The design theme of "the township 供电所 the supply of design the main contents including ： 10 3 4kv 变电所 main transformer choose ； 变电所 the design electrical wiring ； short-circuit current computing ； the work load ； no power compensating ； （ 母线 and electrical equipment chosen and isolation of hv circuit switches， 避雷器 ） ； distribution device design ； relay protection plans for the protection of the design ； One in charge of design should be based on electrical supply reliability， flexibility and economical to design electrical terminals and the high profile adopted by the low side， 母线 a single 母线 in the form of electrical wiring ； low side of the statistical calculations of the needs of the law to reduce wastage ； no work to improve electrical energy accessibility and the design of the transformers choose and the transformer the electric wiring and computing power ； short-circuit current calculations include short time to choose and its specific value ； and electrical equipment chosen according to the amp rating and short-circuit current computing （ use the add method now ） ； relay protection is in a design on the velocity at the protection and the protection of the current design calculations ； the design details of 10kv overhead lines have a common accident analysis and reasons for the key word： Transformer choose your keywords ； electrical the relay terminals ； protection
The design theme of "the town's power supply " The main design elements include: 10/4kV choice of main transformer substation; substation electrical main wiring design; short-circuit current calculation; load calculation; reactive power compensation; electrical equipment choices (bus， high voltage circuit breaker， disconnecting switch， arrester); distribution equipment design; relay planning and design; lightning protection According to the main line should be designed to meet the electrical reliability， flexibility， economy requirements， the design of electrical wiring of high-pressure side of the main bus terminal with a single， low-pressure side of a single bus section forms the main electrical wiring; on the low side of the load of the statistical calculations coefficient method used needs; in order to reduce reactive loss and improve energy utilization， the design of a transformer selection， transformer power supply line power loss calculation; short-circuit current calculation， including the choice of short-circuit point and the specific numerical calculation; and electrical equipment choose the options according to current rating， according to short-circuit current calculation (in per unit of production method) method; relay designed mainly for transformer trip current protection and over current protection design calculation; the design of more common incidents on the 10kV overhead lines Analysis carried out and to make anti-accident Key words: transformer selection; electrical main connection; Relay
The design of the topic "township of the power supply system " powered The design of the main contents include: 10/4 kV main transformer substation choice， Substation auto-switch design， Short-circuit current calculation， Load calculation， Reactive power compensation， Electrical equipment selection (bus， high voltage circuit breaker， isolating switch， lightning arrester)， Distribution device design， Relay protection， planning and design， Lightning protection design According to the main electrical design should meet the reliability and flexibility， economy， the design of main electrical wiring high side by a single bus wiring， low voltage side of the single section of busbar auto-switch form， The statistics of low voltage side load calculation using need coefficient method， In order to reduce the loss of reactive power， improving the utilization ratio， the design of transformer， transformer power lines; power Short-circuit current calculation include the choice and short-circuit point numerical calculation， And electrical equipment selection adopted according to the rated current selection， according to the standard short-circuit current calculation method; what mix) Relay protection design of transformer is mainly for the protection and electrical flow over current protection design calculation， This design detailed consumers 10kV overhead lines of common accident reason analysis and anti-accident 变压器选择；电气主接线；继电保护Transformers， The main electrical wiring， Relay protection
