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Coordinating economic dispatching method for power system containing large-scale wind power based on risk control

A power system and risk control technology, applied in information technology support systems, instruments, climate change adaptation, etc., can solve the problems of non-repeatability of calculation results and large workload of Monte Carlo method.

Inactive Publication Date: 2015-09-16
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

Since the calculation error of the Monte Carlo method is inversely proportional to the square root of the number of samples, the calculation workload of the Monte Carlo method is large, and the calculation results are not repeatable.

Method used

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  • Coordinating economic dispatching method for power system containing large-scale wind power based on risk control
  • Coordinating economic dispatching method for power system containing large-scale wind power based on risk control
  • Coordinating economic dispatching method for power system containing large-scale wind power based on risk control

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Embodiment Construction

[0079] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the...

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Abstract

The invention discloses a coordinating economic dispatching method for a power system containing large-scale wind power based on risk control, comprising the following steps: collecting historical weather data and historical load curve data, and predicting the weather and wind speed in the remaining period of time of next 24 hours; predicting the load and wind power of the previous day, and obtaining a wind power output curve, a load curve and a net load curve in the remaining period of time of next 24 hours; modeling the net load, and obtaining the standard deviation of net load prediction error and the net load values in different scenarios; giving the risk degree, calculating the risk reserve in the remaining period of time of next 24 hours, and obtaining a risk reserve curve; calculating the risk reserve capacity, and obtaining a risk capacity curve; correcting a unit combination plan; and calculating the expected value of operation cost of the power system in the remaining period of time of next day. A strategy based on coordination between previous day economic dispatching and current day rolling economic dispatching is introduced, which not only can ensure that the operation risk of the power system is controllable, but also can ensure the operation economy of the power system.

Description

technical field [0001] The invention relates to the technical field of electric power system economic dispatching, in particular to a method for coordinated economic dispatching of electric power systems including large-scale wind power based on risk control. Background technique [0002] In the traditional power system, the unstable factors of the system mainly come from the load side, and the output of the power generation side is controllable, and the random changes of the load side are dealt with by adjusting the output of the unit on the power generation side. After large-scale wind power is connected to the grid, due to the characteristics of wind power output volatility and low prediction accuracy, some power output on the power generation side is uncontrollable, and random changes in this part of uncontrollable power and load require controllable power regulation output to cooperate with the operation , adding new uncertain factors to the operation of the power syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCY04S10/50Y02A30/00
Inventor 王志磊胡俊鹏赵勇邵传军苗金峰李静王延安刘思华李东升吴倩峰魏玉荣岳炜莉戎晓雪张雯潘筱侯王宾宋向前杨涛
Owner STATE GRID SHANDONG ELECTRIC POWER
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