农村电力网规划优化

Optimization of Power Network Planning of Our Countryside

农村电力网优化的关键问题是农村电力网的电压等级合理选择和各级电压变电所合理供 电容量与供电范围的确定，以满足农村供电的可靠性、经济性的要求．本文按允许电压降要求推 导出各级电压允许送电距离和按最小年费用法推导出各级电压经济供电半径．它是农村电力网规 划优化的科学依据之一，可供我国农村电力网规划定量计算．

The key problem of the optimization of power planning of our countryside, lies in choosing the voltage grade of power network there, and determining the rational capacity and range of power supply or transformer at different voltage. we must do our best to meet the requirements of the reliability and economy of power supply of our countryside. Accord- ing to the allowable voltage drop, we make a deduction of allowable distance to carry power at different volatges. And according to the minimum yearly cost, we make a deduction of the economical radius of carring power at different voltages. This provides a scientific basic for the optimization of power network planning in our countryside. It is a fixed quantity count in our power network planning.