CN113538164B - Modeling method and device for power system production simulation model and electronic equipment - Google Patents
Modeling method and device for power system production simulation model and electronic equipment Download PDFInfo
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Abstract
The invention provides a modeling method, a modeling device and electronic equipment of a production simulation model of an electric power system, wherein the electric power system comprises at least one electric power element, and the method comprises the following steps: a production simulation model is built, the production simulation model comprises electric power sub-models which are in one-to-one correspondence with the electric power elements, and the electric power sub-models are models obtained by performing parameter setting on a general element model according to the output characteristics of the electric power elements; under the condition that a target power element is required to be added in the power system, parameter setting is carried out on the general element model according to the output characteristics of the target power element, so as to obtain a target power sub-model; and updating the production simulation model based on the target power sub-model to obtain a first target production simulation model. The modeling method, the modeling device and the electronic equipment for the production simulation model of the power system can solve the problem of high maintenance cost for the production simulation model in the prior art.
Description
Technical Field
The invention relates to the field of power systems, in particular to a modeling method and device for a power system production simulation model and electronic equipment.
Background
Along with the rapid development of new energy sources such as wind power, solar power generation and the like, the development bottleneck of the new energy sources starts to be changed from the constraint of technical equipment and development capability to the constraint of the power system in the aspects of capacity and operation mechanism and the like. Scientific analysis and evaluation predict the new energy consumption capability of the power system to ensure the healthy development of new energy. With the promotion of energy production and consumption revolution, large-scale new energy power generation and rapid growth of novel electrified consumption terminals, new technologies and new states in an electric power system are continuously emerging, so that the existing electric power system production simulation tool is difficult to adapt to new situations, and each new electric power production and consumption technology element needs to be greatly modified and adjusted to the existing production simulation model. Therefore, in the prior art, the problem of high maintenance cost for the production simulation model exists.
Disclosure of Invention
The embodiment of the invention provides a modeling method, a modeling device and electronic equipment for a production simulation model of a power system, which are used for solving the problem of high maintenance cost for the production simulation model in the prior art.
In order to solve the technical problems, the invention is realized as follows: in a first aspect, an embodiment of the present invention provides a modeling method of a production simulation model of an electric power system, the electric power system including at least one electric power element, the method including:
a production simulation model is built, the production simulation model comprises electric power sub-models which are in one-to-one correspondence with the electric power elements, and the electric power sub-models are models obtained by performing parameter setting on a general element model according to the output characteristics of the electric power elements;
under the condition that a target power element is required to be added in the power system, parameter setting is carried out on the general element model according to the output characteristics of the target power element, so as to obtain a target power sub-model;
and updating the production simulation model based on the target power sub-model to obtain a first target production simulation model.
Optionally, the production simulation model is:
the first target production simulation model is:
wherein the P is i (t) is the generated power of the ith power element at time t, said C i (t) is the stored power of the ith power element at time t, the
For the power loss of the transmission line at the time t, L t D is the required power of the power supply area at the time t t To the standby power of the power supply area at the time t, W 1t For the energy rejection power of the production simulation model at the time t, the W 2t And producing the energy rejection power of the simulation model at the time t for the first target.
Optionally, the updating the production simulation model based on the target power sub-model to obtain a first target production simulation model includes:
and updating the production simulation model based on the target power sub-model by taking the waste energy power value as an optimization target to obtain a first target production simulation model.
Optionally, after the building of the production simulation model, the method further comprises:
under the condition that the power system needs to reduce a second power element, updating the production simulation model to obtain a second target production simulation model, wherein the second target production simulation model is as follows:
wherein the second power element is any one of the at least one power element, the W 3t And producing the energy rejection power of the simulation model at the time t for the second target.
In a second aspect, an embodiment of the present invention further provides a modeling apparatus for a production simulation model of an electric power system, the electric power system including at least one electric power element, the apparatus including:
the construction module is used for constructing a production simulation model, the production simulation model comprises electric power sub-models which are in one-to-one correspondence with the electric power elements, and the electric power sub-models are models obtained by performing parameter setting on a general element model according to the output characteristics of the electric power elements;
the parameter setting module is used for carrying out parameter setting on the general element model according to the output characteristics of the target power element under the condition that the power system needs to be added with the target power element to obtain a target power sub-model;
and the updating module is used for updating the production simulation model based on the target power sub-model to obtain a first target production simulation model.
Optionally, the production simulation model is:
the first target production simulation model is:
wherein the P is i (t) is the generated power of the ith power element at time t, said C i (t) is the ith electricityThe energy storage power of the force element at the time t, which
For the power loss of the transmission line at the time t, L t D is the required power of the power supply area at the time t t To the standby power of the power supply area at the time t, W 1t For the energy rejection power of the production simulation model at the time t, the W 2t And producing the energy rejection power of the simulation model at the time t for the first target.
Optionally, the updating module is specifically configured to update the production simulation model based on the target power sub-model by using the abandoned energy power value as an optimization target, so as to obtain a first target production simulation model.
Optionally, the updating module is further configured to update the production simulation model to obtain a second target production simulation model under the condition that the power system needs to reduce a second power element, where the second target production simulation model is:
wherein the second power element is any one of the at least one power element, the W 3t And producing the energy rejection power of the simulation model at the time t for the second target.
In a third aspect, an embodiment of the present invention further provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
and the processor is used for executing the modeling method steps of the power system production simulation model when executing the program stored in the memory.
In a fourth aspect, embodiments of the present invention also provide a computer-readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the steps of the modeling method of the above-described power system production simulation model.
In the embodiment of the invention, the production simulation model of the electric power system is formed by setting the universal element model and enabling each electric power element in the electric power system to establish an independent sub-model based on the universal element model. Thus, when the power system needs to add a target power element, the model can be updated only by building a target power sub-model based on the general element model and adding the target power sub-model to the production simulation model. In the process, the sub-model of the target power element does not need to be built again, and the update can be directly carried out on the basis of the existing production simulation model, so that the maintenance cost of the production simulation model is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a flow chart of a modeling method for a power system production simulation model provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a generic component model in an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a modeling apparatus for a simulation model of power system production according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a modeling method of a power system production simulation model provided by an embodiment of the present invention, where the power system includes at least one power element, the method includes:
the power system may include various power elements, including a power generation element, a power storage element, and the like. For example, one power system may include a hydro-power generation element, a thermal power generation element, a wind power generation element, a photovoltaic power generation element, a photo-thermal power generation element, an electric energy storage pumping element, an electric heat storage electric car element, and the like at the same time.
In actual production, the production activities of the power system are realized by the cooperation of the plurality of power elements. Therefore, in order to avoid blind production, it is generally necessary to provide a production model for modeling the amount of power generated or stored by each power element at each time, so as to ensure that sufficient power resources are provided for the user while avoiding wasting the power resources.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a general component in the above embodiment, and the general component model may be expressed as:
P(t)-C(t)＝I(t)-O(t)；
wherein P (t) is the external output electric power of the universal element at the time t, C (t) is the electric power stored by the universal element at the time t, I (t) is the electric power generated by the universal element at the time t, and O (t) is the electric power consumed by the universal element at the time t.
In addition, the following constraint conditions can be set for the general element model:
P i,min (t)≤P i (t)≤P i,max (t)；
-RD i (t)≤P i (t)-P i-1 (t)≤RU i (t)；
C i,min (t)≤C i (t)≤C i,max (t)；
-CD i (t)≤C i (t)-C i-1 (t)≤CU i (t)；
SC i,min (t)≤S i (t)≤SC i,max (t)；
S i (t)-S i (t-1)＝I i (t)-P i (t)-η i (t)*C i (t)-W i (t)；
wherein P is i,min (t) is the maximum external output electric power of the ith electric power element at the time t, P i,max (t) the minimum external output electric power of the ith electric power element at the time t, RD i (t) is the maximum downhill climbing rate of the ith power element at the moment t, RU i (t) maximum ramp rate of ith power element at time t, C i,min (t) is the minimum charging power of the ith power element at time t, C i,max (t) is the maximum charging power of the ith power element at time t, SC i,min (t) is the minimum energy storage of the ith power element at the moment t, S i (t) is the energy storage energy of the ith power element at the time t, SC i,max (t) is the maximum energy storage capacity of the ith power element at the moment t, eta i (t) is the charging efficiency of the ith power element at time t, W i And (t) is the energy rejection power of the ith power element at the time t. P (P) i (t) is the external output electric power of the ith electric power element at the moment t, I i And (t) is the generated power of the ith power element at the time t.
Specifically, the above-mentioned general element model may be set with parameters according to the output characteristics of each electric element to obtain an electric sub-model corresponding to the electric element, for example:
(1) Aiming at thermal power generation elements, the output of the thermal power generating unit can be freely regulated between the maximum and minimum output constraint according to requirements, wherein the maximum and minimum technical output of the thermal power generating unit is input according to actual conditions according to factors such as a heating period, high-temperature weather and the like, the climbing rate is determined by inherent characteristics of the thermal power generating unit, the non-electric input is sufficient, and other maximum electric power storage, energy storage and power consumption are all zero, so that the parameters can be set as follows:
wherein P is iFP,min (t)、P iFP,max (t) is the maximum and minimum output constraint at t moment of the thermal power unit, RD iFP 、RU iFP Is the maximum and minimum ramp rates of the thermal power generating unit.
(2) For wind power and photovoltaic models, wind power and photovoltaic non-electric input power are determined by theoretical output obtained by resource characteristics, wind power and photovoltaic output power are determined by theoretical output, the maximum value is non-electric maximum input power, and energy storage and non-electric output power are both zero, so that parameters can be set as follows:
wherein I is i,T And (t) is wind power and photovoltaic theoretical output.
(3) For the hydroelectric model, the minimum hydroelectric power output is the predicted hydroelectric power output, the maximum hydroelectric power output is determined by the guaranteed output, the non-hydroelectric power input is determined by the water supply condition, the non-hydroelectric power input is generally equal to the average hydroelectric power output, and the hydroelectric energy storage capacity is determined by the reservoir capacity, so that the following parameters can be set:
(4) For the pumping storage and electrochemical energy storage models, the maximum input or output power of pumping storage and energy storage is determined by the installed capacity, the minimum output power is zero, and the energy storage capacity is determined by the storage capacity or the energy storage duration, so that the following parameters can be set:
wherein P is iSP (t) is pumped storage or stored energy installed power, RC iSP For accumulator volumes or machines, eta iSP Is energy storage conversion efficiency.
(5) For electric vehicles and electric heat storage models, parameters can be set as follows:
wherein P is iSU (t) is pumped storage or stored energy loading capacity, SC iSU Flexibility of energy storage capacity for electric automobile and electric heat storage, O iSU (t) is a non-electric output power, and is determined by output characteristics of an electric vehicle, electric heat storage, and the like.
(6) For the photo-thermal model, parameters can be set as follows:
and 102, under the condition that the power system needs to add a target power element, performing parameter setting on the general element model according to the output characteristic of the target power element to obtain a target power sub-model.
As can be seen from the above discussion, the conventional common power elements can be set with parameters based on the general element model to obtain the corresponding target power sub-model, so that, in the case that the power system needs to add the target power elements, the target power sub-model can be constructed only by the method based on the output characteristics of the target power elements to be configured.
And step 103, updating the production simulation model based on the target electric power sub-model to obtain a first target production simulation model.
Specifically, the production simulation model is:
the first target production simulation model is:
wherein the P is i (t) is the generated power of the ith power element at time t, said C i (t) is the stored power of the ith power element at time t, the
For the power loss of the transmission line at the time t, L t D is the required power of the power supply area at the time t t To the standby power of the power supply area at the time t, W 1t For the energy rejection power of the production simulation model at the time t, the W 2t And producing the energy rejection power of the simulation model at the time t for the first target.
It can be seen that when the production simulation model is updated based on the target power sub-model, only the actual external output power (P i (t)-C i (t)) is added to the power system side of the production simulation model to obtain a first target production simulation model.
In the embodiment of the invention, the production simulation model of the electric power system is formed by setting the universal element model and enabling each electric power element in the electric power system to establish an independent sub-model based on the universal element model. Thus, when the power system needs to add a target power element, the model can be updated only by building a target power sub-model based on the general element model and adding the target power sub-model to the production simulation model. In the process, when the target power element is required to be added, the sub-model of the target power element does not need to be built again, and the direct updating can be realized on the basis of the existing production simulation model, so that the maintenance cost of the production simulation model is reduced.
Optionally, the updating the production simulation model based on the target power sub-model to obtain a first target production simulation model includes:
and updating the production simulation model based on the target power sub-model by taking the waste energy power value as an optimization target to obtain a first target production simulation model.
In the prior art, the problems of wind power wind curtailment and photovoltaic curtailment are serious in partial regional power grids, and wind power wind curtailment and photovoltaic curtailment refer to continuous change of wind power generation and photovoltaic power generation due to the fact that the power of wind power generation and photovoltaic power generation is easily affected by the environment, so that wind power and photovoltaic power are regarded as unstable power sources and cannot be connected in a grid.
Specifically, since the wind power generation element, the photovoltaic power generation element, and the like are greatly affected by the weather conditions, when the wind power and the light are sufficient, the generated power is large, whereas the generated power is small. Therefore, in the prior art, there is uncertainty in the output power of the wind power generation element, the photovoltaic power generation element, and the like, which are greatly affected by the climate conditions. In order to ensure the stability of the electricity consumption of the users, in the prior art, only a part of the generated power of the power generation elements, such as the wind power generation elements, the photovoltaic power generation elements and the like, which are greatly influenced by the climate conditions is utilized to ensure that the power generation elements can stably output smaller power, and the generated surplus electric power is usually abandoned when the wind power and the illumination are sufficient.
In order to avoid the waste of electric power resources, in this embodiment, the minimum energy rejection power value may be set as an optimization target, and the production simulation model is updated based on the target electric power sub-model to obtain a first target production simulation model. I.e. in W 2t And taking the minimum value as an optimization target, and optimizing the simulation model generated by the first target. Thus, the resource waste in the power system can be effectively reduced.
Optionally, after the building of the production simulation model, the method further comprises:
under the condition that the power system needs to reduce a second power element, updating the production simulation model to obtain a second target production simulation model, wherein the second target production simulation model is as follows:
wherein the second power element is any one of the at least one power element, the W 3t And producing the energy rejection power of the simulation model at the time t for the second target.
Because in the power system, a part of traditional power generation elements may be eliminated due to the problems of low power generation efficiency, serious environmental pollution caused by the power generation process and the like. Therefore, when the second power element in the power system needs to be eliminated, the power sub-model corresponding to the second power element can be deleted in the production simulation model. Since the second electric element no longer participates in the generation of electricity in the production simulation model, but the electric power required by the electric power consuming device is unchanged, the generation power of the other electric elements in the production simulation model will be correspondingly increased. Therefore, in order to avoid the blind increase of the output power of each power element, after deleting the sub-model of the second power element, the production simulation model may be optimized with the minimum energy rejection power as an optimization target, so as to obtain a second target production model, where the second target production model may simulate the actual output power of each power element in the output power system, so that a worker may control the output power of each power element according to the simulation result, thereby ensuring that the waste of power resources is caused under the condition of meeting the power consumption requirement.
Referring to fig. 3, fig. 3 is a schematic diagram of an apparatus 300 for creating a production simulation model according to an embodiment of the present invention, where the power system includes at least one power element, and the apparatus includes:
the construction module 301 is configured to construct a production simulation model, where the production simulation model includes electric power sub-models corresponding to the electric power elements one by one, and the electric power sub-models are models obtained by performing parameter setting on a general element model according to output characteristics of the electric power elements;
the parameter setting module 302 is configured to perform parameter setting on the generic element model according to the output characteristic of the target power element to obtain a target power sub-model when the power system needs to add the target power element;
and the updating module 303 is configured to update the production simulation model based on the target power sub-model, so as to obtain a first target production simulation model.
The production simulation model is as follows:
the first target production simulation model is:
wherein the P is i (t) is the generated power of the ith power element at time t, said C i (t) is the stored power of the ith power element at time t, the
For the power loss of the transmission line at the time t, L t D is the required power of the power supply area at the time t t To the standby power of the power supply area at the time t, W 1t For the energy rejection power of the production simulation model at the time t, the W 2t And producing the energy rejection power of the simulation model at the time t for the first target.
Optionally, the updating module is specifically configured to update the production simulation model based on the target power sub-model by using the abandoned energy power value as an optimization target, so as to obtain a first target production simulation model.
Optionally, the updating module is further configured to update the production simulation model to obtain a second target production simulation model under the condition that the power system needs to reduce a second power element, where the second target production simulation model is:
wherein the second power element is any one of the at least one power element, the W 3t And producing the energy rejection power of the simulation model at the time t for the second target.
The embodiment of the invention also provides an electronic device, as shown in fig. 4, which comprises a processor 401, a communication interface 402, a memory 403 and a communication bus 404, wherein the processor 401, the communication interface 402 and the memory 403 complete communication with each other through the communication bus 404,
a memory 403 for storing a computer program;
the processor 401, when executing the program stored in the memory 403, implements the following steps:
a production simulation model is built, the production simulation model comprises electric power sub-models which are in one-to-one correspondence with the electric power elements, and the electric power sub-models are models obtained by performing parameter setting on a general element model according to the output characteristics of the electric power elements;
under the condition that a target power element is required to be added in the power system, parameter setting is carried out on the general element model according to the output characteristics of the target power element, so as to obtain a target power sub-model;
and updating the production simulation model based on the target power sub-model to obtain a first target production simulation model.
Optionally, the production simulation model is:
the first target production simulation model is:
wherein the P is i (t) is the generated power of the ith power element at time t, said C i (t) is the stored power of the ith power element at time t, the
For the power loss of the transmission line at the time t, L t D is the required power of the power supply area at the time t t To the standby power of the power supply area at the time t, W 1t For the energy rejection power of the production simulation model at the time t, the W 2t And producing the energy rejection power of the simulation model at the time t for the first target.
Optionally, the updating the production simulation model based on the target power sub-model to obtain a first target production simulation model includes:
and updating the production simulation model based on the target power sub-model by taking the waste energy power value as an optimization target to obtain a first target production simulation model.
Optionally, after the building of the production simulation model, the method further comprises:
under the condition that the power system needs to reduce a second power element, updating the production simulation model to obtain a second target production simulation model, wherein the second target production simulation model is as follows:
wherein the second power element is any one of the at least one power element, the W 3t And producing the energy rejection power of the simulation model at the time t for the second target.
The communication bus mentioned by the electronic device may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, etc. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.
The communication interface is used for communication between the electronic device and other devices.
The memory may include random access memory (Random Access Memory, RAM) or non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory may also be at least one memory device located remotely from the aforementioned processor.
The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also digital signal processors (Digital Signal Processing, DSP for short), application specific integrated circuits (Application Specific Integrated Circuit, ASIC for short), field-programmable gate arrays (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
In yet another embodiment of the present invention, a computer readable storage medium is provided, in which instructions are stored, which when run on a computer, cause the computer to perform the modeling method of the power system production simulation model of any one of the embodiments.
In a further embodiment of the invention, a computer program product comprising instructions, which when run on a computer, causes the computer to perform the method of modeling a power system production simulation model according to any of the embodiments is also provided.
In the described embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (4)
1. A method of modeling a simulation model of the production of an electrical power system, the electrical power system comprising at least one electrical power element, the method comprising:
a production simulation model is built, the production simulation model comprises electric power sub-models which are in one-to-one correspondence with the electric power elements, and the electric power sub-models are models obtained by performing parameter setting on a general element model according to the output characteristics of the electric power elements;
under the condition that a target power element is required to be added in the power system, parameter setting is carried out on the general element model according to the output characteristics of the target power element, so as to obtain a target power sub-model;
the generic element model is expressed as: p (t) -C (t) =i (t) -O (t); the general element model has four basic functions of external output electric power, electric storage power, generated power and power consumption, can complete modeling of corresponding electric elements according to actual characteristics of different electric elements and by defining related constraint conditions;
wherein P (t) is the external output electric power of the universal element at the time t, C (t) is the electric power stored by the universal element at the time t, I (t) is the electric power generated by the universal element at the time t, and O (t) is the electric power consumed by the universal element at the time t;
the general element model sets the following constraint conditions:
P i,min (t)≤P i (t)≤P i,max (t)；
-RD i (t)≤P i (t)-P i-1 (t)≤RU i (t)；
C i,min (t)≤C i (t)≤C i,max (t)；
-CD i (t)≤C i (t)-C i-1 (t)≤CU i (t)；
SC i,min (t)≤S i (t)≤SC i,max (t)；
S i (t)-S i (t-1)＝I i (t)-P i (t)-η i (t)*C i (t)-W i (t)；
wherein P is i,min (t) is the maximum external output electric power of the ith electric power element at the time t, P i,max (t) the minimum external output electric power of the ith electric power element at the time t, RD i (t) is the maximum downhill climbing rate of the ith power element at the moment t, RU i (t) maximum ramp rate of ith power element at time t, C i,min (t) is the minimum charging power of the ith power element at time t, C i,max (t) is the maximum charging power of the ith power element at time t, SC i,min (t) is the minimum energy storage of the ith power element at the moment t, S i (t) is the energy storage energy of the ith power element at the time t, SC i,max (t) is the maximum energy storage capacity of the ith power element at the moment t, eta i (t) is the charging efficiency of the ith power element at time t, W i (t) is the energy rejection power of the ith power element at time t; p (P) i (t) is the external output electric power of the ith electric power element at the moment t, I i (t) is the generated power of the ith power element at time t;
updating the production simulation model based on the target power sub-model to obtain a first target production simulation model;
the production simulation model is as follows:
the first target production simulation model is:
wherein the P is i (t) is the generated power of the ith power element at time t, said C i (t) is the stored power of the ith power element at time t, the
For the power loss of the transmission line at the time t, L t D is the required power of the power supply area at the time t t To the standby power of the power supply area at the time t, W 1t For the energy rejection power of the production simulation model at the time t, the W 2t Producing the energy rejection power of the simulation model at the time t for the first target;
updating the production simulation model based on the target power sub-model to obtain a first target production simulation model, comprising:
using the abandoned energy power value as an optimization target, and updating the production simulation model based on the target power sub-model to obtain a first target production simulation model;
after the building of the production simulation model, the method further comprises:
under the condition that the power system needs to reduce a second power element, updating the production simulation model to obtain a second target production simulation model, wherein the second target production simulation model is as follows:
wherein the second power element is any one of the at least one power element, the W 3t And producing the energy rejection power of the simulation model at the time t for the second target.
2. A modeling apparatus for a simulation model of the production of an electrical power system, the electrical power system comprising at least one electrical power element, the apparatus comprising:
the construction module is used for constructing a production simulation model, the production simulation model comprises electric power sub-models which are in one-to-one correspondence with the electric power elements, and the electric power sub-models are models obtained by performing parameter setting on a general element model according to the output characteristics of the electric power elements;
the generic element model is expressed as: p (t) -C (t) =i (t) -O (t); the general element model has four basic functions of external output electric power, electric storage power, generated power and power consumption, can complete modeling of corresponding electric elements according to actual characteristics of different electric elements and by defining related constraint conditions;
wherein P (t) is the external output electric power of the universal element at the time t, C (t) is the electric power stored by the universal element at the time t, I (t) is the electric power generated by the universal element at the time t, and O (t) is the electric power consumed by the universal element at the time t;
the general element model sets the following constraint conditions:
P i,min (t)≤P i (t)≤P i,max (t)；
-RD i (t)≤P i (t)-P i-1 (t)≤RU i (t)；
C i,min (t)≤C i (t)≤C i,max (t)；
-CD i (t)≤C i (t)-C i-1 (t)≤CU i (t)；
SC i,min (t)≤S i (t)≤SC i,max (t)；
S i (t)-S i (t-1)＝I i (t)-P i (t)-η i (t)*C i (t)-W i (t)；
wherein P is i,min (t) is the maximum external output electric power of the ith electric power element at the time t, P i,max (t) the minimum external output electric power of the ith electric power element at the time t, RD i (t) is the maximum downhill climbing rate of the ith power element at the moment t, RU i (t) the ith power element at time tMaximum uphill speed, C i,min (t) is the minimum charging power of the ith power element at time t, C i,max (t) is the maximum charging power of the ith power element at time t, SC i,min (t) is the minimum energy storage of the ith power element at the moment t, S i (t) is the energy storage energy of the ith power element at the time t, SC i,max (t) is the maximum energy storage capacity of the ith power element at the moment t, eta i (t) is the charging efficiency of the ith power element at time t, W i (t) is the energy rejection power of the ith power element at time t; p (P) i (t) is the external output electric power of the ith electric power element at the moment t, I i (t) is the generated power of the ith power element at time t;
the parameter setting module is used for carrying out parameter setting on the general element model according to the output characteristics of the target power element under the condition that the power system needs to be added with the target power element to obtain a target power sub-model;
the updating module is used for updating the production simulation model based on the target power sub-model to obtain a first target production simulation model;
the production simulation model is as follows:
the first target production simulation model is:
wherein the P is i (t) is the generated power of the ith power element at time t, said C i (t) is the stored power of the ith power element at time t, the
For the power loss of the transmission line at the time t, L t In the power supply areaRequired power at time t, D t To the standby power of the power supply area at the time t, W 1t For the energy rejection power of the production simulation model at the time t, the W 2t Producing the energy rejection power of the simulation model at the time t for the first target;
the updating module is specifically configured to update the production simulation model based on the target power sub-model by using the waste energy power value as an optimization target, so as to obtain a first target production simulation model;
the updating module is further configured to update the production simulation model to obtain a second target production simulation model under the condition that the power system needs to reduce a second power element, where the second target production simulation model is:
wherein the second power element is any one of the at least one power element, the W 3t And producing the energy rejection power of the simulation model at the time t for the second target.
3. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for executing the method steps of claim 1 when executing the program stored on the memory.
4. A computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method steps of claim 1.
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