Microgrid multi-objective economic dispatching method and device considering demand side response

Abstract

The invention provides a multi-objective economic dispatching method and device for micro-grid which takes the demand side response, and includes economic dispatching modeling, algorithm programming and simulation calculation. Under the premise of considering the economy, environmental protection, high efficiency and safety of microgrid operation, the economic dispatching model has the lowest integrated operating cost, optimal demand side response and microgrid and large distributed power supply in the microgrid. The minimum power fluctuation of the grid tie line is the objective function; thealgorithm programming uses Monte Carlo simulation, multi-target crowd search algorithm and fuzzy membership function to solve the established model; the simulation calculation uses the known initialconditions and other information to A specific microgrid system performs simulation calculations and visualizes the results. The invention achieves the technical effect of improving the comprehensiveperformance of multi-objective economic dispatch.

Description

technical field

[0001] The invention relates to the technical field of energy Internet, in particular to a method and device for multi-objective economic dispatching of microgrids considering demand side response. Background technique

[0002] In recent years, with the increasing scarcity of global resources and the increasingly serious ecological pollution, microgrids, as an effective supplementary means of main grid operation, are increasingly favored by countries all over the world. The microgrid can be regarded as a small low-voltage network, which is composed of loads, distributed power sources, energy storage devices and converters, and is connected to the main grid as an independently controllable load. Its operation modes include off-grid (island) and There are two types of grid connection, and you can switch freely between the two methods. Compared with the traditional power generation system, because the microgrid contains a large number of distributed power sourc...

Examples

Embodiment 1

[0035] This embodiment provides a multi-objective economic scheduling method for microgrids considering demand side response, please refer to figure 1 , the method includes:

[0036] First execute step S1: establish a microgrid multi-objective economic dispatch model and constraint conditions considering the demand side response, wherein the multi-objective economic dispatch model includes the first objective function, the second objective function and the third objective function, the first objective function is the cumulative sum of the difference between microgrid load and wind-solar new energy generation after demand response; the second objective function is an economic index, which represents the comprehensive effect of demand response, energy storage, diesel engine, large power grid connection line and electric vehicle discharge. The operating cost is the minimum, and the third objective function is the minimum power fluctuation of the tie line.

[0037] Specifically, ...

Embodiment 2

[0153] This embodiment provides a microgrid multi-objective economic scheduling device considering demand side response, please refer to Figure 9 , the device consists of:

[0154] The dispatching model building module 201 is used to establish a microgrid multi-objective economic dispatch model and constraint conditions considering the demand side response, wherein the multi-objective economic dispatch model includes a first objective function, a second objective function and a third objective function, the second The first objective function is the cumulative sum of the difference between the microgrid load and wind and new energy generation after demand response; the second objective function is the economic index, which represents demand response, energy storage, diesel engine, large power grid connection line and electric vehicle discharge station. The resulting comprehensive operating cost is the smallest, and the third objective function is the smallest power fluctuatio...

technical field

[0001] The invention relates to the technical field of energy Internet, in particular to a method and device for multi-objective economic dispatching of microgrids considering demand side response. Background technique

[0002] In recent years, with the increasing scarcity of global resources and the increasingly serious ecological pollution, microgrids, as an effective supplementary means of main grid operation, are increasingly favored by countries all over the world. The microgrid can be regarded as a small low-voltage network, which is composed of loads, distributed power sources, energy storage devices and converters, and is connected to the main grid as an independently controllable load. Its operation modes include off-grid (island) and There are two types of grid connection, and you can switch freely between the two methods. Compared with the traditional power generation system, because the microgrid contains a large number of distributed power sourc...

Examples

Embodiment 1

[0035] This embodiment provides a multi-objective economic scheduling method for microgrids considering demand side response, please refer to figure 1 , the method includes:

[0036] First execute step S1: establish a microgrid multi-objective economic dispatch model and constraint conditions considering the demand side response, wherein the multi-objective economic dispatch model includes the first objective function, the second objective function and the third objective function, the first objective function is the cumulative sum of the difference between microgrid load and wind-solar new energy generation after demand response; the second objective function is an economic index, which represents the comprehensive effect of demand response, energy storage, diesel engine, large power grid connection line and electric vehicle discharge. The operating cost is the minimum, and the third objective function is the minimum power fluctuation of the tie line.

[0037] Specifically, ...

Embodiment 2

[0153] This embodiment provides a microgrid multi-objective economic scheduling device considering demand side response, please refer to Figure 9 , the device consists of:

[0154] The dispatching model building module 201 is used to establish a microgrid multi-objective economic dispatch model and constraint conditions considering the demand side response, wherein the multi-objective economic dispatch model includes a first objective function, a second objective function and a third objective function, the second The first objective function is the cumulative sum of the difference between the microgrid load and wind and new energy generation after demand response; the second objective function is the economic index, which represents demand response, energy storage, diesel engine, large power grid connection line and electric vehicle discharge station. The resulting comprehensive operating cost is the smallest, and the third objective function is the smallest power fluctuatio...

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