ResearchResearch CenterNew Power System Key Equipment Research Center

Research Center

Affiliated Institutes

01

Institute of Power Electronics and Motor Systems

The institute focuses on advanced power electronic technology for large-capacity power converter, electrical energy routing devices and other flexible power conversion equipment for new-type distribution grids, and wireless electrical energy transmission. It has made significant breakthroughs in the field of accelerating simulation technology on power electronics and development technology on electric energy router, has sucessfully developed the first domestic power electronics simulation software‘DSIM’and a series of electrical energy routing devices and flexible power conversion equipment ranging from 50kW to MW.

02

Comprehensive Simulation and Intelligent Operation & Maintenance Institute for Power Transmission & Distribution Equipment

The Institute is committed to the scientific research and industrial development for the innovative technologies enabling the smart transformation of transmission & distribution systems. The main research areas include: comprehensive simulation of all equipment scenarios of power transmission & distribution lines, advanced power transmission & distribution equipment and supporting technology, intelligent operation & maintenance, and protection of power transmission & distribution lines.

03

Energy Consumption Intelligentization Institute

The Institute focuses on the trend of intelligent transformation on energy consumption side under carbon peaking & carbon neutrality goals, studies the key technologies of highly efficient, low-carbon and flexible energy consumption transformation, carries out research on the characteristic modeling & simulation of key energy equipment such as heat pump and charging pile, the analysis of energy consumption behavior and the optimization operation strategy of key energy equipment, develops the management control terminal and regulation system of key energy equipment, plans the energy consumption structure transformation and development demonstration of carbon peaking & carbon neutrality for cities/parks, and promotes the green and high-quality economic & social development with the green energy transformation.

04

DC Research Institute

Relying on the superior scientific research strength of the Department of Electrical Engineering of Tsinghua University, the Institute forms a research team with high-level academic research ability, prospective technology innovation ability and practical industry development ability. It carries out theoretical research, technical tacking and engineering construction at the three levels of devices, equipment and systems, be committed to becoming the core concept disseminator, theory & technology leader, standard & application practitioner for DC power grid, solves the difficulty of new power system with new energy as the majority, and contributes to achieving the goal of carbon peaking & carbon neutrality goals.

05

Energy Sensing and Communication Institute

The Institute focuses on the R&D of micro sensors and devices for energy Internet, be committed to providing reliable data resources for energy equipment manufacturers and network operators, provides overall solutions for system ubiquitous perception & breakdown positioning, equipment digital diagnosis and intelligent operation & maintenance, and gives comprehensive, effective, real-time and innovative information support for energy Internet, and realizes the deep integration, perception and regulation of energy flow, information flow and business flow of the energy Internet.

06

Photovoltaic Storage DC & Flexible Application Technology Institute

The Institute gathers innovative talents in system application, focuses on the two research fields of diversified & highly efficient utilization of new energy in industrial microgrids, and interaction between electric transportation and large-scale vehicle networks, be committed to realizing energy conservation & carbon reduction and high-quality industrial development in the two major scenarios of industry and transportation, provides planning consulting services, engineering technical services and system innovation solutions from strategic research to innovation demonstration, and contributes to the expansion of new businesses and the fostering of new industries for partners.

Core technology/products

Large-capacity power semiconductor devices and key equipment technology of DC grid

• Having developed a series of new generation of large-capacity power semiconductor device IGCT for DC grid, with large-capacity power level, lower loss, greater turn-off current and higher reliability. Its multiple performance indicators are internationally leading, and have greatly reduced costs and realize the localization development of core devices.

• Breakthrough in large-capacity power conversion technologies based on IGCT-Plus device such as flexible DC converter valve based on MMC, DC transformer, integrated energy storage STATCOM , DC energy dissipation device, large-capacity converter, LCC to resist commutation failure, and hydrogen generation power supply technology

• Having invented the coupling negative-voltage hybrid DC breaker and multi-terminal DC breaker, and developed the first series of high-medium-low voltage DC breaker products at home and abroad

R&D product: IGCT-Plus devices

With black-start function, characteristics of intrinsically safe anti-explosion & short-circuit failure mode, support of customization, and the advantages of large capacity, high reliability and low cost, which have realized the localization development of core devices

R&D product: MMC converter valve based on full IGCT

Having successfully developed the world's first full IGCT-MMC converter valve for flexible DC transmission, with advantages of low cost, low loss and intrinsically safe characteristics

R&D product: 535KV DC breaker

The HVDC breaker with the highest voltage & current level and the strongest breaking capacity in the world, which has been applied in Zhangjiakou-Beijing ultra-high voltage flexible DC power grid project

R&D product: Hybrid commutation converter HCC

The world's first hybrid commutation converter, which has tackled the key technologies of series voltage equalization and highly reliable control protection of hundred-level devices, and eliminated the risk of conventional DC transmission commutation failure

*R&D team: DC Research Institute

Digitalization technology for micro sensing chips, smart sensor devices and energy

• Having tackled key technical difficulties such as the continuous collection of environmental micro-energy, non-contact perception, edge intelligent recognition and equipment conformal integration

• Relevant achievements have been successfully applied to power grid monitoring and intelligent power equipment

R&D product: status perception platform for intelligent fitting micro sensing circuit

It integrates a variety of sensors and realizes real-time assessment, prediction, breakdown and risk warning of power transmission & distribution lines through multi-parameter monitoring & analysis on the line side and the channel side

R&D product: digital switchgear ubiquitous perception and management system

Based on new sensor technology, through the dynamic collection of multi-dimension information, it realizes switchgear's intelligent operation & maintenance management such as operation monitoring, breakdown warning & diagnosis, safe power supply and rapid breakdown recovery

R&D product: replaced digital operation & maintenance and energy trusting service

Through various types of micro sensors to complete power grid online measurement, which can be applied to key nodes such as power stations, lines, power distribution rooms and equipment to achieve the online monitoring of electric energy power quality, equipment status, and wire-cable breakdown

R&D product: refined intelligent load detection system

It comprehensively adopts relevant technologies such as information collection and IoT communication to provide simple, precise and reliable solutions for energy efficiency management, itemized metering, load identification, energy conservation management, etc

*R&D team: Energy Sensing and Communication Institute

Solutions for wind-solar-hydrogen- storage integrated planning & design and operation control

• The key technology of "source-load interaction" for locally highly-efficient utilization of renewable energy above 100,000 KW level

• Solutions for highly flexible power supply system's design and layered control for hydrogen generation from new energy sources

• New power electronics equipment with the coupling of new energy and hydrogen-related chemical industry parks

  
  

R&D product: simulation and optimization design tool for wind-solar-hydrogen-storage integrated operation

The tool integrates a large number of data sets applied for green hydrogen applications such as key equipment, wind & solar resources, and typical scenario application framework. It provides the optimally economical configuration scheme for wind-solar-hydrogen-storage integrated project combining equipment characteristics and operation control strategies through the boundary configuration of the wind-solar-hydrogenstorage integrated project. Realize the optimal design for project configuration scheme, and accurately assess and improve the economy of actual operation of the project.

R&D product: wind-solar-hydrogen-storage integrated energy management system (EMS)

Assess the dynamic response capability of flexible loads such as hydrogen generation system and hydrogen storage system, collect and analyze wind-solar prediction & real-time data, and realize energy real-time balance of wind-solar output, hydrogen generation plant load and power grid through real-time adjustment of wind-solar output and hydrogen generation load, meet the maximum wind-solar transmission-to-user or downstream production requirements, and improve the economy and reliability of project operation

*Photovoltaic Storage DC & Flexible Application Technology Institute

Low-carbon comprehensive energy planning and design technology of industrial parks

• Parametric Energy-Environment Planning System（PEEP）

• Equipment capacity configuration and optimization algorithm for hourly operation status with economy and carbon emission as the goals, with three-layer simulation framework, and support of devices dynamic expansion & multi-dimension sensitivity analysis

• Energy consumption structure estimation based on power big data and its application in electrification potential exploration and carbon emission metering

R&D product: carbon insight platform

Predict regional medium and long-term carbon emissions, plan & formulate targeted emission reduction goals, plan regional emission reduction paths by adjusting the timing & intensity of measures provided by the "emission reduction toolbox", and conduct technical and economic assessment

R&D product: Carbon Design Platform

Planning and investment decision assistance system, with the orientation of load & emission reduction needs, in-depth analysis of energy supply & demand, accurate planning of new energy project under carbon peaking & carbon neutrality It can load national-municipal level of wind-solar resources and energy price data, provide more than 20 types of devices to build a low-carbon comprehensive energy system model, and achieve 8760 hours of integrated energy system capacity optimization & operation optimization coupled with hot & cold electric hydrogen, which saves at least 30% time compared with the traditional EXCEL based method

R&D product: Carbon monitoring platform

The platform aims to achieve the integrated management of carbon emissions from source to terminal, including energy efficiency & carbon efficiency assessment of energy users or process links and the metering of electrical carbon coupling, which can be applied to various types of energy using institutions, including single buildings, comprehensive parks, industrial users, etc.

*R&D team: Energy Consumption Intelligentization Institute

Advanced power transmission & distribution equipment and technology

• Fully understand the shortcomings and deficiencies of the existing power transmission & distribution network equipment system, and accurately capture the new trends and new demands in the R&D field of power transmission & distribution equipment

• Relying on the research experience of the Institute in the fields such as high voltage external insulation, line monitoring and ferromagnetic equipment (such as iron-core transformers, and reactors), it focuses on advanced & intelligent ferromagnetic equipment, new line sensing & measurement and auxiliary systems, and new line external insulation equipment, etc.

R&D product: continuous on-load voltage regulator of distribution network

It achieves transformers' continuous on-load voltage regulation through the magnetic field control and can be used to replace traditional mechanical tapping regulators. The technology fullfills the needs of frequent voltage regulation action due to the integration of renewable energy to the grid, effectively improves the voltage regulation reliability when a large number of renewable energy needs to be accommodated in the distribution network, and thus improves the integration of those resources.

R&D product: hard composite insulator

The technology adopts weather-resistant epoxy resin as the sheathing material for umbrella skirt and mandrel, resulting in excellent characteristics such as anti-UV aging and resistance to complex climate environment.  Such characteristics effectively prevent the mandrel from brittle breakage and other aging processes. The product features light-weight, excellent thermal shock resistance, anti-pollution flashover performance. The special umbrella-shape design for extreme weather such as ice flashover and rain flashover. It can also effectively reduces the degradation from animal biting and & wind & sand wearing.

Rod suspension insulator

Disk-shaped suspension insulator

R&D product: multistage magnetic coupling wireless energy picking system

Provide reliable power supply for sensors, data collectors and cameras installed on the tower with highly efficient wireless magnetic resonance coupling transmission. The integrated insulation packaging of the coil system of the system ensures the wireless power transmission capability and meets the requirements of insulation performance and mechanical strength.

*R&D Team: Comprehensive Simulation and Intelligent Operation & Maintenance Institute for Power Transmission & Distribution Equipment

Key technology of large-capacity power electronics and new power transmission

• Propose the discrete state event-driven simulation technology, greatly reduce the computational redundancy, increase the simulation speed by two orders of magnitude on average under the same accuracy, solve the difficulty of nanosecond-level switching transient simulation divergence, and realize the localization of power electronics equipment simulation and development tools.

• Having developed a high-frequency, large-capacity and multi-terminal electric energy routing equipment, with modularity, low loss and high reliability, which adopts large-capacity wide bandgap devices and driven active control technology, reduces the switching loss of semiconductor switching devices and greatly improves the power density and operation efficiency of the device.

• Realize multi-terminal energy balance control and power routing technology to balance energy conflicts at different time scales, reduce energy fluctuations, decrease the volume and weight of energy storage devices, and improve the overall power density of the converter.

  
  

R&D product: megawatt-level medium voltage electric energy router

With characteristics such as multi-port, multi-cascading, multi-flow and multi-form, it functions as key supportive equipment for the wide access of distributed renewable energy, the flexible interconnection between the  substations/feeders in the distribution network, and the flexible conversion of various operation scenarios, and provides flexible solutions of electric energy management for diversified end-users with high efficiency performance.

R&D product: high-power and high-efficiency wireless electric energy transmission device

Upon the field of electric vehicles, having developed several 3.3 ~ 30kW wireless charging devices, with the system efficiency reaching above 95%; Upon the field of rail transit, having developed a 350kW non-contact power supply system for high-speed railway transit, with the efficiency above 94% over a wide power range

*R&D Team: Institute of Power Electronics and Motor Systems

Application Cases

• The research achievements of DC technology have been applied in major projects such as Zhangjiakou-Beijing DC power grid, Zhuhai three-terminal DC dis

  
  

  Figure: Zhangjiakou-Beijing ±500KV flexible DC power transmission demonstration project

  
  

  Figure: Zhuhai "Internet +" smart energy demonstration project

  
  

  Figure: Dongguan AC-DC hybrid distribution network project

• The world''s first panoramic intelligent monitoring system for power transmission lines has been successfully put into operation in Shangri-La, Yunnan

  ·Adopt integrated, intelligent and self-powered technical scheme

  ·Successfully realize the real-time assessment of power transmission line operating status, insulation characteristics and external disaster climate

  ·Achieve timely warning and accurate positioning of defects and breakdown risks

  
  

  
  

  Figure: live broadcast of the system put-into-operation process by CCTV

• Demonstration project of AC-DC hybrid multi-terminal 10kV/2MW electric router for renewable energy systems

  • Rely on the project of "Intelligent Power Grid Technology and Devices" under National Key Research and Development Program

  • The developed MW-level electric energy router has been applied to the demonstration project in Dongguan of Guangdong Province featuring "high proportion of renewable energy and high proportion of DC load"

  • Having passed the sci-tech achievements appraisal of Chinese Society for Electrical Engineering and the new products technical appraisal of China Machinery Industry Federation

  • Relevant achievements have won the first prize of the "Machinery Industry Science and Technology Award" of the Chinese Mechanical Engineering Society