On July 31st, ABB, the world's leading power and automation technology group, provided high-voltage isolation circuit breakers (DCBs) and other power products for the 220 kV smart substation demonstration project under the State Grid Corporation of China. The demonstration project aims to improve the efficiency and reliability of power networks by deploying and integrating smart solutions. This is the first domestic application of ABB's innovative high-voltage isolated circuit breakers. In conventional open substations, circuit breakers and disconnectors are separate devices that require their own installation space. ABB isolated circuit breakers integrate isolation functions with circuit breakers, eliminating the need for separate installations of two devices. This can reduce a considerable amount of floor space, reduce power losses, improve grid safety, and improve system reliability. In addition, this new high-voltage isolated circuit breaker is conducive to optimizing the operation and maintenance of substations and reducing the impact on the environment.
Giandomenico Rivetti, head of the high-voltage business unit at ABB Group, said: "The demonstration project will help China achieve a stronger and more smart grid target, which will make the grid more efficient and reliable. Over the years, we have reached the national level. Power Grid Corporation has always maintained close cooperation in many global innovations and we are very happy to continue this tradition."
The isolated circuit breaker in the demonstration project integrates condition monitoring with other control functions, providing additional 'intelligence' for the secondary control layer, thereby perfecting the intelligence of the primary device layer.
State Grid Corporation of China is one of the leading power companies in China and one of the world's largest power companies. It focuses on the construction and operation of power grids. The business area covers 26 provinces, autonomous regions and municipalities directly under the Central Government, which is equivalent to 88% of the country's land area.
ABB is a leader in power and automation technology in the world's top 500 companies. ABB is committed to helping power, utilities and industrial customers improve their performance while reducing their impact on the environment. ABB Group operates in more than 100 countries and employs 145,000 people. ABB has a full range of business activities in China including R&D, manufacturing, sales, and engineering services. It has approximately 19,000 employees, 36 local companies, and sales and service networks in 90 cities across the country.
The RGB Color Controller is in a predetermined order to change the main circuit or control circuit wiring and circuit changes the resistance value to control the motor start, speed, braking and reverse master device to control RGB color.
Cumbersome, complex structure, once the design is complete, you can not modify or expand, but it's fast. Micro-controller design program easy, simple structure, convenient to modify or expand, modify a machine instruction function, simply restated the corresponding micro-program;
To add a machine instruction, just add some micro-control program in memory, however, RGB Color Controller is through the implementation of a micro program.
Specific comparison is as follows: a combination of hardwired logic controller, also known as the controller, by the logic circuit, relies entirely on hardware to achieve the function of the instruction.
Basic components to RGB Color Controller:
(1) the instruction register is used to store instruction being executed.
(2) Operation code decoder: instruction opcodes for decoding to produce the corresponding control level, to complete the analysis function of the instruction.
(3) Sequential Circuits: used to generate a time stamp signal.
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