Unlock instant, AI-driven research and patent intelligence for your innovation.

Cascade hydropower day-ahead scheduling method considering power grid section constraints

A scheduling method and cascade technology, applied in instrumentation, data processing applications, forecasting, etc., can solve problems such as complex transmission section constraints

Pending Publication Date: 2020-09-04
国家电网有限公司西南分部 +1
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different grid structures and load requirements of different power grids, the access of cascade hydropower will have different impacts on the operation of the power grid. The active power of hydropower is also related to the active power of generators other than hydropower and grid load demand, so the transmission section constraints in the model will become more complicated, and the operation strategy of cascade hydropower stations must ensure the safety and stability of the grid, so , it is necessary to study the cascade optimal dispatching model that adapts to hydropower development and power grid demand

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cascade hydropower day-ahead scheduling method considering power grid section constraints
  • Cascade hydropower day-ahead scheduling method considering power grid section constraints
  • Cascade hydropower day-ahead scheduling method considering power grid section constraints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0070] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0071] Such as figure 1 As shown, a cascade hydropower day-ahead scheduling method considering grid section constraints includes the following steps:

[0072] S1. Establish a cascade hydropower optimization model. The objective function of the model includes the maximum cascade power generation and the minimum total variance of the residual load of the grid:

[0073] The maximum cascade power generation is expressed as:

[0074]

[0075] The minimum total variance ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of cascade reservoir group power generation optimal scheduling, and particularly relates to a cascade hydropower day-ahead scheduling method considering power grid section constraints. Load flow calculation is introduced into the model; the influence of cascade hydropower access on the power grid is studied; in order to avoid the influence of multi-time calculation of system power flow on the model solving efficiency, a hydroelectric transfer distribution coefficient is provided to represent the relationship between the active power of a specific power transmission section of a power grid and the active power of cascade hydropower stations; and finally, the model is solved by adopting an improved particle swarm algorithm, and the water level, the output and the cascade power generation capacity of the cascade power station are output, so that the safety of the power grid can be improved while the power generation benefit of the hydropower station is ensured.

Description

technical field [0001] The invention belongs to the field of cascade reservoir group power generation optimization dispatching, and specifically relates to a cascade hydropower day-ahead dispatching method considering grid section constraints. Background technique [0002] Restricted by the distribution conditions of water resources, large-scale centralized development is currently the main form of cascade hydropower development. The river basin cascade power station composed of a large number of hydropower stations is sent to different power grids through outgoing channels of different voltage levels, and then sent to the load center for consumption. With the gradual increase in the number and installed capacity of cascade hydropower stations, the impact of cascade hydropower stations on the power system is also increasing. There is a complex coupling relationship between the upstream and downstream of the cascade hydropower station, which makes it extremely difficult to f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/067G06Q50/06
Inventor 黄媛路亮刘俊勇周泓刘友波蔡绍荣江栗
Owner 国家电网有限公司西南分部