CN-121997700-A - Method, system, equipment and medium for locating and sizing hydrogen fuel cell integrated machine based on thermoelectric characteristics

CN121997700ACN 121997700 ACN121997700 ACN 121997700ACN-121997700-A

Abstract

The invention relates to the field of distributed hydrogen fuel cell site selection and volume determination optimization, in particular to a site selection and volume determination method, a system, equipment and a medium of a hydrogen fuel cell integrated machine based on thermoelectric characteristics, wherein the method comprises the steps of constructing an upper layer optimization model and a lower layer optimization model based on multidimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on a medium-low voltage distribution network; solving the upper layer optimization model based on the operation data of the medium-voltage distribution network to obtain a first solving result, solving the lower layer optimization model based on the first solving result and the operation data of the low-voltage distribution network to obtain a second solving result, according to the invention, the volume fixing and arrangement are carried out on the hydrogen fuel cell integrated machine according to the first solving result and the second solving result, the comprehensive utilization rate and the energy conversion efficiency of the hydrogen fuel cell integrated machine are obviously improved, and the intelligent and collaborative optimization operation of the distributed energy system in the electric heating integrated direction is realized.

Inventors

HE GUIXIONG
ZHANG LEI
CHEN LIJIA
LIAO MENGKE
GAO MING
KONG DEAN
ZHANG XINHE
Wu Naiyue
WANG SONGCEN
QU BO
JIANG LIMIN
ZHONG MING
KANG JIANDONG
HUA DONG

Assignees

中国电力科学研究院有限公司
国网新疆电力有限公司经济技术研究院
国家电网有限公司

Dates

Publication Date: 20260508
Application Date: 20251215

Claims (20)

1. The method for locating and sizing the hydrogen fuel cell integrated machine based on the thermoelectric characteristics is characterized by comprising the following steps of: An upper-layer optimization model is built based on the multi-dimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on the medium-voltage distribution network, and a lower-layer optimization model is built based on the multi-dimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on the low-voltage distribution network; And solving the upper-layer optimization model based on the operation data of the medium-voltage power distribution network to obtain a first solution result, solving the lower-layer optimization model based on the first solution result and the operation data of the low-voltage power distribution network to obtain a second solution result, and carrying out constant volume and arrangement on the hydrogen fuel cell integrated machine according to the first solution result and the second solution result.
2. The method for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric characteristics according to claim 1, wherein the multidimensional operation influencing factors of the position and the capacity of the hydrogen fuel cell integrated machine on the medium-voltage distribution network comprise the node voltage deviation rate of the medium-voltage distribution network, the network loss of the medium-voltage distribution network and the position of a heat supply network.
3. The method for locating and sizing the hydrogen fuel cell integrated machine based on the thermoelectric property according to claim 2, wherein the method is characterized in that an upper optimization model is constructed based on the multi-dimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on a medium-voltage distribution network, and specifically comprises the following steps: And constructing an upper optimization model by taking a weighted sum of the minimum grid loss and the minimum heat supply grid position of the minimum medium-voltage distribution network as an objective function.
4. The method for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric properties according to claim 3, wherein the expression of the objective function is: Wherein, the For the objective function of the upper layer optimization model, To minimize the per unit value of the sum of the node voltage deviations of the medium voltage distribution network, Is the per unit value of the minimum network loss of the medium-voltage distribution network, To minimize the per unit value of the heat supply network location, 、、 As the weight coefficient of the light-emitting diode, 。
5. The method for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric characteristics according to claim 4, wherein the calculation formula for minimizing the node voltage deviation rate of the medium-voltage distribution network and the minimum network loss of the medium-voltage distribution network and minimizing the position of the heat supply network is as follows: Wherein, the For the total number of nodes in the medium voltage distribution network, And For the head and end nodes of a line in a medium voltage distribution network, For the head-end node voltage of the line in the medium voltage distribution network, For the end node voltage of a line in a medium voltage distribution network, Is the cosine of the phase angle of the node voltage in the medium voltage distribution network, For line conductance between the head-end node and the end node of the medium voltage distribution network, To deploy the distance sum of the hydrogen fuel cell all-in-one nodes to the nearest heat supply network node, Is a node The distance to the nearest heat supply network node, For the sum of the node voltage deviation rates of the medium-voltage distribution network, For the medium-voltage distribution network loss, Is the rated value of the node voltage of the medium-voltage distribution network, Is the maximum value of the node voltage of the medium-voltage distribution network, The node voltage of the medium-voltage distribution network is the minimum value.
6. The method for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric characteristics according to claim 1, wherein the multidimensional operation influencing factors of the position and the capacity of the hydrogen fuel cell integrated machine on the low-voltage distribution network comprise the node voltage deviation rate of the low-voltage distribution network and the network loss of the low-voltage distribution network.
7. The method for locating and sizing the hydrogen fuel cell integrated machine based on the thermoelectric characteristics according to claim 6, wherein the method is characterized in that the method for constructing the lower optimization model based on the multi-dimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on the low-voltage distribution network is specifically as follows: And constructing a lower-layer optimization model by taking the minimum node voltage deviation rate sum of the low-voltage distribution network and the minimum network loss weighted sum of the low-voltage distribution network as an objective function.
8. The method for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric characteristics according to claim 7, wherein the expression of the objective function is: Wherein, the For the objective function of the underlying optimization model, To minimize the per unit value of the sum of the node voltage deviations of the low voltage distribution network, Is the per unit value of the minimum network loss of the low-voltage power distribution network, And As the weight coefficient of the light-emitting diode, =1。
9. The method for locating and sizing the hydrogen fuel cell integrated machine based on thermoelectric characteristics according to claim 8, wherein the calculation formula of the node voltage deviation rate of the low-voltage distribution network and the network loss of the low-voltage distribution network is as follows: Wherein, the For the sum of the node voltage deviation rates of the low-voltage distribution network, Is the network loss of the low-voltage distribution network, For the total number of nodes in the low voltage distribution network, For the head-end node voltage of the line in the low-voltage distribution network, For the end node voltage of the line in the low voltage distribution network, Is the cosine of the phase angle of the node voltage in the low-voltage distribution network, For line conductance between the head-end node and the end node of the low-voltage distribution network, Is a node voltage rated value of the low-voltage distribution network, Is the maximum value of the node voltage of the low-voltage distribution network, Is the node voltage minimum value of the low-voltage distribution network.
10. The method for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric properties of claim 1, wherein the constraints of the lower optimization model comprise one or more of electrical hydrogen production constraints, hydrogen storage tank constraints, and hydrogen fuel cell stack constraints.
11. The method for locating and sizing the hydrogen fuel cell integrated machine based on the thermoelectric characteristics according to claim 1, wherein the method for solving the upper-layer optimization model based on the operation data of the medium-voltage distribution network to obtain a first solution result comprises the following steps: And obtaining a first solving result comprising the position and the capacity of each hydrogen fuel cell integrated machine in the medium-voltage distribution network by adopting a genetic algorithm based on the operation data of the medium-voltage distribution network and using an objective function of an upper-layer optimization model as an optimization target.
12. The method for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric characteristics according to claim 1 or 11, wherein the step of solving the lower optimization model based on the first solution result and the operation data of the low-voltage power distribution network to obtain a second solution result, and sizing and arranging the hydrogen fuel cell integrated machine according to the first solution result and the second solution result specifically comprises the steps of: and solving a tide equation by adopting a Newton-Laporton algorithm based on the operation data of the low-voltage power distribution network after the medium-voltage power distribution network is added into the hydrogen fuel cell integrated machine, and obtaining a second solving result comprising the position and the capacity of the hydrogen fuel cell integrated machine in the low-voltage power distribution network.
13. The utility model provides a hydrogen fuel cell all-in-one's system of locating and sizing based on thermoelectric characteristic which characterized in that includes: The model construction module is used for constructing an upper-layer optimization model based on the multi-dimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on the medium-voltage power distribution network and constructing a lower-layer optimization model based on the multi-dimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on the low-voltage power distribution network; And the solving module is used for solving the upper layer optimization model based on the operation data of the medium-voltage power distribution network to obtain a first solving result, solving the lower layer optimization model based on the first solving result and the operation data of the low-voltage power distribution network to obtain a second solving result, and carrying out volume fixing and arrangement on the hydrogen fuel cell integrated machine according to the first solving result and the second solving result.
14. The system of claim 13, wherein the factors affecting multidimensional operation of the medium voltage distribution network by the position and capacity of the hydrogen fuel cell integrated machine in the model building module include medium voltage distribution network node voltage deviation rate, medium voltage distribution network loss and heat supply network position.
15. The system for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric characteristics according to claim 14, wherein the model construction module constructs an upper layer optimization model based on the multidimensional operation influence factors of the position and capacity of the hydrogen fuel cell integrated machine on the medium voltage distribution network, specifically: And constructing an upper optimization model by taking a weighted sum of the minimum grid loss and the minimum heat supply grid position of the minimum medium-voltage distribution network as an objective function.
16. The thermoelectric property based hydrogen fuel cell integrated machine location and volume determination system of claim 15, wherein the expression of the objective function in the model building module is: Wherein, the For the objective function of the upper layer optimization model, To minimize the per unit value of the sum of the node voltage deviations of the medium voltage distribution network, Is the per unit value of the minimum network loss of the medium-voltage distribution network, To minimize the per unit value of the heat supply network location, 、、 As the weight coefficient of the light-emitting diode, 。
17. The thermoelectric property-based hydrogen fuel cell integrated machine location and volume determining system according to claim 16, wherein the calculation formula for minimizing the node voltage deviation rate and the minimum network loss of the medium-voltage distribution network and the minimum heat supply network position in the model building module is as follows: Wherein, the For the total number of nodes in the medium voltage distribution network, And For the head and end nodes of a line in a medium voltage distribution network, For the head-end node voltage of the line in the medium voltage distribution network, For the end node voltage of a line in a medium voltage distribution network, Is the cosine of the phase angle of the node voltage in the medium voltage distribution network, For line conductance between the head-end node and the end node of the medium voltage distribution network, To deploy the distance sum of the hydrogen fuel cell all-in-one nodes to the nearest heat supply network node, Is a node The distance to the nearest heat supply network node, For the sum of the node voltage deviation rates of the medium-voltage distribution network, For the medium-voltage distribution network loss, Is the rated value of the node voltage of the medium-voltage distribution network, Is the maximum value of the node voltage of the medium-voltage distribution network, The node voltage of the medium-voltage distribution network is the minimum value.
18. The system of claim 13, wherein the factors affecting the multidimensional operation of the low voltage distribution network by the position and the capacity of the hydrogen fuel cell integrated machine in the model building module include a node voltage deviation rate of the low voltage distribution network and a network loss of the low voltage distribution network.
19. The system for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric characteristics according to claim 18, wherein the model construction module constructs a lower layer optimization model based on the multidimensional operation influence factors of the position and capacity of the hydrogen fuel cell integrated machine on the low-voltage distribution network, specifically: And constructing a lower-layer optimization model by taking the minimum node voltage deviation rate sum of the low-voltage distribution network and the minimum network loss weighted sum of the low-voltage distribution network as an objective function.
20. The system for locating and sizing a hydrogen fuel cell integrated machine based on thermoelectric properties according to claim 19, the method is characterized in that the expression of the objective function in the model construction module is as follows: Wherein, the For the objective function of the underlying optimization model, To minimize the per unit value of the sum of the node voltage deviations of the low voltage distribution network, Is the per unit value of the minimum network loss of the low-voltage power distribution network, And As the weight coefficient of the light-emitting diode, =1。

Description

Method, system, equipment and medium for locating and sizing hydrogen fuel cell integrated machine based on thermoelectric characteristics Technical Field The invention relates to the field of distributed hydrogen fuel cell site selection and volume determination optimization, in particular to a site selection and volume determination method, a system, equipment and a medium of a hydrogen fuel cell integrated machine based on thermoelectric characteristics. Background At present, a medium-low voltage power distribution network faces multiple challenges, such as the problems of increased new energy access, reduced voltage stability, increased line loss and the like, and a more efficient energy configuration scheme is urgently needed to improve the running quality of the system. The traditional distribution network site selection and capacity configuration method mostly takes the characteristics of a power grid as an optimization target, ignores the influence of a cogeneration system on regional energy efficiency, and cannot fully exert the advantage of multi-energy complementation. The hydrogen fuel cell has the characteristics of cleanness, high efficiency and flexibility, can be connected into an electric power system, can supply energy for a heat supply network, and is an ideal carrier for realizing thermoelectric cooperative optimization. However, the defects that the current hydrogen fuel cell arrangement cannot simultaneously consider the influence of the hydrogen fuel cell arrangement on a power grid and a heat supply grid, the model optimization target is single, the capacity configuration lacks dynamic adaptability and the like are common in the current hydrogen fuel cell arrangement. The existing research is often limited to a single time point, and ignores the influence of user load fluctuation and distributed power generation uncertainty, so that the optimization result has no feasibility and adaptability. Therefore, how to maximize the comprehensive utilization efficiency of the hydrogen fuel cell, promote new energy consumption and enhance the operation safety and economy of the power distribution network is a problem to be solved. Disclosure of Invention In order to solve the technical problems existing in the existing distribution network site selection and capacity configuration process, the invention provides a site selection and capacity determination method of a hydrogen fuel cell integrated machine based on thermoelectric characteristics, which comprises the following steps: An upper-layer optimization model is built based on the multi-dimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on the medium-voltage distribution network, and a lower-layer optimization model is built based on the multi-dimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on the low-voltage distribution network; And solving the upper-layer optimization model based on the operation data of the medium-voltage power distribution network to obtain a first solution result, solving the lower-layer optimization model based on the first solution result and the operation data of the low-voltage power distribution network to obtain a second solution result, and carrying out constant volume and arrangement on the hydrogen fuel cell integrated machine according to the first solution result and the second solution result. Optionally, the multidimensional operation influencing factors of the position and the capacity of the hydrogen fuel cell integrated machine on the medium-voltage distribution network comprise the node voltage deviation rate of the medium-voltage distribution network, the network loss of the medium-voltage distribution network and the position of a heat supply network. Optionally, the method comprises the steps of constructing an upper layer optimization model based on multidimensional operation influence factors of the position and the capacity of the hydrogen fuel cell integrated machine on the medium-voltage distribution network, and specifically comprises the following steps: And constructing an upper optimization model by taking a weighted sum of the minimum grid loss and the minimum heat supply grid position of the minimum medium-voltage distribution network as an objective function. Optionally, the expression of the objective function is: Wherein, the For the objective function of the upper layer optimization model,To minimize the per unit value of the sum of the node voltage deviations of the medium voltage distribution network,Is the per unit value of the minimum network loss of the medium-voltage distribution network,To minimize the per unit value of the heat supply network location,、、As the weight coefficient of the light-emitting diode,。 Optionally, a calculation formula for minimizing the node voltage deviation rate of the medium-voltage distribution network, the min