CN115682370A

CN115682370A - Photovoltaic ice storage air conditioner control strategy adjusting method, device and system

Info

Publication number: CN115682370A
Application number: CN202211379042.1A
Authority: CN
Inventors: 王升; 饶川东; 刘昊; 宋炎林; 何玉雪
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-02-03

Abstract

The invention discloses a method, a device and a system for adjusting a control strategy of a photovoltaic ice cold accumulation air conditioner, belonging to the field of photovoltaic ice cold accumulation air conditioners; when the ice melting control strategy of the current period is judged to be unreasonable according to the running condition of the current period, adjusting the ice melting control strategy of the next period, and then adjusting the photovoltaic power utilization control strategy of the next period by combining the adjusted ice melting control strategy of the next period; in addition, when the current-period power utilization control strategy is determined to be unreasonable directly according to the current-period power generation, power utilization and power storage conditions of the photovoltaic system, the next-period photovoltaic power utilization control strategy is also adjusted. According to the scheme, whether the ice melting control strategy in the current period and the power utilization control strategy in the current period are reasonable or not is judged according to the actual production operation condition in the current period, and the ice melting control strategy in the next period and the photovoltaic power utilization control strategy in the next period are adjusted according to unreasonable positions when the ice melting control strategy in the next period and the photovoltaic power utilization control strategy in the next period are unreasonable, so that the next period of the air conditioner can be operated efficiently, and the operation cost and the energy consumption of the next period are effectively reduced.

Description

Photovoltaic ice storage air conditioner control strategy adjusting method, device and system

Technical Field

The invention relates to the field of photovoltaic ice storage air conditioners, in particular to a method, a device and a system for adjusting a control strategy of a photovoltaic ice storage air conditioner.

Background

The ice storage air conditioning system performs refrigeration and ice storage at night during the low electricity price valley period, performs ice melting and cold release during the daytime when needed, reduces the power consumption of the air conditioning system during the peak period of the power grid, and achieves the purposes of peak clipping and valley filling and electric load balancing. The photovoltaic air conditioning system performs photovoltaic power generation by utilizing renewable solar energy resources, so that fossil energy consumed by urban power generation can be effectively reduced, and urban power supply pressure is reduced. The photovoltaic ice cold accumulation air-conditioning system just combines the photovoltaic ice cold accumulation air-conditioning system and the air-conditioning system, so that the operating cost of the air-conditioning system is greatly saved, and the energy consumption of the air-conditioning system is reduced.

In the actual operation process of the traditional ice storage air conditioning system, for an ice melting control link, based on the time interval of peak-valley level of electricity price, only ice melting and cold supply are adopted at the time interval of peak of electricity price, and other air conditioning unit machines are started when the load requirement is not met. And now, a photovoltaic system is introduced, and the traditional air conditioning system control strategy is difficult to ensure the efficient operation of the system, so that the operation cost and the energy consumption of the system cannot be effectively reduced.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a method, a device and a system for adjusting a control strategy of a photovoltaic ice storage air conditioner, and aims to solve the problems that the traditional control strategy of an air conditioning system is difficult to ensure the efficient operation of the system, and the operation cost and the energy consumption of the system cannot be effectively reduced.

The technical scheme adopted by the invention for solving the technical problem is as follows:

in a first aspect, a method for adjusting a control strategy of a photovoltaic ice storage air conditioner is provided, which includes the following steps:

a photovoltaic ice storage air conditioner control strategy adjusting method comprises the following steps:

acquiring the current cycle operation condition of the air conditioner and the current cycle power generation, power utilization and power storage conditions of the photovoltaic system;

when the current period ice melting control strategy of the air conditioner is determined to be unreasonable according to the current period operation condition, adjusting the next period ice melting control strategy; when the current period photovoltaic power utilization control strategy is determined to be unreasonable according to the current period power generation, power utilization and power storage conditions, if the next period ice melting control strategy does not need to be adjusted, the next period photovoltaic power utilization control strategy is directly adjusted; and if the ice melting control strategy of the next period needs to be adjusted, adjusting the photovoltaic power utilization control strategy of the next period by combining the adjusted ice melting control strategy of the next period.

Further, still include:

acquiring the ice melting and cooling capacity in hours of the current period running load peak time period of the air conditioner;

if the ice-melting and cold-supplying quantity per hour is smaller than a preset maximum value, determining that the ice-melting control strategy of the air conditioner in the current period is unreasonable; if the small ice melting and cold supplying amount is equal to the preset maximum value, acquiring the running load of a water chilling unit of the air conditioner in the load peak time period;

if the operation load of any water chilling unit is below the preset operation high efficiency region, determining that the ice melting control strategy in the current period is unreasonable; if the operation loads of all the water chilling units are in the preset operation high-efficiency area or above the preset operation high-efficiency area, acquiring the operation loads of the double-working-condition units of the air conditioner in the load peak time period;

if the operation load of any one double-working-condition unit is below a preset operation high-efficiency area, judging that the ice melting control strategy in the current period is unreasonable; and if the operation load of all the double-working-condition units is in a preset operation high-efficiency area or above, determining that the ice melting control strategy in the current period is reasonable.

Further, still include:

acquiring the hourly ice melting and cooling capacity of the electricity price peak section of the non-load peak time of the current period operation of the air conditioner;

if the ice melting and cooling amount per hour is smaller than a preset maximum value, judging that the ice melting control strategy of the air conditioner in the current period is unreasonable; if the small ice melting and cold supplying amount is equal to the preset maximum value, acquiring the running load of a water chilling unit of which the air conditioner is started at the electricity price peak section and the running load of a double-working-condition unit of which the air conditioner is started at the electricity price peak section;

if the operating loads of all the started water chilling units and the operating loads of all the started dual-working-condition units are in corresponding preset operating high-efficiency areas, determining that the ice melting control strategy in the current period is reasonable; and if the running load of any started water chilling unit and/or the running load of any started double-working-condition unit are not in the corresponding preset running high-efficiency area, determining that the current periodic ice melting control strategy is unreasonable.

Further, the method also comprises the following steps:

obtaining a de-icing and cooling capacity set value of the electricity price section of the non-load peak time of the current period operation of the air conditioner;

if the ice-melting and cold-supplying quantity set value is larger than the load demand, determining that the ice-melting control strategy in the current period is unreasonable; if the ice-melting cooling capacity set value is larger than or equal to the load demand, acquiring the running load of a water chilling unit of which the air conditioner is started at the electricity price section and the running load of a double-working-condition unit of which the air conditioner is started at the electricity price section;

if the running loads of all the started water chilling units and the running loads of all the started double-working-condition units are in the corresponding preset high-efficiency areas, determining that the ice melting control strategy in the current period is reasonable; and if the running load of any started water chilling unit and/or the running load of any started double-working-condition unit are not in the corresponding preset running high-efficiency area, determining that the current periodic ice melting control strategy is unreasonable.

Further, the ice-melting and cold-supplying quantity set value = adjustable coefficient of the total ice-melting and cold-supplying quantity in the current period and the total ice-melting and cold-supplying quantity in the previous day, and the adjustable coefficient is obtained by comparing the weather forecast parameters in the previous day with the weather forecast parameters in the current period and comparing the load demand in the previous day with the load demand in the current period.

Further, the adjusting the ice-melting control strategy of the next period includes:

when the hour ice-melting cooling capacity is smaller than the preset maximum value, increasing the hour ice-melting cooling capacity of the load peak time section or the electricity price peak section in the next cycle ice-melting control strategy to be the preset maximum value;

or when the operation load of any water chilling unit in the load peak time period is not in the preset operation high-efficiency area or is above the preset operation high-efficiency area, adjusting the operation loads of all water chilling units in the load peak time period in the ice melting control strategy of the next period to be in the preset operation high-efficiency area or above the preset operation high-efficiency area;

or when the operation load of any double-working-condition unit in the load peak time period is not in the preset operation high-efficiency area or is above the preset operation high-efficiency area, adjusting the operation loads of all double-working-condition units in the load peak time period in the ice melting control strategy of the next period to be in the preset operation high-efficiency area or above the preset operation high-efficiency area;

or when the running load of any started water chilling unit or any started double-working-condition unit at the electricity price peak section is not in the corresponding preset running high-efficiency area, reducing the ice melting cooling capacity of the electricity price peak section in the ice melting control strategy of the next period, so that the cold chilling unit started in the next period and the double-working-condition unit are in the corresponding preset running high-efficiency area;

or when the ice-melting cooling capacity set value in the electricity price segment is larger than the load demand, reducing the ice-melting cooling capacity of the electricity price segment in the ice-melting control strategy of the next period, so that the ice-melting cooling capacity is not larger than the load demand in the electricity price segment of the next period;

or when the running loads of all started water chilling units in the electricity price level section are in the corresponding preset running high-efficiency region and the running loads of all started double-working-condition units are not in the corresponding preset running high-efficiency region or are not below the corresponding preset running high-efficiency region, the ice-melting cooling capacity is increased and the number of the water chilling units and the double-working-condition units needing to be started is reduced when the electricity price level section is in the ice-melting control strategy of the next period; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, the ice melting and cold supplying amount is reduced, so that the started water chilling unit and the double-working-condition unit are in the corresponding preset operation high-efficiency areas;

or when the running loads of all started water chilling units in the electricity price level section are in the corresponding preset running high-efficiency region and the running loads of all started double-working-condition units are below the corresponding preset running high-efficiency region, increasing ice-melting cooling capacity during the electricity price level section in the ice-melting control strategy of the next period so as to enable the started water chilling units and the double-working-condition units to run in the high-efficiency region; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, increasing the starting numbers of the water chilling unit and the double-working-condition unit;

or when the running loads of all started water chilling units in the electricity price level section are not all in the corresponding preset running high-efficiency region or are not all below the corresponding preset running high-efficiency region, increasing ice-melting cooling capacity and reducing the number of the water chilling units and the double-working-condition units which need to be started when the electricity price level section is in the ice-melting control strategy of the next period; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, the ice melting and cold supplying amount is reduced, so that the started water chilling unit and the started double-working-condition unit are operated in the high-efficiency area;

or when the running loads of all started water chilling units in the electricity price level section are below the corresponding preset running high-efficiency region, increasing ice-melting cooling capacity in the ice-melting control strategy of the next period so as to enable the started water chilling units and the double-working-condition units to run in the high-efficiency region; and if the ice storage amount cannot meet the ice melting and cold supplying requirements at other moments in the same time period, increasing the starting number of the water chilling unit and the double-working-condition unit.

Further, still include:

acquiring different time periods of electricity prices, including an electricity price valley section, an electricity price level section and an electricity price peak section, and judging whether photovoltaic power generation is sufficient or not;

and determining whether the photovoltaic power utilization control strategy in the current period of different power price time periods is reasonable under the conditions of sufficient photovoltaic power generation and insufficient photovoltaic power generation.

Further, the determining whether the photovoltaic power utilization control strategy is reasonable in the current period of the different power price time periods under the condition that the photovoltaic power generation is sufficient includes:

acquiring an electric energy source stored by a storage battery in the photovoltaic system at the electricity price valley section;

if the storage battery utilizes the urban network to store electricity, the unreasonable energy storage strategy in the photovoltaic electricity utilization control strategy in the current period is determined; if the storage battery utilizes the photovoltaic power generation residual to store electricity, a power supply strategy of the electricity price peak section is obtained;

if the power supply strategy of the electricity price peak section is not that photovoltaic direct supply is used firstly and then storage batteries are used for discharging, judging that the power supply strategy of the photovoltaic electricity utilization control strategy in the current period at the electricity price peak section is unreasonable; if the power supply strategy is to use the photovoltaic direct supply first and then use the storage battery for discharging, obtaining a power supply strategy of a power price section;

if the power supply strategy of the electricity price level section is not that the photovoltaic direct supply is firstly used, then the storage battery is used for discharging, and finally the urban network direct supply is used, the power supply strategy of the photovoltaic power utilization control strategy in the current period in the electricity price level section is judged to be unreasonable; and if the power supply strategy of the electricity price level section is that photovoltaic direct supply is firstly used, then storage batteries are used for discharging, and finally the city grid direct supply is used, judging that the power supply strategy of the photovoltaic power utilization control strategy in the current period at the electricity price level section is reasonable.

Further, the determining whether the photovoltaic power utilization control strategy is reasonable in the current period of the different power price time periods under the condition that the photovoltaic power generation is insufficient includes:

acquiring an electric energy source stored by a storage battery at the electricity price valley section;

if the storage battery utilizes the urban network to store electricity, judging that an energy storage strategy in the photovoltaic electricity utilization control strategy in the current period is unreasonable; if the storage battery utilizes the urban network and the photovoltaic power generation allowance to store electricity, a power supply strategy of a power price peak section is obtained;

if the power supply strategy of the electricity price peak section is not that the photovoltaic direct supply is firstly used, then the storage battery is used for discharging, and finally the city grid direct supply is used, the unreasonable power supply strategy of the photovoltaic power utilization control strategy in the electricity price peak section in the current period is judged; if the power supply strategy is that photovoltaic direct supply is firstly used, then storage batteries are used for discharging, and finally municipal network direct supply is used, the power supply strategy of the electricity price section is obtained;

if the power supply strategy of the electricity price level section is not that photovoltaic direct supply is used firstly and then storage batteries are used for discharging, judging that the power supply strategy of the photovoltaic electricity utilization control strategy in the current period in the electricity price level section is unreasonable; and if the power supply strategy of the electricity price level section is to use the photovoltaic direct supply first and then use the storage battery for discharging, judging that the power supply strategy of the photovoltaic power utilization control strategy in the current period in the electricity price level section is reasonable.

Further, the judging whether the photovoltaic power generation is sufficient includes:

acquiring photovoltaic power generation capacity in at least one preset time period when a photovoltaic system generates power and the storage capacity required by the storage battery which is filled fully in each preset time;

if the photovoltaic power generation amount is not smaller than the storage capacity, judging that the photovoltaic power generation is sufficient in the time period; and if the photovoltaic power generation amount is smaller than the storage capacity, judging that the photovoltaic power generation is insufficient in the time period.

In a second aspect, a photovoltaic ice storage air conditioner control strategy adjusting device is provided, which includes:

the current period condition acquisition module is used for acquiring the current period operation condition of the air conditioner and the current period power generation, power utilization and power storage conditions of the photovoltaic system;

the next period strategy adjusting module is used for adjusting the ice melting control strategy of the next period when the fact that the ice melting control strategy of the current period of the air conditioner is unreasonable is determined according to the running condition of the current period; when the current period photovoltaic power utilization control strategy is determined to be unreasonable according to the current period power generation, power utilization and power storage conditions, if the next period ice melting control strategy does not need to be adjusted, the next period photovoltaic power utilization control strategy is directly adjusted; and if the ice melting control strategy of the next period needs to be adjusted, adjusting the photovoltaic power utilization control strategy of the next period by combining the adjusted ice melting control strategy of the next period.

In a third aspect, a photovoltaic ice storage air conditioner control strategy adjustment system is provided, including:

a processor;

a memory for executing the processor-executable instructions;

the processor is configured to perform the method of any one of the aspects provided in the first aspect.

Has the beneficial effects that:

the technical scheme of the application provides a method, a device and a system for adjusting a photovoltaic ice storage air conditioner control strategy, when the current cycle ice melting control strategy is judged to be unreasonable according to the current cycle operation condition, the next cycle ice melting control strategy is adjusted, the power consumption of an air conditioner is changed from before adjustment due to the adjustment of the next cycle ice melting control strategy, if the photovoltaic system is controlled to operate according to the original next cycle photovoltaic power control strategy, actual requirements are not met, the operation cost is high, and therefore the next cycle photovoltaic power control strategy is adjusted by combining the adjusted next cycle ice melting control strategy; in addition, when the current-period power utilization control strategy is determined to be unreasonable directly according to the current-period power generation, power utilization and power storage conditions of the photovoltaic system, the next-period photovoltaic power utilization control strategy is also adjusted. According to the scheme, whether the ice melting control strategy of the current period and the power utilization control strategy of the current period are reasonable or not is judged according to the actual production operation condition of the current period, and when the ice melting control strategy of the next period and the power utilization control strategy of the next period are unreasonable, the ice melting control strategy of the next period and the power utilization control strategy of the photovoltaic power utilization of the next period are adjusted according to unreasonable positions, so that the next period of the air conditioner can operate efficiently, and the operation cost and the energy consumption of the next period are effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart of a method for adjusting a control strategy of a photovoltaic ice storage air conditioner according to an embodiment of the present invention;

FIG. 2 is a flowchart of a method for determining a current-period ice-melting control strategy according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for determining a current-period power utilization control strategy according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a control strategy adjusting device for a photovoltaic ice storage air conditioner according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the technical solutions of the present invention is provided with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.

In a first embodiment, referring to fig. 1, a method for adjusting a control strategy of a photovoltaic ice storage air conditioner includes the following steps:

s11: acquiring the current cycle operation condition of an air conditioner and the current cycle power generation, power utilization and power storage conditions of a photovoltaic system;

s12: when the ice-melting control strategy of the air conditioner in the current period is not reasonable according to the running condition of the current period, adjusting the ice-melting control strategy of the next period; when the photovoltaic power utilization control strategy in the current period is determined to be unreasonable according to the power generation, power utilization and power storage conditions in the current period, if the ice melting control strategy in the next period does not need to be adjusted, the photovoltaic power utilization control strategy in the next period is directly adjusted; and if the ice melting control strategy of the next period needs to be adjusted, adjusting the photovoltaic power utilization control strategy of the next period by combining the adjusted ice melting control strategy of the next period.

According to the method for adjusting the control strategy of the photovoltaic ice storage air conditioner, when the ice melting control strategy in the current period is judged to be unreasonable according to the running condition of the current period, the ice melting control strategy in the next period is adjusted, the power consumption of the air conditioner is changed from before adjustment after the ice melting control strategy in the next period is adjusted, if the photovoltaic system is controlled according to the original photovoltaic power control strategy in the next period, actual requirements are not met, and therefore the photovoltaic power control strategy in the next period is adjusted according to the adjusted ice melting control strategy in the next period; in addition, when the current-period power utilization control strategy is determined to be unreasonable directly according to the current-period power generation, power utilization and power storage conditions of the photovoltaic system, the next-period photovoltaic power utilization control strategy is also adjusted. According to the scheme, whether the ice melting control strategy of the current period and the power utilization control strategy of the current period are reasonable or not is judged according to the actual production operation condition of the current period, and when the ice melting control strategy of the next period and the power utilization control strategy of the next period are unreasonable, the ice melting control strategy of the next period and the power utilization control strategy of the photovoltaic power utilization of the next period are adjusted according to unreasonable positions, so that the next period of the air conditioner can operate efficiently, and the operation cost and the energy consumption of the next period are effectively reduced.

A second embodiment, which is a supplementary description of the first embodiment, the present invention provides a specific method for adjusting a control strategy of a photovoltaic ice thermal storage air conditioner, including the following steps:

firstly, recording the air conditioner operation condition of the past day to obtain the current day operation condition, and the conditions of power generation, power utilization and power storage of the photovoltaic system, namely the current day power generation, power utilization and power storage conditions;

and judging whether the ice melting control strategy is reasonable or not according to the current-day running condition, and judging whether the photovoltaic power utilization control strategy is reasonable or not according to the current-day power generation, power utilization and power storage conditions.

And when the solar energy is not reasonable, adjusting the ice melting control strategy of the next day and the photovoltaic power utilization control strategy of the next day.

The detailed flow of the current-day ice melting control strategy diagnosis is shown in fig. 2, and includes:

step 1: first, the time periods of the peak, flat and valley electricity rates of a day and the time period of the peak load are determined. Illustratively, the time periods of the peak, flat, and valley electricity prices are obtained from authorities at the power supply bureau. The load peak value is the load of the maximum ice melting and cooling capacity when the building load demand is not less than the hour, the cooling capacity of the fully-opened and highly-efficient running of the water chilling unit and the cooling capacity of the fully-opened and highly-efficient running of the double-working-condition unit, and is called the load peak value.

And 2, step: preferentially diagnosing an ice melting control strategy of the load peak time period, then diagnosing an electricity price peak period except the load peak time period, and finally diagnosing an electricity price level period except the load peak time period; in the non-load peak time period, the rationality of the whole time period may not be considered when the ice-melting control strategy or the power utilization control strategy is adjusted, so that the pricing of each time period by the power supply mechanism is combined, and the divided electricity price peak section, the electricity price level section and the electricity price valley section are combined. After the demand is guaranteed preferentially, the ice melting control strategy of the electricity price peak section is preferentially adjusted and then the electricity price flat section is obtained from the economic perspective.

And step 3: in the time period of the peak load value, whether the ice-melting and cold-supplying quantity reaches the maximum value or not is firstly diagnosed, if not, the ice-melting and cold-supplying quantity is considered to be not fully utilized, the energy consumption of the system is improved, and the ice-melting control strategy on the day is judged to be unreasonable; if yes, entering step 4;

and 4, step 4: whether the running loads of the water chilling unit are all in the high-efficiency area or above the high-efficiency area of the unit is diagnosed, if not, the water chilling unit is considered to run below the high-efficiency area, so that the dual-working-condition unit bears more loads, the system is not energy-saving in running, and the ice melting control strategy is unreasonable on the day; if yes, go to step 5; the high-efficiency area of the unit is that the running load interval when the unit runs most electricity-saving is obtained by combining the performance curve of the unit; the trend of a unit performance curve is a parabola with low two ends and high middle, the abscissa is a unit load rate, the ordinate is a ratio COP of refrigerating capacity and power consumption of a unit, the larger COP represents the better energy efficiency of the unit, the load rate represents the ratio of the current cooling capacity and the maximum cooling capacity of the unit, 100% load rate represents full-load operation of the unit, but when the COP of the unit is the maximum, the load rates are all less than 100%, namely the unit operation load is not full, and because of factors such as measurement errors, the high-efficiency area of the unit high-efficiency operation is generally represented by a load rate interval, and each curve can be different because of the water inlet and outlet temperature high-efficiency area. Illustratively, if the high efficiency region is a region having a load factor of 40% to 60%, the region above the high efficiency region is a region having a load factor of more than 60%, and the region below the high efficiency region is a region having a load factor of less than 40%.

And 5: whether the running loads of the double-working-condition unit are all in and above the high-efficiency area is diagnosed, if not, the load born by the water chilling unit is considered to be excessive, the water chilling unit runs above the high-efficiency area and even is fully loaded, the energy consumption of the system is improved, and the ice melting control strategy is unreasonable on the day; if so, the day-to-day ice melting control strategy of the load peak time period is considered to be reasonable;

step 6: at the electricity price peak section except the load peak time section, firstly diagnosing whether the ice-melting and cold-supplying quantity reaches the maximum value or not at the hour, if not, considering that the ice-melting and cold-supplying quantity is not fully utilized, the energy consumption of the system is promoted, and the ice-melting control strategy is unreasonable on the day; if yes, go to step 7;

and 7: diagnosing whether the running load of the started water chilling unit is in a high-efficiency area, and if so, entering a step 8; if not, go to step 9;

and step 8: diagnosing whether the running loads of the started double-working-condition unit are all in the high-efficiency area, and if so, considering that the day-of-the-day ice melting control strategy of the time period is reasonable; if not, entering step 10;

and step 9: diagnosing whether the running loads of the started water chilling units are all below the high-efficiency area, if not, determining that the water chilling units run above the high-efficiency area and bear excessive loads, and the ice melting control strategy is unreasonable on the day; if yes, go to step 11;

step 10: diagnosing whether the running load of the started dual-working-condition unit is below the high-efficiency area, if not, determining that the data at the moment is wrong, and directly outputting the current-day ice melting control strategy to be unreasonable; if yes, go to step 11;

step 11: the ice melting cooling capacity is reduced, so that the started water chilling unit or the double-working-condition unit can operate in a high-efficiency area;

step 12: in the electricity price period except the load peak time period, firstly, an ice-melting cooling capacity set value is obtained, the ice-melting cooling capacity set value = adjustable coefficient, the total ice-melting cooling capacity in the current day and the total ice-melting cooling capacity in the previous day are obtained when the electricity price period in the current day is the electricity price period in the current day, the adjustable coefficient is obtained according to the comparison of the forecast meteorological parameters in the previous day and the meteorological forecast parameters in the current day and the comparison of the load demand in the previous day and the load demand in the current day, according to the meteorological forecast result, the time when the working condition is severe and the load demand is large is multiplied by the coefficient of 1.05-1.1, otherwise, the time is multiplied by the coefficient of 0.95-0.9.

Step 13: whether the ice-melting cooling capacity is less than or equal to the load requirement is diagnosed, if not, the diagnosis result is to reduce the ice-melting cooling capacity; if yes, go to step 14;

step 14: diagnosing whether the running loads of the started water chilling units are all in the high-efficiency area, and if so, entering step 15; if not, go to step 16;

step 15: diagnosing whether the operation loads of the starting dual-working-condition unit are all in the high-efficiency area, and if so, considering that the ice melting control strategy on the same day in the time period is reasonable; if not, entering step 17;

step 16: diagnosing whether the running loads of the started water chilling units are all below the high-efficiency area, and if so, entering a step 18; if not, go to step 19;

and step 17: diagnosing whether the running loads of the started dual-working-condition unit are in the high-efficiency area, and if so, entering step 18; if not, go to step 19;

step 18: and (3) diagnosis results: the ice melting cooling capacity needs to be increased at the moment, and the number of the water chilling units and the double-working-condition units which need to be started is reduced; if the ice storage amount can not meet the ice melting and cooling requirements at other moments in the same time period, the ice melting and cooling capacity is reduced, and the started water chilling unit and the double-working-condition unit operate in a high-efficiency area;

step 19: and (3) diagnosis results: ice melting cooling capacity needs to be increased at the moment, so that the started water chilling unit and the started double-working-condition unit operate in an efficient interval; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, increasing the starting numbers of the water chilling unit and the double-working-condition unit;

the diagnosis of the ice melting control strategy controls the ice melting and cooling capacity according to the maximum ice melting and cooling capacity per hour in the load peak time period and the electricity price peak period; the ice melting and cooling capacity is controlled according to a set value in the power price period except the load peak time period; according to the diagnosis result of each time period, the ice melting and cooling capacity adjusting strategy and the ice melting and cooling capacity adjusting amplitude need to be recorded, and then certain guidance is conducted on the ice melting control strategy of the next day by combining with weather prediction results (different weather can cause unit operation conditions).

The detailed process of photovoltaic power generation diagnosis is shown in fig. 3:

step 21: firstly, determining a peak-valley and flat time period of electricity price, and determining a photovoltaic power generation time period in the current season;

step 22: whether partial time intervals exist in the photovoltaic power generation time period or not is diagnosed, the storage battery can be completely filled with the photovoltaic power generation allowance, and if yes, the photovoltaic power generation is considered to be sufficient; if not, the photovoltaic power generation is considered to be insufficient;

step 23: if the photovoltaic power generation is sufficient, whether the storage battery utilizes the urban network to store power is diagnosed in the early morning electricity price valley section, if so, the photovoltaic power generation allowance is utilized to store power, and if the storage battery is not reasonable in the energy storage strategy in the same day, the photovoltaic power generation allowance is utilized; if not, the step 24 is entered;

and step 24: diagnosing the electricity price peak section, judging whether a power supply strategy of preferentially using photovoltaic direct supply and then using storage battery for discharging is adopted, and if not, judging that the daily electricity operation strategy is unreasonable; if yes, go to step 25;

step 25: diagnosing the electricity price level section, judging whether a power supply strategy of preferentially using photovoltaic direct supply, then using a storage battery for discharging and finally using urban network direct supply is adopted, and if so, considering that the daily electricity operation strategy is reasonable; if not, the daily power utilization operation strategy is unreasonable;

step 26: if the photovoltaic power generation is insufficient, whether the storage battery utilizes the urban network to store power is diagnosed in the early morning electricity price valley section, if not, the current day energy storage strategy is considered to be unreasonable, the urban network is mainly utilized to directly supply power to store power, and partial electric quantity can utilize photovoltaic power generation allowance to store power; if yes, go to step 27;

step 27: diagnosing the peak section of the electricity price, judging whether a power supply strategy of preferentially using photovoltaic direct supply, then using a storage battery for discharging and finally using urban network direct supply is adopted, and if not, considering that the daily electricity utilization operation strategy is unreasonable; if yes, go to step 28;

step 28: diagnosing the electricity price level section, judging whether a power supply strategy of preferentially using photovoltaic direct supply and then using storage battery for discharging is adopted, and if not, considering that the daily electricity operation strategy is unreasonable; if so, the daily power utilization operation strategy is considered to be reasonable;

according to the deviation between the actual meteorological parameters and the predicted meteorological parameters on the diagnosis day, the diagnosis result and the meteorological prediction result on the next day, the energy storage strategy and the power utilization strategy on the next day can be guided to be optimized;

the diagnosis result in the above flow is unreasonable, and the diagnosis should be automatically adjusted by a person, for example, in the above photovoltaic power generation diagnosis, on the premise that the photovoltaic power generation is sufficient and the storage battery only adopts the photovoltaic power storage, in the peak of electricity price, a power supply strategy of "preferentially using the photovoltaic direct supply, secondarily using the storage battery for discharging, and finally using the urban network direct supply" is not adopted, so i can only diagnose unreasonable, the adjustment mode is naturally the reverse, and the power supply strategy of "preferentially using the photovoltaic direct supply, secondarily using the storage battery for discharging, and finally using the urban network direct supply" is adopted, and the person automatically adjusts the diagnosis.

The specific control strategy adjusting method provided by the embodiment of the invention has the advantages that the ice melting and cooling capacity is optimally distributed by diagnosing whether the ice storage refrigeration meets the requirement of efficient operation of the unit, the diagnosis result of whether the ice melting control method has an adjusting space is given, and meanwhile, whether the power utilization and power storage strategies of the system are reasonable or not under the condition of whether the photovoltaic power generation is sufficient or not is diagnosed. And then, according to the diagnosis result, the optimization of the actual operation control strategy of the photovoltaic ice storage system is guided, so that the economic benefit of the operation of the photovoltaic ice storage system is improved.

In a third embodiment, the present invention provides a photovoltaic ice thermal storage air conditioner control strategy adjusting device, as shown in fig. 4, including:

a current period condition obtaining module 41, configured to obtain a current period operation condition of the air conditioner and a current period power generation, power utilization, and power storage condition of the photovoltaic system;

and the current period strategy diagnosis module 42 is used for judging whether the ice melting control strategy of the current period of the air conditioner is reasonable according to the current period operation condition and judging whether the photovoltaic power utilization control strategy of the current period is reasonable according to the current period power generation, power utilization and power storage conditions.

Specifically, the current period policy diagnosis module 42 obtains the hour ice melting and cooling capacity of the current period operation load peak time period of the air conditioner; if the ice-melting cooling capacity is smaller than the preset maximum value in one hour, determining that the ice-melting control strategy of the air conditioner in the current period is unreasonable; if the ice-melting cooling capacity per hour is equal to the preset maximum value, acquiring the running load of a water chilling unit of the air conditioner in the load peak time period; if the operation load of any water chilling unit is below the preset operation high-efficiency area, determining that the ice melting control strategy in the current period is unreasonable; if the operation loads of all the water chilling units are in or above a preset operation high-efficiency area, acquiring the operation loads of the double-working-condition units of the air conditioner in a load peak time period; if the operation load of any double-working-condition unit is below a preset operation high-efficiency area, judging that the ice melting control strategy in the current period is unreasonable; and if the operation loads of all the double-working-condition units are in the preset operation high-efficiency area or above the preset operation high-efficiency area, determining that the ice melting control strategy in the current period is reasonable.

The current period strategy diagnosis module 42 acquires the hour ice melting and cooling capacity of the electricity price peak section of the non-load peak time of the current period operation of the air conditioner; if the ice-melting cooling capacity is smaller than the preset maximum value in one hour, judging that the ice-melting control strategy of the air conditioner in the current period is unreasonable; if the ice melting cooling capacity is equal to the preset maximum value in an hour, acquiring the running load of a water chilling unit of which the air conditioner is started at the electricity price peak section and the running load of a dual-working-condition unit of which the air conditioner is started at the electricity price peak section; if the operation loads of all started water chilling units and the operation loads of all started double-working-condition units are in the corresponding preset operation high-efficiency areas, determining that the ice melting control strategy in the current period is reasonable; and if the operation load of any started water chilling unit and/or the operation load of any started dual-working-condition unit is not in the corresponding preset operation high-efficiency area, determining that the ice melting control strategy in the current period is unreasonable.

The current period strategy diagnosis module 42 acquires the set value of the ice melting and cooling capacity of the electricity price segment of the non-load peak time of the current period operation of the air conditioner; if the ice melting and cooling capacity set value is larger than the load demand, determining that the ice melting control strategy in the current period is unreasonable; if the ice melting cooling capacity set value is larger than or equal to the load requirement, acquiring the running load of a water chilling unit with the air conditioner started at the electricity price level and the running load of a dual-working-condition unit with the air conditioner started at the electricity price level; if the running loads of all started water chilling units and the running loads of all started double-working-condition units are in the corresponding preset high-efficiency areas, determining that the ice melting control strategy in the current period is reasonable; and if the operation load of any started water chilling unit and/or the operation load of any started dual-working-condition unit is not in the corresponding preset operation high-efficiency area, determining that the ice melting control strategy in the current period is unreasonable. The ice-melting cold supply set value = adjustable coefficient, total ice-melting cold supply amount in the current period, total ice-melting cold supply amount in the previous day price segment, and the adjustable coefficient is obtained according to comparison between the weather forecast parameters in the previous day and the weather forecast parameters in the current period and comparison between the load demands in the previous day and the load demands in the current period.

In addition, the current cycle strategy diagnosis module 42 acquires different time periods of electricity prices, including a valley period of electricity prices, a flat period of electricity prices, and a peak period of electricity prices, and determines whether photovoltaic power generation is sufficient; and determining whether the photovoltaic power utilization control strategy in the current period of different power price time periods is reasonable under the conditions of sufficient photovoltaic power generation and insufficient photovoltaic power generation.

Specifically, the current-cycle strategy diagnosis module 42 obtains the electric energy source stored by the storage battery in the photovoltaic system at the electricity price valley section; if the storage battery utilizes the urban network to store electricity, the unreasonable energy storage strategy in the photovoltaic electricity utilization control strategy in the current period is determined; if the storage battery utilizes the photovoltaic power generation margin to store electricity, a power supply strategy of the electricity price peak section is obtained; if the power supply strategy of the electricity price peak section is not that the photovoltaic direct supply is used firstly and then the storage battery is used for discharging, judging that the power supply strategy of the photovoltaic power utilization control strategy in the electricity price peak section in the current period is unreasonable; if the power supply strategy is to use the photovoltaic direct power supply firstly and then use the storage battery for discharging, obtaining the power supply strategy of the electricity price section; if the power supply strategy of the electricity price level section is not that photovoltaic direct supply is firstly used, then storage battery discharging is used, and finally municipal grid direct supply is used, judging that the power supply strategy of the photovoltaic power utilization control strategy in the electricity price level section in the current period is unreasonable; and if the power supply strategy of the electricity price level section is that the photovoltaic direct supply is firstly used, then the storage battery is used for discharging, and finally the urban network direct supply is used, the power supply strategy of the photovoltaic power utilization control strategy in the electricity price level section in the current period is judged to be reasonable.

The current period strategy diagnosis module 42 acquires the electric energy source stored in the storage battery at the electricity price valley section; if the storage battery utilizes the urban network to store electricity, judging that an energy storage strategy in the photovoltaic electricity utilization control strategy in the current period is unreasonable; if the storage battery utilizes the urban network and the photovoltaic power generation allowance to store electricity, a power supply strategy of the electricity price peak section is obtained; if the power supply strategy of the electricity price peak section is not that the photovoltaic direct supply is firstly used, then the storage battery is used for discharging, and finally the urban network direct supply is used, the unreasonable power supply strategy of the photovoltaic power utilization control strategy in the electricity price peak section in the current period is judged; if the power supply strategy is that photovoltaic direct supply is firstly used, then storage batteries are used for discharging, and finally the urban network direct supply is used, the power supply strategy of the electricity price section is obtained; if the power supply strategy of the electricity price level section is not that the photovoltaic direct supply is used firstly and then the storage battery is used for discharging, judging that the power supply strategy of the photovoltaic electricity utilization control strategy in the electricity price level section in the current period is unreasonable; and if the power supply strategy of the electricity price section is to use the photovoltaic direct supply first and then use the storage battery for discharging, judging that the power supply strategy of the photovoltaic power utilization control strategy in the electricity price section in the current period is reasonable. Wherein, judge whether photovoltaic power generation is sufficient, include: acquiring photovoltaic power generation capacity in at least one preset time period when a photovoltaic system generates power and the storage capacity required by the storage battery which is filled fully in each preset time; if the photovoltaic power generation amount is not less than the storage capacity, judging that the photovoltaic power generation is sufficient in a time period; and if the photovoltaic power generation is smaller than the storage capacity, judging that the photovoltaic power generation is insufficient in the time interval.

The next period policy adjusting module 43 is configured to adjust the ice-melting control policy of the next period when it is determined that the ice-melting control policy of the air conditioner in the current period is not reasonable according to the operation condition of the current period; when the photovoltaic power utilization control strategy in the current period is determined to be unreasonable according to the power generation, power utilization and power storage conditions in the current period, if the ice melting control strategy in the next period does not need to be adjusted, the photovoltaic power utilization control strategy in the next period is directly adjusted; and if the ice melting control strategy of the next period needs to be adjusted, adjusting the photovoltaic power utilization control strategy of the next period by combining the adjusted ice melting control strategy of the next period.

Specifically, when the ice-melting and cold-supplying quantity per hour is smaller than the preset maximum value, the next-cycle policy adjusting module 43 increases the ice-melting and cold-supplying quantity per hour of the load peak time period or the electricity price peak period in the ice-melting control policy per hour to the preset maximum value; or when the operation load of any water chilling unit in the load peak time period is not in the preset operation high-efficiency area or is above the preset operation high-efficiency area, adjusting the operation loads of all water chilling units in the load peak time period in the ice-melting control strategy of the next period to be in the preset operation high-efficiency area or be above the preset operation high-efficiency area; or when the operation load of any double-working-condition unit in the load peak time period is not in the preset operation high-efficiency area or is above the preset operation high-efficiency area, adjusting the operation loads of all double-working-condition units in the load peak time period in the ice-melting control strategy of the next period to be in the preset operation high-efficiency area or above the preset operation high-efficiency area; or when the running load of any started water chilling unit or any started double-working-condition unit at the electricity price peak section is not in the corresponding preset running high-efficiency area, reducing the ice melting cooling capacity of the electricity price peak section in the ice melting control strategy of the next period, so that the cold chilling unit started in the next period and the double-working-condition unit are in the corresponding preset running high-efficiency area; or when the ice-melting cooling capacity set value in the electricity price segment is larger than the load demand, reducing the ice-melting cooling capacity of the electricity price segment in the ice-melting control strategy of the next period, so that the ice-melting cooling capacity is not larger than the load demand in the electricity price segment of the next period; or when the running loads of all started water chilling units in the electricity price level section are in the corresponding preset running high-efficiency region and the running loads of all started double-working-condition units are not in the corresponding preset running high-efficiency region or are not below the corresponding preset running high-efficiency region, the ice-melting cooling capacity is increased and the number of the water chilling units and the double-working-condition units needing to be started is reduced when the electricity price level section is in the ice-melting control strategy of the next period; if the ice storage amount can not meet the ice melting and cooling requirements at other moments in the same time period, the ice melting and cooling capacity is reduced, so that the started water chilling unit and the double-working-condition unit are both in the corresponding preset operation high-efficiency areas; or when the running loads of all started water chilling units in the electricity price level section are in the corresponding preset running high-efficiency region and the running loads of all started double-working-condition units are below the corresponding preset running high-efficiency region, increasing ice-melting cooling capacity during the electricity price level section in the ice-melting control strategy of the next period so as to enable the started water chilling units and the double-working-condition units to run in the high-efficiency region; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, increasing the starting numbers of the water chilling unit and the double-working-condition unit; or when the running loads of all started water chilling units in the electricity price level section are not all in the corresponding preset running high-efficiency area or are not all below the corresponding preset running high-efficiency area, increasing ice-melting cooling capacity and reducing the number of the water chilling units and the double-working-condition units which need to be started when the electricity price level section is in the ice-melting control strategy of the next period; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, the ice melting and cold supplying amount is reduced, so that the started water chilling unit and the double-working-condition unit are operated in the high-efficiency area; or when the running loads of all started water chilling units in the electricity price level section are below the corresponding preset running high-efficiency region, increasing ice-melting cooling capacity in the ice-melting control strategy of the next period so as to enable the started water chilling units and the double-working-condition units to run in the high-efficiency region; and if the ice storage amount cannot meet the ice melting and cold supplying requirements at other moments in the same time period, increasing the starting numbers of the water chilling unit and the double-working-condition unit.

The photovoltaic ice storage air conditioner control strategy adjustment provided by the embodiment of the invention can adjust the ice melting control strategy of the next period when the ice melting control strategy of the current period is judged to be unreasonable according to the running condition of the current period, and then adjust the photovoltaic power control strategy of the next period by combining the adjusted ice melting control strategy of the next period; in addition, when the current-period power utilization control strategy is determined to be unreasonable directly according to the current-period power generation, power utilization and power storage conditions of the photovoltaic system, the next-period photovoltaic power utilization control strategy is also adjusted. According to the scheme, whether the ice melting control strategy of the current period and the power utilization control strategy of the current period are reasonable or not is judged according to the actual production operation condition of the current period, and when the ice melting control strategy of the next period and the power utilization control strategy of the next period are unreasonable, the ice melting control strategy of the next period and the power utilization control strategy of the photovoltaic power utilization of the next period are adjusted according to unreasonable positions, so that the next period of the air conditioner can operate efficiently, and the operation cost and the energy consumption of the next period are effectively reduced.

In a fourth embodiment, the present invention provides a photovoltaic ice storage air conditioner control strategy adjustment system, including:

a processor;

a memory for executing processor-executable instructions;

the processor is configured to execute the photovoltaic ice thermal storage air conditioning control strategy adjusting method provided by the first embodiment or the second embodiment.

According to the photovoltaic ice storage air conditioner control strategy adjusting system provided by the embodiment of the invention, the executable instruction of the processor is stored through the memory, when the processor executes the executable instruction, the ice melting control strategy of the next period can be adjusted when the ice melting control strategy of the current period is judged to be unreasonable according to the running condition of the current period, and then the photovoltaic power utilization control strategy of the next period is adjusted by combining the adjusted ice melting control strategy of the next period; in addition, when the current-period power utilization control strategy is determined to be unreasonable directly according to the current-period power generation, power utilization and power storage conditions of the photovoltaic system, the next-period photovoltaic power utilization control strategy is also adjusted. According to the scheme, whether the ice melting control strategy in the current period and the power utilization control strategy in the current period are reasonable or not is judged according to the actual production operation condition in the current period, and the ice melting control strategy in the next period and the photovoltaic power utilization control strategy in the next period are adjusted according to unreasonable positions when the ice melting control strategy in the next period and the photovoltaic power utilization control strategy in the next period are unreasonable, so that the next period of the air conditioner can be operated efficiently, and the operation cost and the energy consumption of the next period are effectively reduced.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar contents in other embodiments may be referred to for the contents which are not described in detail in some embodiments.

It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.

It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer-readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.

Claims

1. A photovoltaic ice storage air conditioner control strategy adjusting method is characterized by comprising the following steps:

acquiring the current period running condition of the air conditioner and the current period power generation, power utilization and power storage conditions of the photovoltaic system;

when the current period ice melting control strategy of the air conditioner is determined to be unreasonable according to the current period running condition, adjusting the ice melting control strategy of the next period; when the current period photovoltaic power utilization control strategy is determined to be unreasonable according to the current period power generation, power utilization and power storage conditions, if the next period ice melting control strategy does not need to be adjusted, the next period photovoltaic power utilization control strategy is directly adjusted; and if the ice melting control strategy of the next period needs to be adjusted, adjusting the photovoltaic power utilization control strategy of the next period by combining the adjusted ice melting control strategy of the next period.

2. The method of claim 1, wherein: further comprising:

acquiring the ice melting and cooling capacity in hours of the load peak time period of the current cycle operation of the air conditioner;

if the operation load of any water chilling unit is below a preset operation high-efficiency area, determining that the ice melting control strategy in the current period is unreasonable; if the operation loads of all the water chilling units are in the preset operation high-efficiency area or above the preset operation high-efficiency area, acquiring the operation loads of the double-working-condition units of the air conditioner in the load peak time period;

if the operation load of any one double-working-condition unit is below a preset operation high-efficiency area, judging that the ice melting control strategy in the current period is unreasonable; and if the operation loads of all the double-working-condition units are in or above a preset operation high-efficiency area, determining that the ice melting control strategy in the current period is reasonable.

3. The method of claim 1, wherein: further comprising:

if the small ice melting and cold supplying amount is smaller than the preset maximum value, judging that the current periodic ice melting control strategy of the air conditioner is unreasonable; if the small ice melting and cold supplying amount is equal to the preset maximum value, acquiring the running load of a water chilling unit of which the air conditioner is started at the electricity price peak section and the running load of a double-working-condition unit of which the air conditioner is started at the electricity price peak section;

if the running loads of all the started water chilling units and the running loads of all the started double-working-condition units are in the corresponding preset running high-efficiency areas, determining that the ice melting control strategy in the current period is reasonable; and if the operation load of any started water chilling unit and/or the operation load of any started dual-working-condition unit is not in the corresponding preset operation high-efficiency area, determining that the current periodic ice melting control strategy is unreasonable.

4. The method of claim 1, wherein: further comprising:

if the ice-melting and cold-supplying quantity set value is larger than the load demand, determining that the ice-melting control strategy in the current period is unreasonable; if the ice-melting cooling capacity set value is larger than or equal to the load requirement, acquiring the running load of a water chilling unit of which the air conditioner is started at the electricity price level section and the running load of a double-working-condition unit of which the air conditioner is started at the electricity price level section;

if the operating loads of all the started water chilling units and the operating loads of all the started dual-working-condition units are in the corresponding preset high-efficiency areas, determining that the ice melting control strategy in the current period is reasonable; and if the operation load of any started water chilling unit and/or the operation load of any started dual-working-condition unit is not in the corresponding preset operation high-efficiency area, determining that the current periodic ice melting control strategy is unreasonable.

5. The method of claim 4, wherein: the ice-melting cold supply set value = adjustable coefficient of total ice-melting cold supply amount in the current period and total ice-melting cold supply amount in the previous day, and the adjustable coefficient is obtained according to comparison between the weather prediction parameter in the previous day and the weather prediction parameter in the current period and comparison between the load demand in the previous day and the load demand in the current period.

6. The method according to any one of claims 2-4, wherein: the adjusting of the ice melting control strategy of the next period comprises the following steps:

when the hourly ice melting and cooling capacity is smaller than the preset maximum value, increasing the hourly ice melting and cooling capacity of a load peak time period or an electricity price peak period in the next cycle ice melting control strategy to be the preset maximum value;

or when the running load of any water chilling unit in the load peak time period is not in the preset running high-efficiency area or is above the preset running high-efficiency area, adjusting the running loads of all the water chilling units in the load peak time period in the ice melting control strategy of the next period to be in the preset running high-efficiency area or above the preset running high-efficiency area;

or when the running load of any started water chilling unit or any started double-working-condition unit in the electricity price peak section is not in the corresponding preset running high-efficiency area, reducing the ice-melting cooling capacity of the electricity price peak section in the ice-melting control strategy of the next period, so that the cold chilling unit and the double-working-condition unit which are started in the next period are in the corresponding preset running high-efficiency area;

or when the set value of the ice-melting and cooling capacity in the electricity price segment is larger than the load demand, reducing the ice-melting and cooling capacity of the electricity price segment in the ice-melting control strategy of the next period, so that the ice-melting and cooling capacity in the electricity price segment of the next period is not larger than the load demand;

or when the running loads of all started water chilling units in the electricity price level section are in the corresponding preset running high-efficiency region and the running loads of all started double-working-condition units are not in the corresponding preset running high-efficiency region or are not below the corresponding preset running high-efficiency region, increasing ice-melting cooling capacity and reducing the number of the water chilling units and the double-working-condition units which need to be started in the next period of ice-melting control strategy; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, the ice melting and cold supplying amount is reduced, so that the started water chilling unit and the double-working-condition unit are in the corresponding preset operation high-efficiency areas;

or when the running loads of all started water chilling units in the electricity price level section are in the corresponding preset running high-efficiency region and the running loads of all started double-working-condition units are below the corresponding preset running high-efficiency region, increasing ice-melting cooling capacity during the electricity price level section in the ice-melting control strategy of the next period, so that the started water chilling units and the double-working-condition units run in the high-efficiency region; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, increasing the starting numbers of the water chilling unit and the double-working-condition unit;

or when the running loads of all started water chilling units in the electricity price level section are not all in the corresponding preset running high-efficiency area or are not all below the corresponding preset running high-efficiency area, increasing ice-melting cooling capacity and reducing the number of the water chilling units and the double-working-condition units which need to be started when the electricity price level section is in the ice-melting control strategy of the next period; if the ice storage amount can not meet the ice melting and cold supplying requirements at other moments in the same time period, the ice melting and cold supplying amount is reduced, so that the started water chilling unit and the double-working-condition unit are operated in the high-efficiency area;

or when the running loads of all started water chilling units in the electricity price level section are below the corresponding preset running high-efficiency region, increasing ice-melting cooling capacity in the ice-melting control strategy of the next period so as to enable the started water chilling units and the double-working-condition units to run in the high-efficiency region; and if the ice storage amount cannot meet the ice melting and cold supplying requirements at other moments in the same time period, increasing the starting numbers of the water chilling unit and the double-working-condition unit.

7. The method of claim 1, wherein: further comprising:

acquiring different time periods of electricity price and judging whether photovoltaic power generation is sufficient, wherein the different time periods of electricity price comprise an electricity price valley section, an electricity price level section and an electricity price peak section;

8. The method of claim 7, wherein: the determining whether the photovoltaic power utilization control strategy in the current period of different power rate time periods is reasonable under the condition that the photovoltaic power generation is sufficient includes:

acquiring an electric energy source stored by a storage battery in the photovoltaic system in the electricity price valley section;

if the power supply strategy of the electricity price peak section is not that the photovoltaic direct supply is used firstly and then the storage battery is used for discharging, judging that the power supply strategy of the photovoltaic power utilization control strategy in the current period at the electricity price peak section is unreasonable; if the power supply strategy is to use the photovoltaic direct supply first and then use the storage battery for discharging, obtaining a power supply strategy of a power price section;

if the power supply strategy of the electricity price level section is not that photovoltaic direct supply is firstly used, then storage battery discharging is used, and finally municipal grid direct supply is used, judging that the power supply strategy of the photovoltaic power utilization control strategy in the current period at the electricity price level section is unreasonable; and if the power supply strategy of the electricity price level section is that the photovoltaic direct supply is firstly used, then the storage battery is used for discharging, and finally the municipal grid direct supply is used, the power supply strategy of the photovoltaic power utilization control strategy in the current period in the electricity price level section is judged to be reasonable.

9. The method of claim 7, wherein: the determining whether the photovoltaic power utilization control strategy in the current period of different power rate time periods is reasonable under the condition that the photovoltaic power generation is insufficient comprises the following steps:

if the power supply strategy of the electricity price peak section is not that the photovoltaic direct supply is firstly used, then the storage battery is used for discharging, and finally the urban network direct supply is used, the power supply strategy of the photovoltaic power utilization control strategy in the current period at the electricity price peak section is judged to be unreasonable; if the power supply strategy is that photovoltaic direct supply is firstly used, then storage batteries are used for discharging, and finally urban network direct supply is used, the power supply strategy of the electricity price level section is obtained;

if the power supply strategy of the electricity price level section is not that the photovoltaic direct supply is used firstly and then the storage battery is used for discharging, judging that the power supply strategy of the photovoltaic power utilization control strategy in the current period in the electricity price level section is unreasonable; and if the power supply strategy of the electricity price level section is to use the photovoltaic direct supply first and then use the storage battery for discharging, judging that the power supply strategy of the photovoltaic power utilization control strategy in the current period in the electricity price level section is reasonable.

10. The method of claim 7, wherein: judging whether photovoltaic power generation is sufficient includes:

11. The utility model provides a photovoltaic ice cold-storage air conditioner control strategy adjusting device which characterized in that includes:

the next period strategy adjusting module is used for adjusting the ice melting control strategy of the next period when the fact that the ice melting control strategy of the air conditioner in the current period is unreasonable is determined according to the running condition of the current period; when the current period photovoltaic power utilization control strategy is determined to be unreasonable according to the current period power generation, power utilization and power storage conditions, if the next period ice melting control strategy does not need to be adjusted, the next period photovoltaic power utilization control strategy is directly adjusted; and if the ice melting control strategy of the next period needs to be adjusted, adjusting the photovoltaic power utilization control strategy of the next period by combining the adjusted ice melting control strategy of the next period.

12. The utility model provides a photovoltaic ice cold-storage air conditioner control strategy adjustment system which characterized in that includes:

a processor;

a memory for executing the processor-executable instructions;

the processor is configured to perform the method of any one of claims 1-10.