In power engineering design, power design and power planning play a guiding role, Inner Mongolia Electric Power Design Company Generally, it includes medium-term and long-term development plans, which are mainly reflected in the following aspects: system professional funding is calculated through scientific methods, and on this basis, plans are compared, data are collated, analyzed and synthesized to determine the construction related content of the project, including construction steps, construction time, construction scale and production time, and the combination is integrated into the plan. In order to realize economy, safety, energy conservation and improve reliability of power projects, scheme comparison is essential, and it is also the basis for the smooth implementation of later work. The advantages and disadvantages of the scheme can be compared through various calculation results, and the economic aspects Inner Mongolia Electric Power Design The development, feasibility, safety and reliability are analyzed to help the selection of the scheme. 1. Power flow calculation. This is the basic calculation in power design, including line power calculation and equipment component calculation in the power grid. It is not only an important reference for the stability of the main system and relay protection, but also an important basis for the range of components and equipment. 2. Power system stability evaluation. Stability calculation is the main approach. In the power system, there are some common faults. The power flow calculation can conduct fault simulation and impact assessment, which includes three aspects: frequency stability calculation, power system transient stability calculation, and voltage stability calculation. 3. Short circuit current calculation. This calculation method is mainly used to determine the grid structure. In the determined system and grid structure, many times the short circuit will occur in the circuit, resulting in abnormal current value. At this point, Inner Mongolia Electric Power Design The short circuit calculation can provide reference and basis for correct selection of electrical components, electrical equipment and relays. The rated current and relay protection setting of the melt can be realized, and the short circuit current can be quickly cut off, the duration of short circuit fault can be reduced, and the safe operation efficiency of the circuit can be improved.
