CN-121979314-A - Linkage and water supply control method and system for secondary water supply multi-stage booster pump station

CN121979314ACN 121979314 ACN121979314 ACN 121979314ACN-121979314-A

Abstract

The invention provides a linkage and water supply control method and system of a secondary water supply multi-stage booster pump station, comprising the steps of carrying out hydraulic modeling based on pump station physical data of each booster pump station in a water supply area to obtain a pump station pipe network diagram, and carrying out physical priori weighting based on pipe network water resistance characteristics of the pump station physical data to obtain an priori pipe network diagram; the method comprises the steps of calculating basic hydraulic pressure corresponding to a priori pipe network diagram, carrying out historical hydraulic residual error characteristic extraction and dynamic diffusion diagram convolution on the priori pipe network diagram to obtain residual hydraulic pressure, carrying out hydraulic balance correction by combining the basic hydraulic pressure to obtain interactive hydraulic pressure, carrying out water supply state information aggregation by combining the interactive hydraulic pressure to obtain a global water supply state, generating a pump station intelligent set according to each booster pump station, carrying out cooperative control decision, inter-stage coupling oscillation constraint and physical simulation verification on the global water supply state according to the pump station intelligent set, and obtaining a verification water supply control strategy.

Inventors

ZHOU FEI
SHEN TAO
TONG JING
WANG XIANGBING
HU HAIDONG

Assignees

浙江宁鼎环保科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260202

Claims (10)

1. The linkage and water supply control method for the secondary water supply multi-stage booster pump station is characterized by comprising the following steps: carrying out hydraulic modeling based on pump station physical data of each booster pump station in a water supply area to obtain a pump station pipe network diagram, extracting pipe network water resistance characteristics from the pump station physical data, and carrying out physical priori weighting on the pump station pipe network diagram based on the pipe network water resistance characteristics to obtain an priori pipe network diagram; Calculating basic hydraulic pressure corresponding to the prior pipe network diagram according to a hydraulic equation by combining real-time water supply flow, extracting historical hydraulic residual characteristics and convoluting a dynamic diffusion diagram according to the prior pipe network diagram to obtain residual hydraulic pressure, and carrying out hydraulic balance correction by combining the basic hydraulic pressure to obtain interactive hydraulic pressure; extracting pump station local pressure characteristics from the prior pipe network diagram by combining the interactive hydraulic pressure, and carrying out water supply state information aggregation on the pump station local pressure characteristics based on a multi-head attention mechanism to obtain a global water supply state; Generating a pump station intelligent body set according to each booster pump station, and carrying out cooperative control decision and inter-stage coupling oscillation constraint on the global water supply state according to the pump station intelligent body set to obtain a constraint water supply control strategy; And controlling water supply of each booster pump station according to the constraint water supply control strategy to obtain water supply pressure feedback, and performing feedback self-correction on the constraint water supply control strategy based on the deviation of the water supply pressure feedback and the interactive hydraulic pressure.
2. The method for linkage and water supply control of secondary water supply multi-stage booster pump stations according to claim 1, wherein hydraulic modeling is performed based on pump station physical data of each booster pump station in a water supply area to obtain a pump station pipe network diagram, comprising: generating a pump station unique identifier for each booster pump station according to pump station physical data of a water supply area, and converting each booster pump station into a pump station node according to the unique identifier; generating a graph edge for the pump station node according to the connection relation and the water flow direction of each booster pump station in the pump station physical data to obtain a pump station topological graph; And carrying out node characteristic embedding on corresponding pump station nodes in the pump station topological graph based on the pump model, rated power and frequency conversion range of each booster pump station in the pump station physical data, and carrying out side characteristic embedding on corresponding graph sides in the pump station topological graph based on the pipe section length, pipe diameter, pipe material, elevation and burial depth of each connecting water pipe in the pump station physical data, so as to obtain the pump station pipe network graph.
3. The method for linkage and water supply control of a secondary water supply multistage booster pump station according to claim 1, wherein extracting water resistance characteristics of a pipe network from physical data of the pump station, and performing physical priori weighting on the pump station pipe network diagram based on the water resistance characteristics of the pipe network to obtain a priori pipe network diagram, comprises: selecting a drawing edge in the pump station pipe network diagram one by one as a target drawing edge, taking a connecting water pipe corresponding to the target drawing edge as a target water pipe, and taking a booster pump station corresponding to the target water pipe as a target booster pump station group; calculating a pipeline resistance coefficient corresponding to the target water pipe and an on-way resistance coefficient according to the pump station physical data; Extracting a water pump model group corresponding to the target booster pump station group from the pump station physical data, inquiring a corresponding valve type group and a valve parameter group according to the water pump model group, and calculating a local resistance coefficient based on the valve type group and the valve parameter group; And taking the sum of the on-way resistance coefficient and the local resistance coefficient as a pipe network water resistance coefficient, generating pipe network water resistance characteristics based on pipe network water resistance coefficients of all target graph sides in the pump station pipe network graph, carrying out weight conversion on the pipe network water resistance characteristics to obtain physical prior weights, and carrying out prior weighting on the pump station pipe network graph according to the physical prior weights to obtain a prior pipe network graph.
4. The linkage and water supply control method of a secondary water supply multi-stage booster pump station according to claim 1, wherein the calculating the basic hydraulic pressure corresponding to the prior pipe network diagram according to the hydraulic equation by combining the real-time water supply flow rate comprises the following steps: extracting node characteristics corresponding to each pump station node from the prior pipe network diagram, acquiring real-time water pump frequency corresponding to the real-time water supply flow according to the water pump model in the node characteristics, and carrying out lift scaling on the real-time water pump frequency according to rated power and a frequency conversion range in the node characteristics to obtain real-time lift pressure; extracting edge characteristics corresponding to edges of each graph from the prior pipe network graph, calculating real-time water supply flow rate according to pipe diameters in the edge characteristics and the real-time water supply flow meter, and calculating gravity hydrostatic pressure according to elevations and burial depths in the edge characteristics; Extracting pipe network water resistance coefficients corresponding to physical prior weights in the prior pipe network graph, and calculating dynamic pressure drops corresponding to all graph edges in the prior pipe network graph based on the real-time water supply flow rate and the pipe network water resistance coefficients; And calculating the basic hydraulic pressure according to the real-time lift pressure, the gravity hydrostatic pressure and the dynamic pressure drop.
5. The method for linkage and water supply control of a secondary water supply multi-stage booster pump station according to claim 4, wherein the steps of extracting historical hydraulic residual characteristics and convolving a dynamic diffusion map according to the prior pipe network map to obtain residual item hydraulic pressure comprise the following steps: Acquiring a historical water supply flow, a historical water pump frequency and a historical actual measured water pressure corresponding to the prior pipe network diagram, and calculating a historical base water pressure based on the historical water supply flow and the historical water pump frequency; calculating a historical hydraulic residual error according to the historical basic hydraulic pressure and the historical actual measured hydraulic pressure, and carrying out node alignment and feature coding on the historical hydraulic residual error according to time sequence to obtain a historical hydraulic residual error feature; mapping the historical hydraulic residual characteristics into the prior pipe network diagram to obtain a pipe network hydraulic residual time-space diagram, and performing time sequence modeling on the pipe network hydraulic residual time-space diagram to obtain historical hydraulic time sequence characteristics; And dynamically diffusing the physical priori weights in the pipe network hydraulic residual space-time diagram based on an attention mechanism to obtain coupling priori weights, and carrying out diagram convolution aggregation and hydraulic mapping on the historical hydraulic residual characteristics in the pipe network hydraulic residual space-time diagram based on the coupling priori weights to obtain residual item hydraulic pressure.
6. The method for linkage and water supply control of a secondary water supply multistage booster pump station according to claim 5, wherein said combining said base hydraulic pressure to perform hydraulic balance correction to obtain an interactive hydraulic pressure comprises: Confidence degree fusion is carried out on the residual hydraulic pressure and the basic hydraulic pressure, so that superimposed hydraulic pressure is obtained; calculating the superposition hydraulic deviation of the superposition hydraulic pressure based on a hydraulic balance formula; and carrying out projection correction on the superimposed hydraulic pressure based on the superimposed hydraulic deviation to obtain the interactive hydraulic pressure.
7. The method for linkage and water supply control of a secondary water supply multi-stage booster pump station according to claim 1, wherein extracting pump station local pressure characteristics from the prior pipe network diagram in combination with the interactive hydraulic pressure comprises: selecting pump station nodes in the prior pipe network graph one by one as target nodes, and forming a target pipe network subgraph according to the target nodes and corresponding neighbor nodes; Extracting local node pressure characteristics and local chart edge pressure characteristics corresponding to the target pipe network subgraph from the interactive hydraulic pressure; and carrying out heterogeneous fusion on the local node pressure characteristics and the local graph edge pressure characteristics to obtain the local pressure characteristics of the pump station.
8. The method for linkage and water supply control of a secondary water supply multi-stage booster pump station according to claim 1, wherein the step of performing water supply state information aggregation on the local pressure characteristics of the pump station based on a multi-head attention mechanism to obtain a global water supply state comprises the steps of: Performing linear projection on the pump station local pressure characteristics to obtain a query vector, a key vector and a value vector, and performing multi-head parallel association scoring on the query vector and the key vector to obtain a multi-head attention scoring matrix set; Performing mask correction on the multi-head attention scoring matrix set based on the physical prior weight of the prior pipe network diagram to obtain a corrected attention scoring matrix set; performing dynamic feature aggregation on the value vector based on the corrected attention scoring matrix set to obtain a global pressure feature set; and performing feature splicing, feature dimension reduction and nonlinear activation on the global pressure feature set to obtain a global water supply state.
9. The method for controlling linkage and water supply of a secondary water supply multi-stage booster pump station according to claim 4, wherein the step of performing cooperative control decision and inter-stage coupling oscillation constraint on the global water supply state according to the pump station intelligent agent set to obtain a constrained water supply control strategy comprises the steps of: Performing node alignment and vector splicing on the acquired real-time water pump frequency and the global water supply state to obtain real-time water supply characteristics, and distributing the real-time water supply characteristics to corresponding pump station intelligent agents in the pump station intelligent agent set; Carrying out distributed decision by utilizing each pump station intelligent agent based on the corresponding real-time water supply characteristic to obtain a variable frequency adjustment action set; calculating instantaneous pressure fluctuation generated by the variable frequency adjustment action set among the booster pump stations based on the prior pipe network diagram, mapping the instantaneous pressure fluctuation into an interstage coupling oscillation risk, and carrying out constraint correction on the variable frequency adjustment action set according to the interstage coupling oscillation risk to obtain a correction adjustment action set; And carrying out cooperative utility evaluation on the correction and adjustment action sets by utilizing each pump station intelligent agent, and generating a constraint water supply control strategy according to the correction and adjustment action sets after evaluation.
10. The utility model provides a multistage booster pump station linkage of secondary water supply and water supply control system which characterized in that, the system includes prior modeling module, pressure analysis module, information aggregation module, cooperation decision-making module and tactics feedback module, wherein: the prior modeling module is used for carrying out hydraulic modeling on the basis of pump station physical data of each booster pump station in a water supply area to obtain a pump station pipe network diagram, extracting pipe network water resistance characteristics from the pump station physical data, and carrying out physical prior weighting on the pump station pipe network diagram on the basis of the pipe network water resistance characteristics to obtain a prior pipe network diagram; The pressure analysis module is used for calculating basic hydraulic pressure corresponding to the prior pipe network diagram according to a hydraulic equation by combining real-time water supply flow, carrying out historical hydraulic residual characteristic extraction and dynamic diffusion diagram convolution according to the prior pipe network diagram to obtain residual item hydraulic pressure, and carrying out hydraulic balance correction by combining the basic hydraulic pressure to obtain interactive hydraulic pressure; The information aggregation module is used for extracting pump station local pressure characteristics from the prior pipe network diagram by combining the interactive hydraulic pressure, and carrying out water supply state information aggregation on the pump station local pressure characteristics based on a multi-head attention mechanism to obtain a global water supply state; the collaborative decision-making module generates a pump station intelligent agent set according to each booster pump station, and performs collaborative control decision-making and inter-stage coupling oscillation constraint on the global water supply state according to the pump station intelligent agent set to obtain a constraint water supply control strategy; And the strategy feedback module is used for controlling water supply to each booster pump station according to the constraint water supply control strategy to obtain water supply pressure feedback, and carrying out feedback self-correction on the constraint water supply control strategy based on the deviation of the water supply pressure feedback and the interactive hydraulic pressure.

Description

Linkage and water supply control method and system for secondary water supply multi-stage booster pump station Technical Field The invention relates to the technical field of control systems of the Internet of things, in particular to a linkage and water supply control method and system of a secondary water supply multi-stage booster pump station. Background In town water systems, secondary water supply multi-stage booster pump stations are key infrastructure for realizing stable water supply in high-rise buildings and remote areas. The system is generally formed by a plurality of booster pump stations which are sequentially arranged along a water supply path through a pipe network, has the characteristics of complex topological structure, strong hydraulic coupling, obvious dynamic time variation and the like, and has extremely high requirements on cooperative control precision, system stability and energy efficiency optimization among pump stations. However, the existing control method of the secondary water supply multi-stage booster pump station still has obvious technical bottlenecks when the complex working conditions are dealt with. Firstly, most control strategies rely on simple proportional-integral-differential regulation or pump set rotation with fixed threshold values, and lack of deep modeling capability on the hydraulic coupling relation of a pipeline network, so that pressure oscillation (namely 'water robbing' phenomenon) is easy to generate between an upstream pump station and a downstream pump station, and real smooth linkage is difficult to realize. Secondly, the traditional method generally breaks apart a physical mechanism model from a data driving strategy, or excessively depends on a hydraulic equation in an ideal state, ignores dynamic factors such as pipe network aging, local resistance change and the like, or completely depends on the data driving model, so that a control decision may deviate from a physical rule, and potential safety hazards exist. In addition, when the existing system faces the scenes of abrupt change of water consumption mode, time-varying pipe network parameters and the like, the self-adaptive correction capability is insufficient, the control strategy is often solidified, on-line optimization cannot be performed according to real-time feedback, and long-term operation efficiency is reduced. Disclosure of Invention (One) solving the technical problems Aiming at the defects of the prior art, the invention provides a linkage and water supply control method and system for a secondary water supply multi-stage booster pump station, which have the advantages of physical information deep fusion, dynamic coupling oscillation suppression, intelligent collaborative decision and online self-correction, and solve the problems of poor control cooperativity, insufficient stability and low operation energy efficiency caused by lack of accurate hydraulic relation modeling, effective interstage oscillation suppression mechanism and self-adaptive optimization capability in a water supply scene with complex pipe network topology, strong hydraulic coupling and dynamic change of working conditions. (II) technical scheme In order to achieve the above purpose, the present invention provides the following technical solutions: The invention provides a linkage and water supply control method of a secondary water supply multi-stage booster pump station, which comprises the following steps: carrying out hydraulic modeling based on pump station physical data of each booster pump station in a water supply area to obtain a pump station pipe network diagram, extracting pipe network water resistance characteristics from the pump station physical data, and carrying out physical priori weighting on the pump station pipe network diagram based on the pipe network water resistance characteristics to obtain an priori pipe network diagram; Calculating basic hydraulic pressure corresponding to the prior pipe network diagram according to a hydraulic equation by combining real-time water supply flow, extracting historical hydraulic residual characteristics and convoluting a dynamic diffusion diagram according to the prior pipe network diagram to obtain residual hydraulic pressure, and carrying out hydraulic balance correction by combining the basic hydraulic pressure to obtain interactive hydraulic pressure; extracting pump station local pressure characteristics from the prior pipe network diagram by combining the interactive hydraulic pressure, and carrying out water supply state information aggregation on the pump station local pressure characteristics based on a multi-head attention mechanism to obtain a global water supply state; Generating a pump station intelligent body set according to each booster pump station, and carrying out cooperative control decision and inter-stage coupling oscillation constraint on the global water supply state according to the pump station intelligent body set to obtain