TBEA's new battlefield

China Energy Storage Network News : "The ubiquitous power Internet of Things (hereinafter referred to as "ubiquitous") has created new market opportunities. In the future, TBEA will carry out reforms and innovations around the entire power grid company." Zhang Jianxin, chairman of Xinte Energy Co., Ltd. and general manager of TBEA Xinjiang New Energy Co., Ltd., told the "Energy" reporter when talking about the company's future development.

Ubiquitous energy was first proposed by the State Grid in March 2019, and it shook the entire energy industry as soon as it came out. TBEA's core business is closely related to the power grid. Faced with this huge change in the power grid, Zhang Jianxin has already locked on this battlefield.

The official definition of ubiquitous is: focusing on all aspects of the power system, making full use of modern information technologies such as mobile Internet, artificial intelligence, and advanced communication technologies to achieve interconnection of all things and human-computer interaction in all aspects of the power system, and establishing an intelligent service system with comprehensive state perception, efficient information processing, and convenient and flexible application. It includes a four-layer structure: perception layer, network layer, platform layer, and application layer.

TBEA is a service provider that provides system solutions to the global energy industry. Therefore, it does not limit its target to the equipment perception level of inverters, transformers, wires and cables, but also expands to the network, platform and application levels for layout and penetration, especially in the three major links of new energy power stations, flexible DC transmission and smart microgrids.

A microcosm of TBEA in the ubiquitous network

According to the official explanation of the State Grid, the ubiquitous power Internet of Things will connect power users and their equipment, power grid companies and their equipment, power generation companies and their equipment, suppliers and their equipment, as well as people and objects, to generate shared data and serve users, power grids, power generation, suppliers and the government. Its ultimate goal is to build a strong smart grid and a ubiquitous power Internet of Things, which complement each other and develop in an integrated manner to form a powerful value creation platform and jointly constitute an energy Internet that integrates energy flow, business flow and data flow.

Corresponding to TBEA, it can be said to be a microcosm of ubiquity, and the two have many similarities. TBEA's strategy is to build an energy interconnection platform from the three major sections of smart new energy power stations, flexible DC transmission, and microgrid comprehensive solutions, thus covering many business links such as power generation, transmission, distribution, and use.

On the power production side, TBEA focuses on the photovoltaic and wind power fields. Taking photovoltaic as an example, TBEA's smart photovoltaic power station adopts a high-voltage direct grid-connected solution based on power routers, with two solutions: centralized and DC converging string, covering a variety of photovoltaic power station application scenarios such as large ground power stations, water power stations, mountain power stations, industrial and commercial rooftop power stations, etc.

In terms of power transmission, TBEA's flexible DC transmission is mainly used for long-distance power transmission in the main power grid and interconnection of asynchronous power grids. It has huge advantages over traditional AC transmission in terms of transmission capacity, transmission distance, power quality, and grid security.

In terms of terminal applications, TBEA has formed a customized "one core, two drives, X scenarios" smart microgrid solution for microgrids such as industrial and commercial parks, data centers, islands, and areas without electricity, with power routers as the high-end technology leader and key products such as energy management systems and energy storage systems as the core support.

The power router is the core equipment of AC/DC hybrid microgrid. The world's first 10kV/1MVA power router independently developed by TBEA has been successfully applied to the world's first high-voltage direct grid-connected photovoltaic power station. At the beginning of 2019, the first batch of "Internet +" smart energy demonstration projects of the National Energy Administration were completed, including the Guangzhou Zhuhai DC network project, the world's largest multi-terminal AC/DC hybrid flexible distribution network interconnection project, and the National "863" Plan-TBEA Xi'an Industrial Park 2MW source-grid-load-storage coordinated microgrid demonstration project.

The energy management system (TEMS) predicts source-load power and adopts intelligent optimization algorithms to perform multi-time scale source-load energy storage management and coordinated control protection, thereby achieving economic optimization, stable and reliable operation, and improving the economic benefits of the microgrid.

Zhang Jianxin told reporters: "More than 90% of the energy of foreign microgrids is self-balanced within the grid. Domestic microgrids currently form an internal smart microgrid consisting of distributed photovoltaics, decentralized wind power, energy storage, EMS and other contents. At the same time, the smart microgrid will also achieve energy efficiency management with the outside. With the increase of DC power sources such as photovoltaics and wind power, power routers can directly connect DC and AC power grids to realize DC or AC/DC hybrid networking of microgrids."

In addition, based on the maturity of wind power, photovoltaics, DC transmission and distribution, cloud computing and power electronics technology, multi-energy complementary smart microgrids have become possible. However, due to the volatility of renewable energy such as wind and solar, energy storage equipment will also play an important role in smart microgrid technology, but large-scale energy storage currently awaits technological breakthroughs and industrial practice.

A smart power plant VS a smart park

Ubiquitous is a smart service system, and intelligence runs through the entire process of electricity. TBEA has also made early arrangements for the production and use of clean electricity, such as the smart operation and maintenance of photovoltaic power stations and industrial park projects.

In May 2018, at the world-renowned Shanghai SNEC Solar Energy Exhibition, TBEA launched the TB-eCloud smart energy management platform, which, unlike the industry's intelligent operation and maintenance voices, proposed "lean operation and maintenance."

TB-eCloud can collect, transmit efficiently, calculate accurately, process intelligently, and display the massive amounts of data generated by photovoltaic power stations in real time in an all-round manner, and provide asset management, production management, fault prediction, physical examination scoring, knowledge base, remote expert diagnosis and other functions, thereby steadily increasing power station revenue, ensuring asset safety, standardizing power station management, and assisting group decision-making, and realizing the group, full ecological chain, and full life cycle operation and maintenance management of photovoltaic power stations in an efficient, intelligent, and convenient manner.

A year later, also at the Shanghai SNEC Solar Energy Exhibition, TBEA released the Solar.Partner data photovoltaic integrated solution. Through the data analysis, mobile operation and maintenance and other technical means of the photovoltaic power station intelligent monitoring and analysis system TB-eCloud, the TB-eCloud photovoltaic power station intelligent monitoring and analysis system realizes the visual management of power station equipment. According to the field measurement of the power station operation and maintenance team, this function can improve the efficiency of the operation and maintenance team by 5%-10% and reduce power generation losses by 3%.

In April 2019, TBEA's first industrial park photovoltaic storage and charging microgrid demonstration project based on two-part electricity price demand response successfully completed a three-month trial operation in TBEA's Xi'an Industrial Park. The project reduced the park's electricity costs by more than 30%, and the proportion of photovoltaic self-use reached 100%.

The TBEA Industrial Park Photovoltaic Storage and Charging Microgrid Demonstration Project includes a 2MW photovoltaic power generation system, a 1MW/1MWh energy storage system and a 960kW electric vehicle charging pile, realizing the demonstration operation of the energy management system, energy storage system and virtual synchronous machine independently developed by TBEA. This project is the first to introduce demand response technology and economic optimization algorithms based on two-part electricity prices in industrial park microgrids, which can achieve double reductions in "basic electricity charges + electricity charges".

"At present, the power distribution situation in my country's industrial and commercial parks is complicated, with problems such as low power supply reliability, extensive energy use, and high energy costs. Microgrids are an effective means to solve these problems," said Dr. Huang Lang, head of TBEA Microgrid. "Microgrids are a service that aims to achieve multi-objective optimization in four dimensions: economy, energy, environment, and technology. It solves the energy optimization and power coordination of sources, networks, loads, and storage, handles conflicts between different stakeholders, and enables all participants to share benefits."

The TBEA Industrial Park microgrid system adopts a "source-grid-load-storage" microgrid system. In terms of intelligent management, it uses the modular and customized energy management system TEMS independently developed by TBEA, which integrates two intelligent software: power prediction and optimized scheduling. Through artificial intelligence and big data analysis technology, it realizes multi-dimensional and multi-time scale source-load-storage energy management and optimized scheduling.