WO2021000534A1 - 一种储能并机系统 - Google Patents

一种储能并机系统 Download PDF

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WO2021000534A1
WO2021000534A1 PCT/CN2019/126607 CN2019126607W WO2021000534A1 WO 2021000534 A1 WO2021000534 A1 WO 2021000534A1 CN 2019126607 W CN2019126607 W CN 2019126607W WO 2021000534 A1 WO2021000534 A1 WO 2021000534A1
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energy storage
battery
meter
ems
emu
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PCT/CN2019/126607
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English (en)
French (fr)
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刘鲁健
张星
张新艳
袁宏亮
王珺
林栋�
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沃太能源南通有限公司
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Publication of WO2021000534A1 publication Critical patent/WO2021000534A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means

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  • the invention belongs to the field of energy efficiency management, and specifically relates to an energy storage parallel system.
  • the energy storage parallel system is used to meet the customer's requirements for equipment in different power sections, and the cost is low. It can be realized by simply superimposing the equipment in different power sections. However, the power section is satisfied. How to manage these N energy storage system units? It is not as simple as a single energy storage system for power control. He has to manage these N energy storage units, and the system is in the same pace and cannot convert energy waste back and forth. Electricity is a problem that needs to be solved.
  • the purpose of the present invention is to solve the deficiencies in the prior art and provide a power control scheme for energy storage parallel system to adjust the output power of each energy storage unit.
  • the advantages of the present invention are on the premise of meeting the power demand of customers Next, each energy storage unit is dynamically adjusted so that the steps of each energy storage unit are consistent, and the power amount tends to be consistent, so that each energy storage unit can operate stably for a long time.
  • the energy storage parallel system of the present invention is composed of a meter, an EMS system and several energy storage units, and the EMS system communicates with the meter by means of RS485 communication , EMS system uses CAN communication to communicate with several energy storage units;
  • the Meter is an electric meter, which reads data from the customer's home appliance meter and transmits the data to the EMS system;
  • the energy storage unit collects internal data of the battery and sends it to the EMS system;
  • the EMS system collects the data in the energy storage unit and the meter to analyze the customer's electricity consumption and the load of the customer's home.
  • the energy storage unit is composed of EMU, PCS, and BMU, each EMU can independently complete the internal communication of the energy storage unit, the EMU communicates with the BMU by CAN communication, and the EMU communicates with the PCS by RS485 communication;
  • the PCS is an energy storage converter that can control the charging and discharging process of the battery, perform AC-DC conversion, and can directly supply power to the AC load when there is no power grid.
  • the BMS is a battery management unit, mainly to improve the utilization of the battery, prevent the battery from being overcharged and overdischarged, extend the service life of the battery, and monitor the state of the battery.
  • the present invention discloses an energy storage parallel system, which not only solves the user's demand for equipment in different power sections, but also achieves cost reduction.
  • the consistency, balance and stability of each energy storage unit of the energy storage parallel system For sexual purposes, the actual operation results of the energy storage parallel system are good, which is to make the electric energy distribution more reasonable, more energy-saving, and ensure the effective operation of the loads of each customer.
  • FIG. 1 is a system diagram of the invention
  • Figure 2 shows the Pmeter power attenuation curve
  • the energy storage parallel system is composed of a Meter, an EMS system and several energy storage units.
  • the EMS system uses RS485 communication to communicate with the Meter.
  • EMS The system uses CAN communication to communicate with several energy storage units;
  • the Meter is an electric meter, which reads data from the customer's home appliance meter and transmits the data to the EMS system;
  • the energy storage unit collects internal data of the battery and sends it to the EMS system;
  • the EMS system collects the data in the energy storage unit and the meter to analyze the customer's electricity consumption and the load of the customer's home.
  • the energy storage unit is composed of EMU, PCS, and BMU.
  • Each EMU can separately complete the internal communication of the energy storage unit.
  • the EMU communicates with the BMU by CAN communication, and the EMU communicates with the PCS by RS485 communication;
  • the PCS is an energy storage converter that can control the charging and discharging process of the battery, perform AC-DC conversion, and can directly supply power to AC loads when there is no power grid.
  • the BMS is a battery management unit, which mainly improves the utilization of the battery, prevents the battery from overcharging and overdischarging, prolongs the service life of the battery, and monitors the status of the battery.
  • the internal EMUx of the energy storage system unit generally communicates with the BMU in the CAN communication mode, and communicates with the PCS in the RS485 communication mode. This topology will not change due to the external use of different battery and inverter manufacturers, because each EMU can independently complete the internal communication of the energy storage unit;
  • the EMS system analyzes the customer's home appliance meter data to analyze the load of the customer's home.
  • PCS power response time is 100ms. This speed is fast and can eliminate the problem of PCS output power output lag. If each energy storage unit cannot output power at the same time, it will also cause system oscillation. Therefore, this is the reason why we use CAN parallel. After the EMS system calculates the power, the EMS system software must be issued to each energy storage unit at the same time; Oscillation caused by the output lag of the energy storage unit.
  • the EMS system will obtain the SOCx of each cluster of batteries through the EMU; the EMS system uses the following two formulas to calculate the output power of each energy storage unit;
  • Pinvx (SOCx/(SOC1+SOC2+...SOCn))*Pinv;
  • Pinvx ((100-SOCx)/(n*100-(SOC1+SOC2+...SOCn)))*Pinv;
  • the example uses three energy storage units in parallel to form an energy storage parallel system:
  • Pinv1 1.9kw
  • Pinv2 3.1kw
  • Pinv3 5.0kw
  • the present invention not only solves the needs of users for equipment in different power sections, but also achieves cost reduction.
  • the consistency, balance and stability of the energy storage units of the energy storage parallel system are achieved.
  • the actual operation results of the energy storage parallel system are good.
  • the power distribution is more reasonable, more energy-saving, to ensure the effective operation of the load of each customer.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

一种储能并机系统，所述储能并机系统是由Meter、EMS系统以及若干个储能单元构成，所述EMS系统采用RS485的通讯方式与Meter进行通信，EMS系统采用CAN通讯方式与若干个储能单元通信。该储能并机系统，既解决了用户对不同功率段设备的需求，也达到了降低成本。

Description

一种储能并机系统 技术领域
本发明属于及能效率管理领域，具体涉及一种储能并机系统。
背景技术
近年来，随着科学技术的发展，人民生活水平的提高，而环境污染逐日加剧。人民对清洁环境的需求越来越得到重视。而环境污染部分主要来源发电厂的燃烧废气、雾霾。如何高效使用清洁能源造福于人民显得越来越重要。储能系统在此应运而生，得到大批量的应用。但是由于各地域的发展水平和居住人口的不同，人民对不同功率段的储能系统的需求也不同。大部分户用储能系统都是5kw的，但是有的工厂、村庄等用电需求功率段增加，目前大部分逆变器供应商都生产主流的逆变器，不会单独生产一台功率段的设备而且需求量很少，包括以后如果这个功率段的设备需求不多，逆变器供应商也不会生产，而定制化生产有成本高昂。如何在现有的条件下满足客户各个功率段的储能系统的需求显得尤为重要。
因此，用储能并机系统来满足客户对不同功率段的设备的需求，成本低廉，只需把不同功率段的设备简单叠加就可以实现。但是，功率段满足了，如何管理这N个储能系统单元，它不像单个储能系统那样简单功率控制，他要管理这个N个储能单元，而且系统的步调一致，不能来回转换能量浪费电，是需要解决的问题。
发明内容
发明目的：本发明的目的是为了解决现有技术中的不足，提供一个储能并机系统功率控制的方案来调节各个储能单元的输出功率，本发明的优点在满足客户用电功率需求的前提下，动态调节各个储能单元，使得各个储能单元步调 一致，电量趋于一致，使得各个储能单元长期稳定的运行。
技术方案：本发明所述的一种储能并机系统，所述储能并机系统是由Meter、EMS系统以及若干个储能单元构成，所述EMS系统采用RS485的通讯方式与Meter进行通信，EMS系统采用CAN通讯方式与若干个储能单元通信；
所述Meter为电表，读取客户家电表数据，并将数据输送给EMS系统中；
所述储能单元收集电池的内部数据输送给EMS系统中；
所述EMS系统采集储能单元及Meter中的数据来分析客户用电情况及负载客户家负载大小。
优选的，所述储能单元是由EMU、PCS、BMU组成，每个EMU都可以单独完成储能单元内部的通信，EMU采用CAN通讯方式与BMU通信、EMU采用RS485通讯方式与PCS通信；
优选的，所述PCS为储能变流器可控制蓄电池的充电和放电过程，进行交直流的变换，在无电网情况下可以直接为交流负荷供电。
优选的，所述BMS为电池管理单元，主要就是提高电池的利用率，防止电池出现过充电和过放电，延长电池的使用寿命，监控电池的状态。
有益效果：本发明揭示了一种储能并机系统，既解决了用户对不同功率段设备的需求，也达到了降低成本，储能并机系统各储能单元的一致性，均衡性、稳定性目的，储能并机系统实际运行结果良好，是电能分配更加合理，更加节能，保证各客户家负载的有效运行。
附图说明
图1为发明的系统图；
图2为Pmeter功率衰减曲线；
具体实施方式
如图1所示的一种储能并机系统，所述储能并机系统是由Meter、EMS系统以及若干个储能单元构成，所述EMS系统采用RS485的通讯方式与Meter进行通信，EMS系统采用CAN通讯方式与若干个储能单元通信；
所述Meter为电表，读取客户家电表数据，并将数据输送给EMS系统中；
所述储能单元收集电池的内部数据输送给EMS系统中；
所述EMS系统采集储能单元及Meter中的数据来分析客户用电情况及负载客户家负载大小。
本实例中，所述储能单元是由EMU、PCS、BMU组成，每个EMU都可以单独完成储能单元内部的通信，EMU采用CAN通讯方式与BMU通信、EMU采用RS485通讯方式与PCS通信；
本实例中，所述PCS为储能变流器可控制蓄电池的充电和放电过程，进行交直流的变换，在无电网情况下可以直接为交流负荷供电。
本实例中，所述BMS为电池管理单元，主要就是提高电池的利用率，防止电池出现过充电和过放电，延长电池的使用寿命，监控电池的状态。
所述储能系统单元内部EMUx一般采用CAN通讯方式与BMU通信，采用RS485通讯方式与PCS通信。这种拓扑结构并不会因为不同电池、逆变器厂家采用的对外采用的方式所改变，因为每个EMU都可以单独完成储能单元内部的通信；
储能并机系统功率分配控制介绍，包括如下内容：
S1、EMS系统分析客户家电表数据，来分析客户家负载大小，计算负载功率公式为Pload＝Pmeter+Pinv；其中Pload负载功率，Pmeter是电表功率，Pinv是储能并机系统输出功率。
S2、如果Pinv＝Pload，那么Pmeter＝0；这是我们的期望结果。因为Pload 是变化的，我们期望Pinv一直跟随Pload变化而变化，从而达到Pmeter＝0的目的。如果直接输出Pinv＝Pload，那么由于Pmeter滞后于Pinv，这样调节会引起系统振荡，影响客户用电。我们用这个公式Pinv＝Pinv’+Pmeter/adj；来调节Pinv从而达到解决系统不停的振荡问题；其中Pinv’是储能并机系统上一次输出功率值，其中adj是调节斜率，adj太大同样会引起系统振荡，调节时间段，adj小调节时间长，实时性就会降低。通过调节adj来达到最优时间系统输出稳定并且Pmeter＝0的效果，如图2所示。
S3、PCS功率响应时间是100ms。这个速度很快，可以排除PCS输出功率输出滞后的问题。如果各个储能单元不能同时输出功率，同样会引起系统振荡，所以这是我们采用CAN并机的原因，在EMS系统计算出功率之后EMS系统软件要同时下发给各个储能单元；才能保证不被储能单元输出滞后引起的振荡。
S4、EMS系统会通过EMU获取每一簇电池的SOCx；EMS系统采用如下两个公式来计算出各个储能单元的输出功率；
放电：
Pinvx＝(SOCx/(SOC1+SOC2+...SOCn))*Pinv；
充电：
Pinvx＝((100-SOCx)/(n*100-(SOC1+SOC2+...SOCn)))*Pinv；
实例采用三个储能单元并机组成一个储能并机系统：
SOC1＝30％,SOC2＝50％，SOC3＝80％，
放电时Pinv＝10.0kw；充电时Pinv＝-10.0kw；
放电：Pinv1＝1.9kw，Pinv2＝3.1kw，Pinv3＝5.0kw；
充电：Pinv1＝5.0kw，Pinv2＝3.6kw，Pinv3＝1.4kw；
本发明既解决了用户对不同功率段设备的需求，也达到了降低成本，储能 并机系统各储能单元的一致性，均衡性、稳定性目的，储能并机系统实际运行结果良好，是电能分配更加合理，更加节能，保证各客户家负载的有效运行。
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (4)

  1. 一种储能并机系统，其特征在于：所述储能并机系统是由Meter、EMS系统以及若干个储能单元构成，所述EMS系统采用RS485的通讯方式与Meter进行通信，EMS系统采用CAN通讯方式与若干个储能单元通信；
    所述Meter为电表，读取客户家电表数据，并将数据输送给EMS系统中；
    所述储能单元收集电池的内部数据输送给EMS系统中；
    所述EMS系统采集储能单元及Meter中的数据来分析客户用电情况及负载客户家负载大小。
  2. 根据权利要求1所述的一种储能并机系统，其特征在于：所述储能单元是由EMU、PCS、BMU组成，每个EMU都可以单独完成储能单元内部的通信，EMU采用CAN通讯方式与BMU通信、EMU采用RS485通讯方式与PCS通信。
  3. 根据权利要求1所述的一种储能并机系统，其特征在于：所述PCS为储能变流器可控制蓄电池的充电和放电过程，进行交直流的变换，在无电网情况下可以直接为交流负荷供电。
  4. 根据权利要求1所述的一种储能并机系统，其特征在于：所述BMS为电池管理单元，主要就是提高电池的利用率，防止电池出现过充电和过放电，延长电池的使用寿命，监控电池的状态。
PCT/CN2019/126607 2019-06-29 2019-12-19 一种储能并机系统 WO2021000534A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024114387A1 (zh) * 2022-11-29 2024-06-06 厦门海辰储能科技股份有限公司 储能系统及储能系统的功率分配方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110212563B (zh) * 2019-06-29 2023-05-05 沃太能源股份有限公司 一种储能并机系统
CN111244996B (zh) * 2020-03-24 2021-10-22 北京双登慧峰聚能科技有限公司 储能并网控制系统及控制方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102598454A (zh) * 2009-11-30 2012-07-18 京瓷株式会社 控制装置和控制方法
CN104158297A (zh) * 2014-09-04 2014-11-19 上海太阳能科技有限公司 一种基于能量管理的复合能源结构微电网监控平台
CN106992590A (zh) * 2017-05-25 2017-07-28 沃太能源南通有限公司 一种多逻辑组合型光伏储能管理系统
US20180166878A1 (en) * 2016-12-14 2018-06-14 Nec Laboratories America, Inc. Machine Learning Based Demand Charge
CN108258708A (zh) * 2017-12-28 2018-07-06 浙江正泰新能源开发有限公司 一种带削峰填谷与调需策略的储能系统及其控制方法
CN109698513A (zh) * 2019-01-25 2019-04-30 格林美股份有限公司 集装箱式储能电站
CN110212563A (zh) * 2019-06-29 2019-09-06 沃太能源南通有限公司 一种储能并机系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103337869B (zh) * 2013-07-17 2016-04-20 国家电网公司 一种新型电池储能系统及其功能一体化设计的方法
CN203933136U (zh) * 2014-02-21 2014-11-05 沃太能源南通有限公司 新型家用储能系统控制器
US11063431B2 (en) * 2014-07-04 2021-07-13 Apparent Labs Llc Hierarchical and distributed power grid control
CN204649878U (zh) * 2015-06-17 2015-09-16 姜进 配变进出线负荷比对系统
CN105529793B (zh) * 2015-10-08 2017-03-22 李庄 一种同时作为应急供电源的电动汽车群充电微网的控制方法
CN205489679U (zh) * 2016-03-17 2016-08-17 北京中电飞华通信股份有限公司 基于家庭能源管理的户用微电网系统
CN106026151B (zh) * 2016-05-19 2020-04-10 国网山东省电力公司青岛供电公司 一种电动车储换电站的调度方法及装置
DE102017118958A1 (de) * 2017-08-18 2019-02-21 Christian Schuch Energiemanagementsystem-Vorrichtung und ein Energiemanagementsystem-Verfahren
CN107634542B (zh) * 2017-11-06 2020-05-22 阳光电源股份有限公司 一种新能源发电系统的并网功率平滑控制方法及控制器
CN108347067B (zh) * 2018-05-07 2024-01-05 江苏林洋能源股份有限公司 一种含有电池储能和发电机的微网架构和控制方法
CN109193776B (zh) * 2018-10-08 2020-05-01 江苏纳通能源技术有限公司 一种适用于梯次电池储能的功率分配方法
CN109120012B (zh) * 2018-10-18 2021-01-22 江苏纳通能源技术有限公司 单相混合储能逆变器的多机并行系统及控制方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102598454A (zh) * 2009-11-30 2012-07-18 京瓷株式会社 控制装置和控制方法
CN104158297A (zh) * 2014-09-04 2014-11-19 上海太阳能科技有限公司 一种基于能量管理的复合能源结构微电网监控平台
US20180166878A1 (en) * 2016-12-14 2018-06-14 Nec Laboratories America, Inc. Machine Learning Based Demand Charge
CN106992590A (zh) * 2017-05-25 2017-07-28 沃太能源南通有限公司 一种多逻辑组合型光伏储能管理系统
CN108258708A (zh) * 2017-12-28 2018-07-06 浙江正泰新能源开发有限公司 一种带削峰填谷与调需策略的储能系统及其控制方法
CN109698513A (zh) * 2019-01-25 2019-04-30 格林美股份有限公司 集装箱式储能电站
CN110212563A (zh) * 2019-06-29 2019-09-06 沃太能源南通有限公司 一种储能并机系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024114387A1 (zh) * 2022-11-29 2024-06-06 厦门海辰储能科技股份有限公司 储能系统及储能系统的功率分配方法

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