Microgrid (Micro Grid): refers to small power system connected with the intelligent distributed power sources, generally includes a micro part of the power, the load, storage, power distribution and control system, with a large power grid or off-grid run.
The microgrids are divided into two types of grid-connected and independent types. The independent microgrids do not depend on the external power grid and can themselves realize the balance of internal electric power and electric power. The grid-connected microgrids are usually connected to the upper-level grids in parallel and can be operated under special circumstances Off-grid operation, independent operation of the network can maintain all or part of the important electricity load power supply.
Micro-grid can be divided into AC micro-grid, DC micro-grid, AC-DC hybrid micro-grid.
Micro-grid and power grid, backup power, UPS, distributed generation, energy storage comparison:
Different systems The contrast | Microgrid | ||
Same point | the difference | ||
1 | Large power grid | 1 ) are all power transmission channels; 2) have power distribution, relay protection, monitoring, metering and communication systems; 3) adjust the energy balance, reliable power supply to meet the load requirements. | 1 ) Different scales, microgrid <20MW; 2) Different voltage levels, microgrid <= 35kV; 3) Different power supply targets, microgrids are mainly distributed micro-power access; 4) For different targets, microgrid faces the islands, Remote areas, urban areas; |
2 | backup power | Independent power supply from the grid | The backup power supply uses a single diesel generator, while the microgrid supports multiple power supplies to coordinate operation, especially for distributed renewable energy. |
3 | ups | Independent power supply from the grid | UPS off-grid through the battery to provide energy for the load power supply, but also access the diesel engine, but the power side, the load side there is a strict distinction, the load side of the UPS can not and power supply; micro-grid can support a variety of power access operation, power Load, energy storage equipment can be connected to the same bus |
4 | Distributed generation | Use of new energy sources, especially renewable energy | Distributed generation is grid-connected, or a single power supply; microgrid can be grid, can be isolated, support a variety of power at the same time access. |
5 | Energy storage | Independent power supply from the grid | Ordinary energy storage systems are grid-connected; microgrids can be both isolated and unobstructed. |
Intelligent belt conveyor system could improve the efficiency of machine producing in safe, to save energy, reduce worker, and also could realize the unattended operation to the belt conveyor or intelligent system running. it is suitable for intelligent control to the belt conveyor under or on the surface and its relative system. it is customized scheme to meet the high-en customer who has the requirement of unattendend operation and mine intelligent.
Conveyor Control,Belt Conveyor Control,Intelligent Belt Control,Belt Conveyor Energy Control
Jiaozuo Huafei Electronic & Electric Co., Ltd. , https://www.intelligentmine.com