CN107104452B - Intelligent monitoring system and method for high-power mobile energy storage vehicle - Google Patents

Intelligent monitoring system and method for high-power mobile energy storage vehicle Download PDF

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Publication number
CN107104452B
CN107104452B CN201710344443.6A CN201710344443A CN107104452B CN 107104452 B CN107104452 B CN 107104452B CN 201710344443 A CN201710344443 A CN 201710344443A CN 107104452 B CN107104452 B CN 107104452B
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energy storage
communication card
communication
data
personal computer
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CN107104452A (en
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谢宁
曾杰
赵伟
徐琪
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China Southern Power Grid Power Technology Co Ltd
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Guangdong Electric Power Design Institute
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J13/0079
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means

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  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The embodiment of the invention discloses an intelligent monitoring system and method for a high-power mobile energy storage vehicle, which are used for solving the technical problem that data acquisition and transmission of the existing mobile system are prone to errors. The method provided by the embodiment of the invention comprises the following steps: the system comprises a field level system and a management level system, wherein the field level system is in remote communication connection with the management level system; the field level system comprises an industrial personal computer, an RS-485 communication card and a CAN communication card; the industrial personal computer is connected with the RS-485 communication card and the CAN communication card respectively, and the RS-485 communication card is a standby communication card; the RS-485 communication card and the CAN communication card are respectively connected with a super capacitor BMS, a ternary lithium battery BMS, an automatic fire-fighting system and an energy storage and conversion system; the CAN communication card is used for being put into operation when the system normally operates, the RS-485 communication card is used for being put into operation when CAN communication fails, and when the CAN communication card fails, communication is carried out through the spare RS-485 communication card.

Description

Intelligent monitoring system and method for high-power mobile energy storage vehicle
Technical Field
The invention relates to the field of mobile monitoring, in particular to an intelligent monitoring system and method for a high-power mobile energy storage vehicle.
Background
The urban central distribution network has high load density, high power supply reliability and electric energy quality requirements and difficult capacity expansion of power transformation and distribution equipment. The distributed energy storage system can be developed to carry out peak clipping and valley filling, improve the utilization rate of power equipment, reduce or delay the investment of the power equipment and improve the quality of electric energy, and has important effects on the safe and economic operation of a power distribution network and the development of an intelligent power distribution network. For the rapid development of distributed power supplies and micro-grids, power is required to be balanced in real time, the frequency, the voltage level and other electric energy quality indexes of the grids are required to be maintained, and an energy storage system is an indispensable resource in many occasions. The research on the integration, configuration, detection and control of the energy storage system has important significance for the operation and development of distributed power supplies and micro-grids.
The energy storage system can flexibly regulate and control the output of the energy storage system, has high response speed, is ideal frequency modulation and peak regulation resources, and can play a role in reactive power support. The movable energy storage vehicle takes a container as a carrier, takes a motor vehicle as a transportation tool, and is internally provided with an energy storage system, an energy storage converter and a monitoring system so as to realize a movable power supply system for electric energy transportation and dispatching at any time and any place. Compared with traditional power supply modes such as a diesel engine, the intelligent power supply system has the advantages of being convenient to install and maintain, capable of being moved at any time, low in noise, capable of being moved at any time, strong in maneuverability, free of heat radiation, strong in concealment and the like, and can better meet the requirements of power supply in complex environments such as islands, deserts, hot flashes, disaster areas and the like, emergency power supply in secret places and outdoor fields and the like.
The traditional mobile energy storage system generally has single energy storage medium and single function and does not have the applicability of multiple scenes. The hybrid mobile energy storage system overcomes the defects of the traditional mobile energy storage system, is provided with a power type energy storage medium and an energy type energy storage medium, can support impact load, can realize energy standby, and greatly increases the practicability of the mobile energy storage system. The traditional mobile energy storage vehicle monitoring system is mostly based on an energy storage battery BMS (battery management system) and a converter controller, the acquired information amount is less, the function is single, the reliability is poor, and the operation and the scheduling of operators and managers are not easy. The method comprises the following specific steps:
1. the inherent defects of the mobile system are that the vibration is strong, the working condition is severe, the field environment interference ratio is high, the data acquisition and transmission are easy to make mistakes, and the reliability of the system is seriously influenced.
2. Multiple energy storage medium is placed in different intervals of container, causes that the equipment integrated level is high, the heat dissipation difficulty, needs the operating condition of mastering the operating condition of multiple energy storage medium, the different spaced environmental condition of container, automatic fire control device, pressure exhaust device in real time, and traditional monitored control system hardly realizes.
3. A remote management platform needs to be configured, so that remote management personnel can conveniently master and schedule the geographic positions, the operation information, the safety information and the like of the multiple mobile energy storage vehicles in real time.
Therefore, what is needed by those skilled in the art is to provide an intelligent monitoring system for a high-power mobile energy storage vehicle to solve the technical problem that data collection and transmission are prone to errors.
Disclosure of Invention
The embodiment of the invention provides an intelligent monitoring system for a high-power mobile energy storage vehicle, which is used for solving the technical problem that data acquisition and transmission are prone to errors.
The embodiment of the invention provides an intelligent monitoring system for a high-power mobile energy storage vehicle, which comprises: the system comprises a field level system and a management level system, wherein the field level system is in remote communication connection with the management level system;
the field level system comprises an industrial personal computer, an RS-485 communication card and a CAN communication card;
the industrial personal computer is connected with the RS-485 communication card and the CAN communication card respectively, and the RS-485 communication card is a standby communication card;
the RS-485 communication card and the CAN communication card are respectively connected with a super capacitor BMS, a ternary lithium battery BMS, an automatic fire-fighting system and an energy storage and conversion system;
the CAN communication card is used for being put into operation when the system normally operates, the RS-485 communication card is used for being put into operation when CAN communication fails, and when the CAN communication card fails, communication is carried out through the spare RS-485 communication card.
Preferably, the super capacitor BMS and the ternary lithium battery BMS both comprise a monitoring unit and a main control unit;
the monitoring unit is used for detecting the voltage and the temperature of the super capacitor or the ternary lithium battery and transmitting the obtained voltage and temperature information to the main control unit;
the main control unit is used for calculating the charge state and the residual electric quantity of the super capacitor or the ternary lithium battery after receiving the data and sending an instruction to control the super capacitor or the ternary lithium battery to carry out charging and discharging adjustment.
Preferably, the automatic fire fighting system comprises a smoke sensor, a temperature sensor, a flame sensor and an area alarm controller;
the smoke sensor, the temperature sensor and the flame sensor are connected with the area alarm controller through a fire-fighting bus;
the high-power mobile energy storage vehicle comprises a plurality of chambers, and the smoke sensor, the temperature sensor, the flame sensor and the area alarm controller are respectively arranged in the chambers;
the regional alarm controller is also connected with the fire extinguishing device, the fire prevention valve system, the ventilation system, the power distribution system and the horn lamp and used for sending out instructions to close all power distribution and energy storage equipment, close the fire prevention valve and the ventilation system, start the fire extinguishing device and give out light and sound to warn when a fire disaster happens.
Preferably, the energy storage conversion system specifically comprises a DC/DC converter and a DC/AC converter;
the DC/DC converter and the DC/AC converter are respectively connected with a control panel;
the control panel is connected with the RS-485 communication card and the CAN communication card;
the control panel is used for realizing signal acquisition, conditioning, operation, output of PWM modulation signals and communication functions.
Preferably, the field level system further comprises an acquisition card, and the acquisition card is connected with the industrial personal computer;
the energy storage and conversion system also comprises an independent transmitter, wherein the transmitter is used for conditioning electrical quantity and converting the voltage and current of the power grid into voltage and current analog quantity;
the acquisition card is connected with the energy storage and current transformation system and is used for acquiring the voltage and current analog quantity.
Preferably, the site level system further comprises a remote communication module;
the remote communication module is connected with the industrial personal computer, is in communication connection with a mobile information server arranged in the management level system, and is used for performing information data interaction with the management level system.
Preferably, the field level system further comprises a GPS satellite positioning module for providing geographic information of the location of the mobile energy storage system and providing a functional interface corresponding to the GIS electronic map.
Preferably, the management level system comprises the mobile information server, a database, a system server, a remote printer and a remote display;
the mobile information server is connected with the database, the system server, the remote printer and the remote display through Ethernet;
the system server is used for receiving, verifying, analyzing and managing each data after receiving the information sent by the mobile energy storage system;
the remote printer is used for printing the information sent by the mobile information server;
and the remote display is used for displaying the information sent by the mobile information server.
The embodiment of the invention provides an intelligent monitoring method for a high-power mobile energy storage vehicle, which is executed based on the intelligent monitoring system for the high-power mobile energy storage vehicle and comprises the following steps:
detecting whether the industrial personal computer successfully handshakes with the super capacitor BMS, the ternary lithium battery BMS, the automatic fire-fighting system and the energy storage converter system through a CAN communication card, if so, selecting the CAN communication card to communicate and finish, and if not, sending a CAN bus communication fault alarm signal and entering the next step;
and detecting whether the industrial personal computer successfully handshakes with the super capacitor BMS, the ternary lithium battery BMS, the automatic fire-fighting system and the energy storage converter system through an RS-485 communication card, if so, selecting the RS-485 communication card to carry out communication and finish, and if not, sending a communication fault alarm signal.
Preferably, the specific method for detecting whether the industrial personal computer successfully handshakes with the super capacitor BMS, the ternary lithium battery BMS, the automatic fire protection system and the energy storage converter system through a CAN communication card or detecting whether the industrial personal computer successfully handshakes with the super capacitor BMS, the ternary lithium battery BMS, the automatic fire protection system and the energy storage converter system through an RS-485 communication card comprises the following steps:
s1, the industrial personal computer judges whether the sending times of the handshake signals exceed K times, if yes, the industrial personal computer sends out handshake unsuccessful signals, and if not, the industrial personal computer sends out handshake signals through the CAN communication card or the RS-485 communication card;
s2, starting a timer in the industrial personal computer and judging whether the handshake signals are successfully sent or not, if so, waiting for returning a handshake confirmation frame, otherwise, closing the timer and accumulating the sending times of the handshake signals and adding one, and returning to the step S1;
s3, detecting whether the handshake confirmation frame is received, if so, sending a handshake success signal to enable the industrial personal computer to select a CAN communication card or an RS-485 communication card for communication, if not, closing the timer after the timer arrives, accumulating the transmission times of the handshake signal and adding one, and returning to the step S1;
the RS-485 communication card, the CAN communication card and an industrial personal computer, the super capacitor BMS, the ternary lithium battery BMS, the automatic fire fighting system and the energy storage converter system are communicated with data by adding marks, wherein the marks are specifically as follows:
the data mark is used for marking 2-25 times of harmonic current, harmonic voltage, active power, reactive power, negative sequence voltage and negative sequence current on the DC/AC alternating current side, voltage, current and temperature of a single super capacitor, voltage, current and temperature of a single lithium battery and other data;
the second-class data mark is used for marking data such as system operation mode information, alarm data, electric quantity, stored energy and the like;
the system comprises three types of data markers, a mobile energy storage system, a wireless network and a wireless network, wherein the three types of data markers are used for marking data of a mobile energy storage system in a grid;
the industrial personal computer displays the waveform or trend of the corresponding data according to the first-class data marks, does not store the waveform or trend, stores and displays the corresponding data according to the second-class data marks, and remotely communicates and uploads the corresponding data to a remote server according to the third-class data marks.
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention is connected with the RS-485 communication card and the CAN communication card by arranging an industrial personal computer; the RS-485 communication card and the CAN communication card are respectively connected with a super capacitor BMS, a ternary lithium battery BMS, an automatic fire-fighting system and an energy storage and conversion system; the CAN communication card is used for being put into operation when the system normally operates, the RS-485 communication card is used for being put into operation when CAN communication fails, and when the CAN communication card fails, communication is carried out through the spare RS-485 communication card. Therefore, when the CAN communication card fails, the standby RS-485 communication card CAN be used for communication, and the technical problem that data acquisition and transmission of the existing mobile system are prone to errors is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of an embodiment of an intelligent monitoring system for a high-power mobile energy storage vehicle according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an embodiment of an intelligent monitoring method for a high-power mobile energy storage vehicle according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a judgment handshake method in an embodiment of an intelligent monitoring method for a high-power mobile energy storage vehicle according to the embodiment of the invention;
fig. 4 is an internal structure diagram of a carrier of a high-power mobile energy storage vehicle, which is only a monitoring system, according to an embodiment of the present invention;
fig. 5 is a schematic diagram of another embodiment of an intelligent monitoring system for a high-power mobile energy storage vehicle according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an automatic fire fighting system in another embodiment of the intelligent monitoring system for the high-power mobile energy storage vehicle according to the embodiment of the invention;
fig. 7 is a schematic diagram of an energy storage commutation system in another embodiment of the intelligent monitoring system for the high-power mobile energy storage vehicle according to the embodiment of the invention;
fig. 8 is a schematic diagram of another embodiment of the intelligent monitoring method for the high-power mobile energy storage vehicle according to the embodiment of the invention.
Wherein the reference numbers are as follows:
1. a management level system; 101. a mobile information server; 102. a database; 103. a system server; 104. a remote printer; 105. a remote display; 2. a field level system; 201. an industrial personal computer; 202. an RS-485 communication card; 203. a CAN communication card; 204. collecting cards; 205. a remote communication module; 301. a super capacitor BMS; 302. a ternary lithium battery BMS; 303. an automatic fire fighting system; 304. an energy storage converter system.
Detailed Description
The embodiment of the invention provides an intelligent monitoring system and method for a high-power mobile energy storage vehicle, which are used for solving the technical problem that data acquisition and transmission are prone to errors.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides an intelligent monitoring system for a high-power mobile energy storage vehicle, including: the system comprises a field level system 2 and a management level system 1, wherein the field level system 2 is in remote communication connection with the management level system 1;
the field level system 2 comprises an industrial personal computer 201, an RS-485 communication card 202 and a CAN communication card 203;
the industrial personal computer 201 is respectively connected with an RS-485 communication card 202 and a CAN communication card 203, wherein the RS-485 communication card 202 is a standby communication card;
the RS-485 communication card 202 and the CAN communication card 203 are respectively connected with a super capacitor BMS301, a ternary lithium battery BMS302, an automatic fire-fighting system 303 and an energy storage converter system 304;
the CAN communication card 203 is used for being put into operation when the system normally operates, the RS-485 communication card 202 is used for being put into operation when CAN communication fails, and when the CAN communication card 203 fails, communication is carried out through the spare RS-485 communication card.
The super capacitor BMS301 and the ternary lithium battery BMS302 both comprise a monitoring unit and a main control unit;
the monitoring unit is used for detecting the voltage and the temperature of the super capacitor or the ternary lithium battery and transmitting the obtained voltage and temperature information to the main control unit;
the main control unit is used for calculating the charge state and the residual electric quantity of the super capacitor or the ternary lithium battery after receiving the data and sending an instruction to control the super capacitor or the ternary lithium battery to carry out charging and discharging adjustment.
The automatic fire fighting system 303 comprises a smoke sensor, a temperature sensor, a flame sensor and an area alarm controller;
the smoke sensor, the temperature sensor and the flame sensor are connected with the area alarm controller through a fire-fighting bus;
the high-power mobile energy storage vehicle comprises a plurality of chambers, wherein the chambers are respectively provided with a smoke sensor, a temperature sensor, a flame sensor and an area alarm controller;
the regional alarm controller is also connected with the fire extinguishing device, the fire prevention valve system, the ventilation system, the power distribution system and the horn lamp and used for sending out instructions to close all power distribution and energy storage equipment, close the fire prevention valve and the ventilation system, start the fire extinguishing device and give out light and sound to warn when a fire breaks out.
The energy storage converter system 304 specifically includes a DC/DC converter and a DC/AC converter;
the DC/DC converter and the DC/AC converter are respectively connected with a control panel;
the control panel is connected with the RS-485 communication card 202 and the CAN communication card 203;
the control panel is used for realizing the functions of signal acquisition, conditioning, operation, output of PWM modulation signals, communication and the like.
The field level system 2 further comprises an acquisition card 204, and the acquisition card 204 is connected with the industrial personal computer 201;
the energy storage and conversion system 304 further comprises an independent transmitter, and the transmitter is used for conditioning electrical quantity and converting the voltage and current of the power grid into voltage and current analog quantity;
the acquisition card 204 is connected to the energy storage and conversion system 304 for acquiring voltage and current analog quantities.
Field level system 2 also includes a remote communication module 205;
the remote communication module 205 is connected with the industrial personal computer 201, is in communication connection with the mobile information server 101 arranged in the management level system 1, and is used for performing information data interaction with the management level system 1.
The field level system 2 further comprises a GPS satellite positioning module for providing the geographic information of the position of the mobile energy storage system and providing a functional interface corresponding to the GIS electronic map.
The management level system 1 comprises a mobile information server 101, a database 102, a system server 103, a remote printer 104 and a remote display 105;
the mobile information server 101 is connected with the database 102, the system server 103, the remote printer 104 and the remote display 105 through the Ethernet;
and the database 102 is used for storing information of the mobile energy storage system.
The mobile energy storage system is a system carried by a high-power mobile energy storage vehicle and comprises the monitoring system and other systems.
The system server 103 is used for receiving, verifying, analyzing and managing each data after receiving the information sent by the mobile energy storage system;
a remote printer 104 for printing the information transmitted from the mobile information server 101;
and a remote display 105 for displaying the information transmitted from the mobile information server 101.
The above is a detailed description of an embodiment of the intelligent monitoring system for the high-power mobile energy storage vehicle according to the embodiment of the present invention, and the following is a detailed description of an embodiment of the intelligent monitoring method for the high-power mobile energy storage vehicle according to the embodiment of the present invention.
The embodiment of the invention provides an intelligent monitoring method for a high-power mobile energy storage vehicle, which is executed based on the intelligent monitoring system for the high-power mobile energy storage vehicle and comprises the following steps:
401. detecting whether the industrial personal computer successfully shakes hands with the super capacitor BMS, the ternary lithium battery BMS, the automatic fire-fighting system and the energy storage converter system through the CAN communication card, if so, selecting the CAN communication card to communicate and finish, and if not, sending a CAN bus communication fault alarm signal and entering the next step;
402. and detecting whether the industrial personal computer successfully shakes hands with the super capacitor BMS, the ternary lithium battery BMS, the automatic fire-fighting system and the energy storage converter system through the RS-485 communication card, if so, selecting the RS-485 communication card to carry out communication and finish, and if not, sending a communication fault alarm signal.
The specific method for detecting whether the industrial personal computer and the super capacitor BMS, the ternary lithium battery BMS, the automatic fire fighting system and the energy storage converter system successfully handshake through the CAN communication card or whether the industrial personal computer and the super capacitor BMS, the ternary lithium battery BMS, the automatic fire fighting system and the energy storage converter system successfully handshake through the RS-485 communication card in the steps 401 and 402 comprises the following steps:
501. the industrial personal computer judges whether the sending times of the handshaking signals exceed K times, if so, the industrial personal computer sends out a handshaking unsuccessful signal, and if not, the industrial personal computer sends out the handshaking signals through the CAN communication card or the RS-485 communication card;
502. starting a timer in the industrial personal computer and judging whether the handshake signals are successfully sent, if so, waiting for returning a handshake confirmation frame, otherwise, closing the timer and accumulating the sending times of the handshake signals plus one, and returning to the step 501;
503. and detecting whether a handshake confirmation frame is received, if so, sending a handshake success signal to enable the industrial personal computer to select the CAN communication card or the RS-485 communication card for communication, otherwise, closing the timer after the timer arrives, accumulating the sending times of the handshake signals and adding one, and returning to the step 501.
Wherein, the RS-485 communication card 202, the CAN communication card 203 and the industrial personal computer 201, and the super capacitor BMS301, the ternary lithium battery BMS302, the automatic fire extinguishing system 303, the data of the energy storage converter system 304 communication add the mark, the mark specifically is:
the data mark is used for marking 2-25 times of harmonic current, harmonic voltage, active power, reactive power, negative sequence voltage and negative sequence current on the DC/AC alternating current side, voltage, current and temperature of a single super capacitor, voltage, current and temperature of a single lithium battery and other data;
the second-class data mark is used for marking data such as system operation mode information, alarm data, electric quantity, stored energy and the like;
the system comprises three types of data markers, a mobile energy storage system, a wireless network and a wireless network, wherein the three types of data markers are used for marking data of a mobile energy storage system in a grid;
the industrial personal computer 201 displays the waveform or trend of the corresponding data according to the first-class data marks, does not store the corresponding data, stores and displays the corresponding data according to the second-class data marks, and remotely communicates the corresponding data according to the third-class data marks and uploads the corresponding data to the remote server.
The above is a detailed description of an embodiment of the intelligent monitoring method for the high-power mobile energy storage vehicle according to the embodiment of the present invention, and the following is a detailed description of another embodiment of the intelligent monitoring system and the intelligent monitoring method for the high-power mobile energy storage vehicle according to the embodiment of the present invention.
In order to overcome the defects of the prior art, the invention provides an intelligent monitoring system suitable for a hybrid mobile energy storage system. Aiming at the three disadvantages in the background art, the method is respectively improved. The invention provides a dual-redundancy fault-tolerant mechanism based on two communication modes of RS-485 and CAN-BUS, realizes hot standby of the second communication mode, automatically switches the standby communication mode, and greatly improves the reliability of the communication link; aiming at the electric quantity collection, an independent data acquisition system (DAQ) is adopted instead of a communication system, so that the reliability is improved; the mixed mobile energy storage system is provided with a hexafluoropropane automatic fire extinguishing device, and the mixed mobile energy storage system is communicated with an upper computer through an area alarm controller to obtain real-time data of smoke, temperature and flame in an area; the upper computer is provided with a remote communication module and a GPS module, and uploads data to a remote computer in real time to realize remote monitoring.
The purpose of the invention can be realized by the following technical scheme:
portable energy storage system based on mix energy storage technique adopts the container as the container, mainly divide into four rooms: fire control room, surpass appearance room, battery room, distribution room. And an access door is arranged on one side of the battery chamber, so that the supercavitation chamber and the battery chamber can be conveniently and quickly overhauled. And the super-containing chamber, the battery chamber and the distribution chamber are provided with overhaul channels in the middle, so that the monitoring, overhaul and maintenance of personnel are facilitated. The distribution of the chambers is shown in figure 4.
Two automatic fire extinguishing devices are mainly placed in the fire-fighting chamber, and automatic fire fighting is carried out on the super-containing chamber, the battery chamber and the power distribution chamber by monitoring open fire in real time. The fire signal is sent out simultaneously from smoke fire detector and temperature sensing fire detector, and the controller sends out conflagration acoustic optical signal to send linkage instruction, close aggregate unit such as fan, fire prevention valve, send out the instruction of putting out a fire, start hexafluoropropane extinguishing device, release fire extinguishing agent implements to put out a fire, accomplish by the system oneself, do not need the control mode of personnel's intervention and operation. The super-capacitor chamber is provided with a super-capacitor bank to provide a high-power high-response-speed energy storage medium for the system. The battery compartment is configured with a lithium-ion polymer battery to provide sufficient spare capacity for the system. Because the ternary battery has higher requirement on the working temperature, the battery chamber is provided with an automatic temperature control system, and the lithium battery pack is ensured to operate in a stable and safe temperature range. The distribution room is provided with 2 bidirectional DC/DC to realize the direct-current voltage control of the ultra-capacitor battery pack and the lithium battery pack. 1 DC/AC energy storage converter is configured to convert direct current into 380V/50Hz alternating current. The power distribution cabinet realizes switching control, protection, direct current and alternating current output selection and the like of the mobile energy storage system.
The intelligent monitoring system upper computer is placed in a distribution room, and can realize real-time acquisition and display of parameters such as running information of each battery of the super capacitor, each module of the battery pack, temperature and humidity information of the container, running mode information of the mobile energy storage system, DC/DC direct-current bus voltage, DC/AC alternating-current output voltage and current information and the like. An operation area is arranged on one side of the intelligent monitoring system, so that operating personnel can operate the mobile energy storage system conveniently, and the operation parameter display of the intelligent monitoring system can be monitored conveniently.
The intelligent monitoring system proposed by the invention is shown in fig. 5.
Fig. 5 is an intelligent monitoring system, which mainly includes a management level, a field level, and an equipment level three-level system.
The equipment level mainly comprises a super capacitor BMS (battery management level system), a ternary lithium battery BMS (battery management level system), an automatic fire fighting system, a DC/DC (direct current/direct current) and a DC/AC (alternating current/alternating current) energy storage converter system and the like which are configured in the mobile energy storage system. The device level mainly realizes real-time acquisition of data such as super capacitors, ternary lithium batteries, multi-region environmental working conditions (temperature, smoke and flame), operating parameters of the energy storage converter, voltage and current, and the like, and realizes control over the operating modes, starting and stopping of the automatic fire-fighting system and the like of the DC/DC and DC/AC energy storage converters.
The field level is mainly a local monitoring system which comprises an industrial computer, an analog quantity acquisition card, a display, a remote communication module and other equipment. The data that mainly realize gathering to equipment level are demonstrateed, are analyzed, are saved, make things convenient for the operation personnel to master equipment operation information. And simultaneously, data interaction is carried out with the management-level host computer through the remote module.
And the management level carries out data interaction with a field level industrial personal computer through a remote communication module, and the management level comprises a remote host, a database server, a remote display and the like. The management level receives partial data of the site level, and a remote manager can conveniently monitor and dispatch data such as vehicle positions, container working conditions and equipment running conditions.
And (3) equipment level:
the device level mainly collects the running parameters of the super capacitor, the lithium battery, the DC/DC and DC/AC converter, the automatic fire fighting system and other devices, and simultaneously selects the running modes of the DC/DC and DC/AC converter through the instructions issued by the field level.
The voltage of the single body of the super capacitor is low, and when the mobile energy storage system is applied, the single body is required to be connected in series and in parallel to form a super capacitor bank so as to meet the power requirement of the system. The inherent problems of the lithium battery system material lead the performance of the lithium battery pack to be rapidly attenuated in the charging and discharging process and over-temperature process, and the lithium battery pack is scrapped. The voltage, temperature and charging and discharging current data of the super capacitor and the single lithium battery can be monitored through a BMS (battery management level system), and the State of Charge (SOC) and the residual electric quantity can be accurately estimated.
The BMS comprises a monitoring unit (BMU) and a main control unit (CMU), wherein the BMU detects the voltage and the temperature of a single super capacitor or a battery module, transmits the voltage and the temperature to the CMU after processing, and manages unbalance in the single super capacitor and the battery module; the BMU simultaneously realizes detecting the total voltage, the current and the insulation strength of the super-capacity group and the battery pack, and the processed data are transmitted to the CMU. And after receiving the data, the CMU estimates the charge states and the residual electric quantity of the super capacitor and the battery pack through the data, and protects the charge and discharge of the super capacitor and the battery pack. Meanwhile, the CMU is provided with an RS-485 and CAN-bus communication port and is communicated with the field-level upper computer. The upper computer system realizes communication with the equipment level through the RS-485 and CAN-bus board cards, receives data such as island voltage, current, temperature, SOC and the like, displays the data on a human-computer interaction interface, and realizes fault prompt according to preset threshold conditions.
The whole machine has higher integration level and severe working environment. In addition, the lithium ternary polymer battery refers to a lithium battery using a nickel cobalt lithium manganate (li (nicomn) O2) ternary cathode material as a cathode material, and the lithium ternary battery has higher energy density, but the safety is often suspected. The reason is that the cathode material is decomposed when reaching a certain temperature, the ternary lithium material is decomposed at about 200 degrees lower, and the lithium iron phosphate material is at about 800 degrees. And the chemical reaction of the ternary lithium material is more violent, oxygen molecules are released, the electrolyte is rapidly combusted under the action of high temperature, and a chain reaction occurs, namely the ternary lithium material is easier to catch fire than the lithium iron phosphate material. Therefore, a perfect automatic fire fighting device must be arranged in the container to realize regional fire monitoring and automatic fire extinguishing.
Fig. 6 is a communication structure of the field-level automatic fire fighting system. The automatic fire fighting device consists of a manual alarm device, a smoke sensor, a temperature sensor, a flame sensor and an area alarm controller. Because the containers are spaced more, a bus type alarm controller is adopted, namely, the area alarm controller and the detector are connected in a bus mode. The supercavity chamber, the battery chamber and the power distribution chamber are respectively provided with an area alarm controller and a corresponding volume sensor. When fire disaster happens in each interval area in the container, the fire disaster is changed into an electric signal through detectors such as a temperature sensor, a smoke sensor, a flame sensor and the like, the electric signal is transmitted to each area alarm controller, the controller is linked with a fire extinguishing device, a fire valve system, a ventilation system, an air conditioning system and a power distribution system, a command is automatically sent out, all power distribution and energy storage equipment are closed, the fire valve and the ventilation system are closed, a hexafluoropropane fire extinguishing device is started to release fire extinguishing gas, meanwhile, fire alarm signals are sent out to the alarm area and the outside of the container in modes such as sound and light, and related personnel are warned to take safe evacuation.
Fig. 7 is a communication structure diagram of the field-level energy storage system. The energy storage system is provided with two DC/DC converters which independently run and one DC/AC converter, so that independent charging and discharging control of two energy storage media is realized. The mobile energy storage system can work in a plurality of modes: a grid-connected operation mode, an off-grid operation mode and a direct current operation mode. When the grid-connected operation mode is operated, smooth new energy fluctuation can be realized in a micro-grid scene, the power supply reliability can be improved in a distribution network scene, and the functions of smoothing a load curve, slowing down the expansion of a distribution network and the like can be realized in a power utilization side scene; when the off-grid operation mode is adopted, the main power supply support can be realized in a micro-grid scene, the power supply in a remote mountain area can be realized at the distribution network side, and the uninterrupted power supply can be realized at the power utilization side; and in the direct current operation mode, the functions of charging a direct current load, building a micro-grid by matching with a direct current power supply (photovoltaic) and the like can be realized.
Different operation modes need to switch DC/DC and DC/AC control strategies (PQ control or droop control), and the method is realized by a mode of sending a switching signal by an upper computer.
The DC/DC and DC/AC systems are provided with independent control panels to realize the functions of signal acquisition, conditioning, operation, output of PWM modulation signals and communication, and are provided with independent RS-485 and CAN bus communication modules to construct a dual-redundancy communication system.
Regarding the collection of the electric quantity, the invention adopts an independent data acquisition system (DAQ) to collect the multi-path electric quantity. The DA system is provided with an independent transmitter for conditioning the electric quantity, the voltage and the current of the power grid are converted into 0-5V analog voltage quantity, and the upper computer is provided with an independent CPCI analog quantity acquisition board card for acquiring conditioned signals.
The collected data comprises two groups of DC/DC working states, real-time data of output voltage and current, voltage and current of a direct current bus, DC/AC direct current side voltage, output current and the like. A sampling frequency of 6.4kHz, i.e., 128 points per power frequency cycle, is used. The upper computer needs to analyze data such as power of each side, active power, reactive power and power factor of an alternating current side, harmonic effective value below 25 th order, 95% probability value and the like according to the sampling data. Because the data volume is relatively large, if the data transmission is performed by adopting a bus communication mode, a relatively large space and time interval are occupied, and the efficiency of a communication system is seriously influenced.
On-site level:
the site level is the core of the whole intelligent monitoring system. Acquiring execution level data, calculating, displaying and recording, and issuing a control instruction to the execution level by field operators through the field level; in addition, the execution stage realizes data interaction with a remote computer through remote communication, and a remote manager can issue a scheduling instruction to the mobile energy storage system conveniently.
The mobile energy storage system takes the container as a carrier and the automobile as a carrying tool, so that the field-level industrial personal computer system needs to have the characteristics of good shock resistance, good heat dissipation, electromagnetic interference resistance and the like. For this reason, the industrial personal computer and the acquisition card in the field level adopt the CompactPCI (CPCI) standard. CPCI is based on the PICMG2.0 specification. The electrical characteristics of the PCI peripheral card are the same as those of a PCI bus, so that the software of a user is compatible with a common PC, and the existing PCI peripheral card can be easily transplanted to a CPCI platform. CPCI uses 2mm high density pinhole bus connector, and compared with PCI card using golden finger connector, it has reliable connection, completely airtight characteristics, and the card has high shock resistance, corrosion resistance and anti-electromagnetic interference. In addition, the CPCI board card adopts an European card (Eurocard) structure, and the European card adopts a vertical installation and front extraction structure, so that the heat dissipation, the shock resistance and the easy maintenance of the card are improved. Has the following advantages: the CPCI board card with strong system vibration resistance is fixed by upper and lower guide rails, the front end of the card is connected with a back plate through an airtight pinhole connector, and each connector has a binding force of 10 kg. The card can be fixed on the case through panel screws. The CPCI board card is fixed front, back, up and down, so that the shock resistance of the system is high.
The field level interacts data with the management level through a remote communication module, the remote communication module mainly comprises a fourth generation mobile communication (4G) module, the fourth generation mobile communication (4G) module is directly installed on a CPCI industrial personal computer, and the module is connected with the management level mobile access server after being started and keeps smooth connection, so that data transmission is realized. The communication speed of the 4G module can reach 10Mbps to 20Mbps, even 100Mbps, and the real-time efficient transmission of data can be ensured.
The field level is provided with a GPS satellite positioning module, can provide geographic information of the position of the mobile energy storage system, provides a functional interface corresponding to the GIS electronic map, and can be integrated with the GIS electronic map function. The system may receive positioning information from the satellites through the GPS module and transmit the information to the management level through the 4G network.
Data for field level monitoring and control can be divided into three categories. One type of data has higher sampling rate, can display waveforms or trends, and does not store the waveforms or the trends; the second-class data is low in sampling rate, and is obtained by calculating part of the first-class data and needs to be stored and displayed; three types of data need to be uploaded to a remote server through remote communication.
One type of data:
2-25 times of harmonic current, harmonic voltage, active power, reactive power, negative sequence voltage and negative sequence current on the DC/AC alternating current side. The voltage, the current and the temperature of the super capacitor single body and the voltage, the current and the temperature of the lithium battery single body.
And (3) second-class data:
and (3) system operation mode: grid-connected operation, off-grid operation and direct-current operation modes;
alarm data: energy storage over-temperature alarm, energy storage overvoltage, overcurrent, monomer damage alarm, DC/AC direct current side overvoltage, alternating current side overcurrent, IGBT over-temperature, harmonic current out-of-limit, harmonic voltage distortion rate (THD) out-of-limit, power factor out-of-limit, power grid frequency out-of-limit, communication fault alarm, environment temperature, smoke, flame alarm and the like;
electrical quantity: the voltage, current, frequency, THD, DC/AC direct current side voltage and DC/AC voltage current effective value of the DC/AC alternating current side;
energy storage: voltage, current, temperature and SOC of the super capacitor bank, voltage, current, temperature and SOC of the lithium battery bank and the like.
Three types of data:
the method comprises the following steps of (1) carrying out grid-connected operation, off-grid operation and direct-current operation mode data on a mobile energy storage system; communication failure alarm, ambient temperature, smoke, flame alarm, etc.; geographic information data.
And (3) management level:
the management level comprises a mobile information server, a database, a system server, a remote printer, a remote display and the like, the Ethernet networking is mainly adopted, and the data received by the 4G module is required to be received by the mobile information server. After receiving the information sent by the mobile energy storage system, the system server receives, checks, analyzes and manages each data, can alarm key data of communication fault alarm, environment temperature, smoke, flame alarm and the like of the mobile energy storage system, and can directly give an alarm signal under some conditions (such as no operating personnel on site) so as to ensure the safety of the system.
The database server is configured with a disk array and can record a large amount of data. In addition, the mobile energy storage system is provided with equipment such as a remote printer and a remote display, so that management and scheduling of the mobile energy storage system by a manager are facilitated.
The RS-485 and CAN-BUS dual-redundancy communication method is another embodiment of the intelligent monitoring method for the high-power mobile energy storage vehicle provided by the embodiment of the invention;
the field level is configured with two communication links of RS-485 and CAN-BUS, the double communication link is based on hardware redundancy, and a double redundancy hot backup mode is adopted. After the CAN controller is electrified, the CAN controller is defaulted to be a main communication link, and RS-485 is used as a standby communication link. And when the system normally operates, the main communication is put into operation, and if the CAN bus communication mode is detected to have bus faults, the communication is automatically switched from the CAN bus to RS-485 communication. Therefore, when one communication system fails, the other communication system can continue to operate, reliable communication between a field level and a device level is guaranteed, and reliability of the system is improved.
And the RS-485 and CAN-BUS dual-redundancy communication carries out management and restriction of communication through a dual-redundancy protocol. The dual redundancy protocol is a protocol improved on the basis of a handshake protocol, and the content of the protocol is as follows: before the communication between the field level and the equipment level, a link is established first, and the link establishment method is three-way handshake. The protocol specifies that the CAN bus is a default main communication link, the upper computer is a main sender, a handshake request frame is initiated, the responder receives the handshake request and then sends back a handshake response frame, the main sender completes one-time handshake after receiving the handshake response frame within a specified time, and after three-time handshake is successful, the CAN bus is normally communicated, otherwise, the CAN bus is automatically replaced to another link RS-485. A specific dual redundancy communication switching manner is shown in fig. 8.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1. The utility model provides a high-power removal energy storage car intelligent monitoring system which characterized in that includes: the system comprises a field level system and a management level system, wherein the field level system is in remote communication connection with the management level system;
the field level system comprises an industrial personal computer, an RS-485 communication card and a CAN communication card;
the industrial personal computer is connected with the RS-485 communication card and the CAN communication card respectively, and the RS-485 communication card is a standby communication card;
the RS-485 communication card and the CAN communication card are respectively connected with a super capacitor BMS, a ternary lithium battery BMS, an automatic fire-fighting system and an energy storage and conversion system;
the CAN communication card is used for being put into operation when the system normally operates, the RS-485 communication card is used for being put into operation when CAN communication fails, and when the CAN communication card fails, communication is carried out through the spare RS-485 communication card;
the super capacitor BMS and the ternary lithium battery BMS respectively comprise a monitoring unit and a main control unit;
the monitoring unit is used for detecting the voltage and the temperature of the super capacitor or the ternary lithium battery and transmitting the obtained voltage and temperature information to the main control unit;
the main control unit is used for calculating the charge state and the residual electric quantity of the super capacitor or the ternary lithium battery after receiving the data and sending an instruction to control the super capacitor or the ternary lithium battery to carry out charge and discharge adjustment;
the site level system further comprises a remote communication module;
the remote communication module is connected with the industrial personal computer, is in communication connection with a mobile information server arranged in the management level system, and is used for performing information data interaction with the management level system.
2. The intelligent monitoring system of the high-power mobile energy storage vehicle as claimed in claim 1, wherein the automatic fire fighting system comprises a smoke sensor, a temperature sensor, a flame sensor and an area alarm controller;
the smoke sensor, the temperature sensor and the flame sensor are connected with the area alarm controller through a fire-fighting bus;
the high-power mobile energy storage vehicle comprises a plurality of chambers, and the smoke sensor, the temperature sensor, the flame sensor and the area alarm controller are respectively arranged in the chambers;
the regional alarm controller is also connected with the fire extinguishing device, the fire prevention valve system, the ventilation system, the power distribution system and the horn lamp and used for sending out instructions to close all power distribution and energy storage equipment, close the fire prevention valve and the ventilation system, start the fire extinguishing device and give out light and sound to warn when a fire disaster happens.
3. The intelligent monitoring system for the high-power mobile energy storage vehicle as claimed in claim 1, wherein the energy storage converter system specifically comprises a DC/DC converter and a DC/AC converter;
the DC/DC converter and the DC/AC converter are respectively connected with a control panel;
the control panel is connected with the RS-485 communication card and the CAN communication card;
the control panel is used for realizing signal acquisition, conditioning, operation, output of PWM modulation signals and communication functions.
4. The intelligent monitoring system of the high-power mobile energy storage vehicle as claimed in claim 1, wherein the field level system further comprises a collection card, and the collection card is connected with the industrial personal computer;
the energy storage and conversion system also comprises an independent transmitter, wherein the transmitter is used for conditioning electrical quantity and converting the voltage and current of the power grid into voltage and current analog quantity;
the acquisition card is connected with the energy storage and current transformation system and is used for acquiring the voltage and current analog quantity.
5. The intelligent monitoring system for the high-power mobile energy storage vehicle according to claim 1, wherein the site level system further comprises a GPS satellite positioning module for providing geographic information of the position of the mobile energy storage system and providing a functional interface corresponding to a GIS electronic map.
6. The intelligent monitoring system for the high-power mobile energy storage vehicle according to claim 1, wherein the management-level system further comprises the mobile information server, a database, a system server, a remote printer and a remote display;
the mobile information server is connected with the database, the system server, the remote printer and the remote display through Ethernet;
the system server is used for receiving, verifying, analyzing and managing each data after receiving the information sent by the mobile energy storage system;
the remote printer is used for printing the information sent by the mobile information server;
and the remote display is used for displaying the information sent by the mobile information server.
7. An intelligent monitoring method for a high-power mobile energy storage vehicle, which is implemented based on the intelligent monitoring system for the high-power mobile energy storage vehicle as claimed in any one of claims 1 to 6, and is characterized by comprising the following steps:
detecting whether the industrial personal computer successfully handshakes with the super capacitor BMS, the ternary lithium battery BMS, the automatic fire-fighting system and the energy storage converter system through a CAN communication card, if so, selecting the CAN communication card to communicate and finish, and if not, sending a CAN bus communication fault alarm signal and entering the next step;
and detecting whether the industrial personal computer successfully handshakes with the super capacitor BMS, the ternary lithium battery BMS, the automatic fire-fighting system and the energy storage converter system through an RS-485 communication card, if so, selecting the RS-485 communication card to carry out communication and finish, and if not, sending a communication fault alarm signal.
8. The intelligent monitoring method for the high-power mobile energy storage vehicle as claimed in claim 7, wherein the specific method for detecting whether the industrial personal computer successfully handshakes the super capacitor BMS, the ternary lithium battery BMS, the automatic fire protection system and the energy storage converter system through a CAN communication card or detecting whether the industrial personal computer successfully handshakes the super capacitor BMS, the ternary lithium battery BMS, the automatic fire protection system and the energy storage converter system through an RS-485 communication card comprises the following steps:
s1, the industrial personal computer judges whether the sending times of the handshake signals exceed K times, if yes, the industrial personal computer sends out handshake unsuccessful signals, and if not, the industrial personal computer sends out handshake signals through the CAN communication card or the RS-485 communication card;
s2, starting a timer in the industrial personal computer and judging whether the handshake signals are successfully sent or not, if so, waiting for returning a handshake confirmation frame, otherwise, closing the timer and accumulating the sending times of the handshake signals and adding one, and returning to the step S1;
s3, detecting whether the handshake confirmation frame is received, if so, sending a handshake success signal to enable the industrial personal computer to select a CAN communication card or an RS-485 communication card for communication, if not, closing the timer after the timer arrives, accumulating the transmission times of the handshake signal and adding one, and returning to the step S1;
the RS-485 communication card, the CAN communication card and an industrial personal computer, the super capacitor BMS, the ternary lithium battery BMS, the automatic fire fighting system and the energy storage converter system are communicated with data by adding marks, wherein the marks are specifically as follows:
the data mark is used for marking 2-25 times of harmonic current, harmonic voltage, active power, reactive power, negative sequence voltage and negative sequence current on the DC/AC alternating current side, voltage, current and temperature of a single super capacitor and voltage, current and temperature data of a single lithium battery;
the second-class data mark is used for marking system operation mode information, alarm data, electric quantity and energy storage data;
the system comprises three types of data markers, a mobile energy storage system, a wireless network and a wireless network, wherein the three types of data markers are used for marking data of a mobile energy storage system in a;
the industrial personal computer displays the waveform or trend of the corresponding data according to the first-class data marks, does not store the waveform or trend, stores and displays the corresponding data according to the second-class data marks, and remotely communicates and uploads the corresponding data to a remote server according to the third-class data marks.
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