Power supply system and method of cement plant self-provided power plant based on multi-purpose diesel generator

A technology of diesel generator and power supply system, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of large land occupation, high cost, low use probability, etc., to reduce the floor space, improve the utilization rate, and reduce the number of units. Effect

Pending Publication Date: 2018-12-21
SINOMA INT ENG
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  • Abstract
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Problems solved by technology

However, these three types of diesel generators are less likely to be used, occupy more land, and cost more

Method used

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  • Power supply system and method of cement plant self-provided power plant based on multi-purpose diesel generator

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] The embodiment of the present invention discloses a self-contained power supply system for a cement plant based on a multi-purpose diesel generator. In addition to the power supply, it can be connected to the security section of the power plant through a step-down transformer, and the low-voltage security load of the power supply plant can be used; it can also be sent to the high-voltage bus bar of the cement plant through a high-voltage switch cabinet and a high-voltage cable to provide starting power for the start-up of large motors. Such as figure 1 As shown, its main structure includes diesel generator, first high-voltage switchgear QF11, second high-voltage switchgear QF12, third high-voltage switchgear QF21, fourth high-voltage switchgear QF22, fifth high-voltage switchgear QF23, sixth high-voltage switch...

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Abstract

The invention discloses a power supply system and method of a cement plant self-provided power plant based on a multi-purpose diesel generator. A black start power supply in the system is a light diesel generator, is arranged on the high-voltage bus bar of the power plant, can be connected to the security section of the power plant through a step-down transformer besides used as the starting powersupply during the black start of the power plant, so that the low-voltage security load of the power supply plant can be used; The black start power supply, through the high-voltage outlet switchgearand high-voltage cable, can also be sent to the cement plant total drop of high-voltage bus, for large motor start-up power supply. Compared with the prior art, the invention can avoid the repeated arrangement of the diesel generator of the power plant and the cement plant, improves the utilization rate of the diesel generator, greatly reduces the equipment construction and operation and maintenance cost, effectively reduces the cost and reduces the occupied area.

Description

technical field [0001] The present invention relates to a power supply system and method for a self-provided power plant of a cement plant based on a multi-purpose diesel generator, which realizes multiple functions of the diesel generator for the isolated grid operation of a self-provided coal-fired power plant of a cement plant, including the black start of the power plant Power supply, security power supply of power plant and starting power supply of large motor in cement plant. Background technique [0002] In areas or countries with relatively weak power network construction, cement plants need to configure coal-fired power plants as self-contained power plants, and the coal-fired power plants run in isolated grid with the cement plant. That is to say, coal-fired power plants are required to have a black start function first, and then when the whole plant fails and the power is cut off, it is necessary to ensure that the steam turbine does not run out of oil, the boiler...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
CPCH02J3/46
Inventor 邓国平杨万纲印志松赵美江韩方学苏进涛李野光沈加宁李传祥董成键王简婷
Owner SINOMA INT ENG
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