CN111884224A - Non-intrusive detection method for indoor charging of electric bicycle - Google Patents

Non-intrusive detection method for indoor charging of electric bicycle Download PDF

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Publication number
CN111884224A
CN111884224A CN202010962069.8A CN202010962069A CN111884224A CN 111884224 A CN111884224 A CN 111884224A CN 202010962069 A CN202010962069 A CN 202010962069A CN 111884224 A CN111884224 A CN 111884224A
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charging
electric bicycle
time
formula
calculating
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邓士伟
苗青
黄时
洪佳燕
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Jiangsu Zhizhen Energy Technology Co ltd
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Jiangsu Zhizhen Energy Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/68—Off-site monitoring or control, e.g. remote control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/001—Measuring real or reactive component; Measuring apparent energy
    • G01R21/002—Measuring real component
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/12—Bikes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/70—Load identification
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Abstract

The invention relates to a non-intrusive detection method for indoor charging of an electric bicycle, which comprises the following steps: step 1: respectively sampling the voltage and the current of the incoming line of the main power supply to obtain a voltage sampling sequence u and a current sampling sequence i; step 2: calculating average power increment according to the voltage sampling sequence u and the current sampling sequence i
Figure 100004_DEST_PATH_IMAGE001
And
Figure 446056DEST_PATH_IMAGE002
the time required for the mutation; and step 3: determining average power increment
Figure 901177DEST_PATH_IMAGE001
And
Figure 96666DEST_PATH_IMAGE002
whether the temperature is within a specified interval range; and 4, step 4: if it is not
Figure 388495DEST_PATH_IMAGE001
And
Figure 20333DEST_PATH_IMAGE002
if the temperature is within the specified interval range, entering the step 5; if not, the charging operation process of the electric bicycle is not carried out; and 5: calculating the slow reduction after the stable operation of the average power
Figure 100004_DEST_PATH_IMAGE003
And time consumption
Figure 279145DEST_PATH_IMAGE004
Ratio of (A to B)
Figure 100004_DEST_PATH_IMAGE005
(ii) a Step 6: calculating the ratio of slow reduction to consumption time after the third harmonic stable operation
Figure 112497DEST_PATH_IMAGE006
(ii) a And 7: and judging whether the electric bicycle is in a charging process according to a judgment formula. The invention is beneficial to monitoring the charging on/off of the electric bicycle in time and making corresponding protection measures.

Description

Non-intrusive detection method for indoor charging of electric bicycle
Technical Field
The invention relates to a non-intrusive detection method for indoor charging of an electric bicycle, and belongs to the technical field of charging of electric bicycles.
Background
In recent years, with the increase of the types of modern household appliances and the popularization of high-power appliances, electrical fire accidents are in a remarkably rising situation, and serious fire accidents are easily caused. The national institute clearly emphasizes that the security risk prevention and control of facilities in major projects such as nuclear power engineering, electric power engineering and the like are important, and the public security department and the emergency management department issue intelligent fire-fighting proposals for many times.
The electric bicycle is a very convenient vehicle for people all the time, the problem of electricity utilization safety of residents is increasingly highlighted along with the increase of loads, and fire accidents caused by electricity utilization are frequent, wherein most of the fire accidents are caused by the charging of the electric bicycle, especially the charging of the indoor electric bicycle. The non-intrusive detection method for indoor charging of the electric bicycle can well solve the hidden trouble. The method can quickly and effectively identify the charging on and off of the electric bicycle, and effectively prevent fire caused by the overcharge of the electric bicycle.
The existing research and literature only identifies the load of residents, but no literature provides a criterion for accurately, effectively and quickly identifying the charging load of the electric bicycle, and the charging of the electric bicycle is judged to be started and closed according to the head and tail detection of the charging active power and the third harmonic current of the electric bicycle.
Disclosure of Invention
In order to solve the technical problems, the invention provides a non-intrusive detection method for indoor charging of an electric bicycle, which has the following specific technical scheme: the method comprises the following steps:
step 1: respectively sampling the voltage and the current of the incoming line of the main power supply to obtain a voltage sampling sequence u and a current sampling sequence i;
step 2: calculating average power increment according to the voltage sampling sequence u and the current sampling sequence i
Figure 811779DEST_PATH_IMAGE001
And the time required for mutation
Figure 930519DEST_PATH_IMAGE002
；
And step 3: determining average power increment
Figure 913518DEST_PATH_IMAGE001
And
Figure 698941DEST_PATH_IMAGE002
whether the temperature is within a specified interval range;
and 4, step 4: if it is not
Figure 450996DEST_PATH_IMAGE001
And
Figure 804617DEST_PATH_IMAGE002
if the temperature is within the specified interval range, entering the step 5; if not, the charging operation process of the electric bicycle is not carried out;
and 5: calculating the slow reduction after the stable operation of the average power
Figure 524180DEST_PATH_IMAGE003
And time consumption
Figure 129605DEST_PATH_IMAGE004
Ratio of (A to B)
Figure 985434DEST_PATH_IMAGE005
；
Step 6: calculating the slow reduction after the third harmonic stable operation
Figure 509956DEST_PATH_IMAGE006
And time consumption
Figure 201969DEST_PATH_IMAGE007
Ratio of (A to B)
Figure 332124DEST_PATH_IMAGE008
；
And 7: according to
Figure 58771DEST_PATH_IMAGE005
，
Figure 754195DEST_PATH_IMAGE008
，
Figure 651612DEST_PATH_IMAGE004
，
Figure 129998DEST_PATH_IMAGE007
The formed judgment formula judges whether the charging process of the electric bicycle is performed.
Further, in step 3
Figure 39048DEST_PATH_IMAGE009
The interval of (a) is in the range of 100W-400W,
Figure 30007DEST_PATH_IMAGE010
in the interval range of 0.1S-1S.
Further, calculating the average power increment in step 2
Figure 962191DEST_PATH_IMAGE011
The calculation formula of (2) is as follows:
Figure 306585DEST_PATH_IMAGE012
in the formula
Figure 460354DEST_PATH_IMAGE013
In order to obtain steady-state active power before sudden change,
Figure 435264DEST_PATH_IMAGE014
the maximum active power after mutation.
Further, the time required for the mutation in step 2
Figure 917060DEST_PATH_IMAGE015
Is calculated as follows
Figure 192708DEST_PATH_IMAGE016
，
In the formula
Figure 748455DEST_PATH_IMAGE017
The time corresponding to the steady-state active power before the sudden change,
Figure 222161DEST_PATH_IMAGE018
the time corresponding to the maximum active power after mutation.
Further, as described in step 5
Figure 50309DEST_PATH_IMAGE019
The calculation formula of (a) is as follows:
Figure 674188DEST_PATH_IMAGE020
，
Figure 412337DEST_PATH_IMAGE021
，
Figure 181579DEST_PATH_IMAGE022
，
in the formula
Figure 310072DEST_PATH_IMAGE023
，
Figure 799959DEST_PATH_IMAGE024
The steady active power and the corresponding time before the gradual descending and sudden change of the electric bicycle,
Figure 517248DEST_PATH_IMAGE025
，
Figure 4861DEST_PATH_IMAGE026
the active power and the corresponding time after the slow drop sudden change.
Further, as described in step 6
Figure 682967DEST_PATH_IMAGE027
The calculation formula of (a) is as follows:
Figure 166426DEST_PATH_IMAGE028
，
Figure 754533DEST_PATH_IMAGE029
，
Figure 209785DEST_PATH_IMAGE030
，
in the formula (I), the compound is shown in the specification,
Figure 562138DEST_PATH_IMAGE031
，
Figure 269194DEST_PATH_IMAGE032
is the steady state third harmonic current before the gradual descending sudden change of the electric bicycle and the corresponding time,
Figure 102021DEST_PATH_IMAGE033
，
Figure 915125DEST_PATH_IMAGE034
the third harmonic current and the corresponding time after the slow drop mutation.
Further, the judgment formula in step 7 is
Figure 708769DEST_PATH_IMAGE035
，
Figure 344149DEST_PATH_IMAGE036
。
The invention has the beneficial effects that: when the electric bicycle is just charged, the charging current and the consumed charging power are both large, along with the charging, the electric quantity of the battery of the electric bicycle is gradually increased, the charging current and the consumed charging power are both gradually decreased, and finally trickle charging is realized. The non-intrusive detection method can accurately, effectively and quickly identify the start and the end of the starting of the electric bicycle, and the identification result is helpful for property management personnel or relevant management departments to dispatch the management departments to monitor the charging starting and closing of the electric bicycle in time, so that corresponding protection measures are taken; the monitoring of the charging behavior of the electric bicycle can effectively avoid possible fire safety accidents.
Drawings
FIG. 1 is a flow chart of the non-intrusive detection method for indoor charging of an electric bicycle according to the present invention,
fig. 2 is a charging active power diagram of an electric bicycle according to an embodiment of the present invention,
fig. 3 is a third harmonic current diagram for charging an electric bicycle according to an embodiment of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, the non-intrusive detection method for indoor charging of the electric bicycle of the present invention comprises the following steps:
step 1: respectively sampling the voltage and the current of the incoming line of the main power supply to obtain a voltage sampling sequence u and a current sampling sequence i; the voltage sampling sequence u and the current sampling sequence i are sampling sequences subjected to preprocessing such as filtering and denoising, and the sampling frequency of the voltage sampling sequence u and the sampling frequency of the current sampling sequence i are both 500Hz-2 kH.
Step 2: calculating the average power increment and the time required for mutation according to the voltage sampling sequence u and the current sampling sequence i; the calculated average power increment
Figure 687275DEST_PATH_IMAGE037
The calculation formula of (2) is as follows:
Figure 625275DEST_PATH_IMAGE038
the calculation formula of the time required for mutation is as follows:
Figure 765269DEST_PATH_IMAGE039
，
in the formula
Figure 382503DEST_PATH_IMAGE040
In order to obtain steady-state active power before sudden change,
Figure 534129DEST_PATH_IMAGE041
in order to obtain the maximum active power after the sudden change,
Figure 33244DEST_PATH_IMAGE042
the time corresponding to the steady-state active power before the sudden change,
Figure 581906DEST_PATH_IMAGE043
the time corresponding to the maximum active power after mutation.
As shown in FIG. 2, during the charging process of the electric bicycle, the active power of the electric bicycle is suddenly changed to the steady state
Figure 434455DEST_PATH_IMAGE040
=0.73W, corresponding to a time of
Figure 752173DEST_PATH_IMAGE042
=3.025Min, maximum active power after mutation
Figure 156609DEST_PATH_IMAGE041
=243W, corresponding to a time of
Figure 943300DEST_PATH_IMAGE043
=3.03Min, calculating the average power increment in the charging process of the electric bicycle
Figure 848808DEST_PATH_IMAGE044
，
And time of mutation
Figure 99661DEST_PATH_IMAGE045
。
And step 3: determining average power increment
Figure 815944DEST_PATH_IMAGE046
And
Figure 342128DEST_PATH_IMAGE047
whether the temperature is within a specified interval range;
Figure 661114DEST_PATH_IMAGE048
the interval of (a) is in the range of 100W-400W,
Figure 907418DEST_PATH_IMAGE047
the interval range is 0.1S-1S, the charging process of the electric bicycle meets the requirement that the average power increment range is 100W-400W and the time required by sudden change is met0.1S~1S。
And 4, step 4: judgment of
Figure 840608DEST_PATH_IMAGE049
And
Figure 398628DEST_PATH_IMAGE047
all within the predetermined interval range, the process proceeds to step 5.
And 5: calculating the slow reduction after the stable operation of the average power
Figure 458988DEST_PATH_IMAGE050
And time consumption
Figure 809067DEST_PATH_IMAGE051
Ratio of (A to B)
Figure 726207DEST_PATH_IMAGE052
(ii) a The above-mentioned
Figure 974786DEST_PATH_IMAGE050
、
Figure 760208DEST_PATH_IMAGE051
And
Figure 840160DEST_PATH_IMAGE052
the calculation formula of (a) is as follows:
Figure 131464DEST_PATH_IMAGE053
，
Figure 791640DEST_PATH_IMAGE054
，
Figure 521698DEST_PATH_IMAGE055
，
in the formula (I), the compound is shown in the specification,
Figure 128260DEST_PATH_IMAGE056
，
Figure 42996DEST_PATH_IMAGE057
is the steady active power of the electric bicycle before the gradual descending and sudden change and the corresponding time,
Figure 62904DEST_PATH_IMAGE058
，
Figure 3178DEST_PATH_IMAGE059
the active power and the corresponding time after the slow drop sudden change.
As shown in fig. 2: steady-state active power before sudden change of charging slow drop of electric bicycle and corresponding time of steady-state active power
Figure 916777DEST_PATH_IMAGE060
=263W，
Figure 877779DEST_PATH_IMAGE061
=19.47Min, active power after slow descent and corresponding time thereof
Figure 57088DEST_PATH_IMAGE062
=56W，
Figure 988004DEST_PATH_IMAGE059
=95.2Min, then
Figure 162633DEST_PATH_IMAGE063
=263-56=207W，
Figure 701062DEST_PATH_IMAGE064
=95.2-19.47=75.73Min, calculated to obtain
Figure 823126DEST_PATH_IMAGE065
=2.714。
Step 6: calculating the slow reduction after the third harmonic stable operation
Figure 433099DEST_PATH_IMAGE066
And time consumption
Figure 134339DEST_PATH_IMAGE067
Ratio of (A to B)
Figure 296199DEST_PATH_IMAGE068
(ii) a Said in step 6
Figure 777996DEST_PATH_IMAGE069
、
Figure 863763DEST_PATH_IMAGE070
And
Figure 872039DEST_PATH_IMAGE068
the calculation formula of (a) is as follows:
Figure 80167DEST_PATH_IMAGE071
，
Figure 721364DEST_PATH_IMAGE072
，
Figure 797773DEST_PATH_IMAGE073
，
in the formula (I), the compound is shown in the specification,
Figure 535922DEST_PATH_IMAGE074
，
Figure 587055DEST_PATH_IMAGE075
is the steady state third harmonic current before the gradual descending sudden change of the electric bicycle and the corresponding time,
Figure 182726DEST_PATH_IMAGE076
，
Figure 672613DEST_PATH_IMAGE077
the third harmonic current and the corresponding time after the slow drop mutation.
As shown in fig. 3: steady-state third harmonic current before sudden change of charging slow drop of electric bicycle and corresponding time thereof
Figure 202952DEST_PATH_IMAGE074
=0.748A，
Figure 877515DEST_PATH_IMAGE075
=19.02Min, third harmonic current after slow drop and corresponding time
Figure 821201DEST_PATH_IMAGE076
=0.23A，
Figure 786883DEST_PATH_IMAGE077
=95.53Min, then
Figure 358678DEST_PATH_IMAGE078
=0.748-0.23=0.518A，
Figure 17193DEST_PATH_IMAGE079
=95.53-19.02 =76.51Min, then
Figure 182595DEST_PATH_IMAGE080
=0.0068。
And 7: according to
Figure 935656DEST_PATH_IMAGE065
，
Figure 378270DEST_PATH_IMAGE080
，
Figure 725462DEST_PATH_IMAGE081
，
Figure 50264DEST_PATH_IMAGE070
The formed judgment formula judges whether the charging process of the electric bicycle is carried out or not, and the judgment formula is
Figure 341437DEST_PATH_IMAGE082
，
Figure 435295DEST_PATH_IMAGE083
. Computing
Figure 684880DEST_PATH_IMAGE084
And
Figure 434661DEST_PATH_IMAGE085
all satisfy the conditionAnd judging that the electric appliance is a charging process of the electric bicycle.
In conclusion, the method can accurately, effectively and quickly identify the start and the end of the starting of the electric bicycle, and the identification result is helpful for property management personnel or related management departments to dispatch the electric bicycle to monitor the charging opening and closing of the electric bicycle in time, so that corresponding protection measures are taken.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above examples are not intended to limit the present invention in any way, and all technical solutions obtained by means of equivalents or equivalent changes fall within the protection scope of the present invention.

Claims (7)

1. A non-intrusive detection method for indoor charging of an electric bicycle is characterized by comprising the following steps:
step 1: respectively sampling the voltage and the current of the incoming line of the main power supply to obtain a voltage sampling sequence u and a current sampling sequence i;
step 2: calculating average power increment according to the voltage sampling sequence u and the current sampling sequence i
Figure DEST_PATH_IMAGE001
And the time required for mutation
Figure 349547DEST_PATH_IMAGE002
；
And step 3: determining average power increment
Figure 563491DEST_PATH_IMAGE001
And
Figure 62606DEST_PATH_IMAGE002
whether the temperature is within a specified interval range;
and 4, step 4: if it is not
Figure 548950DEST_PATH_IMAGE001
And
Figure 198238DEST_PATH_IMAGE002
if the temperature is within the specified interval range, entering the step 5; if not, the charging operation process of the electric bicycle is not carried out;
and 5: calculating the slow reduction after the stable operation of the average power
Figure DEST_PATH_IMAGE003
And time consumption
Figure 47114DEST_PATH_IMAGE004
Ratio of (A to B)
Figure DEST_PATH_IMAGE005
；
Step 6: calculating the slow reduction after the third harmonic stable operation
Figure 858075DEST_PATH_IMAGE006
And time consumption
Figure DEST_PATH_IMAGE007
Ratio of (A to B)
Figure 26189DEST_PATH_IMAGE008
；
And 7: according to
Figure 728435DEST_PATH_IMAGE005
，
Figure 979288DEST_PATH_IMAGE008
，
Figure 492309DEST_PATH_IMAGE004
，
Figure 953246DEST_PATH_IMAGE007
The formed judgment formula judges whether the charging process of the electric bicycle is performed.
2. The non-intrusive method of detecting indoor charging of electric bicycles of claim 1, wherein: in step 3
Figure DEST_PATH_IMAGE009
The interval of (a) is in the range of 100W-400W,
Figure 475494DEST_PATH_IMAGE010
in the interval range of 0.1S-1S.
3. The non-intrusive method of detecting indoor charging of electric bicycles of claim 1, wherein: calculating the average power increment as described in step 2
Figure DEST_PATH_IMAGE011
The calculation formula of (2) is as follows:
Figure 174329DEST_PATH_IMAGE012
in the formula
Figure DEST_PATH_IMAGE013
In order to obtain steady-state active power before sudden change,
Figure 376027DEST_PATH_IMAGE014
the maximum active power after mutation.
4. The non-intrusive method of detecting indoor charging of electric bicycles of claim 1, wherein: time required for mutation in step 2
Figure DEST_PATH_IMAGE015
The calculation formula of (a) is as follows,
Figure 261944DEST_PATH_IMAGE016
in the formula
Figure DEST_PATH_IMAGE017
The time corresponding to the steady-state active power before the sudden change,
Figure 978096DEST_PATH_IMAGE018
the time corresponding to the maximum active power after mutation.
5. The non-intrusive method of detecting indoor charging of electric bicycles of claim 1, wherein: said in step 5
Figure DEST_PATH_IMAGE019
The calculation formula of (a) is as follows:
Figure 279DEST_PATH_IMAGE020
，
Figure DEST_PATH_IMAGE021
，
Figure 107299DEST_PATH_IMAGE022
，
in the formula
Figure DEST_PATH_IMAGE023
，
Figure 746091DEST_PATH_IMAGE024
For steady active power before gradual descent and sudden change of the electric bicycle and corresponding time
Figure DEST_PATH_IMAGE025
，
Figure 610142DEST_PATH_IMAGE026
The active power and the corresponding time after the slow drop sudden change.
6. The non-intrusive indoor charging of electric bicycles of claim 1The formula detection method is characterized in that: said in step 6
Figure DEST_PATH_IMAGE027
、
Figure 752410DEST_PATH_IMAGE028
And
Figure DEST_PATH_IMAGE029
the calculation formula of (a) is as follows:
Figure 558561DEST_PATH_IMAGE030
，
Figure DEST_PATH_IMAGE031
，
Figure 422000DEST_PATH_IMAGE032
，
in the formula (I), the compound is shown in the specification,
Figure DEST_PATH_IMAGE033
，
Figure 824162DEST_PATH_IMAGE034
is the steady state third harmonic current before the gradual descending sudden change of the electric bicycle and the corresponding time,
Figure DEST_PATH_IMAGE035
，
Figure 352095DEST_PATH_IMAGE036
the third harmonic current and the corresponding time after the slow drop mutation.
7. The non-intrusive method of detecting indoor charging of electric bicycles of claim 1, wherein: the judgment formula in the step 7 is
Figure DEST_PATH_IMAGE037
，
Figure 329147DEST_PATH_IMAGE038
。
CN202010962069.8A 2020-09-14 2020-09-14 Non-intrusive detection method for indoor charging of electric bicycle Pending CN111884224A (en)

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CN116215295B (en) * 2023-03-31 2023-09-19 广东健怡投资有限公司 Charging pile monitoring and early warning method, device, equipment and storage medium

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