CN115954870A - Photovoltaic and commercial power linkage control method, device, equipment and storage medium - Google Patents
Photovoltaic and commercial power linkage control method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention relates to the field of photovoltaic and commercial power cooperative power supply, and discloses a photovoltaic and commercial power linkage control method, device, equipment and storage medium. The method comprises the following steps: determining corresponding photovoltaic power supply or mains power supply based on selection operation of a user; if the power supply mode is photovoltaic power supply, acquiring the output power of an output circuit of the inverter by using a data acquisition device; comparing the output power with the working parameters of the frequency conversion unit to obtain a comparison result, determining the specific working parameters of the frequency conversion unit according to the comparison result, and adjusting the operating frequency of the frequency conversion unit; and detecting the real-time heating temperature of the frequency conversion unit, and controlling the frequency conversion unit to provide working energy for the terminal equipment connected with the frequency conversion unit when the real-time heating temperature meets a preset target temperature value. According to the photovoltaic power supply system, the photovoltaic system and the frequency conversion unit are combined to guide work when photovoltaic power is supplied, so that the photovoltaic power supply can exert the maximum utilization rate, and the running frequency of the frequency conversion unit is determined according to the electricity price when the commercial power is supplied, so that unreasonable consumption is reduced.
Description
Technical Field
The invention relates to the field of photovoltaic and commercial power cooperative power supply, in particular to a photovoltaic and commercial power linkage control method, device, equipment and storage medium.
Background
In the traditional photovoltaic system power supply, the electric equipment uses either a photovoltaic power supply or a municipal power supply, the actual generated power of photovoltaic is not considered, the frequency conversion electric equipment is in a large trend, the photovoltaic system and the frequency conversion equipment are not combined to guide work in the photovoltaic power supply, the photovoltaic power supply does not exert the maximum utilization rate, and how to save more energy and money under the condition of not influencing the comfort degree of a user is not considered in the municipal power supply.
Disclosure of Invention
The invention mainly aims to solve the problems that the electric energy generated by a photovoltaic system is not utilized to the maximum extent and unreasonable consumption exists in mains supply.
The invention provides a photovoltaic and commercial power linkage control method in a first aspect, which comprises the following steps: responding to selection operation of a user, and determining a corresponding power supply mode based on the selection operation, wherein the power supply mode comprises photovoltaic power supply and mains power supply; if the power supply mode is photovoltaic power supply, acquiring the output power of an output circuit of the inverter by using a data acquisition device; comparing the output power with working parameters of a frequency conversion unit to obtain a comparison result, wherein the frequency conversion unit is provided with at least two working parameters; determining specific working parameters of the frequency converter set according to the comparison result, and adjusting the operating frequency of the frequency converter set based on the specific working parameters; and detecting the real-time heating temperature of the frequency conversion unit, and controlling the frequency conversion unit to provide working energy for the terminal equipment connected with the frequency conversion unit when the real-time heating temperature meets a preset target temperature value.
Optionally, in a first implementation manner of the first aspect of the present invention, the acquiring, by a data acquisition device, output power of an inverter output circuit includes: acquiring output parameters of the inverter output circuit within a certain continuous time in real time based on the data acquisition device, and calculating average parameters within the certain continuous time; and calculating the output power of the inverter output circuit by using a power calculation formula based on the average parameter and the impedance of the data acquisition device.
Optionally, in a second implementation manner of the first aspect of the present invention, the working parameters include a first working mode and at least one second working mode, where the first working mode is that the frequency converter set stops operating, and the second working mode is that the frequency converter set operates according to a certain proportion of working frequency; comparing the output power with the working parameters of the frequency conversion unit to obtain a comparison result, wherein the comparison result comprises the following steps: determining a first rated power of the frequency converter set based on the first working mode; determining at least one second rated power of the frequency converter set based on at least one second working mode, wherein the first rated power is smaller than the second rated power; and comparing the output power with the first rated power and at least one second rated power respectively to obtain a comparison result.
Optionally, in a third implementation manner of the first aspect of the present invention, if at least one second operating mode is one, the determining a specific operating parameter of the frequency converter unit according to the comparison result, and adjusting the operating frequency of the frequency converter unit based on the specific operating parameter includes: if the comparison result shows that the output power is not greater than the first rated power, determining that the frequency converter set works in the first working mode, adjusting the frequency converter set to run at a first running frequency based on working parameters of the first working mode, and stopping a heat pump in the frequency converter set; if the comparison result shows that the output power is greater than the first rated power, determining that the frequency converter set works in the second working mode, adjusting the frequency converter set to run at a second running frequency based on working parameters of the second working mode, and running a heat pump in the frequency converter set; and if the comparison result shows that the output power is greater than the second rated power, determining that the specific working parameters of the frequency converter unit are the second working mode, and adjusting the running frequency of the frequency converter unit to be the maximum running frequency of the frequency converter unit.
Optionally, in a fourth implementation manner of the first aspect of the present invention, if at least one second operating mode is more than two, the determining a specific operating parameter of the frequency converter unit according to the comparison result, and adjusting the operating frequency of the frequency converter unit based on the specific operating parameter include: if the comparison result shows that the output power is not greater than the first rated power, determining that the frequency converter set works in the first working mode, adjusting the frequency converter set to run at a first running frequency based on working parameters of the first working mode, and stopping a heat pump in the frequency converter set; if the comparison result is that the output power is larger than the first rated power and smaller than the second rated power, determining that the frequency converter unit works in the second working mode, adjusting the frequency converter unit to run at a third running frequency based on working parameters of the second working mode, and running a heat pump in the frequency converter unit; and if the comparison result shows that the output power is not less than the second rated power, determining that the frequency converter set works in the second working mode, adjusting the frequency converter set to run at a fourth running frequency based on the working parameters of the second working mode, and running a heat pump in the frequency converter set.
Optionally, in a fifth implementation manner of the first aspect of the present invention, the detecting a real-time heating temperature of the inverter unit, and controlling the inverter unit to provide working energy to a terminal device connected to the inverter unit when the real-time heating temperature meets a preset target temperature value includes: acquiring the real-time heating temperature of the frequency conversion unit, and judging whether the temperature meets a preset target temperature value or not; if the preset target temperature value is met, calculating a maximum heat energy supply value of the inverter output circuit at the current moment based on the real-time heating temperature and the energy loss during energy supply; acquiring the required energy of each end device, and determining target equipment in at least one end device based on the required energy of each end device and the heat energy supply value; and controlling the frequency converter set to provide working energy for the target equipment.
Optionally, in a sixth implementation manner of the first aspect of the present invention, the photovoltaic and utility power linkage control method further includes: if the power supply mode is mains power supply or the frequency converter set works in a first working mode, acquiring current time information of the frequency converter set; matching the time information with a preset commercial power unit price schedule, and determining the electricity price corresponding to the time information; and determining the actual operating frequency of the frequency converter set based on the electricity price, controlling the frequency converter set to operate according to the actual operating frequency, and supplying energy to the terminal equipment connected with the frequency converter set.
Optionally, in a seventh implementation manner of the first aspect of the present invention, the determining the actual operating frequency of the frequency converter set based on the electricity price includes: determining an electricity price grade corresponding to the electricity price; and determining the actual operating frequency of the frequency converter set according to the corresponding relation between the preset electricity price grade and the target temperature value and the operating frequency of the frequency converter set.
The invention provides a photovoltaic and commercial power linkage control device in a second aspect, which comprises: the response module is used for responding to selection operation of a user and determining a corresponding power supply mode based on the selection operation, wherein the power supply mode comprises photovoltaic power supply and mains supply; the acquisition module is used for acquiring the output power of the output circuit of the inverter by using the data acquisition device if the power supply mode is photovoltaic power supply; the comparison module is used for comparing the output power with working parameters of a frequency conversion unit to obtain a comparison result, wherein the frequency conversion unit is provided with at least two working parameters; the adjusting module is used for determining specific working parameters of the frequency converter set according to the comparison result and adjusting the operating frequency of the frequency converter set based on the specific working parameters; the first control module is used for detecting the real-time heating temperature of the frequency converter unit and controlling the frequency converter unit to provide working energy for the terminal equipment connected with the frequency converter unit when the real-time heating temperature meets a preset target temperature value.
Optionally, in a first implementation manner of the second aspect of the present invention, the acquisition module includes: the acquisition unit is used for acquiring the output parameters of the inverter output circuit within a certain continuous time in real time based on the data acquisition device and calculating the average parameters within the certain continuous time; and the calculating unit is used for calculating the output power of the inverter output circuit by using a power calculation formula based on the average parameter and the impedance of the data acquisition device.
Optionally, in a second implementation manner of the second aspect of the present invention, the comparing module includes: the first determining unit is used for determining a first rated power of the frequency converter set based on the first working mode; a second determining unit, configured to determine at least one second rated power of the frequency converter set based on at least one second operating mode, where the first rated power is smaller than the second rated power; and the comparison unit is used for comparing the output power with the first rated power and at least one second rated power respectively to obtain a comparison result.
Optionally, in a third implementation manner of the second aspect of the present invention, the adjusting module includes: a first adjusting unit, configured to determine that the inverter unit operates in the first operating mode if the comparison result indicates that the output power is not greater than the first rated power, adjust the inverter unit to operate at a first operating frequency based on operating parameters of the first operating mode, and stop a heat pump in the inverter unit; a second adjusting unit, configured to determine that the frequency converter unit operates in the second operating mode if the comparison result indicates that the output power is greater than the first rated power, adjust the frequency converter unit to operate at a second operating frequency based on operating parameters of the second operating mode, and operate a heat pump in the frequency converter unit; and a third adjusting unit, configured to determine that a specific operating parameter of the frequency converter unit is the second operating mode if the comparison result indicates that the output power is greater than the second rated power, and adjust an operating frequency of the frequency converter unit to a maximum operating frequency of the frequency converter unit.
Optionally, in a fourth implementation manner of the second aspect of the present invention, the adjusting module further includes: a fourth adjusting unit, configured to determine that the inverter unit operates in the first operating mode if the comparison result indicates that the output power is not greater than the first rated power, adjust the inverter unit to operate at the first operating frequency based on operating parameters of the first operating mode, and stop a heat pump in the inverter unit; a fifth adjusting unit, configured to determine that the inverter unit determines that the inverter unit operates in the second operating mode if the comparison result indicates that the output power is greater than the first rated power and smaller than the second rated power, adjust the inverter unit to operate at a third operating frequency based on operating parameters of the second operating mode, and operate a heat pump in the inverter unit; and a sixth adjusting unit, configured to determine that the frequency converter unit operates in the second operating mode if the comparison result indicates that the output power is not less than the second rated power, adjust the frequency converter unit to operate at a fourth operating frequency based on operating parameters of the second operating mode, and operate a heat pump in the frequency converter unit.
Optionally, in a fifth implementation manner of the second aspect of the present invention, the first control module includes: the judging unit is used for acquiring the real-time heating temperature of the frequency conversion unit and judging whether the temperature meets a preset target temperature value or not; the calculating unit is used for calculating the maximum heat energy supply value of the inverter output circuit at the current moment based on the real-time heating temperature and the energy loss during energy supply if the preset target temperature value is met; a third determining unit, configured to obtain required energy of each end device, and determine a target device in at least one end device based on the required energy of each end device and the thermal energy provision value; and the control unit is used for controlling the frequency converter set to provide working energy for the target equipment.
Optionally, in a sixth implementation manner of the second aspect of the present invention, the photovoltaic and utility power linkage control device further includes: the acquisition module is used for acquiring the current time information of the frequency converter unit if the power supply mode is commercial power supply or the frequency converter unit works in a first working mode; the determining module is used for matching the time information with a preset commercial power unit price schedule and determining the electricity price corresponding to the time information; and the second control module is used for determining the actual operating frequency of the frequency converter set based on the electricity price, controlling the frequency converter set to operate according to the actual operating frequency and supplying energy to the terminal equipment connected with the frequency converter set.
Optionally, in a seventh implementation manner of the second aspect of the present invention, the second control module includes: a fourth determining unit, configured to determine an electricity price level corresponding to the electricity price; and the fifth determining unit is used for determining the actual operating frequency of the frequency converter unit according to the corresponding relation between the preset electricity price grade and the target temperature value and the operating frequency of the frequency converter unit.
A third aspect of the present invention provides an electronic device, comprising: a memory having instructions stored therein and at least one processor, the memory and the at least one processor interconnected by a line; the at least one processor calls the instructions in the memory to enable the electronic equipment to execute the photovoltaic and commercial power linkage control method.
A fourth aspect of the present invention provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to execute the above-mentioned photovoltaic and utility power linkage control method.
In the technical scheme of the invention, photovoltaic power supply or commercial power supply is determined based on the selection operation of a user, if the photovoltaic power supply is adopted, the output power of an output circuit of an inverter is collected and compared with the working parameters of a frequency conversion unit, the specific working parameters of the frequency conversion unit are determined according to the comparison result, and the running frequency of the frequency conversion unit is adjusted; the real-time heating temperature of the frequency conversion unit is detected, when the real-time heating temperature meets a preset target temperature value, the frequency conversion unit is controlled to provide working energy for terminal equipment connected with the frequency conversion unit, the photovoltaic system and the frequency conversion equipment are combined to guide work, and the power produced by the photovoltaic system is read in real time, so that the photovoltaic power supply can be enabled to exert the maximum utilization rate. If the power is supplied to the commercial power, acquiring the current time information of the frequency converter set; matching the time information with a preset commercial power unit price schedule, and determining the electricity price corresponding to the time information; the actual operation frequency of the frequency converter set is determined based on the electricity price, the frequency converter set is controlled to operate according to the actual operation frequency, energy is supplied to the terminal equipment connected with the frequency converter set, and energy and money are saved under the condition that the comfort degree is not influenced.
Drawings
Fig. 1 is a schematic diagram of a photovoltaic and utility power linkage control method according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a photovoltaic and utility power linkage control method according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a photovoltaic and utility power linkage control method according to a third embodiment of the present invention;
fig. 4 is a schematic view of an embodiment of a photovoltaic and utility power linkage control device according to an embodiment of the present invention;
fig. 5 is a schematic view of another embodiment of the photovoltaic and utility power linkage control device according to the embodiment of the present invention;
fig. 6 is a schematic diagram of an embodiment of an electronic device in an embodiment of the invention.
Detailed Description
The embodiment of the invention provides a photovoltaic and commercial power linkage control method, device, equipment and storage medium.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of understanding, a specific flow of the embodiment of the present invention is described below, and referring to fig. 1, a first embodiment of the photovoltaic and utility power linkage control method in the embodiment of the present invention includes:
101. responding to selection operation of a user, and determining a corresponding power supply mode based on the selection operation, wherein the power supply mode comprises photovoltaic power supply and mains power supply;
the method comprises the steps that a remote control device is in wired connection with a frequency conversion unit, and a network cable set corresponding to the functions of the remote control device is determined, wherein the functions comprise the selection of a photovoltaic power supply mode or a commercial power supply mode; writing the network cable set into a storage space of a remote control device, and setting a main program of the remote control device to call; and initializing the functions of the remote control device according to the network cable set, so that the keys on the remote control device realize the respective corresponding functions.
In practice, the remote control device may be a power supply mode adjusting instrument installed at a fixed position, or may be selected by a user through specific software at a mobile phone end. Monitoring the clicking operation or the selecting operation of a user on the monitoring device, generating a corresponding instruction for selecting photovoltaic power supply or commercial power supply, and determining a corresponding power supply mode based on the instruction.
102. If the power supply mode is photovoltaic power supply, acquiring the output power of an output circuit of the inverter by using a data acquisition device;
in this embodiment, the data acquisition device is located on the output circuit of the inverter, and the data acquisition device may be an ammeter or a voltmeter, and calculates the current or voltage or output power generated by the photovoltaic system by detecting the current or voltage flowing through the data acquisition device, and the current or voltage or power provided by the photovoltaic system to the inverter unit.
Further, detecting the current or voltage flowing through the data acquisition device is specifically by: when the data acquisition device is triggered through monitoring, the voltage change of the data acquisition device is acquired, and a current value or a voltage value generated by the photovoltaic system is obtained.
Further, calculating the output power generated by the photovoltaic system based on the current or voltage transmitted and measured by the data acquisition device specifically comprises:
and if the data acquisition device is an ammeter, acquiring the current value in the time period T in real time, and acquiring the average current detected by the data acquisition device in the time period T based on the current value and the time period. And obtaining the impedance R of the data acquisition device, and calculating the output power of the output circuit of the inverter through P = I R, wherein P is the power, I is the obtained average current, and R is the impedance of the data acquisition device.
And if the data acquisition device is a voltmeter, acquiring the voltage value in the time period T in real time, and obtaining the average voltage detected by the data acquisition device in the time period T based on the voltage value and the time period. And obtaining the impedance R of the data acquisition device, and calculating the output power of the output circuit of the inverter through P = U/R, wherein P is power, U is the obtained average voltage, and R is the impedance of the data acquisition device.
103. Comparing the output power with the working parameters of the frequency conversion unit to obtain a comparison result, wherein the frequency conversion unit is provided with at least two working parameters;
in this embodiment, specific working parameters of the frequency converter set are obtained, where the working parameters may be preset current, voltage or power of the frequency converter set, and the working parameters are divided into two types, one type is a value insufficient for driving the frequency converter set, and the other type is a value capable of driving the frequency converter set;
the method comprises the steps of comparing output power or current or voltage with working parameters of a frequency converter set, specifically, judging whether the current generated power or current or voltage of a photovoltaic system can drive the frequency converter set or not, judging the specific current, voltage and power which can enable the frequency converter set to operate according to the current generated power or current or voltage of the photovoltaic system under the condition that the current generated power or current or voltage can drive the frequency converter set, and taking the judgment result of the driving and the specific current, voltage and power output as a comparison result, wherein the specific current, voltage and power are the power or current or voltage obtained by subtracting the power or current or voltage lost in transmission from the output power or current or voltage.
104. Determining specific working parameters of the frequency conversion unit according to the comparison result, and adjusting the operating frequency of the frequency conversion unit based on the specific working parameters;
if the comparison result is that the output frequency, voltage or current cannot drive the frequency converter set, the operating frequency of the frequency converter set is 0 Hz, namely the frequency converter set and the heat pump in the frequency converter set do not operate; and if the comparison result is that the output frequency or voltage or current can drive the frequency converter set, enabling the frequency converter set to operate at the maximum frequency based on the output frequency or voltage or current.
The operation frequency of the frequency conversion unit is adjusted based on the specific working parameters through the following steps: obtaining working parameters corresponding to the current operating frequency of the frequency converter set, judging whether the working parameters are the same as the specific currently determined working parameters or not, if so, continuing to operate at the current operating frequency, and if not, calculating the output frequency or the frequency with which the voltage or the current enables the frequency converter set to operate at the maximum frequency, so that the frequency of the frequency converter set operates at the frequency.
Furthermore, photovoltaic power generation has instability, and in order to reduce frequency fluctuation of the unit on different platforms, each frequency is required to be continuously operated for a fixed period of time to switch the platforms.
105. And detecting the real-time heating temperature of the frequency conversion unit, and controlling the frequency conversion unit to provide working energy for the terminal equipment connected with the frequency conversion unit when the real-time heating temperature meets a preset target temperature value.
The temperature of the frequency converter set can be obtained through a temperature sensor included in the frequency converter set, or the temperature can be calculated based on the power transmitted to the frequency converter set by the photovoltaic system.
The temperature of obtaining the frequency conversion unit through the temperature sensor specifically passes through: the frequency converter set comprises a temperature detection circuit which is mainly formed by an internal or external temperature sensor (mostly negative temperature coefficient thermistor in practice) and is connected with a resistor in series to form a +5V voltage division circuit, so that a temperature change signal is converted into a voltage signal, and the specific temperature of the frequency converter set is displayed based on the voltage signal.
Under the condition that the real-time heating temperature meets a preset target temperature value, calculating a maximum heat energy supply value of an inverter output circuit at the current moment based on the real-time heating temperature and energy loss during energy supply; acquiring the required energy of each terminal device, and determining target devices in at least one terminal device based on the required energy and the heat energy supply value of each terminal device; and controlling the frequency converter set to provide working energy for the target equipment.
Further, the supply of the operating energy to the target device is specifically performed by: and calculating heat energy in the frequency converter unit based on the temperature of the frequency converter unit, and then calculating an electric energy value capable of converting the heat energy, wherein the electric energy value can supply energy to the terminal equipment to drive the terminal equipment to operate.
In the embodiment of the invention, photovoltaic power supply or commercial power supply is determined based on the selection operation of a user, if the photovoltaic power supply is adopted, the output power of an output circuit of an inverter is collected and compared with the working parameters of a frequency conversion unit, the specific working parameters of the frequency conversion unit are determined according to the comparison result, and the operating frequency of the frequency conversion unit is adjusted; the real-time heating temperature of the frequency conversion unit is detected, when the real-time heating temperature meets a preset target temperature value, the frequency conversion unit is controlled to provide working energy for terminal equipment connected with the frequency conversion unit, the photovoltaic system and the frequency conversion equipment are combined to guide work, and the power produced by the photovoltaic system is read in real time, so that the photovoltaic power supply can be enabled to exert the maximum utilization rate.
Referring to fig. 2, a second embodiment of the photovoltaic and utility power linkage control method according to the embodiment of the present invention includes:
201. responding to selection operation of a user, and determining a corresponding power supply mode based on the selection operation, wherein the power supply mode comprises photovoltaic power supply and mains power supply;
if the photovoltaic power supply is adopted, a user can set a target temperature value on a display interface of the remote control device;
if the power supply is supplied to the commercial power, a user can set the starting time and the ending time for starting the operation of the frequency conversion unit, the on-off state of the current frequency conversion unit, the target temperature value and the maximum operation frequency of the unit in each period of time on a display interface of the remote control device.
202. If the power supply mode is photovoltaic power supply, acquiring the output power of an output circuit of the inverter by using a data acquisition device;
acquiring output parameters of the inverter output circuit within a certain continuous time in real time based on the data acquisition device, and calculating average parameters within the certain continuous time; and calculating the output power of the output circuit of the inverter by using a power calculation formula based on the average parameter and the impedance of the data acquisition device, wherein the output parameter can be voltage or current.
203. Comparing the output power with the working parameters of the frequency conversion unit to obtain a comparison result, wherein the frequency conversion unit is provided with at least two working parameters;
204. determining specific working parameters of the frequency conversion unit according to the comparison result, and adjusting the running frequency of the frequency conversion unit based on the specific working parameters;
if the at least one second working mode is one, if the comparison result shows that the output power is not larger than the first rated power, determining that the frequency converter unit works in the first working mode, adjusting the frequency converter unit to run at the first running frequency based on the working parameters of the first working mode, and stopping a heat pump in the frequency converter unit, namely that the frequency converter unit and the heat pump of the frequency converter unit do not run at the moment;
if the comparison result is that the output power is larger than the first rated power, determining that the frequency conversion unit works in a second working mode, adjusting the frequency conversion unit to run at a second running frequency based on working parameters of the second working mode, and running a heat pump in the frequency conversion unit; the second operating frequency is the maximum frequency at which the output power can operate the frequency converter set.
And if the comparison result is that the output power is greater than the second rated power, determining that the specific working parameter of the frequency conversion unit is the second working mode, and adjusting the running frequency of the frequency conversion unit to be the maximum running frequency of the frequency conversion unit.
If the number of the at least one second working mode is two, and if the comparison result shows that the output power is not larger than the first rated power, the frequency converter unit is determined to work in the first working mode, the frequency converter unit is adjusted to run at the first running frequency based on the working parameters of the first working mode, and the heat pump in the frequency converter unit is stopped, namely the frequency converter unit does not run at the moment.
205. Acquiring real-time heating temperature of the frequency conversion unit, and judging whether the temperature meets a preset target temperature value or not;
the real-time heating temperature of the frequency conversion unit can be obtained through: the method comprises the steps of obtaining the frequency of a frequency conversion unit and the running time of the frequency conversion unit, calculating the work of the frequency conversion unit under the frequency based on the frequency and the time, calculating the convertible heat according to the work and the loss caused by the work, obtaining the real-time heating temperature of the frequency conversion unit through the heat, wherein the calculation formula is T = Q/(C × M), T is the temperature, Q is the heat energy which can be converted by the work of the frequency conversion unit, C is the specific heat capacity, and M is the mass of a medium contained by the frequency conversion unit.
206. If the preset target temperature value is met, calculating the maximum heat energy supply value of the inverter output circuit at the current moment based on the real-time heating temperature and the energy loss during energy supply;
and acquiring energy loss during energy supply, and subtracting the energy loss based on the heat energy which can be converted by the Q, namely obtaining the maximum heat energy supply value of the inverter output circuit at the current moment, wherein the Q is the work done by the frequency conversion unit.
207. Acquiring the required energy of each terminal device, and determining target devices in at least one terminal device based on the required energy and the heat energy supply value of each terminal device;
the required energy of each terminal device is the rated current, the rated voltage or the rated power which can drive each terminal device, and the value of the rated current, the rated voltage or the rated power can be obtained by obtaining the parameter information of each terminal device.
The target device of the at least one end device is determined based on the required energy and the heat energy supply value of each end device by: and establishing an energy management model based on the data of the history determination equipment by taking the lowest equipment operation cost as a primary optimization target. The energy value which can be provided is input, the optimal operation scheme, namely the specific target equipment is output, and the scheduling between the energy and the equipment is realized.
208. And controlling the frequency converter set to provide working energy for the target equipment.
According to the embodiment of the invention, photovoltaic power supply or commercial power supply is determined based on selection operation of a user, if the photovoltaic power supply is adopted, the output power of an output circuit of an inverter is collected and compared with the working parameters of a frequency conversion unit, the specific working parameters of the frequency conversion unit are determined according to the comparison result, and the running frequency of the frequency conversion unit is adjusted; the real-time heating temperature of the frequency conversion unit is detected, when the real-time heating temperature meets a preset target temperature value, the frequency conversion unit is controlled to provide working energy for terminal equipment connected with the frequency conversion unit, the photovoltaic system and the frequency conversion equipment are combined to guide work, and the power produced by the photovoltaic system is read in real time, so that the photovoltaic power supply can be enabled to exert the maximum utilization rate.
Referring to fig. 3, a third embodiment of the photovoltaic and utility power linkage control method according to the embodiment of the present invention includes:
301. responding to selection operation of a user, and determining a corresponding power supply mode based on the selection operation, wherein the power supply mode comprises photovoltaic power supply and mains power supply;
302. if the power supply mode is photovoltaic power supply, acquiring the output power of an output circuit of the inverter by using a data acquisition device;
carry out wired connection between with data acquisition device and the heat pump, adopt Modbus485 communication between data acquisition device and the heat pump, based on data acquisition device transmission and measuring electric current or voltage, the heat pump can real-timely read the produced electric current of photovoltaic inverter or voltage to the operating frequency of deciding frequency conversion unit.
303. Comparing the output power with the working parameters of the frequency conversion unit to obtain a comparison result, wherein the frequency conversion unit is provided with at least two working parameters;
if the working parameter is current, acquiring rated current of the frequency conversion unit, and presetting three working parameters I01, I02 and I03 based on the rated current; if the data acquisition device is an ammeter, the current value acquired by the ammeter is marked as I.
304. Determining specific working parameters of the frequency conversion unit according to the comparison result, and adjusting the operating frequency of the frequency conversion unit based on the specific working parameters;
when I is less than or equal to I01, the heat pump does not run and is started, because the photovoltaic power generation amount is not enough to drive the heat pump system at the moment, the use of commercial power is avoided when unnecessary, and the operation is in a sleep mode; when I01 is more than or equal to I < I02, the frequency conversion unit operates at the maximum frequency which can be driven by I, and is in a low-frequency mode; when I03 is not more than I03 and less than I03, the frequency converter set operates at the maximum frequency which can be driven by I, and is in an intermediate frequency mode; when I03 is less than I, the frequency conversion unit can run at a set maximum frequency, and is in a high-frequency mode;
305. detecting the real-time heating temperature of the frequency conversion unit, and controlling the frequency conversion unit to provide working energy for terminal equipment connected with the frequency conversion unit when the real-time heating temperature meets a preset target temperature value;
306. if the power supply mode is commercial power supply or the frequency converter set works in a first working mode, acquiring current time information of the frequency converter set;
if the user selects the power supply mode to supply power for the commercial power or the frequency converter unit works in the first working mode, namely under the condition of not running, the on-off state of the frequency converter unit currently set by the user is checked, and if the frequency converter unit is in the on state and the photovoltaic system cannot provide enough electric energy, the current time point is obtained.
307. Matching the time information with a preset commercial power unit price schedule, and determining the electricity price corresponding to the time information;
and searching the electricity price corresponding to the current time point in a corresponding relation table of the time information and the commercial electricity price based on the current time information of the frequency converter set.
308. And determining the actual operating frequency of the frequency converter set based on the electricity price, controlling the frequency converter set to operate according to the actual operating frequency, and supplying energy to the terminal equipment connected with the frequency converter set.
Determining the electricity price grade corresponding to the electricity price; and determining the actual operating frequency of the frequency converter set according to the corresponding relation between the preset electricity price grade and the target temperature value and the operating frequency of the frequency converter set. The on-off state, the target temperature value and the maximum operating frequency of the frequency converter set are controllable.
The electricity price is in three electricity price grades of A grade, B grade and C grade from low to high, and the running frequency of the frequency conversion unit also has the frequencies of three grades of low frequency, intermediate frequency and high frequency. If the target temperature value is higher and the certain time is A-gear electricity price, the operation frequency of the frequency conversion unit is high frequency; if the certain time is B-gear electricity price, the operation frequency of the frequency conversion unit is intermediate frequency; if the certain time is C-gear electricity price, the operation frequency of the frequency conversion unit is low frequency.
According to the embodiment of the invention, the current time information of the frequency conversion unit is obtained; matching the time information with a preset commercial power unit price schedule, and determining the electricity price corresponding to the time information; the actual operation frequency of the frequency converter set is determined based on electricity price, the frequency converter set is controlled to operate according to the actual operation frequency, energy is supplied to the terminal equipment connected with the frequency converter set, and energy and money are saved under the condition that comfort degree is not affected.
In the above, the photovoltaic and utility power linkage control method in the embodiment of the present invention is described, and in the following, the photovoltaic and utility power linkage control device in the embodiment of the present invention is described, please refer to fig. 4, an embodiment of the photovoltaic and utility power linkage control device in the embodiment of the present invention includes;
a response module 401, configured to respond to a selection operation of a user, and determine a corresponding power supply manner based on the selection operation, where the power supply manner includes photovoltaic power supply and mains power supply;
an acquisition module 402, configured to acquire an output power of an inverter output circuit by using a data acquisition device if the power supply mode is photovoltaic power supply;
a comparison module 403, configured to compare the output power with working parameters of a frequency converter set to obtain a comparison result, where the frequency converter set has at least two working parameters;
an adjusting module 404, configured to determine a specific working parameter of the frequency converter unit according to the comparison result, and adjust an operating frequency of the frequency converter unit based on the specific working parameter;
the first control module 405 is configured to detect a real-time heating temperature of the inverter unit, and control the inverter unit to provide working energy to a terminal device connected to the inverter unit when the real-time heating temperature satisfies a preset target temperature value.
In the embodiment of the invention, photovoltaic power supply or commercial power supply is determined based on the selection operation of a user, if the photovoltaic power supply is adopted, the output power of an output circuit of an inverter is collected and compared with the working parameters of a frequency conversion unit, the specific working parameters of the frequency conversion unit are determined according to the comparison result, and the operating frequency of the frequency conversion unit is adjusted; the real-time heating temperature of the frequency conversion unit is detected, when the real-time heating temperature meets a preset target temperature value, the frequency conversion unit is controlled to provide working energy for terminal equipment connected with the frequency conversion unit, the photovoltaic system and the frequency conversion equipment are combined to guide work, and the power produced by the photovoltaic system is read in real time, so that the photovoltaic power supply can be enabled to exert the maximum utilization rate. If the power is supplied to the commercial power, acquiring the current time information of the frequency converter set; matching the time information with a preset commercial power unit price schedule, and determining the electricity price corresponding to the time information; the actual operation frequency of the frequency converter set is determined based on the electricity price, the frequency converter set is controlled to operate according to the actual operation frequency, energy is supplied to the terminal equipment connected with the frequency converter set, and energy and money are saved under the condition that the comfort degree is not influenced.
Referring to fig. 5, another embodiment of the photovoltaic and utility power linkage control device in the embodiment of the present invention includes:
a response module 401, configured to respond to a selection operation of a user, and determine a corresponding power supply manner based on the selection operation, where the power supply manner includes photovoltaic power supply and mains power supply;
an acquisition module 402, configured to acquire an output power of an inverter output circuit by using a data acquisition device if the power supply mode is photovoltaic power supply;
a comparison module 403, configured to compare the output power with working parameters of a frequency converter set to obtain a comparison result, where the frequency converter set has at least two working parameters;
an adjusting module 404, configured to determine a specific working parameter of the frequency converter unit according to the comparison result, and adjust an operating frequency of the frequency converter unit based on the specific working parameter;
the first control module 405 is configured to detect a real-time heating temperature of the inverter unit, and control the inverter unit to provide working energy to a terminal device connected to the inverter unit when the real-time heating temperature satisfies a preset target temperature value.
In this embodiment, the acquiring module 402 includes:
the acquisition unit 4021 is used for acquiring the output parameters of the inverter output circuit within a certain continuous time in real time based on the data acquisition device and calculating the average parameters within the certain continuous time;
and the calculating unit 4022 is configured to calculate the output power of the inverter output circuit by using a power calculation formula based on the average parameter and the impedance of the data acquisition device.
Wherein the comparing module 403 comprises:
a first determining unit 4031, configured to determine a first rated power of the frequency converter set based on the first operating mode;
a second determining unit 4032, configured to determine at least one second rated power of the inverter unit based on the at least one second operating mode, where the first rated power is smaller than the second rated power;
a comparing unit 4033, configured to compare the output power with the first rated power and the at least one second rated power, respectively, to obtain a comparison result.
In this embodiment, the adjusting module 404 includes:
a first adjusting unit 4041, configured to determine that the inverter unit operates in the first operating mode if the comparison result indicates that the output power is not greater than the first rated power, adjust the inverter unit to operate at a first operating frequency based on operating parameters of the first operating mode, and stop a heat pump in the inverter unit;
a second adjusting unit 4042, configured to determine that the inverter unit operates in the second operating mode if the comparison result indicates that the output power is greater than the first rated power, adjust the inverter unit to operate at a second operating frequency based on operating parameters of the second operating mode, and operate a heat pump in the inverter unit;
a third adjusting unit 4043, configured to determine, if the output power is greater than the second rated power as the comparison result, that the specific operating parameter of the frequency converter set is the second operating mode, and adjust the operating frequency of the frequency converter set to be the maximum operating frequency of the frequency converter set.
In this embodiment, the adjusting module 404 further includes:
a fourth adjusting unit 4044, configured to determine that the inverter unit operates in the first operating mode if the comparison result indicates that the output power is not greater than the first rated power, adjust the inverter unit to operate at the first operating frequency based on operating parameters of the first operating mode, and stop a heat pump in the inverter unit;
a fifth adjusting unit 4045, configured to determine that the inverter unit determines that the inverter unit operates in the second operating mode if the comparison result indicates that the output power is greater than the first rated power and smaller than the second rated power, adjust the inverter unit to operate at a third operating frequency based on operating parameters of the second operating mode, and operate a heat pump in the inverter unit;
a sixth adjusting unit 4046, configured to determine that the inverter unit operates in the second operating mode if the comparison result indicates that the output power is not less than the second rated power, adjust the inverter unit to operate at a fourth operating frequency based on operating parameters of the second operating mode, and operate a heat pump in the inverter unit.
Wherein the first control module 405 comprises:
a judging unit 4051, configured to obtain a real-time heating temperature of the frequency converter unit, and judge whether the temperature meets a preset target temperature value;
a calculating unit 4052, configured to calculate a maximum heat energy supply value of the inverter output circuit at the current time based on the real-time heating temperature and energy loss during energy supply if the preset target temperature value is satisfied;
a third determining unit 4053, configured to obtain required energy of each of the end devices, and determine a target device of at least one of the end devices based on the required energy of each of the end devices and the thermal energy provision value;
a control unit 4054, configured to control the frequency converter set to provide working energy to the target device.
In this embodiment, photovoltaic and commercial power coordinated control device still includes:
an obtaining module 406, configured to obtain current time information of the frequency converter unit if the power supply mode is mains power supply or the frequency converter unit operates in a first operating mode;
a determining module 407, configured to match the time information with a preset commercial power unit price schedule, and determine an electricity price corresponding to the time information;
and the second control module 408 is configured to determine an actual operating frequency of the frequency converter set based on the electricity price, control the frequency converter set to operate according to the actual operating frequency, and supply power to the end device connected to the frequency converter set.
In this embodiment of the present invention, the second control module 408 includes:
a fourth determining unit 4081 configured to determine an electricity price level corresponding to the electricity price;
a fifth determining unit 4082, configured to determine an actual operating frequency of the frequency converter unit according to a correspondence between a preset electricity price level and a target temperature value and the operating frequency of the frequency converter unit.
In the embodiment of the invention, photovoltaic power supply or commercial power supply is determined based on the selection operation of a user, if the photovoltaic power supply is adopted, the output power of an output circuit of an inverter is collected and compared with the working parameters of a frequency conversion unit, the specific working parameters of the frequency conversion unit are determined according to the comparison result, and the operating frequency of the frequency conversion unit is adjusted; the real-time heating temperature of the frequency conversion unit is detected, when the real-time heating temperature meets a preset target temperature value, the frequency conversion unit is controlled to provide working energy for terminal equipment connected with the frequency conversion unit, the photovoltaic system and the frequency conversion equipment are combined to guide work, and the power produced by the photovoltaic system is read in real time, so that the photovoltaic power supply can be enabled to exert the maximum utilization rate. If the power supply is the commercial power, acquiring the current time information of the frequency converter set; matching the time information with a preset commercial power unit price schedule, and determining the electricity price corresponding to the time information; the actual operation frequency of the frequency converter set is determined based on the electricity price, the frequency converter set is controlled to operate according to the actual operation frequency, energy is supplied to the terminal equipment connected with the frequency converter set, and energy and money are saved under the condition that the comfort degree is not influenced.
Fig. 4 and 5 describe the photovoltaic and utility power linkage control device in the embodiment of the present invention in detail from the perspective of the modular functional entity, and the electronic device in the embodiment of the present invention is described in detail from the perspective of the hardware processing.
Fig. 6 is a schematic structural diagram of an electronic device 600 according to an embodiment of the present invention, where the electronic device 600 may have a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 610 (e.g., one or more processors) and a memory 620, and one or more storage media 630 (e.g., one or more mass storage devices) for storing applications 633 or data 632. Memory 620 and storage medium 630 may be, among other things, transient or persistent storage. The program stored in the storage medium 630 may include one or more modules (not shown), each of which may include a sequence of instructions for operating the electronic device 600. Still further, the processor 610 may be configured to communicate with the storage medium 630 to execute a series of instruction operations in the storage medium 630 on the electronic device 600.
The electronic device 600 may also include one or more power supplies 640, one or more wired or wireless network interfaces 650, one or more input-output interfaces 660, and/or one or more operating systems 631, such as Windows Server, mac OS X, unix, linux, freeBSD, and so forth. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 6 does not constitute a limitation on electronic-based devices, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium, or a volatile computer-readable storage medium, where instructions are stored, and when the instructions are executed on a computer, the instructions cause the computer to execute the steps of the photovoltaic and utility power linkage control method.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses, and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. The utility model provides a photovoltaic and commercial power coordinated control method, is applied to power supply system, power supply system includes photovoltaic power generation system, commercial power system, sets up in the data acquisition device between inverter output circuit and the frequency conversion unit in photovoltaic power generation system, characterized in that, photovoltaic and commercial power coordinated control method includes:
responding to selection operation of a user, and determining a corresponding power supply mode based on the selection operation, wherein the power supply mode comprises photovoltaic power supply and mains power supply;
if the power supply mode is photovoltaic power supply, acquiring the output power of an output circuit of the inverter by using a data acquisition device;
comparing the output power with working parameters of a frequency conversion unit to obtain a comparison result, wherein the frequency conversion unit is provided with at least two working parameters;
determining specific working parameters of the frequency converter set according to the comparison result, and adjusting the operating frequency of the frequency converter set based on the specific working parameters;
and detecting the real-time heating temperature of the frequency converter unit, and controlling the frequency converter unit to provide working energy for terminal equipment connected with the frequency converter unit when the real-time heating temperature meets a preset target temperature value.
2. The photovoltaic and commercial power linkage control method according to claim 1, wherein the collecting the output power of the inverter output circuit by the data collecting device comprises:
acquiring output parameters of the inverter output circuit within a certain continuous time in real time based on the data acquisition device, and calculating average parameters within the certain continuous time;
and calculating the output power of the inverter output circuit by using a power calculation formula based on the average parameter and the impedance of the data acquisition device.
3. The photovoltaic and commercial power linkage control method according to claim 1, wherein the working parameters include a first working mode and at least one second working mode, wherein the first working mode is that the frequency converter set stops operating, and the second working mode is that the frequency converter set operates according to a certain proportion of working frequency;
comparing the output power with the working parameters of the frequency conversion unit to obtain a comparison result, wherein the comparison result comprises the following steps:
determining a first rated power of the frequency converter set based on the first working mode;
determining at least one second rated power of the frequency converter set based on at least one second working mode, wherein the first rated power is smaller than the second rated power;
and comparing the output power with the first rated power and at least one second rated power respectively to obtain a comparison result.
4. The photovoltaic and commercial power linkage control method according to claim 3, wherein if at least one second operating mode is one, the determining a specific operating parameter of the frequency converter unit according to the comparison result and adjusting the operating frequency of the frequency converter unit based on the specific operating parameter includes:
if the comparison result shows that the output power is not larger than the first rated power, determining that the frequency converter unit works in the first working mode, adjusting the frequency converter unit to run at a first running frequency based on working parameters of the first working mode, and stopping a heat pump in the frequency converter unit;
if the comparison result shows that the output power is larger than the first rated power, determining that the frequency converter unit works in the second working mode, adjusting the frequency converter unit to run at a second running frequency based on working parameters of the second working mode, and running a heat pump in the frequency converter unit;
and if the comparison result shows that the output power is greater than the second rated power, determining that the specific working parameter of the frequency converter set is the second working mode, and adjusting the running frequency of the frequency converter set to be the maximum running frequency of the frequency converter set.
5. The photovoltaic and utility power linkage control method according to claim 3, wherein if at least one second operating mode is more than two, the determining the specific operating parameters of the frequency converter unit according to the comparison result and adjusting the operating frequency of the frequency converter unit based on the specific operating parameters comprises:
if the comparison result shows that the output power is not greater than the first rated power, determining that the frequency converter set works in the first working mode, adjusting the frequency converter set to run at a first running frequency based on working parameters of the first working mode, and stopping a heat pump in the frequency converter set;
if the comparison result is that the output power is greater than the first rated power and less than the second rated power, determining that the frequency converter unit works in the second working mode, adjusting the frequency converter unit to run at a third running frequency based on working parameters of the second working mode, and running a heat pump in the frequency converter unit;
and if the comparison result shows that the output power is not less than the second rated power, determining that the frequency converter set works in the second working mode, adjusting the frequency converter set to run at a fourth running frequency based on the working parameters of the second working mode, and running a heat pump in the frequency converter set.
6. The photovoltaic and commercial power linkage control method according to any one of claims 1-5, wherein the detecting a real-time heating temperature of the inverter unit and controlling the inverter unit to provide working energy to a terminal device connected thereto when the real-time heating temperature satisfies a preset target temperature value comprises:
acquiring the real-time heating temperature of the frequency conversion unit, and judging whether the temperature meets a preset target temperature value or not;
if the preset target temperature value is met, calculating a maximum heat energy supply value of the inverter output circuit at the current moment based on the real-time heating temperature and the energy loss during energy supply;
acquiring the required energy of each end device, and determining a target device in at least one end device based on the required energy and the heat energy supply value of each end device;
and controlling the frequency converter set to provide working energy for the target equipment.
7. The photovoltaic and utility power linkage control method according to any one of claims 1 to 5, further comprising:
if the power supply mode is mains power supply or the frequency converter set works in a first working mode, acquiring current time information of the frequency converter set;
matching the time information with a preset commercial power unit price schedule, and determining the electricity price corresponding to the time information;
and determining the actual operating frequency of the frequency converter set based on the electricity price, controlling the frequency converter set to operate according to the actual operating frequency, and supplying energy to the terminal equipment connected with the frequency converter set.
8. The photovoltaic and commercial power linkage control method according to claim 7, wherein the determining the actual operating frequency of the frequency converter unit based on the electricity prices comprises:
determining an electricity price grade corresponding to the electricity price;
and determining the actual operating frequency of the frequency converter set according to the corresponding relation between the preset electricity price grade and the target temperature value and the operating frequency of the frequency converter set.
9. The utility model provides a photovoltaic and commercial power coordinated control device which characterized in that, photovoltaic and commercial power coordinated control device includes:
the response module is used for responding to selection operation of a user and determining a corresponding power supply mode based on the selection operation, wherein the power supply mode comprises photovoltaic power supply and mains power supply;
the acquisition module is used for acquiring the output power of the output circuit of the inverter by using the data acquisition device if the power supply mode is photovoltaic power supply;
the comparison module is used for comparing the output power with working parameters of a frequency conversion unit to obtain a comparison result, wherein the frequency conversion unit is provided with at least two working parameters;
the adjusting module is used for determining specific working parameters of the frequency converter set according to the comparison result and adjusting the operating frequency of the frequency converter set based on the specific working parameters;
the first control module is used for detecting the real-time heating temperature of the frequency converter unit and controlling the frequency converter unit to provide working energy for the terminal equipment connected with the frequency converter unit when the real-time heating temperature meets a preset target temperature value.
10. An electronic device, characterized in that the electronic device comprises: a memory having instructions stored therein and at least one processor, the memory and the at least one processor interconnected by a line;
the at least one processor invokes the instructions in the memory to cause the electronic device to perform the photovoltaic and utility power coordinated control method of any one of claims 1-8.
11. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the photovoltaic and utility power linkage control method according to any one of claims 1 to 8.
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| CN202211644275.XA CN115954870A (en) | 2022-12-20 | 2022-12-20 | Photovoltaic and commercial power linkage control method, device, equipment and storage medium |
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| CN202211644275.XA CN115954870A (en) | 2022-12-20 | 2022-12-20 | Photovoltaic and commercial power linkage control method, device, equipment and storage medium |
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