Power Effective Control of Pumping Out Water from the Mine
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Abstract
In the article the results of research of possibility of practical realization power of the effective adjusting of pumping out of water are presented from a mine. It is marked that one of the most power-hungry technological processes at the underground method of mining is pumping out of water on a surface, on the depth of mine the natural exchange of water is practically absent, therefore moving of underwaters is possible only through the special equipment that is intended for the pumping-over of mine waters. Effective management of equipment that moves groundwater to the surface will reduce the cost of finished products.
The use of chart of the incremental pumping out of water determines the necessity of application power of effective method of control an equipment that is intended for the pumping-over of mine waters. Such method must take into account differentiation of tariffs of cost of electric energy. The system of pumping out of water from a mine consists of equipment that pumps out water from five levels of mine on a surface. A basic equipment that is intended for the pumping-over of mine waters are chempumps with high-voltage asynchronous electric motors with a short-circuited rotor.
Adjusting of the productivity at every level of pumping out is executed by an on-off pumps, it promotes frequency of including and disconnecting of electric motors that with them is connected, that assists reduction of term of work of equipment without breakages. Possibility of smooth start of electric motors is therefore considered, that is arrived at by the choice of parameters of Lqr- regulator on principles of linear and compromise optimum. For the decision of this problem corresponding operators in the program MATLAB®, by means of that a functional that was offered is minimized, are used, on the vector of the state of the system. The result of calculations is a matrix of optimal feed-backs on state of the system variables. On charts transitional the processes of state of the system variables can be seen, that the start of electric motor takes place fluently, a current at starting does not exceed a basic value, it testifies to stability of the system on a task. The decision of problem of Lqr- Optimization provides possibility of direct start of electric motors, that in a prospect will allow to pass to practical realization power of the effective adjusting pumping out of water from a mine.
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