发电厂电气设计
电厂电气设计
摘
要
本设计的主要内容包括:10/0.4kV 变电所主变压器选择;变电所电气主接线设计;
短路电流计算;负荷计算;无功功率补偿;电气设备选择等。根据电气主线设计应满
足可靠性、灵活性、经济性的要求,本变电所电气主接线的高压侧采用单母线接线,低
压侧采用单母线分段的电气主接线形式;对低压侧负荷的统计计算采用需要系数法;
为减少无功损耗,提高电能的利用率,本设计进行了无功功率补偿设计,使功率因数
从 0.69 提高到 0.9;短路电流的计算包括短路点的选择及其具体数值计算;而电气设
备选择采用了按额定电流选择,按短路电流计算的结果进行校验的方法。
关 键 词
:发电厂;电网;电气;设计
Electricity Plant Design
ABSTRACT
The design of the main contents include : 10/0.4kV choice of main
transformer substation; substation main electrical wiring design; short-
circuit current calculation; load calculation; reactive power compensation;
electrical equipment selection. According to the main line should be
designed to meet the electrical reliability, flexibility, economy
requirements, the substation high voltage side of main power line
connection using a single bus, single bus low-voltage side of the main
electrical connection in the form section; on the low side of the load
Statistics calculated using the required coefficient; in order to reduce
reactive loss and improve energy utilization, the design of reactive power
compensation design, the power factor from 0.69 to 0.9; short circuit
short circuit current calculation, including the choice of specific numerical
calculation; and electrical equipment to choose from a selection at rated
current, according to the results of short-circuit current calculation
method of verification.
KEY WORDS:
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plant;power grid;electricity;design