CN117273413A - Overhauling and arranging method for water-wind-solar-storage-base-regulated power supply unit - Google Patents
Overhauling and arranging method for water-wind-solar-storage-base-regulated power supply unit Download PDFInfo
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Abstract
The invention provides a maintenance arrangement method for a water-wind-solar-storage-base-station-based regulating power supply unit, and belongs to the technical field of multi-energy complementary integrated base power production simulation. The invention is divided into a first step of theoretical overhaul capacity space calculation and a second step of overhaul arrangement of a power station unit; the first-step theoretical overhaul capacity space calculation is to calculate a hydropower station theoretical overhaul capacity space and a pumping and accumulating theoretical overhaul capacity space, the second-step power station unit overhaul arrangement is based on the result of the first-step calculation and combines the actual number of units and unit capacity to arrange, and the second-step power station unit overhaul arrangement and pumping and accumulating power station unit overhaul arrangement are divided. The invention fills the blank of the current research and method, fully considers the exertion of the output adjustment capability and the pumping and storage adjustment capability of the hydropower, has clear analysis and calculation formula and clear thought method steps, and related designers can correctly and reasonably arrange the overhaul of the unit according to the method.
Description
Technical Field
The invention belongs to the technical field of multi-energy complementary integrated foundation power production simulation, and particularly relates to a maintenance arrangement method for a water-wind-solar energy storage foundation regulation power supply unit.
Background
The water, wind and solar energy storage integrated power production simulation is an important content of a water, wind and solar energy storage integrated planning design and a specific power supply design, and is very important for integrated power supply configuration, power station necessity and scale demonstration. When the production simulation of the water, wind and solar energy storage integrated base electricity is carried out, two types of adjusting power supply units of the base water, electricity and water pumping energy storage power stations are required to be overhauled, the overhauled arrangement directly influences the expected water and electricity output and the maximum pumping and storage capacity during the production simulation, the method is a work which must be completed before the production simulation, and whether the overhauled arrangement reasonably directly influences the electric quantity index of the production simulation.
At present, few unit maintenance arrangement calculation researches aiming at a water, wind and solar energy storage integrated base regulating power supply exist.
Disclosure of Invention
According to the invention, by combining the characteristic of integration complementation of water, wind and solar energy storage, from the perspective of exerting water and electricity regulation capability and exerting pumping and storage regulation capability, a method for overhauling and arranging the unit of the water, wind and solar energy storage base regulation power supply is provided, corresponding arrangement strategies and methods are clear, overhauling and arranging are reasonable and proper, and efficiency of overhauling and arranging the unit can be improved.
The technical scheme of the invention is as follows: the maintenance scheduling method of the water-wind-solar energy storage base regulation power supply unit comprises the steps of first-step theoretical maintenance capacity space calculation and second-step power station unit maintenance scheduling; the first step of theoretical overhaul capacity space calculation comprises calculation of a water and electricity theoretical overhaul capacity space of each month and a pumping and storage theoretical overhaul capacity space of each month; the second-step power station unit overhaul arrangement comprises the step of arranging one unit overhaul of the hydropower station with the minimum average output rate in the maximum month of the hydropower station theoretical overhaul capacity space each time until all hydropower station units are overhauled, and the step of arranging one pumping and storing power station unit overhaul in the maximum month of the pumping and storing theoretical overhaul capacity space each time until all pumping and storing power station units are overhauled.
Furthermore, the calculation of the theoretical overhaul capacity space of the hydropower stations in each month is specifically as follows:
(1) calculating the maximum overhaul space of the hydropower station: after each month of overhaul, the residual capacity of the month cannot be lower than the average water output of the month, and the method is as follows:
；
wherein: n (N) h,rmax,i The maximum overhaul space for the hydropower station in the ith month is MW; n (N) h,in The capacity of the hydropower station is the sum of the installed capacities of all hydropower stations in the base, and MW; n (N) h,ave,i The average power output of the hydropower station in the base is the sum of the average power output of all hydropower stations in the base, MW;
(2) assuming calculation of the average hydropower output and the remaining hydropower capacity: for the annual assumption of a hydropower average output, namely the ratio of the hydropower average output to the hydropower residual capacity, the hydropower residual capacity of each month is calculated, and the specific steps are as follows:
；
wherein: n (N) h,s,i The remaining capacity of the hydropower station in the ith month is MW; alpha is the assumed average power output of the hydropower;
(3) calculating the theoretical overhaul capacity space of water and electricity in each month: calculating the theoretical overhaul capacity space of each month of hydropower according to the total installed capacity of hydropower and the residual capacity of each month of hydropower, wherein the theoretical overhaul capacity space of each month of hydropower cannot exceed the maximum overhaul space of each month of hydropower, and the method comprises the following specific steps:
；
wherein: n (N) h,r,i The water and electricity theory maintenance capacity space is the ith month, MW; when the alpha value makes the sum of the theoretical overhaul capacity spaces of the hydropower stations in each month equal to the capacity of the hydropower total assembly machine, namelyWhen the water and electricity theory overhaul capacity space is obtained, the water and electricity theory overhaul capacity space is the correct result; if the alpha value cannot make the sum of the theoretical overhaul capacity spaces of the hydropower stations in each month equal to the capacity of the hydropower total assembly machine, the alpha value is re-assumed to be calculated until the total hydropower stations meet the requirement +.>The method comprises the steps of carrying out a first treatment on the surface of the The final value of alpha is calculated by a dichotomy method with 0 as the minimum value and 1 as the maximum value.
Furthermore, the maintenance and arrangement steps of the hydropower station unit are as follows:
(1) the hydropower unit maintenance arrangement is carried out by selecting the maximum month of hydropower theoretical maintenance capacity space, N h,r,imax The unit of the maximum value of the hydropower theoretical overhaul capacity space of each month is MW, and imax is the month number of the maximum value of the hydropower theoretical overhaul capacity space of each month;
(2) the hydropower station with the smallest average monthly hydropower output rate is selected from all hydropower stations, a unit is arranged for overhauling the hydropower station, the overhauling capacity is the single unit capacity of the hydropower station, and the average monthly hydropower station output rate is the ratio of the average output to the installed capacity before overhauling, and the method comprises the following specific steps:
；
wherein: alpha j,imax Maximum maintenance capacity space for hydropower theoryAverage output rate of month j hydropower station; n (N) j,h,ave,imax Average output, MW, of a j-th hydropower station with the largest hydropower theoretical overhaul capacity space; n (N) j,h,in The installed capacity of the j-th hydropower station, MW;
(3) after a hydropower station with the minimum average monthly output rate is selected to arrange a unit for maintenance, the theoretical maintenance space of the month and the average monthly output rate of the maintenance hydropower station in the month are updated, and the method specifically comprises the following steps:
；
wherein: n (N) a,h,r,imax In order to arrange the theoretical overhaul capacity space of the month after overhaul of a unit, MW is updated gradually according to the unit arrangement; alpha a,j,imax Arranging a month average output rate of a unit after overhaul for a jth hydropower station; n (N) j,s,imax The remaining capacity, MW, of the jth hydropower station in the month before the maintenance is scheduled for the month unit, if the hydropower station unit is not scheduled for maintenance in the month before the remaining capacity, MW, is N j,h,in ，MW；N j,h,unit The capacity of a single unit of the j-th hydropower station;
(4) further placing the theoretical overhaul capacity space of the month after overhaul of one unit into all months for reordering, and placing the average output rate of hydropower stations after overhaul of the unit into all hydropower stations for reordering so as to enter a link of overhaul arrangement of the next unit, and repeating the steps (1) and (3) to arrange overhaul of the next unit; and continuously repeating the steps until all hydropower station units are overhauled and arranged.
Furthermore, the calculation of the pumping and accumulating theoretical overhaul capacity space is specifically as follows:
(1) calculating the average water-wind power output: the average wind-light output of each month is the sum of the average output of the water, the wind power and the photovoltaic of the month, and the method is as follows:
；
wherein: n (N) all,ave,i The power is the average power output of the ith month of water, wind, light and month, MW; n (N) w,ave,i The average output of wind power in the ith month is MW; n (N) s,ave,i Photovoltaic average output in the ith month, MW;
(2) assuming calculation of a pumping and accumulating capacity coefficient and a pumping and accumulating residual capacity: assuming a pumping and accumulating capacity coefficient, namely the ratio of pumping and accumulating residual capacity to water-wind-solar average output, calculating the pumping and accumulating residual capacity of each month, wherein the pumping and accumulating residual capacity is as follows:
；
wherein: n (N) p,s,i Drawing and accumulating the residual capacity for the ith month, and MW; beta is a hypothetical extraction and storage capacity coefficient; n (N) p,in The capacity of the pumping and accumulating total assembly machine is the sum of the installed capacities of all pumping and accumulating stations in the base, MW;
(3) and (3) calculating a pumping and accumulating theoretical overhaul capacity space: according to the capacity of the pumping and accumulating total assembly machine and the residual capacity of pumping and accumulating in each month, calculating the theoretical overhaul capacity space of pumping and accumulating in each month, wherein the theoretical overhaul capacity space is specifically as follows:
；
wherein: n (N) p,r,i Theoretical overhaul capacity space is pumped and stored for the ith month, MW; when the beta value makes the sum of the theoretical overhaul capacity space of the pumping and accumulating machine in each month equal to the capacity of the pumping and accumulating general assembly machine, namelyWhen the drawing and accumulating theoretical overhaul capacity space is obtained as a correct result; if the beta value cannot make the sum of the theoretical overhaul capacity spaces of the pumping and accumulating tanks equal to the capacity of the pumping and accumulating total assembling machine, the beta value is re-assumed to calculate until +.>The method comprises the steps of carrying out a first treatment on the surface of the And calculating the final value of beta by adopting a dichotomy method by taking the ratio of the capacity of the pumping and accumulating total assembly machine to the maximum lunar water wind-solar average output as a lower limit and taking the ratio of the capacity of the pumping and accumulating total assembly machine to the minimum lunar water wind-solar average output as an upper limit.
Furthermore, the maintenance and arrangement steps of the pumping and storage station unit are as follows:
(1) the maximum month of the overhaul capacity space of the pumping and storage theory is selected to carry out the overhaul arrangement of the pumping and storage unit, N p,r,imax The unit of the maximum value of the theoretical overhaul capacity space of each month is MW, and imax is the month number of the maximum value of the theoretical overhaul capacity space of each month;
(2) any unit of the pumping and storing station is arranged for maintenance, and the maintenance capacity is the single unit capacity N of the pumping and storing station j,p,unit ，MW；
(3) After the maintenance is finished, the theoretical maintenance capacity space of the pumping and storage of the month is further updated:
；
wherein: n (N) a,p,r,imax In order to arrange the theoretical overhaul capacity space of the month pumping storage after the overhaul of one unit, MW is updated gradually according to the unit arrangement;
(4) further placing the month pumping storage theoretical overhaul capacity space for arranging the next unit into all months for reordering, repeating the steps (1) - (3), and arranging the next unit for overhaul; and continuously repeating the steps until all the pumping and storing power station units are overhauled and arranged.
Furthermore, when the pumping and storing station unit is overhauled and arranged, if the pumping and storing stations are arranged, the pumping and storing stations are arranged alternately.
Advantageous effects
The overhaul scheduling method for the water-wind-solar-storage-base regulating power supply unit makes up the blank of the current research and method, fully considers the exertion of the output regulation capability and the drawing-storage regulation capability of water and electricity, has clear analysis and calculation formula and clear thought method steps, can correctly and reasonably arrange the overhaul of the unit according to the method by related designers without excessive expertise, has reasonable and proper overhaul scheduling result, and is beneficial to integrated complementary production simulation of water-wind-solar-storage; and under the hot tide of the current clean energy base planning design, the method has great popularization value.
Drawings
FIG. 1 is a simplified illustration of the general idea of the invention;
FIG. 2 is a schematic illustration of a hydroelectric generating set service arrangement;
FIG. 3 is a schematic illustration of a pumped storage power plant unit service arrangement.
Detailed Description
An embodiment, a water-wind-solar energy storage base regulation power supply unit maintenance arrangement method.
The method is shown in fig. 1, which is a schematic idea and steps, specifically: firstly, on the basis of the water and electricity runoff regulating result, an average output rate is assumed for the whole year, so that the sum of water and electricity theoretical overhaul capacity of each month is equal to the capacity of a water and electricity total assembly machine, and a water and electricity theoretical overhaul capacity space of each month is obtained at the moment; similarly, from the angle of adjusting the water wind and light output, the ratio of the residual capacity of the pumping storage to the average water wind and light output is assumed to ensure that the sum of theoretical overhaul capacity of the pumping storage in each month is equal to the installed capacity of the pumping storage, and then the theoretical overhaul capacity space of the pumping storage in each month is obtained; and then combine average output rate, number of units and unit capacity of each hydropower station in each month, arrange hydropower station of minimum average output rate of hydropower station overhaul a unit in the biggest month of hydropower station theoretical overhaul capacity space each time, until all hydropower station units overhaul and arrange; and for the pumping and accumulating, according to the number of units and the unit capacity, arranging any unit for maintenance every time in the maximum month of the pumping and accumulating theoretical maintenance capacity space, and for the plurality of pumping and accumulating stations, arranging among the plurality of pumping and accumulating stations in a rotating way. In general, the present invention is divided into two steps shown in fig. 1, namely theoretical service capacity space calculation and power plant unit service arrangement.
The scheme is applied to a certain water light storage base, wherein the water light storage base comprises 6-step hydropower stations, 2 pumping and accumulating power stations and photovoltaics, the installed capacity and the number of units of the hydropower stations and pumping and accumulating are shown in a table 1, and the average output of photovoltaics of the hydropower stations in a certain horizontal year are shown in a table 2.
TABLE 1A Water-light storage base Power supply installation capacity and units
TABLE 2 average annual water output and photovoltaic average output for certain water and light storage base
And the method and the situation of the water-light storage base are combined to explain the overhaul arrangement of the water-light storage base unit.
First step, theoretical overhaul capacity space calculation
And calculating the theoretical overhaul capacity space of the hydropower and the pumping storage in each month according to the hydropower and the pumping storage respectively.
(1) And (3) calculating a hydropower theoretical overhaul capacity space: the hydropower stations are integrated and then are integrally calculated, and the specific calculation steps and formulas are as follows:
(1) calculating the maximum overhaul space of the hydropower station: after each month of overhaul, the residual capacity of the month cannot be lower than the average water output of the month, and the method is as follows:
；
wherein: n (N) h,rmax,i The maximum overhaul space for the hydropower station in the ith month is MW; n (N) h,in The capacity of the hydropower station is the sum of the installed capacities of all hydropower stations in the base, and MW; n (N) h,ave,i The average power output of the hydropower station in the base is the sum of the average power output of all hydropower stations in the base, MW;
(2) assuming calculation of the average hydropower output and the remaining hydropower capacity: for the annual assumption of a hydropower average output, namely the ratio of the hydropower average output to the hydropower residual capacity, the hydropower residual capacity of each month is calculated, and the specific steps are as follows:
；
wherein: n (N) h,s,i The remaining capacity of the hydropower station in the ith month is MW; alpha is the assumed average power output of the hydropower;
(3) calculating the theoretical overhaul capacity space of water and electricity in each month: calculating the theoretical overhaul capacity space of each month of hydropower according to the total installed capacity of hydropower and the residual capacity of each month of hydropower, wherein the theoretical overhaul capacity space of each month of hydropower cannot exceed the maximum overhaul space of each month of hydropower, and the method comprises the following specific steps:
；
wherein: n (N) h,r,i The water and electricity theory maintenance capacity space is the ith month, MW; when the alpha value makes the sum of the theoretical overhaul capacity spaces of the hydropower stations in each month equal to the capacity of the hydropower total assembly machine, namelyWhen the water and electricity theory overhaul capacity space is obtained, the water and electricity theory overhaul capacity space is the correct result; if the alpha value cannot make the sum of the theoretical overhaul capacity spaces of the hydropower stations in each month equal to the capacity of the hydropower total assembly machine, the alpha value is re-assumed to be calculated until the total hydropower stations meet the requirement +.>The method comprises the steps of carrying out a first treatment on the surface of the The final value of alpha is calculated by a dichotomy method with 0 as the minimum value and 1 as the maximum value.
For hydropower at the example hydropower-light storage site, when α= 0.3367, the above condition is satisfied, and the theoretical overhaul capacity space of the hydropower for each month is obtained at this time as shown in fig. 2.
(2) And (3) calculating the maintenance capacity space of the pumping and storage theory: the pumping and accumulating is mainly used for adjusting the water-wind power output, and is calculated based on the average output of water power, wind power and photovoltaic month, and the method comprises the following steps of:
(1) and (3) calculating the average water-wind power output: the average water-wind power output is the sum of the average water power output, the average wind power output and the average photovoltaic power output, and is specifically as follows:
；
wherein: n (N) all,ave,i The power is the average power output of the ith month of water, wind, light and month, MW; n (N) w,ave,i The average output of wind power in the ith month is MW; n (N) s,ave,i Photovoltaic average output in the ith month, MW; for the present example Shui Guangchu base,the wind power output is not considered;
(2) assuming calculation of a pumping and accumulating capacity coefficient and a pumping and accumulating residual capacity: assuming a pumping and accumulating capacity coefficient, namely the ratio of pumping and accumulating residual capacity to water-wind-solar average output, calculating the pumping and accumulating residual capacity of each month, wherein the pumping and accumulating residual capacity is as follows:
；
wherein: n (N) p,s,i Drawing and accumulating the residual capacity for the ith month, and MW; beta is a hypothetical extraction and storage capacity coefficient; n (N) p,in The capacity of the pumping and accumulating total assembly machine is the sum of the installed capacities of all pumping and accumulating stations in the base, MW;
(3) and (3) calculating a pumping and accumulating theoretical overhaul capacity space: according to the capacity of the pumping and accumulating total assembly machine and the residual capacity of pumping and accumulating in each month, calculating the theoretical overhaul capacity space of pumping and accumulating in each month, wherein the theoretical overhaul capacity space is specifically as follows:
；
wherein: n (N) p,r,i Theoretical overhaul capacity space is pumped and stored for the ith month, MW; when the beta value makes the sum of the theoretical overhaul capacity space of the pumping and accumulating machine in each month equal to the capacity of the pumping and accumulating general assembly machine, namelyWhen the drawing and accumulating theoretical overhaul capacity space is obtained as a correct result; if the beta value cannot make the sum of the theoretical overhaul capacity spaces of the pumping and accumulating tanks equal to the capacity of the pumping and accumulating total assembling machine, the beta value is re-assumed to calculate until +.>The method comprises the steps of carrying out a first treatment on the surface of the And calculating the final value of beta by adopting a dichotomy method by taking the ratio of the capacity of the pumping and accumulating total assembly machine to the maximum lunar water wind-solar average output as a lower limit and taking the ratio of the capacity of the pumping and accumulating total assembly machine to the minimum lunar water wind-solar average output as an upper limit.
For the drawing and storage of the Shui Guangchu base of this example, when β= 0.2904, the above condition is satisfied, and at this time, the theoretical maintenance capacity space of drawing and storage for each month is obtained as shown in fig. 3.
Second step, power station unit maintenance arrangement
The power station unit overhaul arrangement is based on the theoretical overhaul capacity space of each month calculated in the first step, and is combined with the actual number of units and the unit capacity to arrange, so that the actual overhaul capacity after arrangement is basically similar to the theoretical overhaul capacity space of each month, and the power station unit overhaul arrangement and the pumping and storing power station unit overhaul arrangement are specifically divided.
(1) Hydropower station unit overhauling arrangement: when the hydropower station unit is overhauled and arranged, one unit is overhauled each time, and hydropower stations with small average hydropower output rate are preferentially arranged for unit overhauling during the arrangement, and the concrete steps are as follows:
(1) selecting month N with maximum water and electricity theory overhaul capacity space h,r,imax Performing unit maintenance arrangement, N h,r,imax The unit of the maximum value of the theoretical overhaul capacity space of the hydropower station in each month is MW, and imax is the number of the month in which the maximum value of the theoretical overhaul capacity space is located;
(2) selecting the hydropower station with the minimum average output rate of the hydropower station in all hydropower stations, arranging a unit for overhauling the hydropower station, wherein the overhauling capacity is the single unit capacity N of the hydropower station j,h,unit Wherein the average output rate before overhaul is the ratio of the average output to the installed capacity, and the method is as follows:
；
wherein: alpha j,imax The average output rate of the j-th hydropower station with the largest month of the hydropower theoretical overhaul capacity space is calculated; n (N) j,h,ave,imax Average output, MW, of a j-th hydropower station with the largest hydropower theoretical overhaul capacity space; n (N) j,h,in The installed capacity of the j-th hydropower station, MW;
(3) a hydropower station with the smallest average monthly output rate is selected to arrange a unit for maintenance, and the theoretical maintenance space of the month and the average monthly output rate of the maintenance hydropower station in the month are updated, specifically as follows:
；
wherein: n (N) a,h,r,imax In order to arrange the theoretical overhaul capacity space of the month after overhaul of a unit, MW is updated gradually according to the unit arrangement; alpha a,j,imax Arranging a month average output rate of a unit after overhaul for a jth hydropower station; n (N) j,s,imax The remaining capacity, MW, of the jth hydropower station in the month before the maintenance is scheduled for the month unit, if the hydropower station unit is not scheduled for maintenance in the month before the remaining capacity, MW, is N j,h,in ；N j,h,unit The capacity of a single unit of the j-th hydropower station, MW.
(4) And (3) further placing the month theoretical overhaul capacity space of the arranged unit into all months for reordering, placing the average output rate of the hydropower stations after the overhaul unit into all hydropower stations for reordering, and then entering a link of overhaul arrangement of the next unit, repeating the steps (1) and (3), namely reselecting the month with the largest theoretical overhaul capacity space, selecting the hydropower station with the smallest average output rate in the month for arranging one unit for overhaul, updating the month theoretical overhaul capacity space and the month average output rate of the hydropower station, and finally, placing the hydropower stations into all the theoretical overhaul capacity space and the month average output rate of the hydropower station for reordering. And continuously repeating the steps until all the units of all the hydropower stations are arranged to be overhauled. As shown in fig. 2, the Shui Guangchu base is an example of the arrangement of maintenance of each hydropower station.
(2) And (3) overhauling and arranging a pumping and storing power station unit: when the pumping and storage units are overhauled and arranged, one unit is arranged each time, each time the pumping and storage units are arranged in the period of maximum overhauling capacity in the pumping and storage theory, for a plurality of pumping and storage stations, the pumping and storage units are alternately arranged, for example, two pumping and storage power stations are arranged, wherein the first pumping and storage power station is one unit, and the second pumping and storage power station is one unit. The method comprises the following specific steps:
(1) the maximum month of the overhaul capacity space of the pumping and storage theory is selected to carry out the overhaul arrangement of the pumping and storage unit, N p,r,imax The unit of the maximum value of the theoretical overhaul capacity space of each month is MW, and imax is the month number of the maximum value of the theoretical overhaul capacity space of each month;
(2) any unit of the pumping and storing station is arranged for overhaulingThe capacity is the single machine capacity N of the pumping and accumulating power station j,p,unit ，MW；
(3) After the maintenance is finished, the theoretical maintenance capacity space of the pumping and storage of the month is further updated:
；
wherein: n (N) a,p,r,imax In order to arrange the theoretical overhaul capacity space of the month pumping storage after the overhaul of one unit, MW is updated gradually according to the unit arrangement;
(4) further placing the month pumping storage theoretical overhaul capacity space for arranging the next unit into all months for reordering, repeating the steps (1) - (3), and arranging the next unit for overhaul; and continuously repeating the steps until all the pumping and storing power station units are overhauled and arranged.
And continuously repeating the steps until all units for pumping and storing are all arranged for maintenance. As shown in fig. 3, the maintenance arrangement of each pumped storage power station set is the Shui Guangchu base of the example.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. A water-wind-solar energy storage base regulation power supply unit overhauling and arranging method is characterized by comprising the following steps of: the method comprises the steps of calculating theoretical overhaul capacity space in the first step and overhauling and arranging a power station unit in the second step; the first step of theoretical overhaul capacity space calculation comprises calculation of a water and electricity theoretical overhaul capacity space of each month and a pumping and storage theoretical overhaul capacity space of each month; the second-step power station unit overhaul arrangement comprises the step of arranging one unit overhaul of the hydropower station with the minimum average output rate in the maximum month of the hydropower station theoretical overhaul capacity space each time until all hydropower station units are overhauled, and the step of arranging one pumping and storing power station unit overhaul in the maximum month of the pumping and storing theoretical overhaul capacity space each time until all pumping and storing power station units are overhauled.
2. The method for overhauling and arranging a water-wind-solar-storage-base-regulated power supply unit according to claim 1, wherein the method comprises the following steps of: the calculation of the theoretical overhaul capacity space of the hydropower stations in each month is specifically as follows:
(1) calculating the maximum overhaul space of the hydropower station: after each month of overhaul, the residual capacity of the month cannot be lower than the average water output of the month, and the method is as follows:
；
wherein: n (N) h,rmax,i The maximum overhaul space for the hydropower station in the ith month is MW; n (N) h,in The capacity of the hydropower station is the sum of the installed capacities of all hydropower stations in the base, and MW; n (N) h,ave,i The average power output of the hydropower station in the base is the sum of the average power output of all hydropower stations in the base, MW;
(2) assuming calculation of the average hydropower output and the remaining hydropower capacity: for the annual assumption of a hydropower average output, namely the ratio of the hydropower average output to the hydropower residual capacity, the hydropower residual capacity of each month is calculated, and the specific steps are as follows:
；
wherein: n (N) h,s,i The remaining capacity of the hydropower station in the ith month is MW; alpha is the assumed average power output of the hydropower;
(3) calculating the theoretical overhaul capacity space of water and electricity in each month: calculating the theoretical overhaul capacity space of each month of hydropower according to the total installed capacity of hydropower and the residual capacity of each month of hydropower, wherein the theoretical overhaul capacity space of each month of hydropower cannot exceed the maximum overhaul space of each month of hydropower, and the method comprises the following specific steps:
；
wherein: n (N) h,r,i The water and electricity theory maintenance capacity space is the ith month, MW; when the alpha value makes the sum of the theoretical overhaul capacity spaces of the hydropower stations in each month equal to the capacity of the hydropower total assembly machine, namelyWhen the water and electricity theory overhaul capacity space is obtained, the water and electricity theory overhaul capacity space is the correct result; if the alpha value cannot make the sum of the theoretical overhaul capacity spaces of the hydropower stations in each month equal to the capacity of the hydropower total assembly machine, the alpha value is re-assumed to be calculated until the total hydropower stations meet the requirement +.>The method comprises the steps of carrying out a first treatment on the surface of the The final value of alpha is calculated by a dichotomy method with 0 as the minimum value and 1 as the maximum value.
3. The method for overhauling and arranging a water-wind-solar-storage-base-regulated power supply unit according to claim 2, wherein the method comprises the following steps of: the maintenance and arrangement steps of the hydropower station unit are as follows:
(1) the hydropower unit maintenance arrangement is carried out by selecting the maximum month of hydropower theoretical maintenance capacity space, N h,r,imax The unit of the maximum value of the hydropower theoretical overhaul capacity space of each month is MW, and imax is the month number of the maximum value of the hydropower theoretical overhaul capacity space of each month;
(2) the hydropower station with the smallest average monthly hydropower output rate is selected from all hydropower stations, a unit is arranged for overhauling the hydropower station, the overhauling capacity is the single unit capacity of the hydropower station, and the average monthly hydropower station output rate is the ratio of the average output to the installed capacity before overhauling, and the method comprises the following specific steps:
；
wherein: alpha j,imax The average output rate of the j-th hydropower station with the largest month of the hydropower theoretical overhaul capacity space is calculated; n (N) j,h,ave,imax Average output, MW, of a j-th hydropower station with the largest hydropower theoretical overhaul capacity space; n (N) j,h,in The installed capacity of the j-th hydropower station, MW;
(3) after a hydropower station with the minimum average monthly output rate is selected to arrange a unit for maintenance, the theoretical maintenance space of the month and the average monthly output rate of the maintenance hydropower station in the month are updated, and the method specifically comprises the following steps:
；
wherein: n (N) a,h,r,imax In order to arrange the theoretical overhaul capacity space of the month after overhaul of a unit, MW is updated gradually according to the unit arrangement; alpha a,j,imax Arranging a month average output rate of a unit after overhaul for a jth hydropower station; n (N) j,s,imax The remaining capacity, MW, of the jth hydropower station in the month before the maintenance is scheduled for the month unit, if the hydropower station unit is not scheduled for maintenance in the month before the remaining capacity, MW, is N j,h,in ，MW；N j,h,unit The capacity of a single unit of the j-th hydropower station;
(4) further placing the theoretical overhaul capacity space of the month after overhaul of one unit into all months for reordering, and placing the average output rate of hydropower stations after overhaul of the unit into all hydropower stations for reordering so as to enter a link of overhaul arrangement of the next unit, and repeating the steps (1) and (3) to arrange overhaul of the next unit; and continuously repeating the steps until all hydropower station units are overhauled and arranged.
4. The method for overhauling and arranging a water-wind-solar-storage-base-regulated power supply unit according to claim 1, wherein the method comprises the following steps of: the calculation of the pumping and storage theoretical overhaul capacity space is specifically as follows:
(1) calculating the average water-wind power output: the average wind-light output of each month is the sum of the average output of the water, the wind power and the photovoltaic of the month, and the method is as follows:
；
wherein: n (N) all,ave,i The power is the average power output of the ith month of water, wind, light and month, MW; n (N) w,ave,i The average output of wind power in the ith month is MW; n (N) s,ave,i Photovoltaic average output in the ith month, MW;
(2) assuming calculation of a pumping and accumulating capacity coefficient and a pumping and accumulating residual capacity: assuming a pumping and accumulating capacity coefficient, namely the ratio of pumping and accumulating residual capacity to water-wind-solar average output, calculating the pumping and accumulating residual capacity of each month, wherein the pumping and accumulating residual capacity is as follows:
；
wherein: n (N) p,s,i Drawing and accumulating the residual capacity for the ith month, and MW; beta is a hypothetical extraction and storage capacity coefficient; n (N) p,in The capacity of the pumping and accumulating total assembly machine is the sum of the installed capacities of all pumping and accumulating stations in the base, MW;
(3) and (3) calculating a pumping and accumulating theoretical overhaul capacity space: according to the capacity of the pumping and accumulating total assembly machine and the residual capacity of pumping and accumulating in each month, calculating the theoretical overhaul capacity space of pumping and accumulating in each month, wherein the theoretical overhaul capacity space is specifically as follows:
；
wherein: n (N) p,r,i Theoretical overhaul capacity space is pumped and stored for the ith month, MW; when the beta value makes the sum of the theoretical overhaul capacity space of the pumping and accumulating machine in each month equal to the capacity of the pumping and accumulating general assembly machine, namelyWhen the drawing and accumulating theoretical overhaul capacity space is obtained as a correct result; if the beta value cannot make the sum of the theoretical overhaul capacity spaces of the pumping and accumulating tanks equal to the capacity of the pumping and accumulating total assembling machine, the beta value is re-assumed to calculate until +.>The method comprises the steps of carrying out a first treatment on the surface of the And calculating the final value of beta by adopting a dichotomy method by taking the ratio of the capacity of the pumping and accumulating total assembly machine to the maximum lunar water wind-solar average output as a lower limit and taking the ratio of the capacity of the pumping and accumulating total assembly machine to the minimum lunar water wind-solar average output as an upper limit.
5. The method for overhauling and arranging a water-wind-solar-storage-base-regulated power supply unit according to claim 4, wherein the method comprises the following steps of: the maintenance and arrangement steps of the pumping and storing power station unit are as follows:
(1) the maximum month of the overhaul capacity space of the pumping and storage theory is selected to carry out the overhaul arrangement of the pumping and storage unit, N p,r,imax The unit of the maximum value of the theoretical overhaul capacity space of each month is MW, and imax is the month number of the maximum value of the theoretical overhaul capacity space of each month;
(2) any unit of the pumping and storing station is arranged for maintenance, and the maintenance capacity is the single unit capacity N of the pumping and storing station j,p,unit ，MW；
(3) After the maintenance is finished, the theoretical maintenance capacity space of the pumping and storage of the month is further updated:
；
wherein: n (N) a,p,r,imax In order to arrange the theoretical overhaul capacity space of the month pumping storage after the overhaul of one unit, MW is updated gradually according to the unit arrangement;
(4) further placing the month pumping storage theoretical overhaul capacity space for arranging the next unit into all months for reordering, repeating the steps (1) - (3), and arranging the next unit for overhaul; and continuously repeating the steps until all the pumping and storing power station units are overhauled and arranged.
6. The method for overhauling and arranging a water-wind-solar-storage-base-regulated power supply unit according to claim 5, wherein the method comprises the following steps of: when the pumping and storing station unit is overhauled and arranged, if the pumping and storing stations are arranged, the pumping and storing stations are arranged alternately.
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