CN113279947B - Intelligent water pump energy-saving control system - Google Patents
Intelligent water pump energy-saving control system Download PDFInfo
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- CN113279947B CN113279947B CN202110629636.2A CN202110629636A CN113279947B CN 113279947 B CN113279947 B CN 113279947B CN 202110629636 A CN202110629636 A CN 202110629636A CN 113279947 B CN113279947 B CN 113279947B
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- water pump
- power supply
- terminal
- intelligent
- electric energy
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- 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
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- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/50—Reduction of harmonics
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to an intelligent water pump energy-saving control system, which is used for solving the defect that the voltage and the frequency cannot be adjusted simultaneously so as not to meet the practical requirement in the prior art. The intelligent water pump energy-saving control system comprises an intelligent controller, a power supply control terminal, a water pump control execution terminal and an electric energy balance bus; the power supply control terminal is connected between a power supply network and the electric energy balance bus; the water pump control execution terminal is connected between the electric energy balance bus and the water pump motor; the intelligent controller is connected with both the power supply control terminal and the water pump control execution terminal; the water pump control execution terminal is used for respectively adjusting three-phase voltage, three-phase current and frequency. The invention is suitable for the intelligent control system of the water pump.
Description
Technical Field
The invention relates to the field of water pump control systems, in particular to an intelligent water pump energy-saving control system.
Background
The frequency converter in the prior art adopts the mode that voltage and frequency are adjusted simultaneously, and pipeline pressure, flow, lift in the present water pump control field have corresponding control relation with voltage and frequency respectively, if adopt the mode that adjusts simultaneously among the prior art can not satisfy the reality needs, can not make entire system reach best running state.
Disclosure of Invention
An object of the present invention is to solve the problem of the prior art that the voltage and frequency cannot be adjusted simultaneously, so that the real requirements cannot be met.
According to a first aspect of the invention, an intelligent water pump energy-saving control system is provided, which comprises: the system comprises an intelligent controller, a power supply control terminal, a water pump control execution terminal and an electric energy balance bus; the power supply control terminal is connected between a power supply network and the electric energy balance bus; the water pump control execution terminal is connected between the electric energy balance bus and the water pump motor; the intelligent controller is connected with both the power supply control terminal and the water pump control execution terminal; the water pump control execution terminal is used for respectively adjusting three-phase voltage, three-phase current and frequency.
Preferably, the water pump control execution terminal realizes the respective regulation of three-phase voltage, three-phase current and frequency through a frequency modulator, an electronic voltage regulator and a current controller which are connected in series.
Preferably, the power supply control terminal comprises a regulating transformer, a rectification regulator and an abatement controller, wherein: the first winding of the voltage regulating transformer forms a triangular connection to be connected into a power supply network; the second winding is connected with the governance controller and used for generating balance current and harmonic suppression current and inducing the balance current and the harmonic suppression current to the first winding; the electric energy induced by the third winding is supplied to the electric energy balance bus through the rectification regulator.
Preferably, the rectifier regulator can regulate three phases according to the load power consumption condition and the power grid condition, so that the three phases obtain different electric energy to achieve the purpose of balancing the system.
Preferably, the intelligent controller is used for acquiring water pump parameters, a water pump state, power grid parameters, a pipeline state and a valve state, and adjusting the operation model according to changes of the power supply system and the water supply system.
Preferably, the intelligent controller is further used for calculating the electric energy required by the operation of the water pump and outputting the electric energy to the power supply control terminal.
Preferably, the intelligent controller is further configured to send a control instruction to the water pump control execution terminal, and the water pump control execution terminal adjusts the three-phase voltage, the three-phase current, and the frequency according to the control instruction.
Preferably, the system of the invention further comprises a water source temperature control terminal connected with the water pump motor; the intelligent controller is also used for carrying out temperature replacement adjustment on inlet and outlet water through the temperature control terminal.
The invention has the beneficial effects that: the three-phase voltage, the three-phase current and the frequency can be respectively adjusted, the requirements of various scenes can be met, the control flexibility can be greatly improved, and the water supply pressure, the water supply flow and the water supply lift can be more accurately controlled; the electric energy balance adjustment can be carried out according to the load electricity utilization condition and the power grid condition, and the reactive power and harmonic waves in the operation of the water pump and the power supply network can be absorbed; the method can acquire various parameters of the water power supply system and the water supply system, and carry out calculation and adjustment in real time, so that the system achieves the optimal and most energy-saving state, and the aims of saving energy, reducing water pump faults and improving the system stability are fulfilled.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which 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.
FIG. 1 is a system block diagram of one embodiment of the present invention;
FIG. 2 is a diagram of a water pump control execution terminal according to an embodiment of the present invention;
fig. 3 is a structural diagram of a power supply control terminal according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The invention comprises an intelligent water pump energy-saving control system, as shown in figure 1, comprising: the system comprises an intelligent controller ZC, a power supply control terminal PZ, a water pump control execution terminal MZ and an electric energy balance bus; the power supply control terminal PZ is connected between a power supply network and the electric energy balance bus; the water pump control execution terminal MZ is connected between the electric energy balance bus and the water pump motor; the intelligent controller ZC is connected with both the power supply control terminal PZ and the water pump control execution terminal MZ; the water pump control execution terminal MZ is used for adjusting three-phase voltage, three-phase current and frequency respectively. The power balance bus is a dc bus that connects a plurality of terminals in parallel and is used to balance three-phase power distribution in the present invention.
FIG. 2 illustrates a block diagram of one embodiment of a water pump control execution terminal MZ. The water pump control execution terminal MZ realizes the regulation respectively of three-phase voltage, three-phase current and frequency through frequency modulator, electron voltage regulator and the current controller of series connection.
Fig. 3 shows a block diagram of one embodiment of the power supply control terminal PZ. The power supply control terminal PZ comprises a regulating transformer, a rectification regulator and a governing controller, wherein: a first winding S1 of the voltage regulating transformer forms a triangular connection to be connected into a power supply network; the second winding S2 is connected with the governing controller and used for generating balance current and harmonic suppression current and inducting the balance current and the harmonic suppression current to the first winding S1; the power induced in the third winding S3 is supplied to the power balance bus through the rectifier. The rectification regulator can regulate three phases according to the load electricity utilization condition and the power grid condition, so that the three phases obtain different electric energy to achieve the aim of balancing the system.
The intelligent controller ZC is used for acquiring water pump parameters, a water pump state, power grid parameters, a pipeline state and a valve state, and adjusting the operation model according to the change of a power supply system and a water supply system. And the intelligent controller ZC is also used for calculating the electric energy required by the operation of the water pump and outputting the electric energy to the power supply control terminal. The intelligent controller ZC is also used for sending a control instruction to the water pump control execution terminal, and the water pump control execution terminal respectively adjusts the three-phase voltage, the three-phase current and the frequency according to the control instruction. The system can also comprise a water source temperature control terminal; and the intelligent controller ZC is also used for performing temperature replacement and regulation on inlet and outlet water through a temperature control terminal.
Compared with other systems in the prior art, the most central difference of the invention is that: 1. the circuit structure of the water pump execution terminal MZ is different from that of the prior art; particularly, the structure of the invention can respectively adjust the three-phase voltage, the three-phase current and the frequency, can adapt to various scene requirements, can greatly improve the control flexibility and can more accurately control the water supply pressure, the flow and the lift; 2. the circuit structure of the power supply control terminal PZ is different from the prior art; specifically, the power supply control terminal can perform electric energy balance adjustment according to the load power utilization condition and the power grid condition, and can absorb reactive power and harmonic waves in the operation of a water pump and the power supply network; 3. and a power balance bus is added, so that further power balance is realized. 4. Various parameters of a water power supply system and a water supply system are obtained through an intelligent controller ZC, and calculation and adjustment are carried out in real time so that the system can reach the optimal state.
< example >
The system structure of the present embodiment is shown in fig. 1 to 3. The system of this embodiment can gather each water pump system operation data to obtain through the quick accurate operation of intelligent control ware ZC and control output and carry out the overclocking control regulation to water pump work to each water pump control execution terminal MZ. The water pump control execution terminal MZ is composed of a three-phase independent frequency modulator, an electronic voltage regulator and a current controller, three-phase voltage, current and frequency can be controlled and adjusted respectively through the arrangement, the control is more accurate, the electric energy balance bus is subjected to voltage regulation processing through the electronic voltage regulator after being converted into corresponding frequency through the frequency modulator respectively and then is output to the water pump, meanwhile, the internal leakage reactance of a conversion transformer internally connected with the electronic voltage regulator and a distributed capacitor form a filter circuit, the filter circuit can absorb frequency modulation to generate harmonic waves, the harmonic-free output of the water pump is guaranteed, and the operation of the water pump is protected. The voltage and the frequency of the frequency conversion device are adjusted simultaneously, the current, the voltage and the frequency are controlled respectively through operation according to water supply data such as water supply pressure, flow and lift and electrical data such as water pump voltage, frequency, current and power factor, the voltage, the frequency and the frequency are controlled respectively, the voltage, the over-frequency and the current are adjusted, so that the water pump can operate in the optimal and most energy-saving working state while meeting the water supply requirement, and the purposes of saving energy, reducing water pump faults and improving system stability are achieved.
The intelligent controller ZC can monitor the running state of each water pump and the related parameters of the power supply network, and can output the control obtained by operation to the power supply control terminal PZ. The intelligent controller ZC is used for carrying out comprehensive power quality control on a connected power supply network while ensuring that power required by operation of a water pump is obtained from a power grid, a power supply control terminal PZ is composed of a regulating transformer, a control controller and a rectification regulator, and a first winding of the regulating transformer forms a triangular connection to be connected into the power supply network; the second winding is connected with the governance controller and used for generating balance current and harmonic suppression current and inducing the balance current and the harmonic suppression current to the first winding; the electric energy induced by the third winding is supplied to the electric energy balance bus through the rectification regulator. The rectification regulator can regulate three phases according to the load electricity utilization condition and the power grid condition, so that the three phases obtain different electric energy to achieve the aim of balancing the system. The electric quantity required by the water pumps can be respectively controlled from three phases through the power supply control terminal PZ according to the condition of a power grid and then integrated, the water pumps are distributed to the water pumps through the water pump control execution terminals MZ, and meanwhile reactive power and harmonic waves in the operation of the water pumps and the power supply network are absorbed.
The intelligent controller ZC can monitor the temperature of each part of the system, control the temperature output to the water source temperature control terminal SZ, and replace the heat to heat the equipment in winter and replace the cold to cool the equipment in summer by replacing and adjusting the temperature of the inlet and outlet water; the temperature control of the existing heating system and air conditioner is distinguished, and the temperature energy in the supply water is replaced, so that the equipment is energy-saving and stable while the reliable temperature safe operation is ensured. The intelligent controller ZC can also automatically adjust a system operation model according to the changes of power supply and water supply systems such as water pump parameters and states, power grid parameters, pipeline and valve states and the like after the equipment runs for a long time, is different from the existing automatic control system which is controlled according to a curing embedding program and a customized control flow all the time, and can improve the operation model in time when the system changes so that the control output is more adaptive to the real-time system condition and the control is more accurate.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (7)
1. The utility model provides an intelligence water pump energy-saving control system which characterized in that includes:
the system comprises an intelligent controller, a power supply control terminal, a water pump control execution terminal and an electric energy balance bus; the power supply control terminal is connected between a power supply network and the electric energy balance bus; the water pump control execution terminal is connected between the electric energy balance bus and the water pump motor; the intelligent controller is connected with both the power supply control terminal and the water pump control execution terminal; the water pump control execution terminal is used for respectively adjusting three-phase voltage, three-phase current and frequency; the water pump control execution terminal realizes the respective regulation of three-phase voltage, three-phase current and frequency through a frequency modulator, an electronic voltage regulator and a current controller which are connected in series.
2. The intelligent water pump energy-saving control system of claim 1, wherein the power supply control terminal comprises a regulating transformer, a rectification regulator and a governance controller, wherein:
the first winding of the voltage regulating transformer forms a triangular connection to be connected into a power supply network; the second winding is connected with the governance controller and used for generating balance current and harmonic suppression current and inducing the balance current and the harmonic suppression current to the first winding; the electric energy induced by the third winding is supplied to the electric energy balance bus through the rectification regulator.
3. The intelligent water pump energy-saving control system according to claim 2, wherein the rectification regulator can regulate three phases according to the load power consumption condition and the power grid condition, so that the three phases obtain different electric energy to achieve the purpose of balancing the system.
4. The intelligent water pump energy-saving control system according to claim 1, wherein the intelligent controller is configured to obtain water pump parameters, a water pump state, power grid parameters, a pipeline state, and a valve state, and adjust the operation model according to changes of the power supply system and the water supply system.
5. The intelligent water pump energy-saving control system according to claim 4, wherein the intelligent controller is further configured to calculate electric energy required for operation of the water pump and output the electric energy to the power supply control terminal.
6. The intelligent water pump energy-saving control system according to claim 5, wherein the intelligent controller is further configured to send a control command to the water pump control execution terminal, and the water pump control execution terminal adjusts the three-phase voltage, the three-phase current, and the frequency according to the control command.
7. The intelligent water pump energy-saving control system according to claim 1, further comprising a water source temperature control terminal connected with the water pump motor; the intelligent controller is also used for carrying out temperature replacement adjustment on inlet and outlet water through the temperature control terminal.
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| CN202110629636.2A CN113279947B (en) | 2021-06-07 | 2021-06-07 | Intelligent water pump energy-saving control system |
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| CN202110629636.2A CN113279947B (en) | 2021-06-07 | 2021-06-07 | Intelligent water pump energy-saving control system |
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| CN113279947B true CN113279947B (en) | 2021-10-26 |
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| CN101645607A (en) * | 2009-09-14 | 2010-02-10 | 华北电力大学（保定） | Quick ideal condition quasi-synchronization paralleling method of hydro-generator |
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