储能


● 超导储能

由超导线圈、冷却系统、失超保护与系统保护、变流器和控制系统等部分组成;
核心是超导线圈,通过超导线圈将电能以电磁能的形式储存下来;
运行时无直流电能焦耳热损耗,超导线圈可产生很强的磁场;
能达到很高的储能密度约108J/m³,且能长时间无损耗的储能;
可用于一次调频、不间断电源系统、灵活交流输电系统等。

● 超级电容器

循环寿命和充放速度远高于常规电化学储能;
具有功率密度大、工作温度范围广和环境友好等优点;
已广泛应用于电子通信系统、交通工具、航空航天等领域。

● 熔盐储热

通过高温高压蒸汽加热熔盐储能系统,将高品位蒸汽热量储存起来;
或利用谷电加热熔盐储能系统,放热时产生高参数蒸汽;
既可用于发电,也可用于工业供汽或民用采暖;
应用场景包括火电机组深度调峰改造、火电机组延寿改造、谷电加热熔盐供汽等。

● 全钒液流电池

安全可靠的大容量长时储能方案;
液流电池通过电解液循环流动为电池供给活性物质;
具有容量大、寿命长、自放电率低、安全性好等优势,适用于大容量长时储能;
是液流电池中相对成型、可产业化的技术,配置灵活性高、技术逐渐成熟。

● 压缩空气储能

一种基于燃气轮机发展而产生的储能技术,以压缩空气的方式储存能量;
储能时段,压缩空气储能系统利用风/光电或低谷电能带动压缩机,将电能转化为空气压力能,随后高压空气被密封存储于报废的矿井、岩洞、废弃的油井或者人造的储气罐中;
释能时段,通过放出高压空气推动膨胀机,将存储的空气压力能再次转化为机械能或者电能。

● 飞轮储能

通过高速旋转的飞轮储存动能,功率密度高、响应快,主要用于电力调频;
目前飞轮储能技术路线基本成型,全球市场处于小规模验证与应用阶段。

● 抽水蓄能

协鑫建德抽水蓄能电站总装机容量 2400MW,设计年发电量预计24亿千瓦时,年抽水电量32亿千瓦时;
目前华东地区最大的抽水蓄能电站,同时是建德市历史上投资最大的项目;
电站主要承担华东电网调峰、填谷、储能、调频、调相和紧急事故备用等任务;
提高电力系统调峰能力,促进电网风电光伏等新能源消纳;
占地面积约161.44公顷,总投资达140亿元,由协鑫能科(002015.SZ)全资投建;
已被列入国家能源局发布的《抽水蓄能中长期发展规划(2021-2035年)》;
“十四五”重点实施项目,计划2029年投产发电;
电站上水库位于富春江上游左岸、乌龙山最高峰北坡的山顶谷地;下水库则利用已建的富春江水库,输水发电系统位于上、下库之间的山体内。

Multiple forms of energy storage


● Superconducting energy storage

It consists of superconducting coils, cooling system, loss of super protection and system protection, converter and control system.

The core is superconducting coil, through the superconducting coil will be stored in the form of electromagnetic energy

No DC energy Joule heat loss during operation, superconducting coils can generate a strong magnetic field

The superconducting coils can generate a strong magnetic field, achieve a high energy storage density of about 108J/m³, and can store energy for a long time without loss.

Can be used for primary frequency regulation, uninterruptible power supply systems, flexible AC transmission systems, etc.

● Supercapacitors

Cycle life and charging and discharging speed is much higher than conventional electrochemical energy storage

Has the advantages of high power density, wide operating temperature range and environmental friendliness, etc.

Has been widely used in electronic communication systems, transport, aerospace and other fields.

● Molten salt heat storage

Molten salt energy storage system heated by high-temperature and high-pressure steam, high-grade steam heat storage

Or use valley electricity to heat the molten salt energy storage system to produce high parameter steam when exothermic.

It can be used for power generation, industrial steam supply or civil heating.

Application scenarios include thermal power unit deep peaking modification, thermal power unit life extension modification, and valley power heating molten salt steam supply.

● All-vanadium liquid current battery

Safe and reliable large-capacity long-time energy storage solution

Fluid flow batteries supply active substances to the battery through the circulating flow of electrolyte.

It has the advantages of large capacity, long life, low self-discharge rate and good safety, and is suitable for large-capacity and long-time energy storage.

It is a relatively well-established and industrialised technology among liquid flow batteries, with high flexibility in configuration and gradually mature technology.

● Compressed air energy storage

Compressed air energy storage is a kind of energy storage technology based on the development of gas turbine, storing energy by means of compressed air.

During the energy storage period, the compressed air energy storage system uses wind/photovoltaic or low-valley electricity to drive a compressor to convert electrical energy into air pressure energy.

The high pressure air is then sealed and stored in decommissioned mines, caverns, abandoned oil wells or man-made storage tanks.

During the release period, the stored air pressure energy is converted into mechanical or electrical energy again by releasing the high pressure air and driving an expander.

● Flywheel energy storage

Storing kinetic energy through high-speed rotating flywheel, high power density, fast response, mainly used for power frequency regulation.

At present, the flywheel energy storage technology route is basically formed, and the global market is in the stage of small-scale verification and application.

● Pumped Storage

GCL Jiande Pumped Storage Power Station has a total installed capacity of 2400MW, with an estimated design annual power generation of 2.4 billion kWh and an annual pumping capacity of 3.2 billion kWh.

At present, it is the largest pumped storage power station in East China and the largest investment project in the history of Jiande City.

The power station mainly undertakes the tasks of peak shifting, valley filling, energy storage, frequency regulation, phase adjustment and emergency backup, etc. of the East China Power Grid.

It improves the peak-regulating capacity of the power system and promotes the consumption of new energy sources such as wind power and photovoltaic power in the power grid.

It covers an area of about 161.44 hectares, with a total investment of 14 billion yuan, and is wholly invested by GCL Energy (002015.SZ).

It has been included in the ‘Medium- and Long-term Development Plan for Pumped Storage (2021-2035)’ issued by the National Energy Board

It is a key project in the ‘14th Five-Year Plan’ and is scheduled to be commissioned in 2029.

The upper reservoir of the power station is located on the left bank of the upper reaches of the Fuchun River, in the valley on the top of the mountain on the northern slope of the highest peak of the Wulong Mountain; the lower reservoir utilises the already built Fuchun River Reservoir, with the water transmission and power generation system located in the mountain body between the upper and lower reservoirs.



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