Method for sharing power supply between the inlet and outlet of the inverted siphon of the aqueduct

Abstract

The invention discloses a sharing method for power supply for an inverted siphon inlet and an inverted siphon outlet of a water delivery ditch. First, a step-down substation is established in the inverted siphon outlet; the buildings at the inverted siphon inlet and the inverted siphon outlet share the power supply of the step-down substation; second, a dual-power-supply selector switch is arranged in the low-voltage bus wire-inlet cabinet of the step-down substation; the dual-power-supply selector switch is connected with the power supply output end of a diesel generating set; third, high-speed railways or high-speed roads are arranged between the buildings at the inverted siphon inlet and the inverted siphon outlet; cable-laying pipelines are established by adopting a pipe-jacking manner; and fourth, the cable is laid in an inverted-siphon water-delivery buried-culvert way which is defined in the specification when the inverted siphon and river are crossed. The sharing method has the advantages that the land with an area of 600m<2> can be saved in each inverted siphon position along the water delivery ditch; the establishment and investment of one step-down substation is omitted; the operational electric energy consumption of the step-down substation is reduced; the maintenance workload of the operator is reduced; and when the power-supply operating mode is changed, an operation on the high-voltage power distribution equipment is not required, so that the potential safety hazard of a wrong operation is eliminated.

Description

technical field [0001] The invention relates to a power supply method for the inlet and outlet of an inverted siphon of a water delivery canal, in particular to a method for sharing power supply between the inlet and outlet of an inverted siphon of an aqueduct. Background technique [0002] In the construction of long-distance water delivery canals, there are inevitably many intersections with large-scale infrastructure such as expressways, high-speed railways, ordinary roads, ordinary railways, and natural rivers along the canal. In order to ensure the natural flow state of the main channel of water delivery and improve economic benefits, inverted siphons are generally used at intersections with the above-mentioned highways, railways, and rivers; Inverted siphon buildings are divided into two parts: entrance buildings and exit buildings. The distance between the entrance and exit of an inverted siphon is determined by the scale of the roads, railways, rivers and other facil...

AI Technical Summary

Problems solved by technology

Its shortcomings are: 1. Import and export buildings and road facilities need to requisition 600m of land 2 , occupying a large amount of land and engineering investment

2. The electricity load capacity of imported buildings is 15kW~25kW. To build a step-down substation (35kV) specially for this purpose, a set of 35kV step-down substation equipment needs to be purchased, including 35kV power distribution equipment, 35kV step-down transformer, 0.4kV distribution Electrical equipment, high-voltage cables, etc. increase the cost of equipment procurement and installation, and the economical construction of the project is poor

3. During the small-load operation of imported building electrical equipment, the 35kV step-down substation equipment still needs to be operated with electricity, and there is a phenomenon of "big horse and small cart"

4. The workload of inspection and maintenance of the operating personnel is heavy. When the power supply operation mode changes, the electrical operation needs to operate the 35kV step-down substation equipment, and correspondingly handle operation tickets, work tickets, etc. The management procedures are cumbersome and increase the safety of misoperation Hidden danger

Images