Power system control method considering wind power and load uncertainty
A power system, uncertain technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems such as the inability to describe the random characteristics of loads
Active Publication Date: 2017-01-04
CHONGQING UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a power system control method that takes into account the uncertainty of wind power and load. The method takes into account the influence of the uncertainty of load and wind power, and establishes The unit combination model influenced by wind power uncertainty overcomes the inadequacy that the deterministic load model cannot describe the random characteristics of load
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0057] The specific embodiments and working principles of the present invention will be further described in detail below.
[0058] The power system selected in this embodiment includes 10 wind turbines, and the parameters of each unit are shown in Table 1(a) and Table 1(b). The positive number in the initial on-off state in the table indicates the time the unit has been running continuously. , and a negative number indicates the time the unit has been continuously shut down.
[0059] Then, the following technical solutions are used to control the wind turbines in the power system. The specific steps are:
[0060] Step 1: Input the load data of each period in the power system in 24 hours and the corresponding forecast data of the power of each wind turbine, as shown in Table 2, according to the data in the table, establish the uncertainty of the power system load and the power of the wind turbine within the period t The sex model is as follows:
[0061] Load probability dist...
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
Login to View More Abstract
The invention discloses a power system control method considering the uncertainty of wind power and load. The method describes the uncertainty of load and wind power in terms of scenarios, and uses the weighted sum of expected value and variance of power generation cost in all scenarios as the objective function , establish an optimal dispatching model of units considering the influence of load and wind power uncertainty, and use the improved particle swarm optimization algorithm to solve the optimal start-stop scheme of the unit combination, and then control the wind turbines in the power system. Its remarkable effect is: taking into account the uncertain influence of load and wind power, a unit combination model considering the influence of load and wind power uncertainty is established, which overcomes the deficiency that the deterministic load model cannot describe the random characteristics of load; The particle swarm optimization algorithm can obtain the optimal start-stop scheme and control the power system, which can make the power system effectively take into account the influence of load and wind power uncertainty.
Description
technical field [0001] The invention relates to the technical field of power system unit combination, in particular, it relates to a power system control method considering wind power and load uncertainty. Background technique [0002] The unit combination problem of the power system refers to determining the units that are put into operation at each time period in a certain dispatching cycle under the constraint conditions of satisfying the system load balance, backup requirements, and unit output limits, and reasonably allocating the output of each operating unit to achieve the overall goal of the system. The goal with the least running cost. In recent years, with the rapid development of new energy technologies, a large number of new energy sources, especially wind power, have been integrated into the grid. Compared with traditional power generation methods, wind power has the advantages of no pollution. As an inexhaustible renewable energy source, it is gradually favore...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/38
Inventor 胡博谢开贵邓勇余娟任洲洋贺小辉董吉哲
Owner CHONGQING UNIV