Source network coordination peak shaving method giving consideration to DC outwards-transmitted power regulating characteristics

A technology of external power and adjustment characteristics, which is applied in the field of new energy peak shaving in power grids, and can solve the problem of ignoring the adjustable characteristics of DC external power, the peak-shaving capability of DC external power cannot be fully utilized, and the coordination of conventional power and external power Insufficient and in-depth research on peak shaving operation

Active Publication Date: 2018-08-24
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]At present, most of the researches on the peak regulation of wind power connected to the power grid focus on the exploration of the peak regulation potential of conventional power sources and adjustable loads. The external power meter ignores the adjustable characteristics of DC external power, and the research on the coordinated peak-shaving operation of conventional power and external power is not sufficient and in-depth, so that the peak-shaving capability of DC external power cannot be fully utilized

Method used

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  • Source network coordination peak shaving method giving consideration to DC outwards-transmitted power regulating characteristics
  • Source network coordination peak shaving method giving consideration to DC outwards-transmitted power regulating characteristics
  • Source network coordination peak shaving method giving consideration to DC outwards-transmitted power regulating characteristics

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Embodiment 1

[0037] figure 1 It is a flow chart of the source-network coordinated peak-shaving method considering the adjustment characteristics of the DC external transmission power in the present invention. figure 1 Among them, the source-network coordinated peak-shaving method considering the adjustment characteristics of DC external power provided by the present invention includes:

[0038] S1: Calculate and form the system equivalent load change curve according to the wind power output and load forecast value before the system;

[0039] S2: On the basis of step S1, establish peak shaving models under different peak shaving modes;

[0040] S3: Under the different peak-shaving modes in step S2, solve the peak-shaving model, and formulate an adjustment plan for conventional energy output and DC output power.

[0041] S4: On the basis of step S3, modify the system's operation plan for the day to obtain the system's peak-shaving operation arrangement.

[0042] Said S1 comprises the foll...

Embodiment 2

[0084] figure 2 It is a schematic diagram of the peak-shaving method of the source-network coordinated peak-shaving method considering the adjustment characteristics of DC external power in the present invention, image 3 It is a schematic diagram of Gansu Hexi Power Grid, a large-scale wind power base with DC external transmission channels described in the embodiment of the present invention. Taking the data on April 5 as an example to analyze, the source-network coordination regulation that considers the adjustment characteristics of DC external transmission power provided by the present invention Peak methods include:

[0085] S1: Take the wind power output in S101 as a negative load, and superimpose it with the load curve of the day to form an equivalent load curve such as Figure 4 As shown, the specific data are shown in Table 1:

[0086] Table 1 Equivalent load calculation data on April 5

[0087]

[0088]

[0089] S2: Determine the duration of the day's "peak...

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Abstract

The invention discloses a source network coordination peak shaving method giving consideration to DC outwards-transmitted power regulating characteristics, and belongs to the technical field of grid new energy peak shaving. The method comprises the steps: determining an equivalent load change curve of a system according to the current wind power output and load prediction value of the system; establishing a peak shaving model in different peak shaving modes; formulating an adjustment plan of the conventional energy output and the DC outwards-transmitted power under different peak shaving modes; correcting a daily operation plan of the system, and obtaining a system peak shaving operation plan. The method provided by the invention can fully explore the peak shaving potential of the system,achieves the planning of the outwards-transmitted power of the system and the conventional energy output, and provides an idea for the solving of a wind power consumption constraint problem.

Description

technical field [0001] The invention belongs to the technical field of power grid new energy peak shaving, and in particular relates to a method for coordinating and participating in peak shaving of DC external power and conventional power supply. Background technique [0002] As the scale of wind power grid connection increases, the randomness and volatility of wind power make the problem of peak regulation in the power grid gradually complicated, and the difficulty of peak regulation increases. At the same time, in some large-scale wind power bases in my country, there are DC transmission channels with certain regulation characteristics; the conventional power supply in the wind power access area also plays a huge role in the system peak regulation process. It is of great significance to fully tap the peak-shaving potential of the system with wind power connected to it, and to coordinate the peak-shaving with the conventional power supply by using the DC output power, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
CPCH02J3/46H02J2203/20Y02E10/76
Inventor 荣俊杰刘文颖汪宁渤蔡万通周强朱丹丹陈钊夏鹏王方雨马明吕良丁坤张雨薇赵龙王贤郭虎王明松姚春晓张健美曾文伟王定美张尧翔许春蕾李宛齐聂雅楠冉忠
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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