CN110619439A - Method and device for measuring and calculating power and electric quantity balance - Google Patents
Method and device for measuring and calculating power and electric quantity balance Download PDFInfo
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Abstract
The invention relates to a method and a device for measuring and calculating the balance of electric power and electric quantity, which are used for determining the single electricity generating quantity and the single adjustable output of each type of power supply based on a preset evaluation rule; determining the power generation amount of the whole network according to a preset first summation rule and the single power generation amount of each type of power supply; determining electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity; obtaining the adjustable output of the whole network according to a preset second summation rule and the single adjustable output of each type of power supply; and determining the power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load, so that the power and electric quantity balance measurement and calculation of any type of power supply in the power supply of the whole network are realized. By adopting the technical scheme of the invention, the application range of the balance measurement of the electric power and the electric quantity of the whole network power supply can be enlarged, and the reliability of the measurement result is improved.
Description
Technical Field
The invention relates to the technical field of power system scheduling, in particular to a method and a device for measuring and calculating power and electric quantity balance.
Background
The medium-and-long-term power and electric quantity balance measurement is important basic work of power system operation method arrangement, and is used for evaluating monthly power and electric quantity adequacy in the future according to basic data such as different types of power supply generability, load prediction, power transmission and reception plans and the like so as to guide other production business processes such as power transmission and transformation equipment maintenance and the like and optimize a production business implementation plan.
The traditional power grid mainly uses traditional power sources such as thermal power, hydropower and the like, and has high operation reliability and strong power controllability. When the power-electricity balance is evaluated, the monthly maximum power generation amount and the daily average adjustable power are often used as evaluation indexes. And meanwhile, only two factors, namely unit overhaul and unit limitation, are usually considered in evaluation, wherein the unit overhaul refers to a unit overhaul plan which is arranged according to unit overhaul wishes in combination with power supply and power transmission and transformation equipment overhaul requirements, the unit limitation refers to the condition that the maximum adjustable output of an operating unit is lower than the installed range due to the influence of factors such as equipment defects, network blockage and the like, and the equivalent judgment is generally carried out according to the historical synchronous average level of the whole network. The above evaluation index can be expressed by formulas (1) and (2):
in the formulas (1) and (2),is in a conventional determination modemThe monthly maximum power generation amount of the monthly whole-network generator set,is in a conventional determination modemThe output of the generator set of the whole monthly network can be adjusted every day;NDthe number of days of the month;NGthe number of the whole network units is;for generating setsgInstalled capacity of (d);for generating setsgWhen the maintenance state of the unit is 0-1 variable, the unit is indicated to be indThe maintenance work is not arranged in the day, the machine can be started and connected to the grid for power generation, and when the value is 1, the power failure maintenance work of the machine set exists in the day;is as followsmLoad rate of the equivalent daily generated energy per month,First, themThe equivalent limited proportion of the month can be replaced by the average level of the whole network in the same period of history;in order to average the overhaul capacity of the generator set in the same month and day,can be calculated from equation (3):
when the new energy power supply is installed less and the power supply is mainly of traditional power supply types such as thermal power, hydroelectric power and the like, the measuring and calculating method can meet the actual operation requirement due to the fact that the traditional power supply is high in power output controllability and operation reliability. However, with the large amount of new energy power sources such as wind power and photovoltaic power grid connection and the increasing proportion of the new energy power sources in the power grid, the deterministic evaluation method faces challenges. The fundamental reason is that the output of new energy power supplies such as wind power and photovoltaic is influenced by weather, and annual weather prediction data in medium-long term prediction hardly support the prediction requirement of the high-precision new energy power supply, so that the measurement and calculation information obtained by the traditional power and power balance measurement and calculation method is poor in adaptability and low in reliability.
Disclosure of Invention
In view of the above, the present invention provides a method and a device for measuring and calculating power-electricity balance, so as to solve the problems of poor adaptability and low reliability of measurement and calculation information obtained by the conventional method for measuring and calculating power-electricity balance.
In order to achieve the above object, the present invention provides a method for measuring and calculating power electric quantity balance, comprising:
determining the monomer electricity generating capacity and the monomer adjustable output of each type of power supply based on a preset evaluation rule;
determining the power generation amount of the whole network according to a preset first summation rule and the single power generation amount of each type of power supply;
determining electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, pre-acquired exchange electric quantity and pre-acquired overall electric quantity;
obtaining the adjustable output of the whole network according to a preset second summation rule and the adjustable output of the monomer of each type of power supply;
and determining the electric power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load.
Further, in the above method for measuring and calculating power-electricity balance, the determining the single electricity generation amount and the single adjustable output of each type of power supply based on a preset evaluation rule includes:
counting the distribution information of the power generation amount and the adjustable output distribution information of the new energy power source in the historical synchronization period aiming at the new energy power source of the new energy type;
determining a power generation amount expected value of historical statistics according to the power generation amount distribution information;
determining the output mode of historical statistics according to the adjustable output distribution information;
determining the electricity generation amount of the new energy power supply and the adjustable output of the new energy power supply according to a preset new energy evaluation rule, the expected electricity generation amount value and the output mode;
counting the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period aiming at the traditional power supply of the traditional energy type;
and determining the electricity generating amount of the traditional power supply and the adjustable output of the traditional power supply according to a preset traditional energy evaluation rule, the whole-network limited rate and the whole-network load rate.
Further, in the above method for measuring and calculating power-electricity balance, the counting of the distribution information of the power generation amount and the adjustable output distribution information of the new energy power source in the historical synchronization includes:
counting the historical synchronous actual generating capacity of the new energy power supply;
determining historical contemporaneous electricity generation amount distribution information of the new energy power supply according to the maximum actual electricity generation amount, the minimum actual electricity generation amount and a preset first statistical rule;
determining the load peak period of the power grid according to the actual operation information of the power grid;
according to a preset time interval and a preset second statistical rule, the average output of the new energy power supply in each time interval is counted;
and determining historical contemporaneous adjustable output distribution information of the new energy power supply according to the maximum average output, the minimum average output and a preset third statistical rule.
Further, in the above power-electric-quantity balance measuring and calculating method, the first statistical rule includes: dividing a range between the maximum actual power generation amount and the minimum actual power generation amount into N intervals according to a preset first statistical formula, wherein N is an integer greater than or equal to 2;
the second statistical rule comprises: the average output of the new energy power supply in each time interval is equal to the product of the time-interval power generation amount of the new energy power supply in each time interval and a time coefficient, wherein the time coefficient is the ratio of one hour to the time interval;
the third statistical rule comprises: and dividing the range between the maximum average output and the minimum average output into the N intervals according to a preset second statistical formula.
Further, in the above method for measuring and calculating power and power balance, the counting of the total grid limited rate and the total grid load rate of the conventional power source during the historical synchronization includes:
according to a preset fourth preset statistical rule, counting the unit limited rate of each generator set in the traditional power supply and the unit load rate of each generator set in the traditional power supply;
and determining the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period according to a preset fifth preset statistical rule, each unit limited rate and each unit load rate.
The invention also provides a device for measuring and calculating the balance of electric power and electric quantity, which comprises:
the determining module is used for determining the monomer electricity generating amount and the monomer adjustable output of each type of power supply based on a preset evaluation rule;
the summing module is used for determining the whole network electricity generating amount according to a preset first summing rule and the single electricity generating amount of each type of power supply; obtaining the adjustable output of the whole network according to a preset second summation rule and the single adjustable output of each type of power supply;
the measuring and calculating module is used for determining the electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity; and determining the power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load.
Further, in the above power-electric-quantity balance measuring and calculating device, the determining module is specifically configured to:
counting the distribution information of the power generation amount and the adjustable output distribution information of the new energy power source in the historical synchronization period aiming at the new energy power source of the new energy type;
determining a power generation amount expected value of historical statistics according to the power generation amount distribution information;
determining the output mode of historical statistics according to the adjustable output distribution information;
determining the electricity generation amount of the new energy power supply and the adjustable output of the new energy power supply according to a preset new energy evaluation rule, the expected electricity generation amount value and the output mode;
counting the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period aiming at the traditional power supply of the traditional energy type;
and determining the electricity generating amount of the traditional power supply and the adjustable output of the traditional power supply according to a preset traditional energy evaluation rule, the whole-network limited rate and the whole-network load rate.
Further, in the above power-electric-quantity balance measuring and calculating device, the determining module is further configured to:
counting the historical synchronous actual generating capacity of the new energy power supply;
determining historical contemporaneous electricity generation amount distribution information of the new energy power supply according to the maximum actual electricity generation amount, the minimum actual electricity generation amount and a preset first statistical rule;
determining the load peak period of the power grid according to the actual operation information of the power grid;
according to a preset time interval and a preset second statistical rule, the average output of the new energy power supply in each time interval is counted;
and determining historical contemporaneous adjustable output distribution information of the new energy power supply according to the maximum average output, the minimum average output and a preset third statistical rule.
Further, in the above power-electric-quantity balance measuring and calculating device, the first statistical rule includes: dividing a range between the maximum actual power generation amount and the minimum actual power generation amount into N intervals according to a preset first statistical formula, wherein N is an integer greater than or equal to 2;
the second statistical rule comprises: the average output of the new energy power supply in each time interval is equal to the product of the time-interval power generation amount of the new energy power supply in each time interval and a time coefficient, wherein the time coefficient is the ratio of one hour to the time interval;
the third statistical rule comprises: and dividing the range between the maximum average output and the minimum average output into the N intervals according to a preset second statistical formula.
Further, in the above power-electric-quantity balance measuring and calculating device, the determining module is further configured to:
according to a preset fourth preset statistical rule, counting the unit limited rate of each generator set in the traditional power supply and the unit load rate of each generator set in the traditional power supply;
and determining the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period according to a preset fifth preset statistical rule, each unit limited rate and each unit load rate.
The method and the device for measuring and calculating the balance of the electric power and the electric quantity determine the monomer electricity generating quantity and the monomer adjustable output of each type of power supply based on the preset evaluation rule; determining the power generation amount of the whole network according to a preset first summation rule and the single power generation amount of each type of power supply; determining electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity; obtaining the adjustable output of the whole network according to a preset second summation rule and the single adjustable output of each type of power supply; and determining the power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load, so that the power and electric quantity balance measurement and calculation of any type of power supply in the power supply of the whole network are realized. By adopting the technical scheme of the invention, the application range of the balance measurement of the electric power and the electric quantity of the whole network power supply can be enlarged, and the reliability of the measurement result is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating an embodiment of a power-electricity balance measuring method according to the present invention;
fig. 2 is a statistical distribution diagram corresponding to historical contemporaneous electricity generation amount distribution information and adjustable output distribution information of the new energy power supply;
fig. 3 is a schematic structural diagram of an embodiment of the power-electricity balance measuring device according to the present invention;
fig. 4 is a schematic structural diagram of an embodiment of the decomposition device for the annual basic electric quantity of the generator set.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a flowchart of an embodiment of a power balance calculating method according to the present invention, and as shown in fig. 1, the power balance calculating method of the present embodiment may specifically include the following steps:
100. determining the monomer electricity generating capacity and the monomer adjustable output of each type of power supply based on a preset evaluation rule;
in practical application, the whole network power supply can be composed of traditional power supplies such as thermal power and hydropower and new energy power supplies such as wind power and photovoltaic. The embodiment aims at the defect that the output of the new energy power supply is influenced by weather highly and annual weather prediction data in medium-long term prediction hardly support the prediction requirement of the high-precision new energy power supply, considers the real availability of the new energy power supply in the intervention of the whole network power supply, and determines the monomer electricity generation amount and the monomer adjustable output of the new energy power supply by adopting a statistical mode.
In a specific implementation process, the distribution information of the power generation amount and the adjustable output distribution information of the new energy power source in the historical synchronization period can be counted aiming at the new energy power source of the new energy type. Specifically, the historical synchronous actual power generation amount of the new energy power supply can be counted; and determining historical contemporaneous electricity generation amount distribution information of the new energy power supply according to the maximum actual electricity generation amount, the minimum actual electricity generation amount and a preset first statistical rule. The distribution information of the historical and contemporaneous electricity generation amount of the new energy power supply is daily actual electricity generation amount, and historical data can be directly counted to obtain the distribution information. In this embodiment, the first statistical rule includes: dividing a range between the maximum actual power generation amount and the minimum actual power generation amount into N intervals according to a preset first statistical formula, wherein N is an integer greater than or equal to 2. Specifically, the first preset formula is as follows:
the maximum power generation amount of the new energy in the month and the day,the minimum power generation amount of the new energy in the month and the day,is as followsnIndividual interval and the firstn+1The division value of each interval. Number of divisionsNThe value of (A) is given manually and is generally not lower than 10.
In a specific implementation process, the load peak period of the power grid can be determined according to the actual operation information of the power grid of each province, and the average output of the new energy power supply in each time interval is counted according to the preset time interval and the preset second statistical rule. The second statistical rule comprises that the average output of the new energy power supply in each time interval is equal to the product of the time interval power generation amount of the new energy power supply in each time interval and a time coefficient, wherein the time coefficient is the ratio of one hour to the time interval. For example, the present embodiment preferably counts the average output of the new energy in the whole network during the peak load period according to the time interval of one time period every 5 minutes, so that the time coefficient in the second statistical rule is 12, and the formula of the second statistical rule is as follows:
in the formula (5), the reaction mixture is,for new energymFirst of monthdEvery 5 minutestThe average force over the period of time,is the power generation amount of the period.
After the average output of the new energy power supply in each time interval is counted, the historical contemporaneous adjustable output distribution information of the new energy power supply can be determined according to the maximum average output, the minimum average output and a preset third statistical rule. Wherein the third statistical rule comprises: and dividing the range between the maximum average output and the minimum average output into N intervals according to a preset second statistical formula.
The second statistical formula in this embodiment is:
the maximum average output of the new energy in the current month,the minimum average output of the new energy in the current month,first, thenIndividual interval and the firstn+1The division value of each interval. Number of divisionsNThe value of (A) is given manually and is generally not lower than 10.
In this embodiment, a statistical distribution graph may be drawn as shown in fig. 2. Fig. 2 is a statistical distribution diagram corresponding to historical contemporaneous electricity generation amount distribution information and adjustable output distribution information of the new energy power supply, wherein an abscissa in the statistical distribution diagram is the electricity generation amount/adjustable output value of the new energy power supply, and the statistical distribution diagram is divided into N segments according to the interval division. The ordinate is the statistical frequency, and is the average output of the new energy power supply in the current month and the occurrence frequency of the daily electricity generation amount in the interval range.
In a specific implementation process, a historical statistical expected value of the power generation amount can be determined according to the statistical distribution information of the power generation amount; determining the output mode of historical statistics according to the adjustable output distribution information; and determining the electricity generation amount of the new energy power supply and the adjustable output of the new energy power supply according to a preset new energy evaluation rule, an expected power generation amount value and an output mode.
Specifically, the new energy power source may be specified atmThe month adjustable output is the average output corresponding to the output mode of the statistical distribution graph, and the corresponding formula is as follows:
in the formula (7), the reaction mixture is,for new energy of the whole networkmThe adjustable output of the force of the moon is,to account for the adjustable output of the new energy source in the profile,the output mode of the new energy power supply with adjustable output in the statistical distribution map is shown.
In addition, the new energy power source can be specified atmThe monthly power generation amount is a daily power generation amount expected value obtained according to the statistical distribution diagram, and a corresponding formula is as follows:
in the formula (8), the reaction mixture is,for new energy of the whole networkmThe amount of electricity that can be generated in the month,NDmthe number of days in the month is,historical statistics is carried out on the daily generated energy of the new energy in the whole network,and carrying out historical statistics on the expected value of the generated energy of the new energy power supply in the statistical distribution map.
In practical application, the whole network limited rate and the whole network load rate of the traditional power source in the same period of history can be counted aiming at the traditional power source of the traditional energy type. The historical synchronization whole-network limited rate of the traditional power supply refers to the difference between the actual maximum power generation capacity and the installed capacity of the power generator set due to the self reason of the power generator set, and the load rate refers to the proportion between the daily average power generation amount and the maximum power generation amount of the power generator set. In this embodiment, the unit limited rate of each generator set in the conventional power supply and the unit load rate of each generator set in the conventional power supply may be counted according to a preset fourth preset statistical rule. Specifically, the fourth preset statistical rule is that the limited rate of the generator set and the load factor of the generator set can be calculated according to the ratio of the average actual maximum output of the generator set in the actual operation process, the daily generated energy and the installed capacity of the generator set, and the calculation formula is as follows:
in the formulae (9) and (10),as a conventional power supplygIn the first placemThe limited proportion of the month in which,the average daily generated energy load rate of the generator set in the current month,in the current month for the unitdThe maximum force exerted by the day is,in order to install the generator set,generating set for taking the monthgThe average maximum output force is obtained by the following steps,is the first generator setdThe power generation amount of the day is,in order to obtain the average daily generated energy of the generator set in the same month,the daily maximum power generation amount of the generator set is obtained.
After the load rates of the generator sets and the limited proportion of the generator sets are obtained, the whole network limited rate and the whole network load rate of the traditional power supply in the historical period can be determined according to a preset fifth preset statistical rule, each unit limited rate and each unit load rate. Specifically, according to the load rate of each generator set and the limited proportion of each generator set, the average limited proportion and the load rate of the whole network can be calculated, and the calculation formula can be expressed as follows:
in the formulae (11) and (12),is as followsmThe load rate of the power generation amount in the equivalent day of the month,is as followsmThe proportion of the equivalent of the month is limited,NGthe number of the generator sets of the traditional power supply of the whole network is.
After the whole network limited rate and the whole network load rate are obtained, the power generation amount of the traditional power supply and the adjustable output of the traditional power supply can be determined according to the preset traditional energy evaluation rule, the whole network limited rate and the whole network load rate. The preset conventional energy evaluation rule may refer to equations (1) and (2).
101. Determining the power generation amount of the whole network according to a preset first summation rule and the single power generation amount of each type of power supply;
after the single electricity generating amount of each type of power supply is determined, the single electricity generating amount of each type of power supply can be substituted into a first summation formula in a first summation rule to obtain the whole network electricity generating amount. Wherein the first summation formula is:
wherein the content of the first and second substances,is as followsmThe whole network can generate electricity.
102. Determining electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity;
in this embodiment, the corresponding exchange power amount may be obtained in advance from the power transmission and reception plan arrangement, and the corresponding coordinated power amount and the whole network power generation amount may be obtained from the coordinated power amount/coordinated load prediction data. Therefore, the electric quantity measuring and calculating information of the whole network can be determined by utilizing the first balance measuring and calculating rule, the whole network electric quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity. The first balance measurement rule may include the following measurement formula:
wherein the content of the first and second substances,ΔEmis as followsmThe power measurement value corresponding to the monthly power measurement information,in order to exchange the amount of electricity,to pool the electric quantity.
103. Obtaining the adjustable output of the whole network according to a preset second summation rule and the single adjustable output of each type of power supply;
in this embodiment, after the individual adjustable output of each type of power supply is determined, the individual adjustable output of each type of power supply may be substituted into the second summation formula in the second summation rule to obtain the total network adjustable output. Wherein the second summation formula is:
wherein the content of the first and second substances,is as followsmThe output of the whole moon net can be adjusted.
104. And determining the electric power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load.
In this embodiment, the corresponding exchange power may be obtained in advance from the power transmission and reception plan arrangement, and the corresponding coordinated load and the network-wide adjustable output may be obtained from the coordinated electric quantity/coordinated load prediction data. In this way, the power measurement and calculation information of the whole network can be determined by using the second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load. The second balance calculation rule may include the following calculation formula:
wherein the content of the first and second substances,ΔPmis as followsmThe power measurement value corresponding to the power measurement information of the month,in order to exchange the power, the power is exchanged,to orchestrate the load.
It should be noted that the steps 101-.
The power and electric quantity balance measuring and calculating method of the embodiment determines the monomer power generation quantity and the monomer adjustable output of each type of power supply based on a preset evaluation rule; determining the power generation amount of the whole network according to a preset first summation rule and the single power generation amount of each type of power supply; determining electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity; obtaining the adjustable output of the whole network according to a preset second summation rule and the single adjustable output of each type of power supply; and determining the power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load, so that the power and electric quantity balance measurement and calculation of any type of power supply in the power supply of the whole network are realized. By adopting the technical scheme of the invention, the application range of the balance measurement of the electric power and the electric quantity of the whole network power supply can be enlarged, and the reliability of the measurement result is improved.
Fig. 3 is a schematic structural diagram of an embodiment of the power-level balance measuring device according to the present invention, and as shown in fig. 3, the power-level balance measuring device of the present embodiment includes a determining module 10, a summing module 11, and a measuring module 12.
The determining module 10 is configured to determine, based on a preset evaluation rule, a monomer power generation amount and a monomer adjustable output of each type of power supply;
the summing module 11 is configured to determine the total network power generation amount according to a preset first summing rule and the single power generation amount of each type of power supply; obtaining the adjustable output of the whole network according to a preset second summation rule and the single adjustable output of each type of power supply;
the measuring and calculating module 12 is configured to determine electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electric quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity; and determining the electric power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load.
The power and electric quantity balance measuring and calculating device of the embodiment determines the single electricity generating quantity and the single adjustable output of each type of power supply based on a preset evaluation rule; determining the power generation amount of the whole network according to a preset first summation rule and the single power generation amount of each type of power supply; determining electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity; obtaining the adjustable output of the whole network according to a preset second summation rule and the single adjustable output of each type of power supply; and determining the power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load, so that the power and electric quantity balance measurement and calculation of any type of power supply in the power supply of the whole network are realized. By adopting the technical scheme of the invention, the application range of the balance measurement of the electric power and the electric quantity of the whole network power supply can be enlarged, and the reliability of the measurement result is improved.
In a specific implementation process, the determining module 10 is further configured to: counting historical synchronous actual generated energy of the new energy power supply; determining historical contemporaneous electricity generation amount distribution information of the new energy power supply according to the maximum actual electricity generation amount, the minimum actual electricity generation amount and a preset first statistical rule; determining the load peak period of the power grid according to the actual operation information of the power grid; according to a preset time interval and a preset second statistical rule, the average output of the new energy power supply in each time interval is counted; and determining historical contemporaneous adjustable output distribution information of the new energy power supply according to the maximum average output, the minimum average output and a preset third statistical rule.
In this embodiment, the first statistical rule includes: dividing a range between the maximum actual power generation amount and the minimum actual power generation amount into N intervals according to a preset first statistical formula, wherein N is an integer greater than or equal to 2; the second statistical rule includes: the average output of the new energy power supply in each time interval is equal to the product of the time period generated energy of the new energy power supply in each time interval and a time coefficient, wherein the time coefficient is the ratio of one hour to the time interval; the third statistical rule includes: and dividing the range between the maximum average output and the minimum average output into N intervals according to a preset second statistical formula.
Further, in the foregoing embodiment, the determining module 10 is further configured to: according to a preset fourth preset statistical rule, the unit limited rate of each generator set in the traditional power supply and the unit load rate of each generator set in the traditional power supply are counted; and determining the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period according to a preset fifth preset statistical rule, the limited rate of each unit and the load rate of each unit.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 4 is a schematic structural diagram of an embodiment of the decomposition device for the annual basic electric quantity of the generator set according to the present invention, and as shown in fig. 4, the decomposition device for the annual basic electric quantity of the generator set according to the present embodiment may include a processor 20 and a memory 21; the processor 20 is connected to the memory 21:
wherein, the processor 20 is used for calling and executing the program stored in the memory 21;
the memory 21 is configured to store the program, and the program is configured to perform at least the power balance calculating method of the above embodiment.
The present invention also provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the power-electricity balance calculating method according to the above embodiment are realized.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention 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 invention, 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 alternate implementations are included within the scope of the preferred embodiment of the present invention 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 invention.
It should be understood that portions of the present invention 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 invention 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 stand-alone 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, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. 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.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method for measuring and calculating power electric quantity balance is characterized by comprising the following steps:
determining the monomer electricity generating capacity and the monomer adjustable output of each type of power supply based on a preset evaluation rule;
determining the power generation amount of the whole network according to a preset first summation rule and the single power generation amount of each type of power supply;
determining electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, pre-acquired exchange electric quantity and pre-acquired overall electric quantity;
obtaining the adjustable output of the whole network according to a preset second summation rule and the adjustable output of the monomer of each type of power supply;
and determining the electric power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load.
2. The method for measuring and calculating the balance of electric power and energy according to claim 1, wherein the determining the single electricity generating capacity and the single adjustable output of each type of power source based on the preset evaluation rule comprises:
counting the distribution information of the power generation amount and the adjustable output distribution information of the new energy power source in the historical synchronization period aiming at the new energy power source of the new energy type;
determining a power generation amount expected value of historical statistics according to the power generation amount distribution information;
determining the output mode of historical statistics according to the adjustable output distribution information;
determining the electricity generation amount of the new energy power supply and the adjustable output of the new energy power supply according to a preset new energy evaluation rule, the expected electricity generation amount value and the output mode;
counting the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period aiming at the traditional power supply of the traditional energy type;
and determining the electricity generating amount of the traditional power supply and the adjustable output of the traditional power supply according to a preset traditional energy evaluation rule, the whole-network limited rate and the whole-network load rate.
3. The method for measuring and calculating power electricity balance as claimed in claim 2, wherein the step of counting distribution information of power generation amount and adjustable power output distribution information of the new energy power source in the historical period comprises:
counting the historical synchronous actual generating capacity of the new energy power supply;
determining historical contemporaneous electricity generation amount distribution information of the new energy power supply according to the maximum actual electricity generation amount, the minimum actual electricity generation amount and a preset first statistical rule;
determining the load peak period of the power grid according to the actual operation information of the power grid;
according to a preset time interval and a preset second statistical rule, the average output of the new energy power supply in each time interval is counted;
and determining historical contemporaneous adjustable output distribution information of the new energy power supply according to the maximum average output, the minimum average output and a preset third statistical rule.
4. The method according to claim 3, wherein the first statistical rule comprises: dividing a range between the maximum actual power generation amount and the minimum actual power generation amount into N intervals according to a preset first statistical formula, wherein N is an integer greater than or equal to 2;
the second statistical rule comprises: the average output of the new energy power supply in each time interval is equal to the product of the time-interval power generation amount of the new energy power supply in each time interval and a time coefficient, wherein the time coefficient is the ratio of one hour to the time interval;
the third statistical rule comprises: and dividing the range between the maximum average output and the minimum average output into the N intervals according to a preset second statistical formula.
5. The method for measuring and calculating power electric quantity balance according to claim 2, wherein the counting the whole grid limited rate and the whole grid load rate of the historical synchronization of the traditional power source comprises:
according to a preset fourth preset statistical rule, counting the unit limited rate of each generator set in the traditional power supply and the unit load rate of each generator set in the traditional power supply;
and determining the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period according to a preset fifth preset statistical rule, each unit limited rate and each unit load rate.
6. An electric power balance measuring and calculating device, comprising:
the determining module is used for determining the monomer electricity generating amount and the monomer adjustable output of each type of power supply based on a preset evaluation rule;
the summing module is used for determining the whole network electricity generating amount according to a preset first summing rule and the single electricity generating amount of each type of power supply; obtaining the adjustable output of the whole network according to a preset second summation rule and the single adjustable output of each type of power supply;
the measuring and calculating module is used for determining the electric quantity measuring and calculating information of the whole network according to a preset first balance measuring and calculating rule, the whole network electricity generating quantity, the pre-acquired exchange electric quantity and the pre-acquired overall electric quantity; and determining the power measurement and calculation information of the whole network according to a preset second balance measurement and calculation rule, the adjustable output of the whole network, the pre-acquired exchange power and the pre-acquired overall load.
7. The power electric quantity balance measurement and calculation device according to claim 6, wherein the determination module is specifically configured to:
counting the distribution information of the power generation amount and the adjustable output distribution information of the new energy power source in the historical synchronization period aiming at the new energy power source of the new energy type;
determining a power generation amount expected value of historical statistics according to the power generation amount distribution information;
determining the output mode of historical statistics according to the adjustable output distribution information;
determining the electricity generation amount of the new energy power supply and the adjustable output of the new energy power supply according to a preset new energy evaluation rule, the expected electricity generation amount value and the output mode;
counting the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period aiming at the traditional power supply of the traditional energy type;
and determining the electricity generating amount of the traditional power supply and the adjustable output of the traditional power supply according to a preset traditional energy evaluation rule, the whole-network limited rate and the whole-network load rate.
8. The power flow balance estimation device according to claim 7, wherein the determining module is further configured to:
counting the historical synchronous actual generating capacity of the new energy power supply;
determining historical contemporaneous electricity generation amount distribution information of the new energy power supply according to the maximum actual electricity generation amount, the minimum actual electricity generation amount and a preset first statistical rule;
determining the load peak period of the power grid according to the actual operation information of the power grid;
according to a preset time interval and a preset second statistical rule, the average output of the new energy power supply in each time interval is counted;
and determining historical contemporaneous adjustable output distribution information of the new energy power supply according to the maximum average output, the minimum average output and a preset third statistical rule.
9. The power-electricity-quantity-balance measuring and calculating device according to claim 8, wherein the first statistical rule includes: dividing a range between the maximum actual power generation amount and the minimum actual power generation amount into N intervals according to a preset first statistical formula, wherein N is an integer greater than or equal to 2;
the second statistical rule comprises: the average output of the new energy power supply in each time interval is equal to the product of the time-interval power generation amount of the new energy power supply in each time interval and a time coefficient, wherein the time coefficient is the ratio of one hour to the time interval;
the third statistical rule comprises: and dividing the range between the maximum average output and the minimum average output into the N intervals according to a preset second statistical formula.
10. The power flow balance estimation device according to claim 7, wherein the determining module is further configured to:
according to a preset fourth preset statistical rule, counting the unit limited rate of each generator set in the traditional power supply and the unit load rate of each generator set in the traditional power supply;
and determining the whole network limited rate and the whole network load rate of the traditional power supply in the historical synchronization period according to a preset fifth preset statistical rule, each unit limited rate and each unit load rate.
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