A state estimation data correction system and method with improved accuracy

A state estimation and data correction technology, applied in information technology support systems, electrical components, circuit devices, etc., can solve problems such as data failure, achieve the effect of improving functional accuracy and avoiding data failure

Active Publication Date: 2015-09-02
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0006] The above method enhances the accuracy of the state estimation function, but there is still the possibility of data failure in the process of uploading data from the substation to the master station

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  • A state estimation data correction system and method with improved accuracy

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Embodiment Construction

[0042] The implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0043] A state estimation data correction system for improved accuracy, such as figure 1 As shown, it includes the state estimation data correction system connected to the Ethernet, the real-time database of the energy management system (EMS) of the power company’s dispatch control center connected to the Ethernet as the main data input source, and the Dynamic monitoring system, regional power grid data acquisition and supervisory control (SCADA) system, electric energy acquisition system, power transmission and transformation online monitoring system, production emergency repair command platform, and power grid dispatching secondary system operation management and engineering dynamic management system,

[0044...

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Abstract

The present invention relates to a state estimation data correction system and method with improved accuracy. The system includes a data correction system, a real-time database, a dynamic monitoring system, a data acquisition and monitoring control system, an electric energy acquisition system, an online monitoring system for power transmission and transformation, and a command platform and a dynamic management system; the method includes the steps of: updating the data structure of the bad data list; updating the bad data list; finding data from the associated information I; recording information I as x1, x2, x3, x4 and judging and processing; The value in the data list is returned as an accurate measurement value, and the conventional state estimation is carried out; the associated information II is searched and the data is appended to the field data of the judgment result description field of the bad data list. The invention improves the precision of state estimation and avoids the shortcoming of data failure.

Description

technical field [0001] The invention belongs to the technical field of energy management and state estimation in electric power systems, and specifically relates to a state estimation data correction system and method for improving accuracy. Background technique [0002] The current power system dispatching automation system of the power dispatching control center uses the energy management system (EMS) as the technical support platform. EMS includes data acquisition and supervisory control (SCADA), state estimation (SE) functions, and also includes power generation planning, automatic generation control (AGC), automatic voltage control (AVC), static safety analysis (SA), dispatcher power flow (DTS ) and other advanced application functions. Among them, the state estimation is based on the SCADA function, which is the basis of other advanced applications of EMS. [0003] State estimation is based on network wiring information, network parameters, and a set of redundant ana...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCY04S40/124Y02E60/00
Inventor 袁世强郭凌旭郗洪涛李晓辉李美强杜明王瑶李树青
Owner STATE GRID CORP OF CHINA
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