CN108649622B - Electric automobile integrated safety precaution protection system that charges - Google Patents
Electric automobile integrated safety precaution protection system that charges Download PDFInfo
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- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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Abstract
The invention discloses an electric vehicle charging integrated safety early warning protection scheme, which comprises a vehicle pile network charging related information acquisition and storage part, a safety early warning protection part and a safety early warning protection part, wherein the vehicle pile network charging related information acquisition and storage part is used for acquiring vehicle pile network charging state information, contains various fault early warning information and carries out corresponding storage; the pile network short-term integrated fault logic judgment processing part is used for finishing logic judgment of short-term integrated charging fault information and carrying out corresponding message pushing and fault processing operations; and the vehicle pile network medium-long term integrated early warning processing part is used for finishing vehicle pile network integrated safety state evaluation, giving early warning grades, and finishing fault information pushing and fault processing operations. The early warning protection scheme fully considers the short-term and medium-term fault early warning in the charging process of the electric automobile, predicts the safety fault or hidden danger to the maximum extent, provides a reasonable processing scheme and solves the problem as early as possible.
Description
Technical Field
The invention relates to an electric automobile charging integrated safety early warning protection scheme, and belongs to the technical field of electric automobile charging protection.
Background
With the gradual exhaustion of fossil fuels and the demand of environmental protection, new energy vehicles, i.e., electric vehicles, have been developed on a large scale, and their own safety problems have yet to be improved due to the development of the related technical level of electric vehicles. In recent years, charging and ignition of electric automobiles and some major traffic safety accidents are caused, so that people are more and more worried about the operation safety of vehicles and the life and property safety of passengers, and a set of complete protection scheme is lacked in the field of electric automobile charging protection at the present stage. The existing protection schemes mostly aim at the state monitoring of a Battery Management System (BMS) of an electric automobile and a charging pile, faults are eliminated in a short period, long-term equipment safety level assessment is lacked, and the hidden danger of charging accidents of the electric automobile is buried. Therefore, a set of complete electric vehicle charging safety protection scheme is urgently needed for the requirement of electric vehicle charging safety so as to improve the charging safety and promote the better large-scale development of the electric vehicle.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an integrated safety early warning protection scheme for charging of an electric automobile.
The purpose of the invention is realized by the following technical scheme: a charging integrated safety early warning protection system scheme of an electric vehicle comprises a vehicle pile network charging related information acquisition and storage part, charging and fault information acquired by a vehicle battery management system is transmitted to a charging station monitoring management system through CAN bus communication, and then is transmitted to a charging operation management platform server through the Internet or the Ethernet; charging and fault information acquired by the charging pile monitoring and management system is sent to the charging station monitoring and management system in a CAN bus or 2/3/4G mode, and then is sent to a charging operation management platform server through the Internet or the Ethernet; acquiring relevant charging state information and fault information of a distribution area through a power distribution management system of the distribution area where the charging station is located, and uploading the charging state information and the fault information to a charging operation management platform server in an optical fiber communication or wireless communication mode; and storing the corresponding information;
the pile network short-term integrated fault logic judgment processing part is used for finishing logic judgment of short-term charging fault information according to charging information received by the platform server in real time, carrying out corresponding message pushing, and feeding fault processing operation back to a switch used for cutting off communication of each battery management system, the charging pile management system and the power distribution management system;
and the vehicle pile network medium-long term integrated early warning processing part is used for finishing vehicle pile network integrated safety state evaluation, giving early warning grade, finishing fault information pushing and feeding fault processing operation feedback to the vehicle pile network system to remind the vehicle pile network system of low health state to overhaul and eliminate hidden danger in time according to charging history information stored in the vehicle pile network stored by the platform.
Preferably, the stub network short-term integrated fault logic judgment processing part comprises: and the method comprises the steps of inputting related information of the short-term charging of the pile network (pile network fault code information, pile network on-off state data and pile network operation data), and integrally judging flow processing and fault warning and fault processing output of the short-term fault of the pile network. The short-term charging related fault and operation information is input, integrated judgment and processing are carried out, and finally alarm is output.
Preferably, the integrated judgment process for the short-term fault of the vehicle pile network comprises fault topology association analysis, fault logic judgment and integrated fault treatment, wherein the fault topology association is to provide an integrated logic judgment basis for the fault, and the fault treatment is to output an integrated judgment result.
Preferably, the fault topology association analysis includes the following steps: acquiring a short-term fault code of a vehicle pile network, judging the type of the short-term fault code, and acquiring a charging pile logical relationship connected with a vehicle and a power distribution station logical relationship connected with the charging pile if the short-term fault code of the vehicle battery management system is acquired; if the short-term fault code of the charging pile is obtained, then the logical relation of the vehicles connected with the charging pile is obtained, and the logical relation of the distribution area where the charging pile is located is obtained; and if the short-term fault code of the regional power distribution network is acquired, acquiring the logical relation of the charging piles connected with the power distribution station area, and acquiring the logical relation of the vehicles connected with the charging piles in the power distribution station area.
Preferably, the fault logic judgment includes vehicle fault logic judgment, charging pile fault logic judgment and distribution network station area fault logic judgment, and the vehicle fault logic judgment process includes the following steps:
collecting the state and the charging current of a charging connector, judging whether the connector is disconnected and the charging current is smaller than a no-current threshold value, if the connector is disconnected, indicating that the short-term fault of the vehicle is removed, and turning to a fault processing program; if the non-disconnected connector indicates that the short-term fault of the vehicle is not removed and a charging pile removing instruction is sent out, the on-off state and the charging current of the charging pile are collected circularly, three-second judgment is delayed, and whether the charging pile is disconnected or not is judged and the charging current is smaller than a no-current threshold value is judged; if the charging pile is disconnected from the steering fault processing program, otherwise, a fault removing instruction of the distribution area is sent, and then fault processing is carried out;
the charging pile fault logic judgment process comprises the following steps:
collecting the on-off state and the charging current of the charging pile, judging whether the charging pile is disconnected and the charging current is smaller than a no-current threshold value, if the disconnection indicates that the pile fault is removed, turning to a fault processing program, otherwise, sending a fault removing instruction of a distribution area, and then performing fault processing;
the power distribution station fault logic judgment process comprises the following steps: collecting the switch state and the charging current of the distribution area, judging whether the switch of the distribution area is disconnected and the charging current is smaller than a no-current threshold value, if the disconnection indicates that the fault of the distribution area is removed, turning to a fault processing program, otherwise, sending a fault removal instruction to the high-voltage side of the distribution area, and then performing fault processing.
Preferably, the short-term integrated fault handling process of the pile network comprises the following steps: and judging whether the operation instruction is a fault removal instruction or an alarm instruction, if the operation instruction is the alarm signal instruction, sending an acoustic-optical-electrical fault alarm signal, and if the operation instruction is the removal instruction, removing the topologically-associated pile network switch and sending the acoustic-optical-electrical fault alarm signal.
Preferably, the vehicle pile net medium and long term integrated early warning processing part comprises: the method comprises the steps of inputting relevant information of the vehicle pile network for medium and long term charging, processing the medium and long term fault integrated early warning process, pushing early warning information and outputting early warning processing. The input of the relevant information of the vehicle pile network medium-long charging comprises medium-long early warning data of the vehicle pile network, short-term fault codes of the vehicle pile network and abnormal operation data of the vehicle pile network; the vehicle pile network medium-long-term fault integrated early warning process comprises operation state safety index selection, vehicle pile network integrated safety state evaluation and integrated early warning processing. The vehicle pile network medium and long term early warning data is obtained through a medium and long term early warning algorithm according to the charging historical information data of each vehicle pile network, the medium and long term charging related faults and early warning information are input, then the integrated judgment and processing are carried out, the early warning grade is obtained through an evaluation algorithm, and finally early warning is output.
Preferably, in the integrated early warning process of the long-term and medium-term faults of the vehicle pile network, the running state safety index is selected by adopting a grey correlation degree method to select nine long-term and medium-term early warning indexes, which are respectively: the method comprises the steps of determining the health degree of an electric vehicle battery, the chargeable margin, the abnormal data index of the battery, the health degree of a charging pile, the maximum chargeable power, the abnormal data index of the charging pile, the health degree of a regional power distribution network, the load prediction power and the abnormal data index of a power grid.
Preferably, the vehicle pile network medium-long term early warning information warning and early warning processing output comprises operations of early warning information pushing, voice output, warning of fault indication, battery health early warning, charging pile early warning and regional power distribution network early warning.
The technical scheme of the invention has the advantages that: the invention considers the charging safety of the electric automobile from the integrated angle of the electric automobile, the charging pile and the power distribution network, simultaneously predicts the safety fault or hidden danger to the greatest extent from the short-term fault judgment and the medium-and-long-term early warning multi-space-time scale, provides a reasonable processing scheme, solves the problem as early as possible, ensures the safety of the charging process of the electric automobile as far as possible, and provides a technical support for promoting the development of the electric automobile on a large scale.
Drawings
Fig. 1 is a schematic structural diagram of an electric vehicle charging safety integrated early warning protection scheme of the invention.
Fig. 2 is a partial diagram of the short-term integrated fault logic judgment processing of the pile network.
Fig. 3 is a topological correlation diagram of the short-term fault of the pile network.
FIG. 4 is a vehicle fault logic determination flow diagram of the present invention.
Fig. 5 is a logic flow diagram of a charging pile fault determination in accordance with the present invention.
Fig. 6 is a flow chart of the power distribution network region fault logic determination of the present invention.
Fig. 7 is a flowchart of the present invention for short-term integration of pile nets.
Fig. 8 is a partial diagram of the middle-and-long-term integrated fault early warning processing of the vehicle pile net.
Fig. 9 is a system diagram for evaluating the middle-term and long-term integrated safety state of the vehicle pile net.
Detailed Description
Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. The embodiments are merely exemplary for applying the technical solutions of the present invention, and any technical solution formed by replacing or converting the equivalent thereof falls within the scope of the present invention claimed.
The invention provides an electric vehicle charging integrated safety early warning protection scheme, which aims at the safety of electric vehicles, charging piles and regional power distribution networks, ensures the charging safety of the electric vehicles from the aspects of short-term fault elimination and long-term early warning, and avoids potential safety hazards.
The invention discloses an electric vehicle charging integrated safety early warning protection scheme, in particular to an electric vehicle charging integrated safety early warning protection scheme, which comprises a vehicle pile network charging related information acquisition and storage part, a vehicle pile network charging related information acquisition and storage part and a vehicle pile network charging related information acquisition and storage part, wherein the vehicle pile network charging related information acquisition and storage part is used for acquiring vehicle pile network charging process information, contains various fault early warning information and carries out corresponding storage; the pile network short-term integrated fault logic judgment processing part is used for finishing logic judgment of short-term charging fault information and carrying out corresponding message pushing and fault processing operations; and the vehicle pile network medium-long term integrated early warning processing part is used for finishing vehicle pile network integrated safety state evaluation, giving early warning grades, and finishing fault information pushing and fault processing operations.
Specifically, charging and fault information acquired by a vehicle battery management system is transmitted to a charging station monitoring management system through CAN bus communication by a vehicle pile network charging related information acquisition and storage part, and then is transmitted to a charging operation management platform server through the Internet or the Ethernet; charging and fault information acquired by the charging pile monitoring and management system is sent to the charging station monitoring and management system in a CAN bus or 2/3/4G mode, and then is sent to a charging operation management platform server through the Internet or the Ethernet; acquiring relevant charging state information and fault information of a distribution area through a power distribution management system of the distribution area where the charging station is located, and uploading the charging state information and the fault information to a charging operation management platform server in an optical fiber communication or wireless communication mode; and stores the corresponding information.
And the pile network short-term integrated fault logic judgment processing part is used for finishing logic judgment of short-term charging fault information according to the charging information received by the platform server in real time, carrying out corresponding message pushing, and feeding back fault processing operation to each battery management system, the charging pile management system and the power distribution management system for switching off a communicated switch.
And the vehicle pile network medium-long term integrated early warning processing part is used for finishing vehicle pile network integrated safety state evaluation, giving early warning grade, finishing fault information pushing and feeding fault processing operation feedback to the vehicle pile network system to remind the vehicle pile network system of low health state to overhaul and eliminate hidden danger in time according to charging history information stored in the vehicle pile network stored by the platform.
The structure of the short-term integrated fault logic judgment processing part of the pile network is shown in fig. 2, and specifically comprises the following steps: and the method comprises the steps of inputting related information of the short-term charging of the pile network (pile network fault code information, pile network on-off state data and pile network operation data), and integrally judging the flow process, alarming the fault and processing the fault of the short-term fault of the pile network. The short-term charging related fault and operation information is input, integrated judgment and processing are carried out, and finally alarm is output.
The integrated judging process for the short-term faults of the pile network comprises fault topology association analysis, fault logic judgment and integrated fault processing, wherein the fault topology association is used for providing an integrated logic judging basis for the faults, and the fault processing is used for outputting an integrated judging result.
The failure topology association analysis is shown in fig. 3, and includes the following steps: acquiring a short-term fault code of a vehicle pile network, judging the type of the short-term fault code, and acquiring a charging pile logical relationship connected with a vehicle and a power distribution station logical relationship connected with the charging pile if the short-term fault code of the vehicle battery management system is acquired; if the short-term fault code of the charging pile is obtained, then the logical relation of the vehicles connected with the charging pile is obtained, and the logical relation of the distribution area where the charging pile is located is obtained; and if the short-term fault code of the regional power distribution network is acquired, acquiring the logical relation of the charging piles connected with the power distribution station area, and acquiring the logical relation of the vehicles connected with the charging piles in the power distribution station area.
The fault logic judgment comprises vehicle fault logic judgment, charging pile fault logic judgment and distribution network area fault logic judgment, the vehicle fault logic judgment process is shown in fig. 4, and the vehicle fault logic judgment process comprises the following steps:
collecting the state and the charging current of a charging connector, judging whether the connector is disconnected and the charging current is smaller than a no-current threshold value, if the connector is disconnected, indicating that the short-term fault of the vehicle is removed, and turning to a fault processing program; if the non-disconnected connector indicates that the short-term fault of the vehicle is not removed and a charging pile removing instruction is sent out, the on-off state and the charging current of the charging pile are collected circularly, three-second judgment is delayed, and whether the charging pile is disconnected or not is judged and the charging current is smaller than a no-current threshold value is judged; if the charging pile is disconnected from the steering fault processing program, otherwise, a fault removing instruction of the distribution area is sent, and then fault processing is carried out;
charging pile fault logic judgment flow is shown in fig. 5, and the charging pile fault logic judgment flow comprises the following steps: collecting the on-off state and the charging current of the charging pile, judging whether the charging pile is disconnected and the charging current is smaller than a no-current threshold value, if the disconnection indicates that the pile fault is removed, turning to a fault processing program, otherwise, sending a fault removing instruction of a distribution area, and then performing fault processing;
the power distribution station area fault logic judgment process is shown in fig. 6, and includes the following steps: collecting the switch state and the charging current of the distribution area, judging whether the switch of the distribution area is disconnected and the charging current is smaller than a no-current threshold value, if the disconnection indicates that the fault of the distribution area is removed, turning to a fault processing program, otherwise, sending a fault removal instruction to the high-voltage side of the distribution area, and then performing fault processing.
The pile network short-term integrated fault processing flow is shown in fig. 7, and comprises the following steps: and judging whether the operation instruction is a fault removal instruction or an alarm instruction, if the operation instruction is the alarm signal instruction, sending an acoustic-optical-electrical fault alarm signal, and if the operation instruction is the removal instruction, removing the topologically-associated pile network switch and sending the acoustic-optical-electrical fault alarm signal.
The early warning processing part of the car pile net for the medium and long term integration is shown in fig. 8, and the early warning processing part of the car pile net for the medium and long term integration comprises the following steps: the method comprises the steps of inputting relevant information of the vehicle pile network for medium and long term charging, processing the medium and long term fault integrated early warning process, pushing early warning information and outputting early warning processing. The input of the relevant information of the vehicle pile network medium-long charging comprises medium-long early warning data of the vehicle pile network, short-term fault codes of the vehicle pile network and abnormal operation data of the vehicle pile network; the vehicle pile network medium-long-term fault integrated early warning process comprises operation state safety index selection, vehicle pile network integrated safety state evaluation and integrated early warning processing. The vehicle pile network medium and long term early warning data is obtained through a medium and long term early warning algorithm according to the charging historical information data of each vehicle pile network, the medium and long term charging related faults and early warning information are input, then the integrated judgment and processing are carried out, the early warning grade is obtained through an evaluation algorithm, and finally early warning is output.
In the integrated early warning process of the middle-long-term faults of the vehicle pile network, nine middle-long-term early warning indexes are selected by selecting the safety indexes of the running state by adopting a gray correlation degree method, wherein the nine middle-long-term early warning indexes are respectively as follows: the method comprises the steps of determining the health degree of an electric vehicle battery, the chargeable margin, the abnormal data index of the battery, the health degree of a charging pile, the maximum chargeable power, the abnormal data index of the charging pile, the health degree of a regional power distribution network, the load prediction power and the abnormal data index of a power grid.
The vehicle pile network medium-long-term early warning information warning and early warning processing output comprises operations of early warning information pushing, voice output, warning of fault indication, battery health early warning, charging pile early warning and regional power distribution network early warning.
In the vehicle pile network medium-and-long-term integrated early warning process, a long-term integrated safety state evaluation system is shown in fig. 9, the vehicle pile network integrated safety state evaluation adopts a fuzzy evaluation analysis method to give out corresponding early warning grades, and the specific operation is as follows:
setting a first level evaluation index set as
U＝{U1，U2，U3} (1)
In the formula of U1Is a battery hidden danger index set, U2For charging pile hidden danger index set, U3For regional distributionNetwork hidden danger index set. The second-level index factor set of each evaluation factor in the comprehensive evaluation index set is
In the formula u11，u12，u13Respectively representing the health degree, the chargeable margin and the abnormal data of the battery; u. of21，u22，u23Respectively representing the health degree, the maximum chargeable power and the abnormal data of the charging pile; u. of31，u32，u33Respectively representing the health degree, the load prediction power and the abnormal data of the power grid of the regional power distribution network.
Determining corresponding index weight, establishing corresponding weight coefficient matrix, having
In the formula, a11，a12，a13Respectively representing the health degree, the chargeable margin and the proportion of abnormal data of the battery; a is21，a22，a23Respectively representing the health degree, the maximum chargeable power and the abnormal data weight a of the charging pile31，a32，a33Respectively representing the health degree of the regional distribution network, the load prediction power and the proportion of abnormal data of the power grid.
Selecting a five-grade evaluation grade set, i.e.
V＝{v1，v2，v3，v4，v5} (4)
Wherein v1 is absolutely safe, v2 is safe, v3 is normal, v4 is dangerous, and v5 is very dangerous.
Determining a one-factor fuzzy evaluation matrix for the ith primary index U i
The result of the single-stage evaluation is
Bi＝Ai×Ri＝[bi1，bi2，L，bi5] (6)
The comprehensive evaluation decision matrix of three primary indexes of the electric automobile, the charging pile and the regional power distribution network is
And for the three first-layer evaluation index weights of the electric automobile, the charging pile and the regional power distribution network, obtaining a weight result of W ═ W according to the grey correlation degree1，W2，W3]
The result of the medium-and long-term integrated safety comprehensive evaluation is
C＝W×R＝[C1，C2，L，C5] (8)
And determining which evaluation grade belongs to V according to the maximum value of the weight in the C, and giving a corresponding early warning grade. And carrying out early warning information pushing, voice output and fault indication output on the vehicle pile network medium and long-term early warning information warning, and carrying out processing operation on battery health early warning, charging pile early warning and regional power distribution network early warning.
The early warning protection scheme fully considers the short-term and medium-term fault early warning in the charging process of the electric automobile, predicts the safety fault or hidden danger to the maximum extent, provides a reasonable processing scheme and solves the problem as early as possible.
The invention has various embodiments, and all technical solutions formed by adopting equivalent transformation or equivalent transformation are within the protection scope of the invention.
Claims (5)
1. The utility model provides an electric automobile integration safety precaution protection system that charges which characterized in that: the system comprises a vehicle pile network charging related information acquisition and storage part, a charging operation management platform server, a charging station monitoring management system and a charging operation management platform server, wherein charging and fault information acquired by a vehicle battery management system is transmitted to the charging station monitoring management system through CAN bus communication, and then is transmitted to the charging operation management platform server through the Internet or the Ethernet; charging and fault information acquired by the charging pile monitoring and management system is sent to the charging station monitoring and management system in a CAN bus or 2/3/4G mode, and then is sent to a charging operation management platform server through the Internet or the Ethernet; acquiring relevant charging state information and fault information of a distribution area through a power distribution management system of the distribution area where the charging station is located, and uploading the charging state information and the fault information to a charging operation management platform server in an optical fiber communication or wireless communication mode; and storing the corresponding information;
the pile network short-term integrated fault logic judgment processing part is used for finishing logic judgment of short-term charging fault information according to charging information received by the platform server in real time, carrying out corresponding message pushing, and feeding fault processing operation back to a switch used for cutting off communication of each battery management system, the charging pile management system and the power distribution management system;
the vehicle pile network medium-long term integrated early warning processing part is used for finishing vehicle pile network integrated safety state evaluation according to charging history information stored by a vehicle pile network stored by a platform, giving an early warning grade, finishing fault information pushing, and feeding fault processing operation back to the vehicle pile network system to remind a system in a low health state of timely overhauling and eliminating hidden dangers;
the pile network short-term integrated fault logic judgment processing part comprises: inputting short-term charging related information of the pile network, integrally judging flow processing short-term faults of the pile network, and outputting fault alarm and fault processing, inputting short-term charging related faults and operation information, integrally judging and processing, and finally outputting an alarm; the short-term charging related information of the pile network comprises pile network fault code information, pile network on-off state data and pile network operation data, and the short-term fault integrated judgment process of the pile network comprises fault topology association analysis, fault logic judgment and integrated fault treatment, wherein the fault topology association is used for providing an integrated logic judgment basis for faults, and the fault treatment is used for outputting an integrated judgment result;
the fault topology association analysis comprises the following steps: acquiring a short-term fault code of a vehicle pile network, judging the type of the short-term fault code, and acquiring a charging pile logical relationship connected with a vehicle and a power distribution station logical relationship connected with the charging pile if the short-term fault code of the vehicle battery management system is acquired; if the short-term fault code of the charging pile is obtained, then the logical relation of the vehicles connected with the charging pile is obtained, and the logical relation of the distribution area where the charging pile is located is obtained; if the short-term fault code of the regional distribution network is obtained, then the logical relation of the charging piles connected with the distribution substation is obtained, and the logical relation of the vehicles connected with the charging piles of the distribution substation is obtained; the fault logic judgment comprises vehicle fault logic judgment, charging pile fault logic judgment and distribution network area fault logic judgment, and the vehicle fault logic judgment process comprises the following steps:
collecting the state and the charging current of a charging connector, judging whether the connector is disconnected and the charging current is smaller than a no-current threshold value, if the connector is disconnected, indicating that the short-term fault of the vehicle is removed, and turning to a fault processing program; if the non-disconnected connector indicates that the short-term fault of the vehicle is not removed and a charging pile removing instruction is sent out, the on-off state and the charging current of the charging pile are collected circularly, three-second judgment is delayed, and whether the charging pile is disconnected or not is judged and the charging current is smaller than a no-current threshold value is judged; if the charging pile is disconnected with the steering fault processing program, otherwise, a power distribution station area fault removal instruction is sent, and then fault processing is carried out;
the charging pile fault logic judgment process comprises the following steps:
acquiring the on-off state and the charging current of the charging pile, judging whether the charging pile is disconnected and the charging current is smaller than a no-current threshold value, if the disconnection indicates that the pile fault is removed, turning to a fault processing program, otherwise, sending a fault removal instruction of a distribution substation area, and then performing fault processing;
the power distribution network area fault logic judgment process comprises the following steps: collecting the switch state and the charging current of the distribution network area, judging whether the switch of the distribution network area is disconnected and the charging current is smaller than a no-current threshold value, if the disconnection indicates that the fault of the distribution network area is removed, turning to a fault processing program, otherwise, sending a fault removal instruction to the high-voltage side of the distribution network area, and then performing fault processing.
2. The integrated safety early warning and protecting system for electric vehicle charging according to claim 1, characterized in that: the short-term integrated fault processing flow of the pile driving network comprises the following steps: and judging whether the operation instruction is a fault removal instruction or an alarm instruction, if the operation instruction is the alarm signal instruction, sending an acoustic-optical-electrical fault alarm signal, and if the operation instruction is the removal instruction, removing the topologically-associated pile network switch and sending the acoustic-optical-electrical fault alarm signal.
3. The integrated safety early warning and protecting system for electric vehicle charging according to claim 1, characterized in that: the vehicle pile net medium-long term integrated early warning processing part comprises: inputting relevant information of long-term charging in the vehicle pile network, processing the integrated early warning process of long-term faults in the vehicle pile network, pushing early warning information and outputting early warning processing; the input of the relevant information of the vehicle pile network medium-long charging comprises medium-long early warning data of the vehicle pile network, short-term fault codes of the vehicle pile network and abnormal operation data of the vehicle pile network; the integrated early warning process for the middle-long-term faults of the vehicle pile network comprises the steps of selecting safety indexes of the running state, evaluating the integrated safety state of the vehicle pile network and performing integrated early warning treatment; the vehicle pile network medium-long term early warning data is obtained through a medium-long term early warning algorithm according to the charging historical information data of each vehicle pile network, medium-long term charging related faults and early warning information are input, then integrated judgment and processing are carried out, early warning grades are obtained through an evaluation algorithm, and early warning is output finally.
4. The integrated safety early warning and protecting system for electric vehicle charging according to any one of claims 1-3, characterized in that: in the integrated early warning process of the middle-long-term faults of the vehicle pile network, nine middle-long-term early warning indexes are selected by selecting the safety indexes of the running state by adopting a gray correlation degree method, wherein the nine middle-long-term early warning indexes are respectively as follows: the method comprises the steps of determining the health degree of an electric vehicle battery, the chargeable margin, the abnormal data index of the battery, the health degree of a charging pile, the maximum chargeable power, the abnormal data index of the charging pile, the health degree of a regional power distribution network, the load prediction power and the abnormal data index of a power grid.
5. The integrated safety early warning protection system for electric vehicle charging according to claim 4, characterized in that: the vehicle pile network medium-long-term early warning information warning and early warning processing output comprises operations of early warning information pushing, voice output, warning of fault indication, battery health early warning, charging pile early warning and regional power distribution network early warning.
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| US11336662B2 (en) * | 2018-11-21 | 2022-05-17 | Abb Schweiz Ag | Technologies for detecting abnormal activities in an electric vehicle charging station |
| CN111277542A (en) * | 2018-12-04 | 2020-06-12 | 国网电动汽车服务有限公司 | Method and device for determining information security state of electric vehicle charging network |
| CN111038291B (en) * | 2019-12-16 | 2021-06-11 | 国网江苏省电力有限公司电力科学研究院 | Intelligent diagnosis system and method for charging fault of electric automobile |
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