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Load regulation method applied to isolated grid power supply system in cement factory

A load regulation and power supply system technology, applied in the direction of AC network voltage regulation, power network operating system integration, information technology support systems, etc., can solve problems such as load fluctuations, and achieve the effect of reliability.

Active Publication Date: 2018-08-28
ANHUI CONCH GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem of load fluctuations caused by frequent switching and switching of cement plants due to heavy load start and stop, and ensures the stability of the entire isolated grid power supply system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] According to the characteristics that cement plants often start and stop with heavy loads, in order to solve the load fluctuation problem caused by frequent switching and ensure the stability of the entire isolated grid power supply system, a set of power load regulation system is considered in the design of the power station to reduce the impact on Grid shock.

[0038] In addition, when one of the generator sets in the self-provided power station has insufficient power generation or suddenly breaks down, in order to ensure the stability of the entire power grid and prevent large-scale power outages, it is considered to install a set of low-frequency load shedding devices to reduce the load of the entire plant. Input classification, automatically realize orderly load shedding according to parameters such as power supply voltage and frequency.

[0039] The capacity of the isolated network load regulation control system is an important part of the program facilities, and ...

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PUM

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Abstract

The invention discloses a load adjusting method applied to a cement factory isolated grid power supply system. If power is vacant or voltage is too low in a power grid, four rounds of load shedding adjustment are adopted in turns, and after each round of load shedding adjustment, if the power is still vacant or the voltage is still too low, the next round of load shedding adjustment is carried out; in the first round of load shedding adjustment, 13.5% to 14.5% of total load is shed; in the second round of load shedding adjustment, 12.8% to 13.5% of total load is shed; in the third round of load shedding adjustment, 12% to 12.8% of total load is shed; and in the fourth round of load shedding adjustment, 10% to 11% of total load is shed. The load adjusting method can realize reliability, safety and economy of a power supply network according to electricity utilization specificity of cement factories.

Description

technical field [0001] The invention relates to the field of isolated grid power supply. Background technique [0002] With the national "Belt and Road" economic development strategy, my country has built large-scale clinker cement production lines in Southeast Asian countries in recent years. Because there is not enough power supply in the area where the cement plant is built, self-provided power plants (scale: 3×18MW) are used to Cement production provides electricity to meet the electricity demand of cement production. The self-provided power station is an isolated grid operation mode, and the starting power of the self-provided power station is provided by a diesel generator, but there is a lack of a control technology that can ensure the stability of the entire isolated grid power supply system, improve the quality of power consumption, and is suitable for the new grid operation mode. Contents of the invention [0003] The invention solves the problem of load fluctuat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14
CPCY02B70/3225Y04S20/222
Inventor 徐刚周金波张彦杰刘明同王其辉周湘谢林坡
Owner ANHUI CONCH GRP