中文版
ENGLISH
| Application Case of Distributed Energy Storage -- Taking the Time Nebula as an E |
| Release time:2022-12-06 15:07:18| Viewed： |
Application Case of Distributed Energy Storage -- Taking the Time Nebula as an Example
（一） High proportion of distributed new energy grid connected regions Xiangyun Town is located in the west of Nan'an City, with abundant sunshine resources throughout the year，More than 2/3 of the 35kV Xiangyun substation has distributed photovoltaic access, and green energy power generation accounts for 92.59% of the annual electricity consumption in Xiangyun Town.
In order to solve the problems of voltage bidirectional out of limit, voltage fluctuation and flicker, harmonic exceeding standard, three-phase imbalance and other problems associated with high proportion of distributed photovoltaic users' grid connected power generation，Nan'an Power Supply Bureau has selected 4 stations and districts in Xiangyun Town as the pilot sites to respectively configure energy storage subsystems and build a demonstration project of new micro grid power system of station and district type. Four sets of 50KW/62.7KWh lithium iron phosphate energy storage systems provided by Time Nebula for the project,It helps to achieve 100% local consumption of distributed photovoltaic power in the substation area, 100% qualified voltage quality, 14.3% elastic capacity increase in the substation area, and 11.4% improvement in power supply reliability,And solve the problem of short-term power supply for important loads to improve the reliability of power supply. （二） Industrial Park 1. A large number of photovoltaic panels have been laid on the roof of a factory building in an industrial park in Shanghai. In addition to supplying the consumption of the park's load, there is still a large surplus that cannot be absorbed.And because of the instability and intermittency of photovoltaic power generation, it has adverse effects on power quality.
2. A factory of a science and technology enterprise in Zhejiang will generate a large amount of surplus electric energy in the offline testing stage of products,Because this part of electric energy is intermittent and random, it cannot be directly supplied to the plant load.
The 500KW/1MWh zero carbon plant energy storage solution provided by Time Nebula is based on the operation characteristics of the plant,Two operation modes, namely valley power and hydrogen power, are adopted to make full use of surplus electric energy, cut peak and fill valley, and save power cost in the park.
3. A science and technology factory in Guangdong produces nanoscale materials. If it encounters power limiting measures during the summer peak period, the factory will stop production and cause losses. The 2MW/5.4MWh industrial and commercial energy storage system provided by Time Nebula can be used as a backup power supply during power failure,Continuous power supply for important equipment and improvement of power quality in the plant area; It can also implement the strategy of "peak cutting and valley filling" according to the difference between local peak and valley electricity prices to reduce the electricity cost.
（三） Fast charging infrastructure The energy storage system, photovoltaic shed, fast charging and intelligent monitoring system form an integrated charging station of "optical storage, charging and inspection",It can store photovoltaic green power, realize local consumption, and also implement the strategy of "peak shaving and valley filling" to improve operating income. The power of energy storage system can effectively support the peak demand of electric vehicle charging power, smooth the peak power, and reduce the initial investment in capacity expansion and transformation of distribution facilities.
The integrated charging station solution of "optical storage, charging and inspection" can effectively support the construction of fast charging infrastructure, promote the development of electric vehicle industry, and help achieve the goal of "dual carbon",At present, it has been applied in Shanghai, Wuhan, Xining, Guiyang, Fuzhou, Ningde, Yibin, Shenzhen, Dongguan, Suzhou, Changzhou and other places.
（四） Offshore applications 1. Island Micronet An island in Fujian is more than 20 kilometers away from the nearest point on the mainland. It is only powered by a 10kV submarine cable. In typhoon season and during the maintenance of submarine cables, it is impossible to ensure the continuous and reliable power consumption of residents on the island. The use of conventional fuel units for power supply not only makes fuel transportation difficult, but also brings pollution to the island ecological environment.
The 2MWh liquid cooled container type energy storage system of the Time Nebula is designed with IP67 protection grade, and can operate stably in the island's "high temperature, high humidity and high salt" environment. Compared with the traditional air cooling solution, the liquid cooling system can reduce energy consumption by 20% and land occupation by 40%, which can effectively support the continuity of power supply and reduce the difficulty of site selection and construction of the energy storage system under the condition of rugged islands.
The liquid cooled energy storage system, combined with wind power generation and photovoltaic power generation, forms a "wind and solar storage" micro grid, which provides the island with a second power source, ensures the sustainable and reliable power consumption of the island residents, and lays a foundation for the transformation and upgrading of the island economy.
2. Marine fishing raft There are nearly 50000 farmers in Ningde City, Fujian Province, and about 1.2 million fishing cages. About 30% of the nearshore farmers supply power by pulling cables from the shore. There are problems such as high cable investment and maintenance costs, low reliability, illegal switching to power supply and price increases, and large potential safety hazards; About 50% of the farmers use the "photovoltaic+energy storage" method to use electricity. The lead-acid batteries used have problems such as short service life, large volume, small output power, large potential safety hazards, and environmental pollution; The remaining 20% of farmers are diesel powered or without power.
The Times Nebula 290KW/225.6KWh energy storage system, combined with photovoltaic power generation, wind power generation and digital energy management system, can realize uninterrupted power supply for offshore fishing rafts.
It is estimated that 280000 kilowatt hours of clean energy can be consumed every year, and about 243.6 tons of carbon emissions can be reduced through the replacement of electric energy. While effectively improving the power supply capacity of marine aquaculture projects, it has promoted the green and low- carbon upgrading of aquaculture industry.
（五） Remote area Sanba Naxi Nationality Township is a remote area supplied by high-altitude small hydropower. Restricted by Pudacuo National Park, Haba Snow Mountain Nature Reserve and ecological red line, it is difficult to construct the power grid. Previously, power was only supplied by 35kV single power long line near the power station. As the local power load is scattered and low density, the voltage problem is prominent and the power supply reliability is low.
The Times Xingyun 0.73MW/1.8MWh lithium iron phosphate energy storage system is integrated with hydropower units, photovoltaic power generation, power quality control devices, load detection and micro grid power flow management system to form a small power generation and distribution system, providing an important backup power supply for Sanba Township, ensuring that the micro grid can continue to supply power in the event of a single main power supply failure, improving the reliability of power supply, and supplying power to high-altitude small hydropower Environmentally restricted areas provide successful examples of energy solutions. |
