Subdivision control method of mine drainage system based on peak and valley electric charges

Abstract

The invention relates to the technical field of mine drainage underground, in particular to a subdivision control method of a mine drainage system based on peak and valley electric charges. Accordingto the method, the mine inflow calculation and periodic filtering equalization method is used for obtaining the predicated water inflow q of one calculation period Tmin, the predicated water inflow qserves as the predicted value of peak avoiding and valley filling segmented decision making, the water level of a water sump is divided into four segments, and comprises the ultralow water level HLL,the low level HL, the high level HH and the ultra-high water level HHH, according to the peak and valley electric charges, 24 hours of one day are divided into four electric sections according to theelectricity price, the electric sections include a valley section, a peak section, a flat section I and a flat section II, a mathematic model of the water pump input number n with q, h and t is built,according to the value of the predicated water inflow q and the electric section information, the mathematic model is selected, the water pump value required to be input on the corresponding time segment is calculated, opening of water pumps with the corresponding number is controlled, automatic unmanned control is achieved, the mine drainage system is precisely controlled, the water pump frequent start and stop can be avoided, and the energy saving and cost saving effect is more obvious.

Description

technical field [0001] The invention relates to the technical field of mine underground drainage, in particular to a segmental control method for a mine drainage system based on peak and valley electricity prices. Background technique [0002] The underground drainage system is a very important part of ensuring safe production in the mine. It is also a large energy consumer in mine mining, accounting for about 20% of the total electricity consumption of coal mines, and some coal mines with large water inflows reach more than 30%. [0003] Since 2011, my country has issued the "Power Demand Side Management Measures" to promote and improve the peak-valley electricity price system. The common 24-hour peak-valley electricity price segmentation method is as follows: figure 1 As shown, in order to save energy consumption under the premise of ensuring safe production, many mines began to use the difference in peak and valley electricity prices to optimize the management of water pu...

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Problems solved by technology

[0010] The advantages of using the above two methods are that it is easy to implement, simple to control, and can achieve a certain degree of energy saving and cost reduction in the drainage system. low efficiency

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