TW201843376A - Optimized scheduling method for water supply network capable of achieving the effects of stabilizing the water pressure of the water supply network and reducing electricity cost at the same time - Google Patents

Abstract

The invention is an optimized scheduling method for water supply network, which is mainly to incorporate water towers and reservoirs of buildings within a water supply network area into an optimized water supply scheduling range. Based on the load trend forecast of the water supply network, the water consumption trend forecast of the buildings, and a liquid level value of a water tower level gauge and/or a liquid level value of a reservoir level gauge, the optimized water supply scheduling method of the water supply network can be calculated to determine when the water supply network supplies water into the water tower or the reservoir, which not only meets the water demand of the buildings, but also significantly reduces the difference between water consumption during the peak time and water consumption during the off-peak time, and achieves the effects of stabilizing the water pressure of the water supply network and reducing electricity cost at the same time.

Description

   Optimal dispatching method of water supply network   

The invention relates to an optimized dispatching method of a water supply pipe network, and particularly relates to a technical field related to incorporating a building water supply system in a water supply pipe network into a water supply dispatching range to achieve optimal water supply dispatching.

Republic of China Invention Patent Bulletin No. I415802 discloses an open water treatment system and its flow distribution device system. The system is an open water treatment system. A water level measuring device is installed between a fixed plate and a movable plate. Measure the head height, and adjust the flow of the shunt according to the head height.

In addition, the Republic of China Invention Patent Publication No. 201315870 discloses a smart high-rise energy-saving water distribution system, which is a smart high-rise energy-saving water distribution system suitable for high-rise residences and high-rise commercial spaces, but it only considers a single building. The water supply and distribution status of the building, and the need to install water towers on multiple residential floors, added a lot of cost and wasted space. In addition, the system did not integrate the water supply distribution of the entire water supply network, the load trend forecast of the water supply network, and the building. The forecast of the water consumption trend of the materials is included in the planning assessment, and there are indeed shortcomings in the overall tap water supply situation.

Therefore, the current technology and pre-patent case mentioned above need to be changed.

According to the lack of the existing ones mentioned above, it can be seen that the main technical problem to be solved by the present invention is to provide an effective improvement technical method for the regret that the existing water supply network cannot optimize water supply scheduling, resulting in waste or delay of water supply. The main technical idea is to include the water towers and reservoirs of buildings in the area of the water supply pipeline network into the optimized dispatching range of tap water supply, and enter the water tower or reservoir by the water supply pipeline network to provide water sources in a timely and active manner, so that the building can be satisfied. The water demand for materials can greatly reduce the difference between the peak and off-peak water supply network.

The technical solution adopted by the present invention to solve the technical problem is to provide an optimized dispatching method of a water supply pipe network, which refers to a water supply pipe network that introduces at least one water source connection into at least two buildings, and each of the buildings has at least one A water tower and a reservoir. The water tower is set on the top of the building, and each of the water towers has a water level switch and a water level gauge, and the water tower supplies tap water to at least one user in the building with at least one user water pipe. The pool is set under the building, and each of the reservoirs has a reservoir water level switch, a reservoir level gauge, a reservoir valve and a reservoir pump, and the reservoir and the water tower At least one building's water pipe is connected to each other, and the reservoir pump can judge the introduction of water from the building's water pipe to the water tower according to the state of the water level switch of the water tower; in addition, the water supply pipe network is provided with at least one pipe network. Water pipes, pipe network and water pipes are connected to the reservoir, and the reservoir is controlled by the water level switch of the reservoir to control the reservoir valve so that tap water is introduced into the reservoir; and the main dispatch method : First, within a set time, make a load trend prediction chart according to the relationship between the total water consumption of the water supply network and time, and make a water consumption trend prediction chart according to the relationship between the total water consumption of each building and time. And according to the load trend forecast chart, each water consumption trend forecast chart, and the level values of each water tower level gauge and each reservoir level gauge are separately detected and summed to form a storage of each building The amount of water, and then calculate the difference between the corresponding storage time and the corresponding time of the water consumption trend prediction map of the corresponding building, and according to the difference, the urgency of the water supply of all buildings in the water supply network is determined; Water towers and cisterns of buildings in the pipeline network area are included in the scope of optimal water supply scheduling, so that the water towers and cisterns of each building have the buffer function of water storage.

Secondly, control the opening and closing of the reservoir pump and the reservoir valve, that is, directly control the water intake of the water tower and the reservoir, respectively, and when the water tower level gauge and the reservoir level gauge have reached one of the presets, respectively The highest water level value is to close the pump and the valve of the reservoir respectively.

Furthermore, a water supply time length of each building is predicted according to each water storage amount, and a relationship curve chart is obtained according to the water intake amount and water inlet pressure of each reservoir, and the time required for water storage of each reservoir is known. Then, according to the existing water supply length of each building and the time required for water storage in each cistern, the algorithm is optimized, and the order of introduction of water sources to each building is scheduled.

As mentioned above, the optimization algorithm must meet the following three constraints: (1) the total water supply of the water supply network The total water inflow of the cistern of all the buildings; (2) the time of stopping the water supply of any building The water support time of the building; (3) the actual water inflow time of any building The building's cistern is estimated to enter the water. And by controlling the opening or closing of each reservoir valve, the total sum of the variation of the total water intake of all the reservoirs in a water supply period is the smallest; that is, ;among them,

n is the sampling point in the water supply period; D _i represents the total water inflow of the cisterns of all buildings in the i-th sampling point; D _avg represents the average of the total water inflow of the cisterns of all buildings in the water supply period.

In addition, the above algorithm can use global optimization, statistical regression, artificial neural network, or machine learning methods to seek to control the storage during the water supply period. The best combination of opening or closing of the pool valve.

In addition, the water supply network can be divided into a plurality of optimized dispatching groups, and the optimized dispatching group serves as the basic unit for independent optimal dispatching of the water supply network. In addition, the optimal dispatching group includes at least two buildings.

In addition, when the difference between the water storage amount and the corresponding time of the water consumption trend prediction chart of the corresponding building exceeds a predetermined value, the water supply network can determine the location and time period for closing the reservoir valve based on the position of the building that exceeds the predetermined value. .

Therefore, it can be seen that the main object of the present invention is to provide an optimized dispatching method of a water supply pipeline network, which mainly includes water towers and reservoirs of buildings in the area of the water supply pipeline network into the water supply optimization dispatching range, so that the Both the water tower and the water storage tank have the buffer function of water storage reserve, which can not only meet the water demand of the building, but also greatly reduce the difference between the peak and off-peak water supply of the water supply network, while achieving stable water pressure and reduction of the water supply network. The effectiveness of electricity bills, and can ease the pressure of water stress in large areas.

A‧‧‧ Water Supply Pipe Network

A1‧‧‧pipe network water pipe

A2‧‧‧Optimized dispatch group

B‧‧‧ Building

B1‧‧‧User water pipe

B2‧‧‧ users

B3‧‧‧Building Water Pipe

C‧‧‧Load Trend Forecast Chart

D‧‧‧ Water consumption trend forecast chart

F‧‧‧ Relationship Curve

1‧‧‧ water source

2‧‧‧ Water Tower

21‧‧‧Water Tower Water Level Switch

22‧‧‧Water Tower Level Gauge

3‧‧‧ cistern

31‧‧‧Reservoir water level switch

32‧‧‧Reservoir level gauge

33‧‧‧Reservoir valve

34‧‧‧Reservoir pump

The first diagram is a schematic diagram of the main architecture of the present invention.

The second figure is a schematic diagram of the water supply configuration of the building of the present invention.

The third diagram is a schematic diagram of a specific architecture embodiment of the present invention.

The fourth diagram is a schematic diagram of calculating the difference according to the water consumption trend prediction chart of the present invention.

The fifth diagram is a schematic diagram of another specific architecture embodiment of the present invention.

The sixth diagram is a schematic diagram of an embodiment of the total water supply of the water supply pipe network and the total water intake of the reservoirs of all buildings according to the present invention.

The seventh diagram is another schematic diagram of the main architecture of the present invention.

As shown in the first figure, the present invention refers to a water supply pipe network A applied to at least two buildings B, of which: the water supply pipe network A connects at least one water source 1 (such as tap water) to at least two buildings B ( The first picture uses at least three buildings as an example). The water supply pipe network A is provided with at least one pipe network water pipe A1, and the pipe network water pipe A1 is connected to the building B.

Building B, as shown in the second figure, each has at least a water tower 2 and a water storage tank 3, the water tower 2 is arranged on the top of the building B, and each of the water tower 2 has a water tower water level switch 21 and a water tower liquid level gauge 22, and The water tower uses at least one user water pipe B1 to supply water source 1 to users B2 in the building B (three users are taken as an example in the figure), and the reservoir 3 is located below the building B, and each of the reservoirs 3 has a Reservoir water level switch 31, a reservoir level gauge 32, a reservoir valve 33, and a reservoir pump 34, and at least one building water pipe B3 is connected between the reservoir 3 and the water tower 2 According to the state of the water tower water level switch 21, the water source 1 is introduced into the water tower 2 from the building water pipe B3, which means that when the water tower water level switch 21 is turned on, the reservoir pump 34 is started. The water source 1 is introduced into the water tower 2 through the building water pipe B3, and when the water level switch 21 of the water tower is turned OFF, the reservoir pump 34 is not started. In addition, the pipe network water pipe A1 is connected to the reservoir 3 (as shown in the first figure), and the reservoir 3 controls the reservoir valve 33 to control the water source 1 according to the open and closed state of the reservoir water level switch 31. The introduction of cistern 3 means that when the cistern water level switch 31 is turned ON, the cistern valve 33 is opened and the water source 1 is introduced into cistern 3 through the pipe network water pipe A1, and when the cistern water When the position switch 31 is closed (OFF), the reservoir valve 33 is closed. In addition, to control the opening and closing of the reservoir pump 34 and the reservoir valve 33, that is, to directly control the water inlet volume of water tower 2 and reservoir 3, respectively, and when the water tower level gauge 22 and the reservoir level gauge 32 The preset maximum water level values have been reached, that is, the reservoir pump 34 and the reservoir valve 33 are closed, respectively.

As shown in the third figure, the main scheduling method of the present invention is as follows: First, within a set time, a load trend prediction chart C is made according to the relationship between the total water consumption (flow) and time of the water supply network A, And according to the relationship between the total water consumption (flow) and time of each building B, a water consumption trend prediction chart D is made, and according to the load trend prediction chart C, each water consumption trend prediction chart D, and Detect the liquid level values of each water tower level gauge 22 and each reservoir level gauge 32 at a predetermined time, and sum up the liquid level values to obtain a water storage amount B0 of each building B at the predetermined time, and then Calculate the difference between the water storage amount B0 and the corresponding time (that is, at the predetermined time) of the water consumption trend prediction chart D of the corresponding building B, and schedule the water supply urgency of all the buildings B of the water supply pipe network A according to the difference This is also the fourth figure, that is, at the predetermined time, the water storage amount B0 of each building B minus the water consumption trend prediction chart D corresponds to the total water consumption (flow) V1 at that time, and there is a difference The value E is arranged according to the difference E of each building B. The smaller the difference E, the smaller the lack. The higher the water urgency, this time it is listed as the object of priority water supply. Based on this, it can constitute a water supply optimization schedule. The water tower 2 and the reservoir 3 of the building B in the area of the water supply network A are included in the optimized water supply. Within the dispatching range, the water tower 2 and the water storage tank 3 of each building B also have a buffer function for storing water. In addition, the water storage amount B0 of each building B after the sum of the liquid level values of the water tower level gauge 22 and the reservoir level gauge 32 can be displayed by a water meter for observation or recording.

Furthermore, Thi represents a length of water supply predicted by the existing water storage amount B0 of each building B. Assuming that building B starts at time t = 0 and no longer enters water, building B must use the existing reservoir 3 and The existing water storage amount B0 of the water tower 2 meets the water demand, that is, Thi is the supporting time for supplying water to the building B.

According to the length of the water supply time Thi, and according to the water inlet volume and water inlet pressure of each reservoir 3, a graph F (also shown in the fifth figure) is obtained, and the water storage of each reservoir 3 is known. The required time is based on the existing water supply time length Thi of each building B and the time required for each water storage 3 to optimize the algorithm, and the order of the introduction of tap water by each building B is scheduled, and the algorithm is optimized The following three restrictions must be met:

(1) Total water supply of water supply network A (Q (t)) Total water inflow (D (t)) of the cisterns of all buildings B. As shown in the sixth figure, Q1, Q2, Q3, Q4, and Q5 respectively represent the water supply curve of the water supply pipe network of five buildings B, and the peaks represent the water supply status. D1, D2, D3, and D4 respectively reveal all buildings at each time point. The total amount of water in the reservoir of B, we know that D1 = Q3, and D2 = Q1 + Q3 + Q4, D3 = 0, D4 = Q1 + Q3 + Q4 + Q5.

(2) Water supply stop time of any building B (Bi) The building B's water support time (Thi). As shown in the sixth figure, this avoids the situation where no water is available in the building B.

(3) Actual water ingress time (Ts) of any building B Estimated water ingress time (Ci) for this building B. As shown in the sixth figure, this avoids a situation in which the water in the reservoir 3 overflows.

According to the above, by controlling the opening or closing of each cistern valve 33, the total sum of the variation of the total water intake (D (t)) of the cistern of all buildings B within a water supply period is the smallest; that is, ;among them,

n is the sampling point in the water supply period; D _i represents the total water inflow of the cisterns of all buildings in the i-th sampling point; D _avg represents the average of the total water inflow of the cisterns of all buildings in the water supply period.

In addition, the above algorithm can use global optimization (Regression) or artificial neural network (Artificial Neural Newton) or machine learning (Machine Learning) methods to seek to control the storage during the water supply period The best combination of opening or closing of the pool valve 33.

In addition, as shown in the seventh figure, the water supply network A can be divided into a plurality of optimized dispatch groups A2, and the optimized dispatch group A2 is used as the basic unit for independent optimized dispatch of the water supply network. Furthermore, the optimized dispatch group A2 includes at least two or more Building B, the water supply state of building B in the optimized dispatching group A2, fully accepts the dispatch management of the water supply optimized dispatching method of the water supply network A.

In addition, when the difference between the corresponding time of each water storage amount B0 and the water consumption trend prediction chart D of the corresponding building B exceeds a predetermined value, the water supply network A can determine to close the reservoir based on the location of the building B exceeding the predetermined value. Location and time of valve 33. This is in response to the emergence of a large amount of water in the water supply network A (such as fire fighting water or pipe bursting). This method can reduce or close the water intake of the reservoir 3 of some buildings B, and the water tower associated with it. 2 will also cooperate to control the relevant pumping action.

Based on the method and implementation instructions, it can be seen that the present invention mainly includes the water supply system of building B (building) in water supply pipe network A into the water supply dispatch of water source 1, and determines that water supply pipe network A provides water source 1 to enter water tower 2 or reservoir 3 At this point in time, not only can the water demand of Building B be met, but the difference between the peak and off-peak water supply network A can be greatly reduced to optimize water supply scheduling and achieve stable water pressure and reduction in water supply network A. The effectiveness of electricity bills.

To sum up, it can be seen that the present invention has eliminated the aforesaid lack of existing ones, and has achieved the advantage of more practical functions. Therefore, it has industrial applicability, novelty and progress, and meets the requirements of invention patents. However, the above are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. That is, all equal changes and modifications made in accordance with the scope of patent application of the present invention are covered by the scope of patent of the present invention.

Claims (7)

    An optimal dispatching method for a water supply pipeline network refers to a water supply pipeline network that introduces at least one water source connection into at least two buildings, each of which has at least one water tower and a reservoir. The water tower is arranged on the top of the building. The water towers each have a water tower level switch and a water tower level gauge, and the water tower supplies the water source to at least one user in the building with at least one user water pipe, and the reservoir is arranged below the building, and the water reservoir The water tanks each have a water tank level switch, a water tank level gauge, a water tank valve and a water tank pump, and the water tank and the water tower are connected and communicated by at least one building water pipe. And the reservoir pump can judge that the water source is introduced from the building water pipe to the water tower based on the state of the water tower water level switch being opened and closed; and the water supply pipe network is provided with at least one pipe network water pipe, the pipe network A water pipe is connected to each of the reservoirs, and the reservoir is controlled according to the open and closed state of the water level switch of the reservoir to further control the reservoir valve so that the water source is introduced into the reservoir; and its characteristics are : Within a set time, According to the relationship between the total water consumption of the water supply network and time, a load trend prediction chart is made, and according to the relationship between the total water consumption of each building and time, a water consumption trend prediction chart is made, and according to the load trend Forecast map, each water consumption trend forecast map, and separately detecting and summing up the liquid level values of each of the water tower level gauge and each of the reservoir level gauges and adding up a water storage amount of each building, and then calculating The difference between each of the water storage capacity and the corresponding time corresponding to the building's water consumption trend prediction map is to rank the water supply urgency of all the buildings in the water supply network according to the difference.         According to the optimized dispatching method of the water supply pipeline network described in item 1 of the scope of the patent application, in which controlling the opening and closing of the reservoir pump and the reservoir valve, that is, directly controlling the water tower and the inlet of the reservoir, respectively Water volume, and when the water tower level gauge and the reservoir level gauge have reached one of the preset maximum water level values, respectively, the reservoir pump and the reservoir valve are closed.         The method for optimizing the water supply pipeline network as described in item 2 of the scope of patent application, wherein a water supply time length of each of the buildings is predicted according to each of the water storage amounts, and then the water supply amount and water pressure of each of the storage tanks are predicted. A relationship graph is obtained, and the time required to store water in each cistern is known, and then based on the length of the water supply time available in each building, and the time required to store water in each cistern, the calculation is optimized. And the order in which the buildings introduce water.     As described in Item 3 of the scope of the patent application, the optimal dispatching method of the water supply network, wherein the optimization algorithm must meet the following three constraints: (1) the total water supply of the water supply network The total water inflow of the cistern of all the buildings; (2) the time of stopping the water supply of any of the buildings The water support time of the building; (3) the actual water inflow time of any of the buildings The estimated inflow time of the water reservoir of the building; by controlling the opening or closing of each of the water reservoir valves, to reach a water supply period, the sum of the variations of the total water intake of the water reservoir of the building is Minimal; ie ;among them, n is the sampling point in the water supply period; D _i represents the total water inflow of the cisterns of all buildings in the i-th sampling point; D _avg represents the average of the total water inflows of the cisterns of all buildings in the water supply period .     The optimal dispatching method for a water supply network as described in the fourth item of the patent application scope, wherein global optimization, statistical regression, artificial neural network, or machine learning are used. Learning) method to find the best combination of controlling the opening or closing of each reservoir valve during the water supply period.         According to the method for optimizing the water supply pipe network as described in the scope of application for patents 1, 2, 3, 4 or 5, wherein the water supply pipe network can be divided into a plurality of optimized dispatch groups, and the optimized dispatch group serves as the water supply pipe The network is the basic unit of independent optimized scheduling, and the optimized scheduling group includes at least two or more of the buildings.         According to the method for optimizing the water supply pipeline network described in item 1, 2, 3, 4, or 5 of the scope of patent application, wherein the difference between each of the water storage amount and the corresponding time corresponding to the water consumption trend prediction map of the building When exceeding a predetermined value, the water supply network can determine the location and time period for closing the reservoir valve based on the location of the building exceeding the predetermined value.