information, the various information comprises the specification, the nominal voltage, the nominal capacity, the charge-discharge current value, the charge-hold time, the weight and the volume of a tested super capacitor, the optional test items comprise a capacitance value, stored energy and internal resistance, and the printing unit is arranged at the connecting end of the touch screen HMI.
3. The device for rapidly detecting super-capacitors for a power distribution network according to claim 1, wherein: the device also comprises an emergency stop button which is arranged on the device and can be used for emergently closing all power supplies and a direct current fuse which can be used for opening all contactors.
4. The method for rapidly detecting the super capacitor for the power distribution network according to claim 1, which comprises the following specific steps:
step one: setting a test case on the touch screen HMI according to the specification of the detected super capacitor, solidifying charge and discharge current, highest charge voltage and lowest discharge voltage, outputting an instruction to disconnect a discharge contactor and close a main contactor, and starting a test;
step two:
(1) Charging: sending a control instruction to the main contactor, starting the charging unit, starting constant-current charging, monitoring the voltage of the tested super capacitor in real time, timing, judging whether the voltage of the tested super capacitor reaches the highest voltage set by the test case, and finishing continuous charging maintaining time;
(2) And (3) discharging: a control command is sent to the main contactor, the discharging contactor is combined, the discharging unit is started, constant-current discharging is started, the voltage of the tested super capacitor is monitored in real time, and meanwhile, timing is carried out, and whether the voltage of the tested super capacitor reaches the lowest voltage set by the test case is judged;
step three: after the instruction is automatically and repeatedly executed for a plurality of times, the highest voltage, the lowest voltage, the discharge time and the integral number of each time are recorded, and the average value of the plurality of times is taken;
according to the formula
Calculating, namely sequentially outputting the capacitance value, the stored energy value and the internal resistance value of the detected super capacitor to the touch screen HMI;
step four: judging whether the capacitance value, the stored energy and the internal resistance test cycle are completed or not;
(1) If yes, performing a fifth step;
(2) If not, repeating the second step to restart until the completion;
step five: the comprehensive control management unit outputs a control instruction to break all contactors, the charging unit and the discharging unit are closed, all test values are output on the touch screen HMI to be displayed, and the detection result is printed through the printing unit.
5. The electrical topology of a power distribution network rapid detection supercapacitor device based on claim 1, wherein: the system comprises a comprehensive control management unit, a main contactor, a discharge contactor, a direct-current fuse, a current Hall sensor, a tapping busbar, a charging unit, an emergency stop button, a touch screen HMI, a direct-current power supply module, a miniature circuit breaker, an operation indicator lamp, a super capacitor monomer to be tested and/or a module;
the comprehensive control management unit is connected with the equipment to form the whole detection device;
the integrated control management unit is connected with the main contactor and is used for outputting a switching control signal to the main contactor and receiving a feedback signal thereof;
the integrated control management unit is connected with the discharge contactor and is used for outputting a switching control signal to the discharge contactor and receiving a feedback signal thereof;
the comprehensive control management unit is connected with the current Hall sensor and is used for collecting current values during charging and discharging;
the comprehensive control management unit is connected with the operation appointed lamp and is used for observing the working state of the detection device;
the comprehensive control management unit is connected with the direct current power supply module, and the direct current power supply module provides working power for the comprehensive control management unit;
the comprehensive control management unit is connected with the emergency stop button and receives a feedback signal of the emergency stop button;
the comprehensive control management unit communicates with the charging unit through RS485 and sends the highest voltage, the lowest voltage and the charging current instructions to the charging unit;
the comprehensive control management unit is in interactive communication with the touch screen HMI through RS485 and receives test case parameters and operation instructions from the touch screen HMI;
the direct current fuse is arranged between the main contactor and the charging unit, and once large current impact occurs, the direct current fuse is quickly fused, so that the comprehensive control management unit is protected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211545483.4A CN116047173A (en) | 2022-11-28 | 2022-11-28 | Device and method for rapidly detecting super capacitor for power distribution network and electrical topology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211545483.4A CN116047173A (en) | 2022-11-28 | 2022-11-28 | Device and method for rapidly detecting super capacitor for power distribution network and electrical topology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116719669A (en) * | 2023-08-09 | 2023-09-08 | 苏州浪潮智能科技有限公司 | Super capacitor calibration method, alarm method and device and disk array card |
| CN117269837A (en) * | 2023-11-21 | 2023-12-22 | 中科院广州电子技术有限公司 | Novel capacitor multi-station leakage current comprehensive judgment method |
-
2022
- 2022-11-28 CN CN202211545483.4A patent/CN116047173A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116719669A (en) * | 2023-08-09 | 2023-09-08 | 苏州浪潮智能科技有限公司 | Super capacitor calibration method, alarm method and device and disk array card |
| CN116719669B (en) * | 2023-08-09 | 2023-11-03 | 苏州浪潮智能科技有限公司 | Super capacitor calibration method, alarm method and device and disk array card |
| CN117269837A (en) * | 2023-11-21 | 2023-12-22 | 中科院广州电子技术有限公司 | Novel capacitor multi-station leakage current comprehensive judgment method |
| CN117269837B (en) * | 2023-11-21 | 2024-02-13 | 中科院广州电子技术有限公司 | Novel capacitor multi-station leakage current comprehensive judgment method |
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