KR20220010276A - Apparatus and method for generating a aggregation model for renewable energy analysis - Google Patents

Abstract

The present invention relates to an apparatus and a method for generating an aggregation model for renewable energy analysis, which generate the aggregation model for a renewable energy power generation complex, and verify the aggregation model by comparing a detailed analysis model, generated by using information on the power generation complex, with the aggregation model. The apparatus for generating the aggregation model for the renewable energy analysis according to an embodiment of the present invention comprises: an input unit to which detailed information on the renewable energy power generation complex is input; a calculation unit generating the aggregation model by performing equalization for a generator, a transformer, and a line using the detailed information; a verification unit generating a detailed analysis model by using the detailed information, and verifying the aggregation model by comparing the detailed analysis model with the aggregation model; and an aggregation model output unit outputting the aggregation model.

Description

Apparatus and method for generating a aggregation model for renewable energy analysis}

The present invention relates to an apparatus and method for generating an aggregate model for analysis of renewable energy, and in more detail, by generating an aggregate model for a renewable energy power generation complex, and comparing the detailed analysis model generated using information on the power generation complex with the aggregate model. It relates to an apparatus and method for generating an aggregate model for renewable energy analysis that verifies the aggregate model.

Currently, to respond to climate change, policy efforts are being made with the goal of reducing carbon emissions by 75% compared to 2017 by 2050. As part of these efforts in the electric power sector, the goal of reducing the proportion of coal-fired power generation to 4% and increasing the proportion of renewable energy generation to 60% was set.

The proportion of renewable energy generation is already at a very high level, and the number of operators wishing to be connected to the transmission network as well as the distribution line is increasing every year. As the grid connection of renewable energy power generation facilities increases, the demand for analysis technology essential for analyzing the impact and establishing a stable system operation plan is increasing. is occurring

On the other hand, the government has strengthened the submission of characteristics data for new and renewable power generation facilities. However, since the renewable energy power generation complex is complicatedly composed of a number of generators, transmission lines, and transformers, it is very expensive to construct detailed analysis models.

Accordingly, it is stipulated that renewable energy generators must submit a collective model expressed as a single representative generator rather than a detailed analysis model of the power generation complex.

However, a standardized method and system are needed for consistent and efficient modeling because a number of power generation companies each build a collective model for various types of power generation complexes.

The present invention is to solve the problems described above, and a renewable energy analysis that creates an aggregate model for a renewable energy power generation complex and verifies the aggregate model by comparing the detailed analysis model generated using the information of the power generation complex with the aggregate model An object of the present invention is to provide an apparatus and method for generating a set model for

In addition to the technical problems of the present invention mentioned above, other features and advantages of the present invention will be described below, or will be clearly understood by those of ordinary skill in the art from such description and description.

The apparatus for generating a set model for renewable energy analysis according to an embodiment of the present invention for achieving the above-described object includes an input unit to which detailed information of a renewable energy power generation complex is input, and equivalence to a generator, a transformer, and a line using the detailed information A calculation unit that generates a set model by performing may include

The method for generating a set model for renewable energy analysis according to an embodiment of the present invention for achieving the above-described object includes a step of inputting detailed information of a renewable energy power generation complex, and equivalence of a generator, a transformer, and a line using the detailed information It includes the steps of generating an aggregate model by performing can do.

The apparatus and method for generating a collective model for renewable energy analysis according to an embodiment of the present invention can analyze the power generation complex by generating a collective model for the renewable energy power generation complex.

In addition, by using the generated aggregate model, it is possible to accurately analyze the impact of the power system due to the increase in renewable energy generation, and to establish a reasonable countermeasure.

In addition, it can contribute to the stable operation of the power system along with the increase in the acceptability of the power system for renewable energy generation.

In addition, other features and advantages of the present invention may be newly recognized through embodiments of the present invention.

1 is a view showing a renewable energy power generation complex according to an embodiment of the present invention.
2 is a diagram showing the configuration of an apparatus for generating a set model according to an embodiment of the present invention.
3 is a diagram illustrating an example of generating a first equivalent model according to an embodiment of the present invention.
4 is a diagram illustrating an example of generating a second equivalent model according to an embodiment of the present invention.
5 is a diagram illustrating an example of generating a third equivalent model according to an embodiment of the present invention.
6 is a diagram illustrating an example of generating a fourth equivalent model according to an embodiment of the present invention.
7 is a diagram illustrating an example of generating a fifth equivalent model according to an embodiment of the present invention.
8 is a diagram illustrating a method for generating a set model for renewable energy analysis according to an embodiment of the present invention.
9 is a diagram illustrating in more detail a method of generating a set model using detailed information according to an embodiment of the present invention.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar elements throughout the specification.

Although not defined otherwise, all terms including technical terms and scientific terms used herein have the same meaning as those commonly understood by those of ordinary skill in the art to which the present invention belongs. Commonly used terms defined in the dictionary are additionally interpreted as having a meaning consistent with the related technical literature and the presently disclosed content, and unless defined, are not interpreted in an ideal or very formal meaning.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be implemented in several different forms and is not limited to the embodiments described herein.

1 is a view showing a renewable energy power generation complex according to an embodiment of the present invention.

Referring to FIG. 1 , a renewable energy power generation complex 100 (hereinafter referred to as a power generation complex) includes a plurality of power generation facilities, and may be renewable energy power generation facilities according to an embodiment of the present invention.

In the past, a detailed analysis model of the renewable energy power generation complex 100 was submitted to a renewable energy power generation company. However, since the renewable energy power generation complex 100 is complicatedly composed of a plurality of generators, transmission lines, and transformers, a very large cost is incurred in constructing a detailed analysis model. In addition, it was practically impossible for a grid operator to apply a detailed analysis model of the entire renewable energy power generation complex 100 to analyze the grid impact and establish a power system operation plan.

Accordingly, recently, it is stipulated to submit an aggregate model expressed as a single representative generator rather than a detailed analysis model in consideration of these problems when submitting power generation facility characteristic data. However, the collective model is constructed so that the static/dynamic characteristics of the power generation complex 100 are well reflected according to the individual generator characteristics of the renewable energy power generation complex 100, the step-up transformer characteristics, and the configuration of the complex internal network, and the accuracy of the model is verified. must be submitted later. In addition, it was difficult to consistently and efficiently model the aggregate model for the various types of power generation complexes 100 because a plurality of power generation companies must each build the aggregate model.

Accordingly, the present invention is to consistently and efficiently model the aggregate model, and the generator, transformer, and line in the power generation complex 100 are modeled, and the aggregate model can be generated using the modeling results. In addition, according to an embodiment of the present invention, a detailed analysis model may be generated using information on the power generation complex, and the aggregate model may be verified by comparing the generated aggregate model and the detailed analysis model.

2 is a diagram showing the configuration of an apparatus for generating a set model according to an embodiment of the present invention.

Referring to FIG. 2 , the apparatus 200 for generating a set model according to an embodiment of the present invention may include an input unit 210 , an operation unit 220 , a set model output unit 230 , and a verification unit 240 , The calculation unit 220 includes a generator modeling unit 222 , a transformer modeling unit 224 , a line modeling unit 226 , and a set model generation unit 228 , and the verification unit 240 is a detailed analysis model generation unit 242 . ) and a comparison unit 244 .

The input unit 210 may receive detailed information of the renewable energy power generation complex 100 . Detailed information of the renewable energy power generation complex 100 includes characteristic information of individual renewable energy generators, generator step-up transformer information, grid connection transformer information, complex internal line configuration information, connected transmission line information, and junction equivalent impedance may contain information.

In addition, the characteristic information of the individual renewable energy generator may include the information in Table 1 below.

division Explanation unit power plant capacity Individual generator contract power [MW] number of generators total number of generators [big] Active power effective capacity Average effective capacity [%] Reactive Power Max/Min Output Generator reactive power output upper and lower limits [MVar] Generator internal impedance Generator differential reactance [pu] generator terminal voltage generator terminal voltage [kV]

In addition, the generator step-up (step-up) transformer information may include the information of Table 2 below.

division Explanation unit Transformer secondary voltage internal voltage level [kV] transformer impedance Transformer R, X [pu] Transformer winding type Y-Y, Y-△, △-△ - neutral ground Direct grounding, resistance grounding, ungrounding -

In addition, the information of the transformer for grid connection may include the information of Table 3 below.

division Explanation unit Transformer secondary voltage internal voltage level [kV] transformer impedance Transformer R, X [pu] Transformer winding type Y-Y, Y-△, △-△ - neutral ground Direct grounding, resistance grounding, ungrounding - ancestral equipment (if necessary) ancestral facility capacity [MVar]

Also, only the internal line configuration information may include the information in Table 4 below.

division Explanation unit number of parallel lines Number of lines in the power plant [dog] Number of generators per line Number of generators per individual line [big] Impedance per line - [pu] or [Ohm] Susceptance by line - [pu] or [Ohm] length per track - [km]

In addition, the linked transmission line information may include the information of Table 5 below.

division Explanation unit Conductor type - - number of lines - [circuit] track length - [km] line capacity passion capacity [MVA] or [A]

In addition, the junction point equivalent impedance information may include information such as the junction point equivalent impedance and short-circuit capacity.

The operation unit 220 may perform equivalent modeling of the generator, the transformer, and the line by using the detailed information provided from the input unit 210 .

Specifically, the generator modeling unit 222 may use the detailed information provided from the input unit 210 to calculate the capacity, maximum/minimum output, and internal impedance of the equivalent generator and model the equivalent generator.

The generator modeling unit 222 may calculate the total capacity of the power generation facility by using Equation (1).

[Equation 1]

는 발전설비의 총 용량이고,

은 각 발전설비의 계약전력일 수 있다.here,

is the total capacity of the power plant,

may be the contract power of each power generation facility.

In addition, the generator modeling unit 222 may calculate the output value of the active power by using Equation (2).

[Equation 2]

는 유효전력의 출력값이고,

는 발전설비의 총 용량일 수 있다.here,

is the output value of active power,

may be the total capacity of the power generation facility.

In addition, the generator modeling unit 222 may calculate the output value of the maximum reactive power using Equation (3).

[Equation 3]

는 최대 무효전력이고,

는 발전설비의 총 용량이고,

는 역률일 수 있다.here,

is the maximum reactive power,

is the total capacity of the power plant,

may be a power factor.

In addition, the generator modeling unit 222 may calculate the output value of the minimum reactive power by using Equation (4).

[Equation 4]

는 최소 무효전력이고,

는 발전설비의 총 용량이고,

는 역률일 수 있다.here,

is the minimum reactive power,

is the total capacity of the power plant,

may be a power factor.

In addition, the generator modeling unit 222 may calculate the reference capacity of the equivalent generator by using Equation (5).

[Equation 5]

는 등가 발전기의 기준용량이고,

는 발전설비의 총 용량이고,

는 최대 무효전력일 수 있다.here,

is the reference capacity of the equivalent generator,

is the total capacity of the power plant,

may be the maximum reactive power.

)를 계산할 수 있다. 예컨대, 태양광 발전기의 경우 내부 임피던스(

)는 999999일 수 있고, 풍력 발전기의 경우 타입에 따라 내부 임피던스(

)는 달라질 수 있다. 예컨대, 풍력 발전기의 내부 임피던스는 1/1.1, 1/2.5, 1/6일 수 있다.In addition, the generator modeling unit 222 is the generator internal impedance (

) can be calculated. For example, in the case of a solar generator, the internal impedance (

) may be 999999, and in the case of a wind turbine, the internal impedance (

) may be different. For example, the internal impedance of the wind power generator may be 1/1.1, 1/2.5, 1/6.

The transformer modeling unit 224 may use the detailed information provided from the input unit 210 to calculate the equivalent impedance and model the ancestral facility.

The transformer modeling unit 224 may use an internal reactance to model a power distribution transformer. Also, the transformer modeling unit 224 may model the step-up transformer by summing the internal impedances of the equivalent generator. In addition, the transformer modeling unit 224 may model the ancestral equipment by adding the ancestral equipment model to the primary side of the transformer.

The line modeling unit 226 may calculate and model the equivalent impedance and susceptance of the line using detailed information provided from the input unit 210 .

The line modeling unit 226 may calculate the line equivalent impedance by using Equation (6).

[Equation 6]

는 선로 등가 임피던스일 수 있다.here,

may be a line equivalent impedance.

Also, the line modeling unit 226 may calculate the line equivalent susceptance by using Equation (7).

[Equation 7]

는 선로 등가 서셉턴스일 수 있다.here,

may be line equivalent susceptance.

The aggregate model generator 228 may generate the aggregate model by collecting the equivalent modeling results for each element step by step. According to an embodiment of the present invention, the aggregate model generator 228 may generate a first equivalent model by collecting and equivalizing individual generators and ground transformers. In addition, the aggregate model generator 228 may generate a second equivalent model by collecting and equivalent the first equivalent model linked to the individual line. In addition, the set model generating unit 228 may generate a third equivalent model by collecting and equivalent the grid-connected transformer and the second equivalent model. In addition, the set model generating unit 228 may generate a fourth equivalent model by collecting and equalizing the third equivalent models connected in parallel. In addition, the aggregate model generating unit 228 may generate a fifth equivalent model by linking the power system connection line and the fourth equivalent model, and the fifth equivalent model may be the final aggregate model.

The set model output unit 230 may output the result of the equivalent modeling generated by the operation unit 220 in the form of an input of the systematic analysis program. For example, the systematic analysis program may be PSS/E or the like.

The detailed analysis model generation unit 242 may generate a detailed analysis model by using the detailed information provided from the input unit 210 . Here, the detailed analysis model may be generated by a method of generating an existing detailed analysis model.

The comparison unit 244 may compare the aggregate model generated by the aggregate model generation unit 228 with the detailed analysis model generated by the detailed analysis model generation unit 242 . The comparison unit 244 may verify the accuracy of the aggregate model by comparing the aggregate model with the detailed analysis model. The comparison unit 244 can compare the change in the bus voltage at the connection point according to the level of the power generation output of the renewable energy, compare the change in the power generation output of the renewable energy in case of a short-distance system failure, and compare and analyze the static/dynamic simulation results. have.

3 is a diagram illustrating an example of generating a first equivalent model according to an embodiment of the present invention.

Referring to FIG. 3 , the aggregate model generating unit 228 may generate a first equivalent model by assembling individual generators and terrestrial transformers, and equalizing the individual generators and terrestrial transformers.

The set model generator 228 may combine the generator and reactance as shown in Equation (8).

[Equation 8]

은 발전기 및 변압기 리액턴스의 결합을 나타내고,

는 발전기의 리액턴스이고,

는 변압기의 리액턴스일 수 있다.here,

represents the combination of generator and transformer reactance,

is the reactance of the generator,

may be the reactance of the transformer.

일 수 있다.In addition, the set model generator 228 may calculate the equivalent capacity of the first equivalent model, and the equivalent capacity of the first equivalent model is

can be

The set model generation unit 228 may generate a first equivalent model by collecting a plurality of generators and transformers included in the power generation complex 100, and combine the reactance between the generator and the transformer included in the first equivalent model, respectively. can

4 is a diagram illustrating an example of generating a second equivalent model according to an embodiment of the present invention.

Referring to FIG. 4 , the aggregate model generator 228 may generate a second equivalent model by collecting first equivalent models linked to individual lines and equivalence of the first equivalent models.

The set model generator 228 may calculate the reference capacity of the second equivalent model through Equation (9).

[Equation 9]

는 j번째 선로에 연계된 제2등가모델의 기준용량이고,

는 j번째 선로에 연계된 제1등가모델의 등가용량이고,

는 j번째 개별 선로에 연계된 발전기의 개수일 수 있다.here,

is the reference capacity of the second equivalent model connected to the j-th line,

is the equivalent capacity of the first equivalent model connected to the j-th line,

may be the number of generators connected to the j-th individual line.

The set model generator 228 may calculate the equivalent reactance of the second equivalent model through Equation (10).

[Equation 10]

는 j번째 개별 선로에 연계되는 제2등가모델의 등가 리액턴스이고,

은 j번째 개별 선로에 연계되는 제1등가모델의 리액턴스 결합이고,

는 j번째 개별 선로에 연계되는 제2등가모델의 기준용량일 수 있다.here,

is the equivalent reactance of the second equivalent model connected to the j-th individual line,

is the reactance coupling of the first equivalent model connected to the j-th individual line,

may be the reference capacity of the second equivalent model connected to the j-th individual line.

The collective model generator 228 may generate a second equivalent model by collecting a plurality of first equivalent models included in the power generation complex 100, and calculate the reactance of the first equivalent models included in the second equivalent model, respectively. can be combined

5 is a diagram illustrating an example of generating a third equivalent model according to an embodiment of the present invention.

Referring to FIG. 5 , the set model generator 228 may generate a third equivalent model by assembling the grid-connected transformer and the second equivalent models, and equalizing the grid-connecting transformer and the second equivalent models.

The set model generating unit 228 may combine the reactance of the generator of the second equivalent model and the grid-connected transformer as shown in Equation (11).

[Equation 11]

은 j번째 개별 선로에 연계된 제2등가모델의 발전기 및 계통연계용 변압기의 리액턴스 결합을 나타내고,

는 j번째 개별 선로에 연계된 제2등가모델의 등가 리액턴스이고,

는 j번째 개별 선로에 연계된 계통연계용 변압기의 리액턴스일 수 있다.here,

represents the reactance coupling of the generator and grid-connected transformer of the second equivalent model connected to the j-th individual line,

is the equivalent reactance of the second equivalent model connected to the j-th individual line,

may be the reactance of the grid connection transformer connected to the j-th individual line.

일 수 있다.In addition, the set model generator 228 may calculate the equivalent capacity of the third equivalent model, and the equivalent capacity of the third equivalent model is

can be

The collective model generation unit 228 may generate a third equivalent model by collecting generators and transformers of a plurality of second equivalent models included in the power generation complex 100, and a second equivalent model included in the third equivalent model. The reactance of each can be combined.

6 is a diagram illustrating an example of generating a fourth equivalent model according to an embodiment of the present invention.

Referring to FIG. 6 , the set model generating unit 228 may generate a fourth equivalent model by collecting third equivalent models connected in parallel and equalizing the third equivalent models.

The set model generator 228 may calculate the reference capacity of the fourth equivalent model through Equation 12.

[Equation 12]

는 제4등가모델의 기준용량이고,

는 j번째 선로에 연계되는 제3등가모델의 등가용량이고,

는 제3등가모델의 개수일 수 있다.here,

is the reference capacity of the 4th equivalent model,

is the equivalent capacity of the third equivalent model connected to the j-th line,

may be the number of third equivalent models.

The set model generator 228 may calculate the equivalent reactance of the fourth equivalent model through Equation (13).

[Equation 13]

는 제4등가모델의 등가 리액턴스이고,

은 j번째 개별 선로에 연계된 제3등가모델의 리액턴스 결합이고,

는 제4등가모델의 기준용량일 수 있다.here,

is the equivalent reactance of the fourth equivalent model,

is the reactance combination of the third equivalent model connected to the j-th individual line,

may be the reference capacity of the fourth equivalent model.

7 is a diagram illustrating an example of generating a fifth equivalent model according to an embodiment of the present invention.

Referring to FIG. 7 , the aggregate model generating unit 228 may generate a fifth equivalent model by linking the power system linkage transmission line with the fourth equivalent model.

The set model generator 228 may combine the reactance of the equivalent generator of the fourth equivalent model and the linked line as shown in Equation 14.

[Equation 14]

은 제5등가모델의 등가 발전기 및 연계선로의 리액턴스 결합을 나타내고,

는 제4등가모델의 등가 발전기의 리액턴스이고,

는 연계선로의 리액턴스일 수 있다.here,

represents the reactance coupling of the equivalent generator and the linked line of the 5th equivalent model,

is the reactance of the equivalent generator of the fourth equivalent model,

may be the reactance of the interconnection line.

일 수 있다.In addition, the set model generation unit 228 may calculate the equivalent capacity of the fifth equivalent model, and the equivalent capacity of the fifth equivalent model is

can be

8 is a diagram illustrating a method for generating a set model for renewable energy analysis according to an embodiment of the present invention.

Referring to FIG. 8 , the input unit 210 may receive detailed information of the renewable energy power generation complex 100 ( S100 ). The input unit 210 inputs characteristic information of individual renewable energy generators, generator step-up transformer information, grid connection transformer information, complex internal line configuration information, connected transmission line information, and connection point equivalent impedance information as detailed information can receive

The operation unit 220 may generate a set model by using the detailed information input to the input unit 210 (S200). The calculator 220 may generate a set model by performing equivalent modeling on the generator, the transformer, and the line using the detailed information.

The verification unit 240 may generate a detailed analysis model by using the detailed information provided from the input unit 210 (S300).

The verification unit 240 may verify the set model by comparing the set model generated by the operation unit 220 with the detailed analysis model generated by the verification unit 240 ( S400 ). The verification unit 240 can compare the change in the bus voltage at the connection point according to the level of the renewable energy generation output, compare the change in the renewable energy generation output in case of short-distance and short-distance system failure, and compare and analyze static/dynamic simulation results have. The verification unit 240 may verify the accuracy of the aggregate model by comparing the aggregate model with the detailed analysis model.

9 is a diagram illustrating in more detail a method of generating a set model using detailed information according to an embodiment of the present invention.

Referring to FIG. 9 , the calculator 220 may model an equivalent generator ( S210 ). The calculator 220 may calculate the total capacity of the power generation facility using Equation 1, and may calculate an output value of active power using Equation 2 above.

)를 계산할 수 있다. In addition, the calculator 220 may calculate the output value of the maximum reactive power using Equation 3, and may calculate the output value of the minimum reactive power using Equation 4 above. In addition, the calculator 220 may calculate the reference capacity of the equivalent generator using Equation 5, and the generator internal impedance (

) can be calculated.

The operation unit 220 may model the equivalent and linkage transformer (S220). The operation unit 220 may model the distribution transformer using the internal reactance, and may model the step-up transformer by summing the internal impedances of the equivalent generator. In addition, the calculation unit 220 may model the ancestral equipment by adding the ancestral equipment model to the primary side of the transformer.

The operation unit 220 may model the equivalent line (S230). The calculator 220 may calculate the line equivalent impedance using Equation 6, and may calculate the line equivalent susceptance using Equation 7 above.

일 수 있다.The operation unit 200 may generate a set model by collecting the modeling results ( S240 ). The calculating unit 200 may generate the first equivalent model by combining the individual generators and the ground transformers, and equivalizing the individual generators and the ground transformers. The calculator 200 may combine the generator and reactance as in Equation 8, and the equivalent capacity of the first equivalent model is

can be

The calculator 200 may generate a second equivalent model by collecting first equivalent models linked to individual lines and equivalence of the first equivalent models. The calculator 200 may calculate the reference capacity of the second equivalent model through Equation 9, and may calculate the equivalent reactance of the second equivalent model through Equation 10.

일 수 있다.In addition, the calculating unit 200 may generate a third equivalent model by collecting the grid-connected transformer and the second equivalent models, and equalizing the grid-connected transformer and the second equivalent models. The calculator 200 may combine the reactance of the generator and transformer of the second equivalent model as shown in Equation 11 above, and the equivalent capacity of the third equivalent model is

can be

The operation unit 200 may generate a fourth equivalent model by collecting third equivalent models connected in parallel, and equivalence of the third equivalent models. The calculator 200 may calculate the reference capacity of the fourth equivalent model through Equation 12, and may calculate the equivalent reactance of the fourth equivalent model through Equation 13.

일 수 있다.The calculation unit 200 may generate a fifth equivalent model by linking the power system-connected transmission line and the fourth equivalent model. The calculating unit 200 may combine the reactance of the equivalent generator and the linked line of the fourth equivalent model as shown in Equation 14 above, and the equivalent capacity of the fifth equivalent model is

can be

As described above, according to an embodiment of the present invention, an aggregate model for a renewable energy power generation complex is created, and the detailed analysis model generated using the information of the power generation complex is compared with the aggregate model for renewable energy analysis to verify the aggregate model. An apparatus and method for generating a set model can be realized.

Those skilled in the art to which the present invention pertains should understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential characteristics thereof, so the embodiments described above are illustrative in all respects and not restrictive. only do The scope of the present invention is indicated by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. .

210: input unit
220: arithmetic unit
222: generator modeling unit
224: transformer modeling unit
226: line modeling unit
228: set model generation unit
230: aggregation model output unit
240: verification unit
242: detailed analysis model generation unit
244: comparison unit

Claims (16)

an input unit into which detailed information of the renewable energy power generation complex is input;
an arithmetic unit for generating a set model by performing equivalence on a generator, a transformer, and a line using the detailed information;
a verification unit generating a detailed analysis model by using the detailed information, and verifying the aggregate model by comparing the detailed analysis model with the aggregate model; and
A set model generating apparatus for renewable energy analysis, including a set model output unit for outputting the set model.
According to claim 1,
The calculation unit collects individual generators and ground transformers, equalizes individual generators and transformers to generate a first equivalent model,
Combine the reactance of the generator and the transformer as shown in the following equation,

is the reactance combination of the generator and the transformer,

is the reactance of the generator,

is the reactance of the transformer, and the equivalent capacity of the first equivalent model is

An apparatus for generating a set model for the analysis of phosphorus renewable energy.
3. The method of claim 2,
The calculating unit collects the first equivalent models linked to individual lines, equalizes the first equivalent models to generate a second equivalent model,
Calculate the reference capacity of the second equivalent model through the following equation,

is the reference capacity of the second equivalent model connected to the j-th line,

is the equivalent capacity of the first equivalent model connected to the j-th line,

is the number of generators connected to the j-th individual line, a collective model generation device for renewable energy analysis.
4. The method of claim 3,
The calculator calculates the equivalent reactance of the second equivalent model through the following equation,

is the equivalent reactance of the second equivalent model connected to the j-th individual line,

is the reactance coupling of the first equivalent model connected to the j-th individual line,

is the reference capacity of the second equivalent model connected to the j-th individual line, a device for generating a collective model for renewable energy analysis.
5. The method of claim 4,
The calculation unit collects the grid-connected transformer and the second equivalent models, and equalizes the grid-connected transformer and the second equivalent models to generate a third equivalent model,
Combine the reactance of the generator and the grid-connected transformer of the second equivalent model as shown in the following equation,

is the reactance combination of the generator and the grid-connected transformer of the second equivalent model connected to the j-th individual line,

is the equivalent reactance of the second equivalent model connected to the j-th individual line,

is the reactance of the grid-connected transformer connected to the j-th individual line, and the equivalent capacity of the third equivalent model is

An apparatus for generating a set model for the analysis of phosphorus renewable energy.
6. The method of claim 5,
The operation unit collects the third equivalent models connected in parallel and equalizes the third equivalent models to generate a fourth equivalent model,
Calculate the reference capacity of the fourth equivalent model through the following equation,

is the reference capacity of the 4th equivalent model,

is the equivalent capacity of the third equivalent model connected to the j-th line,

is the number of third equivalent models, a set model generating device for renewable energy analysis.
7. The method of claim 6,
The calculator calculates the equivalent reactance of the fourth equivalent model through the following equation,

is the equivalent reactance of the fourth equivalent model,

is the reactance combination of the third equivalent model connected to the j-th individual line,

is a set model generating device for renewable energy analysis that is the reference capacity of the fourth equivalent model.
8. The method of claim 7,
The calculation unit generates a fifth equivalent model by linking the transmission line for power system connection and the fourth equivalent model,
Combine the reactance of the generator of the fourth equivalent model and the transmission line for connection as shown in the following equation,

is the reactance combination of the generator of the fourth equivalent model and the transmission line for connection,

is the generator reactance of the fourth equivalent model,

is the reactance of the transmission line for connection, and the equivalent capacity of the fifth equivalent model is

An apparatus for generating a set model for the analysis of phosphorus renewable energy.
Step of inputting detailed information of the renewable energy power generation complex;
generating a set model by performing equivalence on generators, transformers, and lines using the detailed information;
generating a detailed analysis model using the detailed information;
verifying the aggregate model by comparing the detailed analysis model with the aggregate model; and
A method for generating an aggregate model for renewable energy analysis, comprising outputting the aggregate model.
10. The method of claim 9,
The step of generating the set model comprises:
The first equivalent model is created by combining individual generators and ground transformers, and equivalence of individual generators and transformers,
Combine the reactance of the generator and the transformer as shown in the following equation,

is the reactance combination of the generator and the transformer,

is the reactance of the generator,

is the reactance of the transformer, and the equivalent capacity of the first equivalent model is

A method of generating a set model for phosphorus renewable energy analysis.
11. The method of claim 10,
The step of generating the set model comprises:
Collecting the first equivalent models linked to individual tracks, equalizing the first equivalent models to generate a second equivalent model,
Calculate the reference capacity of the second equivalent model through the following equation,

is the reference capacity of the second equivalent model connected to the j-th line,

is the equivalent capacity of the first equivalent model connected to the j-th line,

is the number of generators connected to the j-th individual line, a method of generating a set model for renewable energy analysis.
12. The method of claim 11,
The step of generating the set model comprises:
Calculate the equivalent reactance of the second equivalent model through the following equation,

is the equivalent reactance of the second equivalent model connected to the j-th individual line,

is the reactance coupling of the first equivalent model connected to the j-th individual line,

is the standard capacity of the second equivalent model connected to the j-th individual line, a method of generating a set model for renewable energy analysis.
13. The method of claim 12,
The step of generating the set model comprises:
Collecting the grid-connected transformer and the second equivalent models, and equalizing the grid-connected transformer and the second equivalent models to generate a third equivalent model,
Combine the reactance of the generator and the grid-connected transformer of the second equivalent model as shown in the following equation,

is the reactance combination of the generator and the grid-connected transformer of the second equivalent model connected to the j-th individual line,

is the equivalent reactance of the second equivalent model connected to the j-th individual line,

is the reactance of the grid-connected transformer connected to the j-th individual line, and the equivalent capacity of the third equivalent model is

A method of generating a set model for phosphorus renewable energy analysis.
14. The method of claim 13,
The step of generating the set model comprises:
Collecting the third equivalent models connected in parallel, equalizing the third equivalent models to generate a fourth equivalent model,
Calculate the reference capacity of the fourth equivalent model through the following equation,

is the reference capacity of the 4th equivalent model,

is the equivalent capacity of the third equivalent model connected to the j-th line,

is the number of third equivalent models, a method of generating aggregate models for renewable energy analysis.
15. The method of claim 14,
The step of generating the set model comprises:
Calculate the equivalent reactance of the fourth equivalent model through the following equation,

is the equivalent reactance of the fourth equivalent model,

is the reactance combination of the third equivalent model connected to the j-th individual line,

is a method for generating a set model for renewable energy analysis that is the reference capacity of the fourth equivalent model.
16. The method of claim 15,
The step of generating the set model comprises:
A 5th equivalent model is generated by linking the transmission line for power system connection with the 4th equivalent model,
Combine the reactance of the generator of the fourth equivalent model and the transmission line for connection as shown in the following equation,

is the reactance combination of the generator of the fourth equivalent model and the transmission line for connection,

is the generator reactance of the fourth equivalent model,

is the reactance of the transmission line for connection, and the equivalent capacity of the fifth equivalent model is

A method of generating a set model for phosphorus renewable energy analysis.

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