Smart Grid is a new type of power grid based on the physical grid, which integrates advanced sensor measurement technology, communication technology, information technology, computer technology and control technology with the physical grid. It aims to adapt to the development of the power market, ensure the safety, reliability and economy of power supply, and provide clean, interactive power supply and value-added services. Reallin contributes to the sustainable development of the world through its own technology
Content
1. Developments of the World Smart Grid Technology Experimental Demonstration Project Construction
1.1 Energy Storage Technology Demonstration Project
1.2 Power Transmission Automation Technology Demonstration Project
1.3 Distribution Automation Technology Demonstration Project
1.4 Smart meter technology demonstration projects
1.5 Demonstration Project of Electric Vehicle Charging and Discharging Technology
2. Reallin's contribution to global sustainable development
2.1 Company Overview
2.2 Promoting Energy Efficiency through Metering Technology
2.2.1 Accurate Energy Measurement
2.2.2 Encouraging Energy - Saving Behavior
2.3 Supporting the Development of Renewable Energy
2.3.1 Metering for Renewable Energy Systems
2.3.2 Enabling Grid - Scale Integration of Renewables
2.4 Environmental Sustainability in Production
2.4.1 Green Manufacturing Practices
2.4.2 Reducing Carbon Emissions
2.5. Contributing to Global Energy Access
2.5.1 Supplying Meters to Developing Regions
2.5.2 Participating in International Energy Projects
Developments of the World Smart Grid Technology Experimental Demonstration Project Construction
As a hot topic of the global power industry, smart grid technology is still being explored and studied, and is not yet fully mature, and has not yet been widely applied to life and work. However, the power industry has never stopped innovating in smart grid technology. In recent years, a number of demonstration projects have emerged in smart grid energy storage technology, transmission automation technology, distribution automation technology, smart meter technology, user-side power technology, and electric vehicle charging and discharging technology, forming a series of technical highlights.
1.1 Energy Storage Technology Demonstration Project
Smart grid energy storage technology is an effective way to solve the problem of intermittent power supply from renewable energy. Currently, the United States and Europe are at the forefront of this field, and related demonstration projects have achieved initial results. The U.S. Department of Energy has invested $120 million to build the "Battery and Energy Storage Energy Innovation Center" to focus on accelerating new materials, equipment, systems and methods for electrochemical energy storage for transportation and power grids; encourage new energy storage design and development work, expand prototype devices to verify new methods of electrochemical storage, overcome current manufacturing limitations, and reduce complexity and cost through innovation. Through the center's interdisciplinary research and development, cutting-edge energy storage and battery technologies will be promoted, the reliability and efficiency of the power grid will be improved, and clean renewable energy technologies will be better integrated. The EU's Strategic Energy Technology Action Plan (SETPlan) has increased its support for the scientific and technological research and development of energy storage technology. It relies on the mechanical, physical and electrochemical principles and characteristics of energy storage to simultaneously promote the development of energy storage technology. Research areas include hydropower station-head potential energy storage technology; compressed air-steam turbine energy storage technology; electrolytic cell-electrochemical energy storage technology; hydrogen-electrolysis-internal combustion engine energy storage technology; fuel cell-lithium ion, sodium sulfide, nickel cadmium, nickel metal hydride, lead-acid energy storage technology; flywheel storage system (Flywheel Storage Systems) energy storage technology; ultra-large capacitor energy storage technology and superconducting magnetic energy storage technology.
Companies in the United States and the United Kingdom have made breakthroughs in smart grid energy storage technology. With funding from the UK Department of Energy and Climate Change, Highview Energy Storage and the University of Leeds jointly established a liquid air energy storage plant outside London and jointly developed a system that uses liquid air energy storage for non-peak energy: on the one hand, the system can simultaneously store and process low-level waste heat in the distribution process, capturing waste heat, especially low-level waste heat; on the other hand, the system exhausts clean cold air, which can provide refrigeration applications for industrial or commercial places, and its cost will be significantly lower than battery energy storage technology. Although many companies including Air Products and Praxair are researching liquid air and liquid nitrogen energy storage technologies, Highview is the first company to commercially apply this technology. American Electric Power (AEP) has launched a "Community Energy Storage" demonstration project. A single community energy storage unit is a small distributed energy storage unit that can be used as a backup power source when the power supply is interrupted. It is connected to the user end and provides services to 2 to 5 households. In 2011, AEP built 80 community energy storage units on distribution lines and developed multiple dispatch control models for community energy storage groups, including basic and advanced models, such as testing predefined dispatch curve tracking modes. These 80 units constitute a community energy storage group with a total storage capacity of 2 megawatts. On this basis, the American Electric Power Research Institute added an energy storage module to cooperate with the simulation of community energy storage technical parameters, including performance, status and loss during simulated operation.
1.2 Power Transmission Automation Technology Demonstration Project
Detecting various states of the transmission network and effectively managing the transmission lines through remote monitoring are the key points of the development of transmission lines in the direction of intelligence.
The Automatic Regional Dynamic Network Management System (AuRA NMS) R&D project is sponsored and initiated by the UK Engineering and Natural Sciences Research Council to study new intelligent transmission networks. The research team includes ABB, transmission network operator Scottish Power, EDF Energy and 7 British universities including the Royal College of London. The power station automation series COM600 developed by ABB is the grid management system controller for the above project, and is also a supplementary system for the existing substation automation and network management system developed by Scottish Power and EDF Energy. By supporting the IEC61850 standard, the COM600 series enhances the interoperability and extension functions of the system, and provides certain support for the traditional protocols used by the existing feeder automation equipment of distribution network operators.
Swiss power and automation technology group ABB and TenneT, which operates the transmission line from the Netherlands to Germany, are jointly building a transmission line connecting an offshore wind farm to the German inland power grid. This is also the world's largest offshore high-voltage direct current (HVDC) transmission line, which is expected to be put into operation in 2015. ABB will use light high-voltage direct current (HVDCLight) transmission technology to transmit offshore wind power from the 400-megawatt Gode Wind II wind farm and several other wind farms to an offshore high-voltage direct current converter station, which will transmit the power through 135 kilometers of underwater and underground cables to the DÖrpen high-voltage direct current converter station on the German coast, and then connect it to the German onshore power grid. The entire transmission line has a power of more than 900 megawatts, and the power loss of each converter station has been reduced to less than 1%. Light high-voltage direct current overcomes the limitations of conventional transmission distances and power grids, while minimizing power losses and achieving efficient transmission. The cable load of the entire project reaches 320 kilovolts, which is the highest voltage level for extruded cables in HVDC lines.
1.3 Distribution Automation Technology Demonstration Project
Distribution network automation is an important means to improve power supply reliability and quality, expand power supply capacity, and achieve efficient and economical operation of distribution networks. It is also one of the important foundations for realizing smart grids. China has completed a large, complex, and highly comprehensive systematic project in this field, including all functional data flows and controls related to the distribution system in power companies, and has made breakthroughs in the evaluation and analysis of the benefits of distribution network automation.
China State Grid Corporation has listed Hangzhou as the first batch of distribution automation and "regulation-integration" pilot cities. The total investment of the Hangzhou distribution automation pilot project is 78.9 million yuan. The implementation scope is the core area within the ring road of Hangzhou City, involving 12 substations, 161 10 kV lines, and 380 switch stations. The pilot project mainly sorts out and optimizes the distribution network framework in the region, transforms the distribution equipment, and at the same time carries out distribution automation transformation, construction of distribution communication network, and improvement of the functions of substations and master stations. The construction content mainly includes the installation and access of public transformer and distribution monitoring terminals, access to power consumption information collection systems, access to electric vehicle charging station monitoring systems, access to distributed photovoltaic power sources, access to fault indicators, etc. The distribution automation functions include remote control, telemetry, and remote signal collection and operation monitoring, fault location, isolation, and power supply restoration. By the end of 2010, China State Grid Corporation had completed the transformation of 224 distribution network automation lines and 416 switch stations in Hangzhou, realizing "integrated control" management, and equipped with functions such as accident isolation and restoration, "remote signal, telemetry, and remote control".
1.4 Smart meter technology demonstration projects
Due to their advantages of energy saving and improving grid efficiency, smart meters are being rapidly adopted around the world. The Smart Meter Market Forecast report released by market research firm Pike Research shows that countries are making every effort to expand the deployment of smart meters. By the end of 2011, the number of smart meters installed worldwide had reached 251 million. It is expected that this number will double to 535 million in 2015 and may reach about 1 billion by 2020. Shows the smart meter deployment plans of various countries.
Smart meter deployment plans by country
United States: 15 million units were installed by mid-2010, and 52 million units are planned to be installed by 2013, which is equivalent to one-third of the number of electric meters in the United States. The penetration rate of smart meters will reach 50% in 2015.
Europe: The European Union requires member states to achieve 80% penetration of smart meters by 2020; in France, for example, the French government arranged for the French Electricity Company's subsidiary, the French Electricity Network Transmission Company, to be responsible for the deployment of smart meters. From 2013 to 2014, France will enter the stage of large-scale installation of smart meters, and it is estimated that by 2020, the number of smart meters installed in France will reach 35 million.
Japan: Power companies have begun to deploy smart meters. Currently, the Kansai region has the largest number of smart meters installed, with 610,000 households having installed smart meters by the end of November 2010. According to Japan's new energy basic plan, it is planned to install smart meters for all users who apply after 2020.
Digitalization, intelligence and multi-function have become important trends in the development of smart meter technology, and relevant technical demonstration results have emerged. NXP Semiconductors of the Netherlands has launched the LPC1700 series of microcontroller unit (MCU) solutions based on ARM Cortex. The application of LPC1700 in smart meter systems mainly includes three-phase (multi-function) meters, single-phase multi-rate/multi-function meters and multi-function terminals. NXP Semiconductors' smart meter periphery adopts an optimized design, with multiple functions such as anti-theft, and can use contactless card reading technology to complete prepayment. The Chinese research room has made a breakthrough in the research of multi-chip packaging of smart meters. Based on the multi-chip packaging form of organic substrate, multiple important bare chips such as metering sampling, single-chip microcomputer, LCD screen control interface, memory, etc. are packaged together to form a single chip. The chip packaging has good packaging system compatibility. The packaged chip fully maintains the original electrical performance, the software does not need to be replaced, the hardware does not need to be added, and the physical connection relationship does not need to be changed. Through packaging technology, the structure is optimized and integrated, and the integration is greatly improved. Analog Devices Inc. (ADI), an American analog device company, has launched four high-precision energy metering chips. In addition to being able to measure reactive and active power at the same time, they also have the function of measuring fundamental wave energy. They are used to improve the accuracy and performance of commercial, industrial and residential smart meters, which is crucial for power quality monitoring.
The project aims to explore the possibility of intelligent home appliances, promote the coordinated development between home appliance manufacturers, local energy system manufacturers and power systems, propose the development model and implementation strategy of smart home appliances, and determine the unified information exchange standards. After the implementation of the project, many achievements have been made.
1. The design requirements for the intelligent operation of home appliances in a larger-scale power grid system have been clarified.
2. Consumer preferences for smart home appliances have been evaluated, and suggestions have been put forward to promote consumer acceptance of such products;
3. The goal of achieving supply and demand balance in future power grids with a high proportion of wind power generation has been determined, and the economic benefits of adopting demand response technology for home appliances have been analyzed in detail;
4. The technical and economic feasibility of smart home appliances interacting with renewable energy generation and cogeneration generation in the region has been evaluated;
5. A comprehensive analysis of the technical and economic feasibility of using smart home appliances under different application conditions across Europe has been conducted;
6. The development model and roadmap of smart home appliances have been provided to relevant parties, including strategic recommendations for the introduction of smart appliances and recommendations for the implementation of corresponding incentive policies.
Electrolux of Sweden, ENEL, Indesit and Telecom Italia are jointly researching and developing the next generation of home appliance technology "Energy Home". They use the remote management network of Enel and the fixed and mobile broadband networks of Telecom Italia to achieve remote management and demand response of home appliances, and reduce the peak load of the power grid by adjusting the operating status of home appliances. The project uses two-way information exchange between the power grid and home appliances. Home appliances can adjust their operating mode according to the requirements issued by the power grid and price change information, thereby effectively avoiding power grid overload and imbalance of power supply and use. Users can use computers, mobile phones and display devices of home appliances to understand the power consumption status of the house and the operating status of the products, and use the Internet to adjust the demand response plan. ENEL is responsible for providing the remote meter reading management system and operation management, which can communicate with home appliances using the telecommunications network; Telecom Italia is responsible for providing fixed and mobile broadband networks, which will use Alice home gateways and ZigBee wireless technology to enable two-way information exchange between home appliances and the power grid's monitoring center; Electrolux and Indesit use smart home appliances and corresponding control programs to achieve information exchange between products and between products and the power grid, so as to implement optimized operation management of home appliances.
1.5 Demonstration Project of Electric Vehicle Charging and Discharging Technology
The construction of electric vehicle charging and discharging stations is one of the typical applications of smart grids. The reasonable charging and discharging of electric vehicles can effectively balance the volatility of renewable energy and help the power grid effectively accept renewable energy generation. At present, the main electric vehicle charging and discharging technologies include the unidirectional disordered VOG mode, the unidirectional ordered TC and V1G mode, and the bidirectional ordered V2G mode. China is the largest country in the world in the production and sales of new energy vehicles.
The U.S. Department of Energy believes that the application of wireless charging technology has the potential for significant growth. In the short term, static wireless charging technology is expected to be used for automatic parking charging. In the medium term, quasi-dynamic wireless charging technology is expected to provide power when the vehicle is parked, such as charging electric vehicles when they stop at red lights. In the long term, dynamic wireless charging can charge electric vehicles while driving. Germany is promoting low-cost charging pile demonstration sites to reduce the cost of using electric vehicles and infrastructure. At present, there are no display screens or any buttons on the charging piles of electric vehicles in Germany. The charging process relies on the station system to automatically carry out the charging process. The charging information is directly displayed on the user's smartphone or car display through the network, and can also be sent to the user by email. After the user downloads the relevant software on the mobile phone, he can understand the current power or other relevant information. The car display can also act as the charging pile display after the car is connected to the charging pile. In addition, there are no buttons on the charging pile, which to a certain extent improves the safety of charging and reduces the possibility of misoperation. Through the relevant system, the charging pile can be connected to charge, and the connection can be automatically disconnected after charging is completed. When the user needs to stop charging midway, he can use the mobile phone or the car display to complete the operation. At present, China's electric vehicles are equipped with corresponding hardware.
2. Reallin's contribution to global sustainable development
2.1 Company Overview
Zhejiang Reallin Electron Co.,Ltd, founded in 2005, is a specialized high - tech enterprise. We focus on the research and development, production, sales, and service of a wide range of products, including various Grid Electricity Meters, EV charging Meters, AMI Solutions, Smart Sensors, and IOT platforms. With multiple R&D and production bases in Europe and Asia, we export high - quality products to over 40 countries around the world, playing an active role in the global market.
2.2 Promoting Energy Efficiency through Metering Technology
2.2.1 Accurate Energy Measurement
Our advanced electricity meters are designed to provide highly accurate energy consumption data. For example, our Single - Phase Smart Electricity Meters (such as Type E1026) are compliant with IEC, MID, and EN standards. They can precisely measure active and reactive power, which is crucial for both consumers and power grid operators. By accurately measuring energy usage, end - users can better understand their consumption patterns and make more informed decisions to reduce waste. Power grid companies can also use this accurate data for more efficient grid planning and load management, optimizing the distribution of electricity resources and reducing overall energy losses in the grid.
2.2.2 Encouraging Energy - Saving Behavior
Our meters often come with features that promote energy - saving. For instance, some of our products can record and display historical energy data, allowing consumers to track their energy usage trends over time. With this information, users can identify periods of high consumption and take steps to adjust their behavior. Additionally, through our smart meters and associated AMI (Advanced Metering Infrastructure) solutions, real - time energy consumption information can be provided to consumers, either through in - home displays or mobile applications. This real - time feedback empowers consumers to make immediate changes to their energy - using habits, such as turning off unused appliances, resulting in overall energy savings at the household and community levels.
2.3 Supporting the Development of Renewable Energy
2.3.1 Metering for Renewable Energy Systems
As the world increasingly turns to renewable energy sources like solar and wind, our meters play a vital role. We have developed specific meters for renewable energy applications, such as those used in solar power generation systems. These meters can accurately measure the electricity generated by solar panels and the power fed back into the grid. For example, in a residential solar installation, our meters can precisely record the amount of self - consumed solar energy and the excess energy sold back to the grid. This data is not only important for homeowners to monitor the performance of their solar systems but also for power grid operators to manage the integration of distributed renewable energy sources into the grid, ensuring a stable and reliable power supply.
2.3.2 Enabling Grid - Scale Integration of Renewables
Our AMI and IOT platforms also contribute to the grid - scale integration of renewable energy. By providing real - time data on energy generation and consumption from various sources (including renewables), our systems help grid operators balance the supply and demand on the grid more effectively. When there is a sudden increase in solar or wind power generation, the grid can quickly adjust based on the data provided by our meters and IOT sensors, redirecting power to areas of high demand or storing excess energy in battery systems. This helps to maximize the utilization of renewable energy and reduce the curtailment of clean energy sources, thus promoting the large - scale adoption of renewable energy globally.
2.4 Environmental Sustainability in Production
2.4.1 Green Manufacturing Practices
At Zhejiang Reallin Electron Co.,Ltd, we are committed to green manufacturing. Our production facilities in Asia adhere to strict environmental standards. We use energy - efficient manufacturing equipment to reduce electricity consumption during the production process. For example, our automated assembly lines are designed to operate with minimal energy waste. Additionally, we have implemented waste reduction and recycling programs within our factories. We recycle materials such as metals, plastics, and electronic components from production waste, reducing the need for virgin materials extraction and minimizing our environmental footprint.
2.4.2 Reducing Carbon Emissions
Through continuous improvement in our manufacturing processes and the use of clean energy in our facilities (where possible), we strive to reduce our carbon emissions. We also optimize our supply chain to minimize transportation - related emissions. By sourcing raw materials from local suppliers whenever feasible and choosing more fuel - efficient transportation methods for our finished products, we are taking steps to lower our overall carbon footprint. This not only benefits the environment but also sets an example for other companies in the industry to follow sustainable production practices.
2.5. Contributing to Global Energy Access
2.5.1 Supplying Meters to Developing Regions
We recognize the importance of energy access for sustainable development, especially in developing regions. We have been actively supplying our high - quality electricity meters to over 40 countries, many of which are in the process of expanding their energy infrastructure. In these regions, our meters are used to measure and manage energy consumption in residential, commercial, and industrial sectors. By providing reliable metering solutions, we help local power companies improve their billing accuracy and efficiency, which in turn promotes the sustainable development of the local energy industry and enables more people to have access to affordable and reliable energy.
2.5.2 Participating in International Energy Projects
We also participate in international energy projects that aim to improve energy access and efficiency. For example, in some regions where there are initiatives to upgrade the power grid to a smart grid, we contribute our expertise and products. Our AMI solutions and smart meters are integrated into these projects, helping to modernize the energy infrastructure. This not only enhances the reliability of the power supply but also provides opportunities for local communities to better manage their energy usage, ultimately contributing to the global goal of ensuring universal energy access and sustainable development.