WO2019205949A1 - Smart on-line capacity-checking discharge control apparatus for storage battery - Google Patents

Smart on-line capacity-checking discharge control apparatus for storage battery Download PDF

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Publication number
WO2019205949A1
WO2019205949A1 PCT/CN2019/082251 CN2019082251W WO2019205949A1 WO 2019205949 A1 WO2019205949 A1 WO 2019205949A1 CN 2019082251 W CN2019082251 W CN 2019082251W WO 2019205949 A1 WO2019205949 A1 WO 2019205949A1
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Prior art keywords
unit
inverter
inverter unit
discharge control
main controller
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PCT/CN2019/082251
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French (fr)
Chinese (zh)
Inventor
邱育义
简志超
郭志军
刘建锋
陈转银
苏华锋
张建华
吴汝豪
孙德兴
吴春玉
吴嘉竣
陈振良
徐锡斌
熊伟标
周凯锋
尹照新
李锦图
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Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
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Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
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Publication of WO2019205949A1 publication Critical patent/WO2019205949A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285—Testing apparatus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to the field of DC power system discharge, and more particularly to an intelligent battery online nuclear discharge control device.
  • the important component of the DC power system is the battery. Its stability, operating status and longevity are all concerned by everyone. As the battery is used for a long time, its capacity will decrease with the use time, and according to the battery pack nuclear test, the battery should be discharged once every other time.
  • the form of discharge is converted into heat consumption by a discharge meter, which is a waste of energy.
  • the object of the present invention is to solve one or more of the above drawbacks, and to design an intelligent battery online nuclear discharge control device.
  • An intelligent battery online nuclear discharge control device comprises a centralized monitoring unit, a main controller unit, an inverter unit 1, an inverter unit 2 and a battery; wherein the centralized monitoring unit and the inverter unit 1 perform data interaction,
  • the transformer unit 1 is electrically connected to the positive pole of the battery;
  • the centralized monitoring unit performs data interaction with the main controller unit, the main controller unit and the inverter unit 2 perform data interaction, and the inverter unit 2 is connected with the negative pole of the battery, and the inverter The unit 2 is simultaneously connected to the AC grid.
  • the centralized monitoring unit and the inverter unit 1 are connected by a 485 line.
  • the inverter unit 1 comprises a charger.
  • the main controller unit and the inverter unit 2 are connected by a 485 line.
  • the inverter unit 2 comprises three inverters of single phase output, which are used in parallel on the battery bus.
  • the three inverters are both built-in processors and inverters with display screens.
  • the three inverters adopt a DC/DC-DC/AC link structure, wherein the front stage DC/DC realizes isolation of the DC input and the AC output.
  • the main controller unit is connected to the background server via Ethernet.
  • the intelligent battery online nuclear discharge control device mainly includes two main parts: the main controller and the inverter.
  • the main controller is the core part of the intelligent control.
  • the function of the nuclear discharge can be set to manual or automatic (timed) according to the needs. Both methods can perform normal nuclear discharge.
  • the main controller communicates with the centralized monitoring device to obtain the current state of the charger, and disconnects the charger and the battery pack through the centralized monitoring device.
  • the main controller confirms that the charger has no current flowing into the battery, it can control the inverter to start the nuclear discharge.
  • the inverter converts the DC of the battery into a three-phase current of 50 Hz and supplies it to the power supply network in the station in the substation, making full use of the energy of the discharge.
  • the battery can be discharged without being discharged
  • FIG. 1 is a system structure diagram of the present invention
  • An intelligent battery online nuclear discharge control device comprises a centralized monitoring unit, a main controller unit, an inverter unit 1, an inverter unit 2 and a battery; wherein the centralized monitoring unit and the inverter unit 1 perform data interaction,
  • the transformer unit 1 is electrically connected to the positive pole of the battery;
  • the centralized monitoring unit performs data interaction with the main controller unit, the main controller unit and the inverter unit 2 perform data interaction, and the inverter unit 2 is connected with the negative pole of the battery, and the inverter The unit 2 is simultaneously connected to the AC grid.
  • the centralized monitoring unit and the inverter unit 1 are connected by a 485 line.
  • the main controller unit and the inverter unit 2 are connected by 485 lines.
  • the centralized monitoring unit and the inverter unit 1 are connected by a 485 line.
  • the inverter unit 1 includes a charger.
  • the main controller unit and the inverter unit 2 are connected by 485 lines.
  • the inverter unit 2 includes three single-phase output inverters, which are used in parallel on the battery bus to serve as a discharge controlled end of the monitoring host.
  • the monitoring host needs to initiate the control command, let the centralized monitoring perform the voltage regulation, and temporarily cannot charge the battery, then the monitoring host then controls the inverter device to discharge the 0.1C current to the grid in the station, and monitor the host.
  • the discharge capacity reaches 50% of the rated capacity, the discharge is stopped, and the discharge is completed. The entire discharge process can be completed without exiting the battery pack, that is, the form of online discharge.
  • the three inverters are all built-in processors and inverters with display screens.
  • the grid-connected inverter adopts DSP digital control technology and high-frequency soft-switching technology, which has high efficiency and high reliability; the inverter DC input and AC output are completely electrically isolated to meet the relevant requirements of the power industry.
  • the main parameters are as follows:
  • VDC DC rated input voltage
  • VDC Voltage allowable range
  • Protection function input under/overvoltage protection, self-recovery; output overload protection, self-recovery; over-temperature protection, self-recovery;
  • Dry contact Normally open or normally closed point is optional
  • the three inverters all adopt a DC/DC-DC/AC link structure, wherein the front stage DC/DC realizes isolation of the DC input and the AC output.
  • the input DC first passes through the input EMI filter, and then isolates the output 760V DC ( ⁇ 380VDC) through the LLC full-bridge resonant converter, and then converts the 760V DC into the same frequency and the same frequency as the AC bypass through the half-bridge inverter circuit. Amplitude voltage.
  • the grid-connected inverter works as an AC current source, and converts the DC energy into AC energy to the grid according to the set power (current). The working principle is as shown in Fig. 2.
  • the main controller unit is connected to the background server through an Ethernet.
  • the main control unit further includes a monitoring terminal and a measurement module. Users can monitor and configure parameters of remote devices through the background server. When it is necessary to discharge, it only needs to operate in the background server to trigger the discharge, and the discharge state of the front end can be monitored at any time.
  • the battery monitoring host After receiving the discharge command, the battery monitoring host first sends a voltage regulation command to the DC system centralized monitoring device to adjust the floating charging voltage to the discharge cutoff voltage. At this time, the DC system load is supplied by the battery, and the battery monitoring system controls the inverter load current by collecting the battery outlet current so that:
  • Inverter load current + load current 0.1C achieves 0.1C discharge to the battery.
  • the active inverter technology is used to realize the feedback-type discharge.
  • the AC side of the inverter device adopts the power grid in the three-phase AC access station, and the phase of each phase of the output is automatically synchronized.
  • the inverter efficiency is greater than 90%.
  • the inverter current control mode is: sending command control through the serial port.
  • the intelligent battery online nuclear discharge control device mainly includes two main parts: the main controller and the inverter.
  • the main controller is the core part of the intelligent control.
  • the function of the nuclear discharge can be set to manual or automatic (timed) according to the needs. Both methods can perform normal nuclear discharge.
  • the main controller communicates with the centralized monitoring device to obtain the current state of the charger, and disconnects the charger and the battery pack through the centralized monitoring device.
  • the main controller confirms that the charger has no current flowing into the battery, it can control the inverter to start the nuclear discharge.
  • the inverter converts the DC of the battery into a three-phase current of 50 Hz and supplies it to the power supply network in the station in the substation, making full use of the energy of the discharge.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Disclosed is a smart on-line capacity-checking discharge control apparatus for a storage battery. The apparatus comprises a centralized monitoring unit, a main controller unit, an inverter unit 1, an inverter unit 2 and a storage battery, wherein the centralized monitoring unit and the inverter unit 1 carry out data interaction, and the inverter unit 1 is electrically connected to an anode of the storage battery; the centralized monitoring unit and the main controller unit carry out data interaction, and the main controller unit and the inverter unit 2 carry out data interaction; and the inverter unit 2 is connected to a cathode of the storage battery, and the inverter unit 2 simultaneously accesses an alternating-current power grid. According to the present invention, capacity-checking discharge can be carried out with no need for quitting, discharged power is rationally used, and the operation is easy with no need for a worker to be on-site for intervention.

Description

一种智能蓄电池在线核容放电控制装置Intelligent battery online nuclear discharge control device 技术领域Technical field

本发明涉及直流电源系统放电领域，更具体地，涉及一种智能蓄电池在线核容放电控制装置。The invention relates to the field of DC power system discharge, and more particularly to an intelligent battery online nuclear discharge control device.

背景技术Background technique

直流电源系统的重要组成部分即蓄电池，它的稳定性、运行状态、寿命都是比较受大家的关注。随着蓄电池的使用时间推移，它的容量也会随着使用时间降低，并且根据蓄电池组核容试验的规定，蓄电池应该隔一段时间就进行一次蓄电池的核容放电。The important component of the DC power system is the battery. Its stability, operating status and longevity are all concerned by everyone. As the battery is used for a long time, its capacity will decrease with the use time, and according to the battery pack nuclear test, the battery should be discharged once every other time.

从目前了解的情况看，目前国内有较多蓄电池蓄电池核容放电方面的专利以及期刊等相关的技术方案。但是目前常用的方案，基本都需要把蓄电池组退出，然后进行离线放电，这样做的缺点主要有：Judging from the current situation, there are many patents and periodicals and other related technical solutions for battery storage and discharge in China. However, the commonly used solutions basically need to withdraw the battery pack and then discharge it offline. The main disadvantages of this are:

1、进行核容放电的时候，蓄电池需要退出运行。1. When performing nuclear discharge, the battery needs to be out of operation.

2、放电的形式是通过放电仪转化为热量消耗，也就是浪费能源。2. The form of discharge is converted into heat consumption by a discharge meter, which is a waste of energy.

3、核容放电操作麻烦，人工成本较高。3. The nuclear capacity discharge operation is troublesome and the labor cost is high.

发明内容Summary of the invention

本发明的目的是解决上述一个或多个缺陷，设计一种智能蓄电池在线核容放电控制装置。The object of the present invention is to solve one or more of the above drawbacks, and to design an intelligent battery online nuclear discharge control device.

为实现以上发明目的，采用的技术方案是：In order to achieve the above object, the technical solution adopted is:

一种智能蓄电池在线核容放电控制装置，包括集中监控单元、主控制器单元、逆变器单元1、逆变器单元2和蓄电池；其中集中监控单元与逆变器单元1进行数据交互，逆变器单元1与蓄电池的正极电连接；集中监控单元与主控制器单元进行数据交互，主控制器单元与逆变器单元2进行数据交互，逆变器单元2与蓄电池的负极连接，逆变器单元2同时接入交流电网。An intelligent battery online nuclear discharge control device comprises a centralized monitoring unit, a main controller unit, an inverter unit 1, an inverter unit 2 and a battery; wherein the centralized monitoring unit and the inverter unit 1 perform data interaction, The transformer unit 1 is electrically connected to the positive pole of the battery; the centralized monitoring unit performs data interaction with the main controller unit, the main controller unit and the inverter unit 2 perform data interaction, and the inverter unit 2 is connected with the negative pole of the battery, and the inverter The unit 2 is simultaneously connected to the AC grid.

优选的是，所述集中监控单元与逆变器单元1之间通过485线进行连接。Preferably, the centralized monitoring unit and the inverter unit 1 are connected by a 485 line.

优选的是，所述逆变器单元1包括充电机。Preferably, the inverter unit 1 comprises a charger.

优选的是，所述主控制器单元与逆变器单元2之间通过485线连接。Preferably, the main controller unit and the inverter unit 2 are connected by a 485 line.

优选的是，所述逆变器单元2包括三个单相输出的逆变器，所述三个逆变器 并联在蓄电池母线上使用。Preferably, the inverter unit 2 comprises three inverters of single phase output, which are used in parallel on the battery bus.

优选的是，所述三个逆变器均为内置处理器和带有显示屏的逆变器。Preferably, the three inverters are both built-in processors and inverters with display screens.

优选的是，所述三个逆变器均采用DC/DC-DC/AC链接结构，其中前级DC/DC实现直流输入和交流输出的隔离。Preferably, the three inverters adopt a DC/DC-DC/AC link structure, wherein the front stage DC/DC realizes isolation of the DC input and the AC output.

优选的是，所述主控制器单元通过以太网与后台服务器连接。Preferably, the main controller unit is connected to the background server via Ethernet.

智能蓄电池在线核容放电控制装置则主要包括主控制器，逆变器两大部分。主控制器，是体现智能控制的核心部分，可根据需要，将核容放电的功能设置为手动，或者为自动(定时进行)，两种方式都可以进行正常的核容放电。当进行核容放电的时候，主控制器会与集中监控装置进行通信，获取当前充电机的状况，并通过集中监控装置使充电机和蓄电池组断开。当主控制器确认充电机已经没有电流流入蓄电池后，即可控制逆变器开始进行核容放电。在放电过程中，逆变器会把蓄电池的直流转换为50HZ的三相电流再提供到变电站内的站内供电网，充分利用放电的能量。The intelligent battery online nuclear discharge control device mainly includes two main parts: the main controller and the inverter. The main controller is the core part of the intelligent control. The function of the nuclear discharge can be set to manual or automatic (timed) according to the needs. Both methods can perform normal nuclear discharge. When the nuclear capacity discharge is performed, the main controller communicates with the centralized monitoring device to obtain the current state of the charger, and disconnects the charger and the battery pack through the centralized monitoring device. When the main controller confirms that the charger has no current flowing into the battery, it can control the inverter to start the nuclear discharge. During the discharge process, the inverter converts the DC of the battery into a three-phase current of 50 Hz and supplies it to the power supply network in the station in the substation, making full use of the energy of the discharge.

与现有技术相比，本发明的有益效果是：Compared with the prior art, the beneficial effects of the present invention are:

1)蓄电池不需要退出即可进行核容放电；1) The battery can be discharged without being discharged;

2)对放电的电量合理利用；2) Reasonable use of the discharged electricity;

3)操作简单，不需要人工到现场进行干预。3) The operation is simple, and no manual intervention is required on site.

附图说明DRAWINGS

图1为本发明的系统结构图Figure 1 is a system structure diagram of the present invention

具体实施方式detailed description

附图仅用于示例性说明，不能理解为对本专利的限制；The drawings are for illustrative purposes only and are not to be construed as limiting the invention;

以下结合附图和实施例对本发明做进一步的阐述。The invention will be further described below in conjunction with the drawings and embodiments.

实施例1Example 1

一种智能蓄电池在线核容放电控制装置，包括集中监控单元、主控制器单元、逆变器单元1、逆变器单元2和蓄电池；其中集中监控单元与逆变器单元1进行数据交互，逆变器单元1与蓄电池的正极电连接；集中监控单元与主控制器单元进行数据交互，主控制器单元与逆变器单元2进行数据交互，逆变器单元2与蓄电池的负极连接，逆变器单元2同时接入交流电网。An intelligent battery online nuclear discharge control device comprises a centralized monitoring unit, a main controller unit, an inverter unit 1, an inverter unit 2 and a battery; wherein the centralized monitoring unit and the inverter unit 1 perform data interaction, The transformer unit 1 is electrically connected to the positive pole of the battery; the centralized monitoring unit performs data interaction with the main controller unit, the main controller unit and the inverter unit 2 perform data interaction, and the inverter unit 2 is connected with the negative pole of the battery, and the inverter The unit 2 is simultaneously connected to the AC grid.

本实施例中，所述集中监控单元与逆变器单元1之间通过485线进行连接。In this embodiment, the centralized monitoring unit and the inverter unit 1 are connected by a 485 line.

本实施例中，所述主控制器单元与逆变器单元2之间通过485线连接。In this embodiment, the main controller unit and the inverter unit 2 are connected by 485 lines.

本实施例中，所述集中监控单元与逆变器单元1之间通过485线进行连接。In this embodiment, the centralized monitoring unit and the inverter unit 1 are connected by a 485 line.

本实施例中，所述逆变器单元1包括充电机。In this embodiment, the inverter unit 1 includes a charger.

本实施例中，所述主控制器单元与逆变器单元2之间通过485线连接。In this embodiment, the main controller unit and the inverter unit 2 are connected by 485 lines.

本实施例中，所述逆变器单元2包括三个单相输出的逆变器，所述三个逆变器并联在蓄电池母线上使用，作为监控主机的放电受控端。系统正常浮充工作的时候，只需操作监控主机即可进行数据采集，内阻测量。当系统需要进行放电实验时，需要由监控主机发起调控命令，让集中监控进行调压，并暂时不能对蓄电池进行充电，然后监控主机再控制逆变装置进行0.1C电流放电至站内电网，监控主机监测到放电容量达到50％额定容量时，即停止放电，完成本次放电，整个放电过程都不需要退出电池组即可完成，也就是在线放电的形式。In this embodiment, the inverter unit 2 includes three single-phase output inverters, which are used in parallel on the battery bus to serve as a discharge controlled end of the monitoring host. When the system is normally floating, you only need to operate the monitoring host to perform data acquisition and internal resistance measurement. When the system needs to perform the discharge experiment, the monitoring host needs to initiate the control command, let the centralized monitoring perform the voltage regulation, and temporarily cannot charge the battery, then the monitoring host then controls the inverter device to discharge the 0.1C current to the grid in the station, and monitor the host. When the discharge capacity reaches 50% of the rated capacity, the discharge is stopped, and the discharge is completed. The entire discharge process can be completed without exiting the battery pack, that is, the form of online discharge.

本实施例中，所述三个逆变器均为内置处理器和带有显示屏的逆变器。并网逆变器采用DSP数字控制技术、高频软开关技术，效率高、可靠性高；逆变器直流输入与交流输出完全电气隔离，满足电力行业相关要求。主要参数如下：In this embodiment, the three inverters are all built-in processors and inverters with display screens. The grid-connected inverter adopts DSP digital control technology and high-frequency soft-switching technology, which has high efficiency and high reliability; the inverter DC input and AC output are completely electrically isolated to meet the relevant requirements of the power industry. The main parameters are as follows:

模块额定输出功率：5KVA；Module rated output power: 5KVA;

直流额定输入电压(VDC)：220VDC/110VDC；DC rated input voltage (VDC): 220VDC/110VDC;

电压允许范围(VDC)：198～286VDC/98～143VDC；Voltage allowable range (VDC): 198 ~ 286VDC / 98 ~ 143VDC;

保护功能：输入欠/过压保护，可自恢复；输出过载保护，可自恢复；过温保护，可自恢复；Protection function: input under/overvoltage protection, self-recovery; output overload protection, self-recovery; over-temperature protection, self-recovery;

通讯接口：485；Communication interface: 485;

通讯规约：MODBUS(默认)；Communication protocol: MODBUS (default);

干接点：常开或常闭点可选；Dry contact: Normally open or normally closed point is optional;

工作温度：-5～+40摄氏度；Working temperature: -5 to +40 degrees Celsius;

工作湿度：0到90％相对湿度，无冷凝；Working humidity: 0 to 90% relative humidity, no condensation;

本实施例中，所述三个逆变器均采用DC/DC-DC/AC链接结构，其中前级DC/DC实现直流输入和交流输出的隔离。输入直流先经过输入EMI滤波器后，通过LLC全桥谐振变换器，隔离输出760V左右直流(±380VDC)，再通过半桥逆变电路，将760V直流转换为与交流旁路同频同相和同幅电压。并网逆变器工作时相当于一个交流电流源，按照设定的功率(电流)将直流能量转换为交流能量回馈到电网中。工作原理如图2所述。In this embodiment, the three inverters all adopt a DC/DC-DC/AC link structure, wherein the front stage DC/DC realizes isolation of the DC input and the AC output. The input DC first passes through the input EMI filter, and then isolates the output 760V DC (±380VDC) through the LLC full-bridge resonant converter, and then converts the 760V DC into the same frequency and the same frequency as the AC bypass through the half-bridge inverter circuit. Amplitude voltage. The grid-connected inverter works as an AC current source, and converts the DC energy into AC energy to the grid according to the set power (current). The working principle is as shown in Fig. 2.

本实施例中，所述主控制器单元通过以太网与后台服务器连接。所述主控制 单元还包括监控终端和测量模块。用户可以通过后台服务器对远端设备进行监控、配置参数。需要放电的时候，只需要在后台服务端操作即可触发放电，并且可以随时监控着前端的放电状况。In this embodiment, the main controller unit is connected to the background server through an Ethernet. The main control unit further includes a monitoring terminal and a measurement module. Users can monitor and configure parameters of remote devices through the background server. When it is necessary to discharge, it only needs to operate in the background server to trigger the discharge, and the discharge state of the front end can be monitored at any time.

蓄电池监控主机在接收到放电指令后，蓄电池主机首先给直流系统集中监控装置发出调压指令，将浮充电压调整到放电截止电压。此时直流系统负荷由蓄电池供电，蓄电池监测系统通过采集蓄电池出口电流再控制逆变负载电流使得：After receiving the discharge command, the battery monitoring host first sends a voltage regulation command to the DC system centralized monitoring device to adjust the floating charging voltage to the discharge cutoff voltage. At this time, the DC system load is supplied by the battery, and the battery monitoring system controls the inverter load current by collecting the battery outlet current so that:

逆变负载电流+负荷电流＝0.1C实现对蓄电池的0.1C放电。Inverter load current + load current = 0.1C achieves 0.1C discharge to the battery.

在回馈式放电中，采用的是有源逆变技术实现回馈式放电，逆变装置的交流侧采用三相交流接入站内的电网，输出的每一相的相位都会自动同步。逆变效率大于90％。逆变电流控制方式为：通过串口发送命令控制。In the feedback-type discharge, the active inverter technology is used to realize the feedback-type discharge. The AC side of the inverter device adopts the power grid in the three-phase AC access station, and the phase of each phase of the output is automatically synchronized. The inverter efficiency is greater than 90%. The inverter current control mode is: sending command control through the serial port.

智能蓄电池在线核容放电控制装置则主要包括主控制器，逆变器两大部分。主控制器，是体现智能控制的核心部分，可根据需要，将核容放电的功能设置为手动，或者为自动(定时进行)，两种方式都可以进行正常的核容放电。当进行核容放电的时候，主控制器会与集中监控装置进行通信，获取当前充电机的状况，并通过集中监控装置使充电机和蓄电池组断开。当主控制器确认充电机已经没有电流流入蓄电池后，即可控制逆变器开始进行核容放电。在放电过程中，逆变器会把蓄电池的直流转换为50HZ的三相电流再提供到变电站内的站内供电网，充分利用放电的能量。The intelligent battery online nuclear discharge control device mainly includes two main parts: the main controller and the inverter. The main controller is the core part of the intelligent control. The function of the nuclear discharge can be set to manual or automatic (timed) according to the needs. Both methods can perform normal nuclear discharge. When the nuclear capacity discharge is performed, the main controller communicates with the centralized monitoring device to obtain the current state of the charger, and disconnects the charger and the battery pack through the centralized monitoring device. When the main controller confirms that the charger has no current flowing into the battery, it can control the inverter to start the nuclear discharge. During the discharge process, the inverter converts the DC of the battery into a three-phase current of 50 Hz and supplies it to the power supply network in the station in the substation, making full use of the energy of the discharge.

显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。It is apparent that the above-described embodiments of the present invention are merely illustrative of the present invention and are not intended to limit the embodiments of the present invention. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

Claims (8)

一种智能蓄电池在线核容放电控制装置，其特征在于，包括集中监控单元、主控制器单元、逆变器单元1、逆变器单元2和蓄电池；其中集中监控单元与逆变器单元1进行数据交互，逆变器单元1与蓄电池的正极电连接；集中监控单元与主控制器单元进行数据交互，主控制器单元与逆变器单元2进行数据交互，逆变器单元2与蓄电池的负极连接，逆变器单元2同时接入交流电网。An intelligent battery online nuclear discharge control device, comprising: a centralized monitoring unit, a main controller unit, an inverter unit 1, an inverter unit 2 and a battery; wherein the centralized monitoring unit and the inverter unit 1 perform Data interaction, the inverter unit 1 is electrically connected to the positive pole of the battery; the centralized monitoring unit performs data interaction with the main controller unit, the main controller unit performs data interaction with the inverter unit 2, and the inverter unit 2 and the negative pole of the battery Connected, the inverter unit 2 is simultaneously connected to the AC grid. 根据权利要求1所述的一种智能蓄电池在线核容放电控制装置，其特征在于，所述集中监控单元与逆变器单元1之间通过485线进行连接。The intelligent battery online nuclear discharge control device according to claim 1, wherein the centralized monitoring unit and the inverter unit 1 are connected by an 485 line. 根据权利要求2所述的一种智能蓄电池在线核容放电控制装置，其特征在于，所述逆变器单元1包括充电机。The intelligent battery online nuclear discharge control device according to claim 2, wherein the inverter unit 1 comprises a charger. 根据权利要求1所述的一种智能蓄电池在线核容放电控制装置，其特征在于，所述主控制器单元与逆变器单元2之间通过485线连接。The intelligent battery online nuclear discharge control device according to claim 1, wherein the main controller unit and the inverter unit 2 are connected by a 485 line. 根据权利要求4所述的一种智能蓄电池在线核容放电控制装置，其特征在于，所述逆变器单元2包括三个单相输出的逆变器，所述三个逆变器并联在蓄电池母线上使用。The intelligent battery online nuclear discharge control device according to claim 4, wherein the inverter unit 2 comprises three single-phase output inverters, and the three inverters are connected in parallel to the battery. Used on the bus. 根据权利要求5所述的一种智能蓄电池在线核容放电控制装置，其特征在于，所述三个逆变器均为内置处理器和带有显示屏的逆变器。The intelligent battery online nuclear discharge control device according to claim 5, wherein the three inverters are both a built-in processor and an inverter with a display screen. 根据权利要求6所述的一种智能蓄电池在线核容放电控制装置，其特征在于，所述三个逆变器均采用DC/DC-DC/AC链接结构，其中前级DC/DC实现直流输入和交流输出的隔离。The intelligent battery online nuclear discharge control device according to claim 6, wherein the three inverters adopt a DC/DC-DC/AC link structure, wherein the front stage DC/DC realizes a DC input. Isolation from AC output. 根据权利要求1所述的一种智能蓄电池在线核容放电控制装置，其特征在于，所述主控制器单元通过以太网与后台服务器连接。The intelligent battery online nuclear discharge control device according to claim 1, wherein the main controller unit is connected to the background server via Ethernet.
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