Intelligent Prediction of the Construction Cost of Substation Projects Using Support Vector Machine Optimized by Particle Swarm Optimization

Table 1

Sixteen key influencing factors.

Index type	Key influencing factors	Serial number
Technical parameter level	Transformer capacity
	Number of circuit breaker
	Number of exit route
	Number of reactors
	Number of capacitor
	Control cable length
	Power cable length
	Concrete consumption
	Steel consumption
Cost parameter level	Price of transformer
	Price of circuit breaker
	Price of concrete
	Price of steel
External environment	Site acquisition cost
	Site area
	Planning cost