Inverter connected battery technology with advanced fault ride through capability on LV grid system to help offset the need for standby generation

逆变器连接电池技术在低压电网系统上具有先进的故障穿越功能，有助于抵消备用发电的需求

• 批准号: EP/I008764/1
• 负责人: Dani Strickland
• 金额: $ 12.51万
• 依托单位: Aston University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2010
• 资助国家: 英国
• 起止时间: 2010 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FI008764%2F1
• 关键词: Inverter; connected; battery; technology; advanced

There are significant changes within both the transport and electricity industries that mean that significant work needs to happen to ensure that the components that will make up the new smart grid concept are available in a timely manner. At present dynamic voltage restorers and UPS systems are available to assist the consumer with power quality issues. However, it is now appropriate timing to consider using modified battery/inverter power conditioning systems (PCS) to provide much more in the way of grid support (even though this is not necessarily an option currently supported by standards). The aim of the project is to model, prototype and test a power electronic inverter system which interfaces used car batteries (or vehicles with EV batteries) to an electricity grid system, which is designed to meet the following key requirements; low cost, reliable, easily reproducible, single phase operation (leading to three phase operation), able to charge and discharge batteries safely and to provide enhanced DER (Distributed Energy Resource) functionality to support smart grid functionality.The research will focus on the more advanced features of the enhanced DER functionality:1. Advanced condition monitoring of the batteries to ensure that they are optimally utilised to end of life. At present there are several techniques available which look at battery SOC (state of charge). EIS (Electrochemical Impedance Spectroscopy) measurements are widely used with relation to determining battery health. However, EIS has traditionally been slow to commute. New techniques published over the last few years show that there is now the possibility of including the EIS measurement within the power electronics and choosing to undertake the processing within the power electronic DSP. This will save on hardware costs and give a very accurate indication as to the health of the battery.2. Fault ride through and voltage support to help with stability issues.Standards in the UK and the USA request that connected generation drop out on island detection and under voltage detection. This has led to the blackouts that have been seen over the past ten years in Europe and USA. Within the EU there are a number of countries all of which have slightly different fault ride through capability. To ensure that power electronics can assist with voltage support the power conditioning systems needs to be able to meet all these requirements rather than the less onerous ones that are in the current standards. This leads to the need to develop the control strategy to deal with this.3. Fast response spinning reserve support. Battery systems are capable of reacting quickly to changes in frequency and responding over a sufficient time scale to assume the role of a spinning generator. Lumped systems could represent a big load reduction at a substation acting in the same way as an increase in generation at a substation. There is scope to modify the control system to determine when primary responce spinning load is needed and react appropriately.4. Communication to a smart grid system Any future system that will integrate with a smart grid system will need to be able to communicate with a controller whether this be a residential power controller or an industrial power controller. The PCS will be required to pass information that assists with the collation of data at the operations centre such as the battery availability, condition monitoring information (eg temperatures) or fault information. 5. Power Quality correctionThere is much published literature on power quality problems and UPS and DVR systems have been developed to deal with these. The battery/inverter system suggested is capable of assuming this responsibility for active power quality management.

交通和电力行业都发生了重大变化，这意味着需要开展大量工作，以确保构成新智能电网概念的组件及时可用。目前，动态电压恢复器和UPS系统可用于帮助消费者解决电能质量问题。然而，现在是考虑使用改进的电池/逆变器功率调节系统（PCS）以提供更多电网支持的适当时机（尽管这不一定是当前标准支持的选项）。该项目的目的是建立模型，原型和测试一个电力电子逆变器系统的接口使用的汽车电池（或装有电动汽车电池的车辆）接入电网系统，该系统旨在满足以下关键要求;低成本、可靠、易于复制、单相运行（导致三相操作），能够安全地对电池进行充电和放电，并提供增强的DER（分布式能源）功能来支持智能电网功能。研究将集中在增强的DER功能的更先进的功能：1.先进的电池状态监控，确保电池在使用寿命结束时得到最佳利用。目前，有几种技术可用于查看电池SOC（充电状态）。EIS（电化学阻抗谱）测量广泛用于确定电池健康状况。然而，传统上，EIS通勤缓慢。在过去几年中发表的新技术表明，现在有可能将EIS测量包括在电力电子设备中，并选择在电力电子DSP中进行处理。这将节省硬件成本，并给出一个非常准确的指示，以健康的电池。2.故障穿越和电压支持有助于解决稳定性问题。英国和美国的标准要求在孤岛检测和欠压检测时连接的发电机退出。这导致了过去十年在欧洲和美国发生的停电。在欧盟内部，有许多国家都具有略微不同的故障穿越能力。为了确保电力电子设备能够协助提供电压支持，电力调节系统需要能够满足所有这些要求，而不是当前标准中较不繁琐的要求。这就需要制定相应的控制策略来解决这一问题.快速响应旋转储备支持。电池系统能够对频率的变化做出快速反应，并在足够的时间尺度上做出响应，以承担旋转发电机的角色。集总系统可以代表变电站处的大的负载减少，其作用方式与变电站处的发电量增加相同。有修改控制系统的余地，以确定何时需要主要响应纺纱负载并做出适当反应。与智能电网系统的通信任何未来与智能电网系统集成的系统都需要能够与控制器通信，无论是住宅电力控制器还是工业电力控制器。PCS将被要求传递有助于在操作中心整理数据的信息，例如电池可用性、状态监测信息（例如温度）或故障信息。5.电能质量校正有很多关于电能质量问题的出版文献，UPS和DVR系统已经被开发出来处理这些问题。所建议的电池/逆变器系统能够承担主动电能质量管理的责任。

项目成果

Adaptive control of hybrid battery energy storage systems under capacity fade

容量衰减下混合动力电池储能系统的自适应控制

• DOI: 10.1109/epe.2014.6910874
• 发表时间: 2014
• 作者: Mukherjee N

Control of Second-Life Hybrid Battery Energy Storage System Based on Modular Boost-Multilevel Buck Converter

基于模块化升压-多电平降压变换器的二次寿命混合电池储能系统控制

• DOI: 10.1109/tie.2014.2341598
• 发表时间: 2015
• 期刊: IEEE Transactions on Industrial Electronics
• 影响因子: 7.7
• 作者: Mukherjee N

Modular ESS with second life batteries operating in grid independent mode

具有二次电池的模块化 ESS，以独立于电网的模式运行

• DOI: 10.1109/pedg.2012.6254072
• 发表时间: 2012
• 作者: Mukherjee N