CN113863980A - Safe, intelligent and energy-saving mine drainage method - Google Patents
Safe, intelligent and energy-saving mine drainage method Download PDFInfo
- Publication number
- CN113863980A CN113863980A CN202111224885.XA CN202111224885A CN113863980A CN 113863980 A CN113863980 A CN 113863980A CN 202111224885 A CN202111224885 A CN 202111224885A CN 113863980 A CN113863980 A CN 113863980A
- Authority
- CN
- China
- Prior art keywords
- water
- drainage
- time
- strategy
- safe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 283
- 230000005611 electricity Effects 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000005457 optimization Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000003657 drainage water Substances 0.000 claims 1
- 238000011217 control strategy Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Computer Hardware Design (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides a safe, intelligent and energy-saving mine drainage method, which comprises the following steps: s1: judging whether to interrupt the decision instruction according to the safety condition interrupt strategy, if so, interrupting the decision, waiting for the next operation cycle, and repeating the step S1; otherwise, executing step S2; s2: calculating the time of reaching the liquid level warning value according to the water inflow amount and the water level of the water bin so as to obtain a drainage time interval; s3: and judging the electricity price gear type, and combining the drainage time interval to obtain a drainage optimization strategy. The invention can dynamically adjust according to the water inflow amount, set an adjusting time period, adjust the control logic and reduce the power consumption cost of the drainage system.
Description
Technical Field
The invention relates to the technical field of drainage methods, in particular to a safe, intelligent and energy-saving mine drainage method.
Background
Mine drainage is a protective measure for safely, efficiently and timely discharging underground mine water to the ground, and is one of essential safety measures in the coal mining process. Meanwhile, the power consumption of the mine drainage equipment is particularly remarkable. Therefore, a reasonable drainage strategy is formulated, and the production cost of coal mine enterprises can be reduced.
The traditional control strategy of avoiding peaks and valleys is that the water level is divided into a high warning water level, a high water level and a low water level, the purpose of avoiding peaks and valleys is achieved by delaying the starting time of a water pump, when the water level reaches the high water level, a pump station is started to drain water immediately in the time period of the low valleys of the power consumption, the pump station is not started to drain water in the time period of the high peaks of the power consumption, and the pump is started to drain water when the water level exceeds the high warning water level; when the water level drops to a low level, the water discharge is stopped. The control logic is too coarse to be adjusted in time according to the change of the water level, and the control strategy cannot adapt to the actual situation, so that the change situation of the water level is not expected, and the drainage cost is increased. In addition, in traditional control strategy, the system can not adjust the quantity of opening of water pump according to the size of gushing water volume, leads to control strategy reasonable inadequately under certain circumstances, has the drawback.
Disclosure of Invention
In view of the above, the invention aims to solve the problems of simplicity, high electricity cost and the like of the traditional peak and valley avoiding control strategy, and designs a safe, intelligent and energy-saving mine drainage method based on the peak and valley avoiding optimal control strategy. The water level control logic is further subdivided, the control logic can be adjusted according to time and the water inflow amount, compared with the traditional strategy, the control strategy is safer and more reasonable, and the electricity cost of the drainage system is greatly reduced on the premise of ensuring water safety.
In order to solve the technical problems, the invention adopts the technical scheme that: a safe, intelligent and energy-saving mine drainage method comprises the following steps:
s1: judging whether to interrupt the decision instruction according to the safety condition interrupt strategy, if so, interrupting the decision, waiting for the next operation cycle, and repeating the step S1; otherwise, executing step S2;
s2: calculating the time of reaching the liquid level warning value according to the water inflow amount and the water level of the water bin so as to obtain a drainage time interval;
s3: and judging the electricity price gear type, and combining the drainage time interval to obtain a drainage optimization strategy.
In the present invention, preferably, the safety condition interruption strategy is to perform the water inrush rate measurement step when the water level of the sump is the lowest drainage level; otherwise, no action is taken, the decision is interrupted, and the next operation cycle is waited.
In the invention, preferably, the step of measuring and calculating the water inrush rate is to set a threshold Qm, judge whether the water consumption of the water sump exceeds the threshold Qm, and if so, immediately drain water; otherwise, judging whether the water level of the water sump exceeds a liquid level warning value, if so, immediately draining water; otherwise, step S2 is executed.
In the present invention, preferably, the electricity rate gear types include a valley period, a flat period, and a peak period.
In the present invention, preferably, the drainage optimization strategy is set to drain according to a first drainage strategy when the electricity price gear type is the valley period; when the electricity price gear type is a flat section, draining water according to a second drainage strategy; and when the electricity price gear type is in a peak time period, water storage is kept.
In the present invention, preferably, the first drainage strategy is set to be t2The time t for draining the water of the drained water sump is calculated when the drained water sump is started at the moment
Wherein t represents the drainage time, V represents the water quantity of the water sump, r represents the water inflow rate, delta t represents the time difference from the end of the valley period, n represents the number of water pumps, q represents the flow rate of the pump station, when (8-t)2-t)<At 1, the water is drained.
In the invention, preferably, the second drainage strategy is set to drain the sump water for the drainage time
Wherein t represents the drainage time, V represents the water quantity of the water bin, r represents the water inflow rate, delta t represents the time difference from the end of the valley period, q represents the flow rate of the water pump, and t is judged>When the pressure is higher than 8 times, the pressure is lower than the reference pressure,the water pump is started to drain water in advance to meet the requirement of delta t-t<And 1, draining water.
In the present invention, preferably, the water inflow data is collected to obtain a water inflow variation curve, the water inflow variation curve is fitted to an infinite linear curve, and the water inflow variation rate r in unit time is obtained by a segmentation method (Q ═ Q)2-Q1)/(t2-t1) Wherein Q represents the water inflow amount and t represents the current moment.
The invention has the advantages and positive effects that: the invention is based on the dynamic planning of the optimal control theory, sets different control logics for each water level interval by subdividing the water level of the water sump, dynamically adjusts the control logics according to the water inflow amount, sets an adjustment time period, adjusts the control logics and reduces the power consumption cost of a drainage system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a prior art sump water level;
FIG. 2 is a flow chart of a prior art sump water level control logic;
FIG. 3 is a schematic diagram of a multi-decision process of a safe, intelligent, and energy-efficient mine drainage method of the present invention;
FIG. 4 is a graph of water inflow variation for a safe, intelligent and energy-saving mine drainage method of the present invention;
FIG. 5 is a schematic diagram of the sump water level for a safe, intelligent and energy-saving mine drainage method of the present invention;
fig. 6 is a control flow chart of a safe, intelligent and energy-saving mine drainage method of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The peak-valley time-of-use electricity price adopts the national standard, and 24 hours a day is divided into five time intervals, a low-valley time interval: 00: 00-8: 00, flat period: 12: 00-18: 00 and 22: 00-24: 00, peak hours: 8: 00-12: 00 and 18: 00-22: 00.
the pricing method comprises the following steps: the electricity price at the valley period is 0.1703 yuan/kwh, the electricity price at the normal period is 0.4262 yuan/kwh, and the electricity price at the peak period is 0.6821 yuan/kwh, which are shown in Table 1.
TABLE 1
| Electricity price gear | Time period | Electricity price (Yuan/kwh) |
| Off-peak time period | 00：00～8：00 | 0.1703 |
| Flat section | 12: 00-18: 00 and 22: 00-24: 00 | 0.4262 |
| Peak hours | 8: 00-12: 00 and 18: 00-22: 00 | 0.6821 |
The traditional 'peak avoidance and valley achievement' divides the water level of the water sump into three levels which are respectively a high warning water level L3High water level L2Low water level L1As shown in FIG. 1, during off-peak periods, when the water level in the sump reaches a high level L2When the water pump is started to drain water, if the water level of the water sump is lower than the low water level L1Stopping the pump, otherwise, repeatedly executing; in the peak time period, the water level of the water sump reaches the high warning water level L3When the water pump is started to drain water, if the water level of the water sump is lower than the high water level L2Stopping the pump, otherwise, repeatedly executing; a specific control logic flow diagram can be seen in fig. 2.
As shown in fig. 6, the invention provides a safe, intelligent and energy-saving mine drainage method, which comprises the following steps:
s1: judging whether to interrupt the decision instruction according to the safety condition interrupt strategy, if so, interrupting the decision, waiting for the next operation cycle, and repeating the step S1; otherwise, executing step S2; mine safety production is the premise of reasonably implementing other optimization strategies, and in order to ensure normal discharge of water burst, upper and lower limits of water level are set, which is the highest consideration factor in priority sequence: whether or not atWhen the water level is lower than the lowest drainable liquid level L during peak or valleylIf so, no water is drained; if the water level is higher than the liquid level warning value LhAnd the water is drained immediately to prevent accidents. The decision is an unconditional interruption decision, if the condition is met, the water level overrun control interruption is switched to wait for the next operation period, and other control strategies cannot override the strategy.
S2: calculating the time of reaching the liquid level warning value according to the water inflow amount and the water level of the water bin so as to obtain a drainage time interval; in this embodiment, the system operation period is set to 5 minutes, that is, the measured value of the water inrush rate is updated every 5 minutes during the system operation, and if the water inrush rate suddenly increases, the system is interrupted accordingly. The system determines the number of the water pumps needing to be started according to the water inrush rate, issues early warning information to remind an operator on duty to start the corresponding water pumps to drain in advance, and prevents accidents caused by the condition that the operator on duty cannot find out in time when the water quantity is suddenly increased.
S3: and judging the electricity price gear type, and combining the drainage time interval to obtain a drainage optimization strategy.
In this embodiment, further, the safety condition interruption strategy is to perform the water inrush rate measurement step when the water level of the water sump is the lowest drainage level; otherwise, no action is taken, the decision is interrupted, and the next operation cycle is waited.
In this embodiment, further, the step of measuring and calculating the water inrush rate is to set a threshold Qm, determine whether the water consumption of the sump exceeds the threshold Qm, and if so, immediately drain water; otherwise, judging whether the water level of the water sump exceeds a liquid level warning value, if so, immediately draining water; otherwise, step S2 is executed. Since the water inflow rate corresponds to the water inflow amount, that is, a threshold value for the water inflow rate may be set, and a threshold value for the water inflow amount may also be set.
In the present embodiment, further, the electricity rate gear types include a valley period, a flat period, and a peak period.
In the embodiment, further, the drainage optimization strategy is set to drain according to the first drainage strategy when the electricity price gear type is the valley period; when the electricity price gear type is a flat section, draining water according to a second drainage strategy; and when the electricity price gear type is in a peak time period, water storage is kept.
In this embodiment, further, the first drainage strategy is set to t2The time t for draining the water of the drained water sump is calculated when the drained water sump is started at the moment
Wherein t represents the drainage time, V represents the water quantity of the water sump, r represents the water inflow rate, delta t represents the time difference from the end of the valley period, n represents the number of water pumps, q represents the flow rate of the pump station, when (8-t)2-t)<At 1, the water is drained.
In this embodiment, further, the second drainage strategy is set to drain the sump water for a drainage time
Wherein t represents the drainage time, V represents the water quantity of the water bin, r represents the water inflow rate, delta t represents the time difference from the end of the valley period, q represents the flow rate of the water pump, and t is judged>When 8 hours, the water pump is started to drain water in advance, and the requirement of delta t-t is met<And 1, draining water.
In this embodiment, the water inflow data is further collected to obtain a water inflow variation curve, the water inflow variation curve is fitted to an infinite linear curve, and the water inflow variation rate r in unit time is obtained by a piecewise method (Q ═ Q)2-Q1)/(t2-t1) Wherein Q represents the water inflow amount and t represents the current moment.
The working principle and the working process of the invention are as follows: drainage systems are typically provided with multiple water pumps. Determining the number of running water pumps according to different water inrush conditions so as to improve the service efficiency of the water pumps; the principle of avoiding peak and then valley is adopted, the water pump is operated less in the electricity utilization peak period, and the water is fully drained in the valley period so as to save the drainage cost. The object of dynamic programming research is the decision process optimization problem. According to the optimality principle, the remaining decisions must constitute an optimal strategy for the first time, no matter what the initial state and initial decision are. By combining the drainage characteristics of the drainage system, the drainage process can be divided into a plurality of interconnected stages, and a decision needs to be made in each stage of the drainage process, so that the best dynamic effect of the whole drainage process is achieved. The decision making at each stage depends on the current situation and also influences the later development. When the decision of each stage is determined, a decision sequence is formed. In the system, the water level sensor is used for monitoring the water level, the change condition of the water level can be measured, the precision is 1cm, and the system meets the requirements in an underground drainage system. The time of reaching the water level threshold value of the water sump is calculated according to the water inflow amount and the water level of the water sump, the time of reaching the water level threshold value of the water sump is calculated, water can be drained in the period of time, the time of draining is judged to be optimal according to the time interval of the step electricity price, under the condition that the time interval of the electricity price meets, the lower the electricity price is, the better the electricity price is, and the drainage time is intelligently recommended by the system. The flow of sump drainage control is shown in fig. 6.
The volume of the water sump is recorded as V, and the lowest drainable liquid level is recorded as LlAnd the liquid level warning value is recorded as LhThe water inflow rate is recorded as r, the water drainage time is recorded as t, the time difference from 8 points, namely the time difference of the end of the valley time is recorded as delta t, and the number of the water pumps is recorded as n. Each drainage period is equally divided into N segments, (N e [1,5 ]]) And the running condition of the unit in each section is unchanged. Setting the water level of the kth section of water sump as X (k) (X)L≤X(k)≤XH) And k is a discrete time variable. Wherein the water inflow of the sump is a function of the water level, i.e.:
f(k)＝f[X(k)] (1)
the functional relation between mine water inflow and water level is as follows:
f(k)＝F[X(k)] (2)
if the water pump room is provided with n water pumps which work in parallel, the operation state of the ith water pump at the moment k is ui(k)，ui(k) 0 denotes shut down, ui(k) Run is indicated at 1.
The control decision vector of the water pump room is as follows:
U(k)＝{u1(k),u2(k),...,un(k)} (3)
the power consumption vector of the water pump in each time interval is as follows:
B＝{β1,β2,...,βn} (4)
the electricity price c (k) in one period (24h) is a function of time, then:
the optimal control of the water pump house can be described as that in the drainage period, the optimal control vector U is selected*＝{U*(0),U*(1),...,U*(N-1) }, minimizing the electric charge expenditure in one period. Even if the cost function:
becoming the optimal performance functional:
the optimal control process of the drainage is regarded as a multi-step decision process, and the multi-step decision process is shown in fig. 3.
According to the requirement of an optimality principle, the process of implementing the optimal decision by the dynamic programming method is to convert a multi-section decision problem into a series of single-section decision problems and reversely push the problem from the last section state to the initial section.
(ii) drainage strategy
In the dynamic programming method adopted by the system: the water quantity of the water bin, the water inflow rate and the peak-valley time period are dynamic variables, and the working condition, efficiency and flow of the water pump unit are static constants. The dynamic variable is a variable parameter of a control vector determined by an optimality principle, the optimal solution is obtained by continuously optimizing a control strategy through the change of the variable, and when the safety condition is met, the optimal control function is obtained by minimizing the energy consumption of the drainage system.
Calculation of Water inrush Rate
Considering that the water inflow is a nonlinear function, the water inflow change curve in one day can be approximately fitted into a combination of an infinite linear curve by adopting a segmentation method, and then the water inflow change rate in a single period of time can be segmented and solved to be used as a prediction parameter of dynamic programming.
As can be seen from FIG. 4, t1，t2The change of water inflow at a time can be approximately regarded as a short straight line, so t2The water inrush rate at the moment is approximately r ═ Q2-Q1)/(t2-t1)。
③ control logic
The optimal control process takes into account the current values of the variables and the stored values at the previous moment and makes a reasonable prediction, thereby giving an optimal strategy. The underground drainage system is different from other units and mainly reflects the uncertainty of tasks (the non-linearity of water burst change, the upper and lower limit of water level safety and other limiting factors), so that the system adopts multi-stage decision making, and judges stage by stage to provide a reasonable strategy.
Mine safety production is the premise of reasonably implementing other optimization strategies, and in order to ensure normal discharge of water burst, upper and lower limits of water level are set, which is the highest consideration factor in priority sequence: when the water level is lower than the lowest drainable liquid level L whether in the peak or the valleylIf so, no water is drained; if the water level is higher than the liquid level warning value LhAnd the water is drained immediately to prevent accidents. The decision is an unconditional interruption decision, if the condition is met, the water level overrun control interruption is switched to wait for the next operation period, and other control strategies cannot override the strategy.
In this embodiment, the system operation period is set to 5 minutes, that is, the calculated value of the water inrush rate is updated every 5 minutes during the system operation, which is the second factor considered by the priority sequence, and if the water inrush rate suddenly increases, the system will be interrupted accordingly. The system determines the number of the water pumps needing to be started according to the water inrush rate, and issues early warning information to remind an operator on duty to start the corresponding water pumps to drain in advance, so that accidents are prevented from being caused under the condition that the water volume is suddenly increased and the operator on duty cannot find the water pumps in time.
And on the premise of meeting the control strategies of the two priorities, the system is in a normal economic drainage state. The system corrects the control strategy according to the updated water sump water quantity and the water inflow rate every 5 minutes, and the electricity price gear type is taken as a consideration factor to provide a proper drainage strategy for the staff on duty.
(1) In the peak period, the electricity price is highest, and water is stored as much as possible;
(2) and during leveling, logic prediction is carried out, and whether the time at the valley time is enough to completely discharge the water inrush in the water sump is predicted according to the current water inrush quantity and the water inrush rate. Starting n water pumps simultaneously, calculating according to the water inrush rate when starting the number n of the water pumps, and then:
in the formula: t represents the drainage time, V represents the water quantity of the water sump, r represents the water inflow rate, delta t represents the time difference from the end of the valley period, n represents the number of water pumps, and q represents the flow of the pump station;
and (3) judging t:
t >8 indicates that if n water pumps run together at the valley, the gushing water can not be completely discharged, the water pumps are started to discharge water in advance, and the water discharge time is set as the time of delta t-t <1, namely, the water discharge is started one hour in advance. Ensure that the water is completely drained before the peak period comes, and store water as much as possible during the peak.
When t is less than or equal to 8, the water can be completely discharged in the valley section, and the water does not need to be discharged in advance.
(3) And in the valley section, after entering the valley section, selecting proper pump starting time, measuring and calculating the optimal pump starting time by the system every 5 minutes, starting a corresponding water pump according to an even wear principle, starting water drainage, and completely draining the water in the water sump before the valley section is finished. Let t2The water requirement for starting the draining water sump at the moment is t, then:
in the formula: t represents the drainage time, V represents the water sump volume, r represents the water inrush rate, Δ t represents the time difference from the end of the valley period, n represents the number of water pumps, and q represents the pump station flow.
When (8-t)2-t)<And 1 hour, namely starting the water pump to drain when the difference between the residual time and the required drainage time is less than one hour.
n is calculated according to the water inflow rate, when the water inflow is small, only one water pump is started, and when the water inflow is large, at most 8 water pumps can be started to run in parallel.
The improved design idea of the invention is based on an optimal control theory, which refers to a basic condition and a comprehensive method for optimizing the performance index of a control system. The method can be summarized as that for a controlled dynamic system or motion process, an optimal control scheme is found from a class of allowed control schemes, so that the performance index value of the system is optimal while the motion of the system is transferred from an initial state to a specified target state. In the invention, dynamic programming is adopted to solve the optimal control problem, and the optimal control problem of a discrete system can be regarded as a multi-order decision problem, so that the optimal control problem can be solved by using the dynamic programming. Because the leading idea of dynamic programming is simple, a complex multi-order decision problem is convenient to be converted into a series of first-order decision problems, the problems are simplified and can be solved in sequence, and the method becomes an effective method for solving the multi-order decision problem. The improved principle of avoiding peaks and valleys is as follows: and adjusting the starting quantity and the starting and stopping states of the pump stations according to the water level of the water sump and the water inflow amount. The invention is based on the dynamic planning of the optimal control theory, sets different control logics for each water level interval by subdividing the water level of the water sump, dynamically adjusts the control logics according to the water inflow amount, sets an adjustment time period, adjusts the control logics and reduces the power consumption cost of a drainage system.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (8)
1. A safe, intelligent and energy-saving mine drainage method is characterized by comprising the following steps:
s1: judging whether to interrupt the decision instruction according to the safety condition interrupt strategy, if so, interrupting the decision, waiting for the next operation cycle, and repeating the step S1; otherwise, executing step S2;
s2: calculating the time of reaching the liquid level warning value according to the water inflow amount and the water level of the water bin so as to obtain a drainage time interval;
s3: and judging the electricity price gear type, and combining the drainage time interval to obtain a drainage optimization strategy.
2. The safe, intelligent and energy-saving mine drainage method according to claim 1, wherein the safe condition interruption strategy is to perform a water inrush rate measurement step when the sump water level is the lowest drainage water level; otherwise, no action is taken, the decision is interrupted, and the next operation cycle is waited.
3. The safe, intelligent and energy-saving mine drainage method according to claim 2, wherein the water inrush rate measuring and calculating step is to set a threshold Qm, judge whether the water consumption of the water sump exceeds the threshold Qm, and immediately drain water if the water sump water consumption exceeds the threshold Qm; otherwise, judging whether the water level of the water sump exceeds a liquid level warning value, if so, immediately draining water; otherwise, step S2 is executed.
4. A safe, intelligent and energy-saving mine drainage method as claimed in claim 1, wherein the electricity price gear types include low valley period, flat period and peak period.
5. A safe, intelligent and energy-saving mine drainage method according to claim 1, characterized in that the drainage optimization strategy is set to drain according to a first drainage strategy when the electricity price gear type is a valley period; when the electricity price gear type is a flat section, draining water according to a second drainage strategy; and when the electricity price gear type is in a peak time period, water storage is kept.
6. A safe, intelligent and energy-saving mine drainage method as claimed in claim 5, wherein the first drainage strategy is set to set t2The time t for draining the water of the drained water sump is calculated when the drained water sump is started at the moment
Wherein t represents the drainage time, V represents the water quantity of the water sump, r represents the water inflow rate, delta t represents the time difference from the end of the valley period, n represents the number of water pumps, q represents the flow rate of the pump station, when (8-t)2-t)<At 1, the water is drained.
7. A safe, intelligent and energy-saving mine drainage method as claimed in claim 5, wherein the second drainage strategy is set to drain the sump water for a drainage time of
Wherein t represents the drainage time, V represents the water quantity of the water bin, r represents the water inflow rate, delta t represents the time difference from the end of the valley period, q represents the flow rate of the water pump, and t is judged>When 8 hours, the water pump is started to drain water in advance, and the requirement of delta t-t is met<And 1, draining water.
8. The safe, intelligent and energy-saving mine drainage method according to claim 1, characterized in that water inflow data is collected to obtain a water inflow change curve, the water inflow change curve is fitted to an infinite linear curve, and a water inflow change rate r in unit time is obtained by a segmentation method (Q ═ Q-2-Q1)/(t2-t1) Wherein Q represents the water inflow amount and t represents the current moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111224885.XA CN113863980B (en) | 2021-10-21 | 2021-10-21 | Safe intelligent energy-saving mine drainage method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111224885.XA CN113863980B (en) | 2021-10-21 | 2021-10-21 | Safe intelligent energy-saving mine drainage method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113863980A true CN113863980A (en) | 2021-12-31 |
| CN113863980B CN113863980B (en) | 2024-06-14 |
Family
ID=78996854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111224885.XA Active CN113863980B (en) | 2021-10-21 | 2021-10-21 | Safe intelligent energy-saving mine drainage method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113863980B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6462712A (en) * | 1987-09-03 | 1989-03-09 | Fuji Electric Co Ltd | Control method for multistage series pump plant group |
| JPH0498502A (en) * | 1990-08-17 | 1992-03-31 | Meidensha Corp | Control system for number of pumps with fuzzy inference |
| JP2006336349A (en) * | 2005-06-03 | 2006-12-14 | Hitachi Ltd | Tunnel drainage facility monitoring control method and tunnel drainage facility monitoring control system |
| UA108708C2 (en) * | 2014-03-17 | 2015-05-25 | Державний Вищий Навчальний Заклад "Національний Гірничий Університет" | METHOD OF control of MAIN dewatering INSTALLATION of coal mine |
| CN110359956A (en) * | 2019-07-08 | 2019-10-22 | 洛阳中重自动化工程有限责任公司 | Peak-valley electricity price-based segmented control method for mine drainage system |
| CN110966046A (en) * | 2019-12-19 | 2020-04-07 | 淮南市阶梯电子科技有限公司 | Ground remote monitoring system of mine drainage device |
| CN111677549A (en) * | 2020-06-10 | 2020-09-18 | 开滦（集团）有限责任公司电信分公司 | Mine drainage control method, device, equipment and storage medium |
| CN112832861A (en) * | 2021-01-27 | 2021-05-25 | 鞍钢集团矿业设计研究院有限公司 | Water sump liquid level grading mine drainage control method based on peak-valley period |
| CN112879089A (en) * | 2021-01-27 | 2021-06-01 | 鞍钢集团矿业设计研究院有限公司 | Mine drainage control method based on water sump liquid level and residual time in peak-valley period |
-
2021
- 2021-10-21 CN CN202111224885.XA patent/CN113863980B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6462712A (en) * | 1987-09-03 | 1989-03-09 | Fuji Electric Co Ltd | Control method for multistage series pump plant group |
| JPH0498502A (en) * | 1990-08-17 | 1992-03-31 | Meidensha Corp | Control system for number of pumps with fuzzy inference |
| JP2006336349A (en) * | 2005-06-03 | 2006-12-14 | Hitachi Ltd | Tunnel drainage facility monitoring control method and tunnel drainage facility monitoring control system |
| UA108708C2 (en) * | 2014-03-17 | 2015-05-25 | Державний Вищий Навчальний Заклад "Національний Гірничий Університет" | METHOD OF control of MAIN dewatering INSTALLATION of coal mine |
| CN110359956A (en) * | 2019-07-08 | 2019-10-22 | 洛阳中重自动化工程有限责任公司 | Peak-valley electricity price-based segmented control method for mine drainage system |
| CN110966046A (en) * | 2019-12-19 | 2020-04-07 | 淮南市阶梯电子科技有限公司 | Ground remote monitoring system of mine drainage device |
| CN111677549A (en) * | 2020-06-10 | 2020-09-18 | 开滦（集团）有限责任公司电信分公司 | Mine drainage control method, device, equipment and storage medium |
| CN112832861A (en) * | 2021-01-27 | 2021-05-25 | 鞍钢集团矿业设计研究院有限公司 | Water sump liquid level grading mine drainage control method based on peak-valley period |
| CN112879089A (en) * | 2021-01-27 | 2021-06-01 | 鞍钢集团矿业设计研究院有限公司 | Mine drainage control method based on water sump liquid level and residual time in peak-valley period |
Non-Patent Citations (1)
| Title |
|---|
| 王东;李维熙;冯立杰;: "矿井自动排水优化控制策略的研究", 中州煤炭, no. 02, 25 May 2008 (2008-05-25), pages 23 - 24 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113863980B (en) | 2024-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110359956B (en) | Sectional control method of mine drainage system based on peak-valley electricity price | |
| CN105020845B (en) | A kind of air-conditioning system linkage energy-saving control system and method | |
| EP2881583B1 (en) | Method and device for optimizing operational control of compressors in multi-couple unit air-conditioning system | |
| CN108279632B (en) | A kind of pumping plant wisdom draining Dispatching Control System | |
| CN102162443A (en) | Speed regulating and energy saving control method for multi-pump station municipal drainage pipe network system | |
| CN108168052B (en) | optimal start-stop control method for central air-conditioning refrigeration system | |
| CN204902127U (en) | Terminal coordinated control's of air conditioner water system and air conditioner economizer | |
| CN107994594B (en) | Maximum demand control method based on energy storage system | |
| CN102265035A (en) | Method for controlling compressor installation | |
| CN110529373B (en) | Control method, system and device for water pumping energy-saving peak regulation | |
| CN113515096A (en) | Intelligent scheduling method for drainage facility based on meteorological big data | |
| CN106199172B (en) | A kind of monitoring method and system of electricity consumption situation | |
| CN111677549A (en) | Mine drainage control method, device, equipment and storage medium | |
| CN212132815U (en) | Intelligent cold station control system | |
| CN102799201A (en) | Communication machine room temperature energy-saving control method and system based on equipment life factors | |
| CN112502950B (en) | Sectional drainage control method for water storage bin of drainage pump station | |
| CN113863980B (en) | Safe intelligent energy-saving mine drainage method | |
| CN112665127B (en) | Ice storage air conditioning system and control method, device and controller thereof | |
| CN110707373A (en) | Energy storage system based on storage battery fatigue monitoring and dynamic maintenance | |
| CN101963148A (en) | Pumping termination and energy saving control method for variable frequency water supply equipment provided with PLC control cabinet | |
| CN110953628A (en) | Multistage series heat pump system and control method thereof | |
| CN114776268B (en) | Green low-carbon intelligent group control method and system for oil extraction system | |
| CN210768903U (en) | Mine drainage system is based on sectional control device of peak valley price of electricity | |
| CN115498704A (en) | Method, device and system for controlling valley startup of valley cascade power plant | |
| CN215442256U (en) | Rainwater regulation and drainage unpowered control energy-saving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |