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光伏储能双概念,逆变器景气度提高

返回列表 来源: 研报hub 发布日期: 2022.06.16 浏览次数:

储能产业链(见下图):电池与储能逆变器(PCS)具有较高的投资价值: 储能系统由储能电池系统(电池模组和电池管理系统BMS)、储能逆变器(PCS)、能量管理系统(EMS)和其他硬件系统组成。电池模组则是由电芯组装而成,其上游是锂电材料,PCS和BMS上游主要包括半导体和各类芯片。储能系统价值构成中:

储能电池系统价值量约为65%:其中电池模组为60%,其电芯的质量直接影响整个储能系统的运行与效率;BMS约为5%。

储能逆变器价值量约为20%:储能逆变器在光伏逆变器的基础上,可以实现系统充放电、能量管理、离网运行、调频等多项功能,是储能系统中具备智能化控制能力的环节。


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总之,逆变器在储能产业链中具有重要价值,相信大家已经知道了三者之间的关系,再来看看逆变器市场的未来广大的前景:

储能未来星辰大海,进一步打开逆变器市场空间

再生能源(风电、光伏)成为未来主要能源已经是大:所趋,但是在全球能源供应由传统化石能源向清洁能源转型的过程中,光伏、风电等新能源电力间歇性、随机性特点较为明显。随着再生能源占比的持续提升,未来能源系统中如何保障电力系统的稳定可靠是当前研究的一个重点方向。我们认为储能系统是其中一个不可避免的方向,储能系统在未来能源系统中应用场景广泛:

1.发电侧:可以平滑发电输出,减少弃风弃电并提升消纳水平,且目前国内多个省份已经出台相关政策,比如山东、海南、江西等提出新增光伏、风电等项目按照10%及以上的比例配置储能。

2.用电侧:对于用户本身可以实现电力自发自用,在自然灾害的情况下仍然能够实现供电持续性,同时由于峰谷价差,配置光储系统的经济性更高;对于电网来说,可以帮助降低电网高峰负荷,提升整体效率。

3.电网侧:辅助电力市场,调峰调频,能够提升新能源接入比例,提升电网运行安全性。


Energy storage industry chain (see figure below) : Batteries and energy storage inverters (PCS) have high investment value: Energy storage system consists of energy storage battery system (battery module and battery management system BMS), energy storage inverters (PCS), energy management system (EMS) and other hardware systems.   Battery modules are assembled from electric cells, and their upstream is lithium materials. PCS and BMS upstream mainly include semiconductors and various chips.  Value composition of energy storage system:  

 

The value of energy storage battery system is about 65%, of which the battery module is 60%. The quality of the battery cell directly affects the operation and efficiency of the whole energy storage system.   BMS is about 5%.  

 

Energy storage inverter value is about 20% : Based on photovoltaic inverter, energy storage inverter can realize system charging and discharging, energy management, off-grid operation, frequency modulation and other functions, which is the link with intelligent control ability in energy storage system.  

 

 

 

The picture  

 

In short, inverters are of great value in the energy storage industry chain. I believe you have already known the relationship between the three. Now let's look at the broad prospects of the inverter market in the future:  

 

Energy storage in the future star sea, further open the inverter market space  

 

It is inevitable for renewable energy (wind power and photovoltaic) to become the main energy in the future. However, in the process of global energy supply transition from traditional fossil energy to clean energy, the intermittent and random characteristics of photovoltaic, wind power and other new energy power are obvious.   As the proportion of renewable energy continues to increase, how to ensure the stability and reliability of the power system in the future energy system is a key direction of current research.   We believe that energy storage system is one of the inevitable direction, and energy storage system is widely applied in the future energy system:  

 

1. Power generation side: power generation output can be smoothed, wind and power abandonment can be reduced and consumption level can be improved. At present, many provinces in China have issued relevant policies.  

 

2. Power consumption side: users can achieve spontaneous self-use of electricity and sustainable power supply even in the case of natural disasters. Meanwhile, due to the peak-valley price difference, it is more economical to configure optical storage system;   For power grid, it can help reduce peak load of power grid and improve overall efficiency.  

 

3. Power grid: assist the power market with peak and frequency modulation, which can improve the proportion of new energy access and the safety of power grid operation.  


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