Distribution automation is the technological foundation of smart distribution networks. my country's distribution automation began in the 1990s, experiencing initial, reflective, and developmental stages. With the rapid development of my country's social economy, electricity, as one of the main energy sources driving national economic development, plays an increasingly important role in people's production and lives, and people's requirements for power supply quality are also increasing. In the power system, the distribution network is the main channel for ultimately transmitting electrical energy to various production enterprises and households. Therefore, distribution technology in the application of distribution networks needs continuous improvement in response to people's demands. Enhancing the load tolerance of distribution and reducing energy losses during grid transmission are all requirements for improving distribution technology.
Due to insufficient investment and attention to the power industry in my country, as well as a lack of management and research, certain problems have arisen in the development of power distribution technology. Therefore, strengthening the innovation and development of power distribution technology is crucial. Consequently, the power distribution network is currently the most concentrated area for innovative development in the power system. Most of the innovative development in the power distribution network focuses on the technological advancement of power distribution equipment and systems, with various new materials, components, and systems constantly being tested and piloted.
The release of the 13th Five-Year Plan for electricity has brought the technological development of the power distribution sector into the spotlight. Supported by national policies, the power distribution network has ushered in new development opportunities. However, the increasing sophistication of construction and renovation, along with the rising proportion of distributed energy resources, is constantly raising the technological requirements for future power distribution networks. So, what are the existing technologies in power distribution networks, and what new technologies will emerge in the future?
Distribution automation utilizes modern electronic, communication, computer, and network technologies, along with power equipment and system application technologies, to achieve monitoring, protection, control, and metering functions in both normal and fault conditions of the distribution network. It is organically integrated with distribution management, closely interacts with users, improves power supply quality, enhances power supply reliability and economy, and makes enterprise management more efficient. Distribution automation is a crucial means to improve power supply reliability and quality, expand power supply capacity, and achieve efficient and economical operation of the distribution network; it is also one of the important foundations for realizing a smart grid. Distribution automation has a development history of nearly forty years in industrialized countries. Especially in the last decade or so, distribution automation has become a major component for major power companies to further improve customer service quality and increase corporate economic benefits, and it has become an indispensable part of modern power grid management.
With the continuous improvement of power distribution technology, Polaris Power Transmission and Distribution Network has compiled a list of the current hot power distribution technologies to share with everyone.
1. Active distribution network planning technology
A distribution network technology architecture and its planning, operation and control technology are adapted to the access of multiple types of distributed power sources and demand response, utilizing controllable resources to achieve proactive planning, sensing, management, control and service.
(1) GIS-based spatial load forecasting technology considering multi-energy complementarity and demand response
(2) Optimization of self-healing power supply mode and evaluation method of electrical appliance reliability in smart distribution network
(3) Substation optimization planning and grid optimization planning methods based on asset management and reliability requirements
(4) Intelligent distribution network planning platform based on GIS and multi-objective model
2. Smart Distribution Network Self-Healing Control Technology
(1) Self-healing control
(2) Situational awareness
(3) Distributed power generation/microgrid/flexible load cluster control
(4) Voltage reactive power optimization technology
3. Distribution network situational awareness
Distribution network situation awareness: At a certain spatiotemporal scale, it provides an intuitive and comprehensive perception of the current state of the power grid, and acquires, integrates, predicts, and visualizes future development trends of various factors that may cause changes in the power grid situation.
Driving force: Distribution network operation and control requires a comprehensive understanding of the system's current state, necessitating timely and coordinated efforts from dispatching and control personnel to effectively identify and resolve problems, ensuring the system's economical and reliable operation.
4. Intelligent and flexible power distribution technology for power distribution equipment
Intelligent power distribution equipment:
(1) Digital processing + self-detection and diagnosis + adaptive control + information interaction and communication
(2) Electrical quantity information + noise information + temperature information + meteorological information...
Flexible power distribution technology:
(1) Power quality related technologies for power distribution systems, such as: net reactive power compensators, static synchronous compensators, active filters, dynamic voltage restorers, etc.
(2) Solid-state power electronic equipment, such as: power electronic switches, power electronic current limiters, power electronic transformers, etc.
(3) Flexible power flow control technologies, such as: unified power flow controller, power flow path switch, distributed power source controller, dispatchable load controller, microgrid controller, etc.
For more information, please visit the Power Equipment channel.
