Regional power grid double-main-transformer economic operation control method and system

A technology for economical operation and regional power grids, applied in the direction of power network operating system integration, information technology support system, single-network parallel feeding arrangement, etc., can solve the problem of frequent switching of transformer control switches, affecting the service life of transformers, and unfavorable use of transformers. To achieve online real-time economic operation and policy control, improve the level of economic operation, and avoid waste of resources

Active Publication Date: 2022-02-01
ZIYANG POWER SUPPLY COMPANY STATE GRID SICHUAN ELECTRIC POWER
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Problems solved by technology

[0006] However, when the transformer performs real-time switching in strict accordance with the actual economic operating point calculated by the above method, frequent switching of the transformer may occur near the economic operating point, and the load fluctuates up and down near the economic operating point, resulting in excessive switching times of the transformer control switch , affecting the service life of the transformer, which is not conducive to the healthy use of the transformer

Method used

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  • Regional power grid double-main-transformer economic operation control method and system
  • Regional power grid double-main-transformer economic operation control method and system
  • Regional power grid double-main-transformer economic operation control method and system

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Embodiment 1

[0099] Such as figure 1 As shown, a method for controlling the economic operation of dual main transformers in a regional power grid includes the following steps:

[0100] Step S1, obtain the rated parameters of the first main transformer and the second main transformer in a certain area and historical real-time operation data within a certain period of time (for example, half a year);

[0101] Step S2: Screen the acquired historical real-time operation data to obtain the data to be fitted, and calculate the actual loss of the two main transformers in single-row and parallel operation according to the data to be fitted and the rated parameters, and fit the two main transformers Actual loss curves of transformers operating in single row and parallel operation;

[0102] Among them, the requirements for transformer-related data are: the rated parameter data of the main transformer of each substation needs to be given, including rated no-load loss, rated load loss, and rated capa...

Embodiment 2

[0169] In addition, the present invention provides an economic operation control system for dual main transformers in a regional power grid, including a real-time data acquisition module, a database, a data processing module, a curve fitting module, a fluctuation interval calculation module, a control strategy generation module and a transformer switching control module,

[0170] Wherein, the real-time data acquisition module is used to collect the real-time operation data of two transformers and the rated parameters of the transformers, and store them in the database;

[0171] The data processing module is used to filter and calculate the collected real-time operation data and rated parameters to obtain the actual loss of the two main transformers when they are operated in parallel or in parallel;

[0172] The curve fitting module is used to obtain the actual loss according to the data processing module, with the actual load power as the abscissa and the actual loss as the ord...

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Abstract

The invention discloses a regional power grid double-main-transformer economic operation control method and system. The method comprises the following steps: respectively acquiring rated parameters and historical real-time operation data of two main transformers in a certain region; screening the obtained historical real-time operation data to obtain to-be-fitted data, respectively calculating actual losses of the two main transformers during single-row operation and parallel operation according to the to-be-fitted data and rated parameters, and fitting actual loss curves of the two main transformers during single-row operation and parallel operation; according to the three actual loss curves, calculating intersection points among the three actual loss curves, and obtaining economic operation points; calculating a fluctuation interval according to the economic operation points and the actual losses; and obtaining a real-time switching strategy of the transformer according to the fluctuation interval, and performing economic operation control on the two main transformers according to the real-time switching strategy for obtaining real-time load power of the operating transformer in real time. The frequent switching condition of the transformer is reduced according to the fluctuation interval, and healthy use of the transformer is facilitated.

Description

technical field [0001] The invention relates to the technical field of transformer switching, in particular to a control method and system for economical operation of dual main transformers in regional power grids. Background technique [0002] With the rapid development of regional power grids, the structure of power grids tends to be tighter, and the operating loss of power grids remains high for a long time. The safe and economical operation of regional power grids is facing great challenges. The main manifestations are: a large number of equipment in the power grid runs for a long time in an uneconomical state of light load or heavy load, and the loss of the regional power grid remains high. The transformer is one of the indispensable main equipment in the power system. The loss of the transformer accounts for a large proportion of the loss of the whole power system, which is far from being controlled to a reasonable level. In order to ensure the safety and reliability ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/14
CPCH02J3/38H02J3/144Y02B70/3225Y04S20/222Y04S10/50
Inventor 廖丽娟高虹霞高红均陈刚胡红彬谭翻邹海英何伶王惠刘琦
Owner ZIYANG POWER SUPPLY COMPANY STATE GRID SICHUAN ELECTRIC POWER
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