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Method and device for monitoring power of extra-high voltage connecting line

A tie-line power and monitoring device technology, applied in the field of electric power, can solve the problems of unable to analyze UHV power fluctuations in real time, unable to monitor UHV unstable power fluctuations in real time, unable to achieve real-time monitoring and early warning of UHV power fluctuations, etc.

Active Publication Date: 2011-06-29
BEIJIG YUPONT ELECTRIC POWER TECH +3
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Problems solved by technology

[0004] The existing UHV power control research is based on the original data of UHV operation, calculates UHV responsibility degree, and conducts statistics and assessment of UHV operation indicators on this basis. Unsteady power fluctuations of UHV cannot be monitored in real time. The analysis of UHV power fluctuations cannot be performed in real time, therefore, the requirements for real-time monitoring and early warning of UHV power fluctuations cannot be met

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  • Method and device for monitoring power of extra-high voltage connecting line
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  • Method and device for monitoring power of extra-high voltage connecting line

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] Such as figure 1 As shown in the figure, it is a flow chart of a power monitoring method for UHV tie-lines according to an embodiment of the present invention. The method includes:

[0017] 101. Obtain the power deviation ΔP of the UHV tie line and the control deviation ACE of the UHV area in real time.

[0018] 102. On a two-dimensional plane, take the UHV tie line power deviation ΔP as the horizontal axis and the UHV area control deviation ACE as the...

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Abstract

The embodiment of the invention provides a method and a device for monitoring the power of an extra-high voltage connecting line. The method for monitoring the power of the extra-high voltage connecting line comprises the following steps of: acquiring a power error delta P of the extra-high voltage connecting line and an extra-high voltage area control error (ACE) in real time; in a two-dimensional plane, acquiring current coordinates by taking the power error delta P of the extra-high voltage connecting line as an abscissa axis and taking the extra-high voltage area control error (ACE) as anordinate axis, and acquiring an advancing curve of the power error delta P of the extra-high voltage connecting line and the extra-high voltage area control error (ACE) by taking time scales as a curve advancing source; and when the advancing curve enters a correspondingly preset extra-high voltage running state area, a correspondingly preset monitoring strategy of the extra-high running state area is operated. The embodiment of the invention can realize visualization real-time monitoring and pre-warning of extra-high voltage power control.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a power monitoring method and device for UHV tie lines. Background technique [0002] The 1000KV Changzhi-Nanyang-Jingmen UHV line has a total length of 639KM. The fluctuation of its transmission power has a great impact on the 1000KV side voltage, which in turn will affect the safe and stable operation of the UHV system. According to the relevant calculation of the line operation, from the perspective of safety, the fluctuation value of the transmission power of the line must be controlled within the range of ±300MW. Therefore, real-time monitoring, analysis and early warning of UHV line power fluctuations have important practical significance. [0003] The 1000KV Changzhi-Nanyang-Jingmen UHV line is the first UHV line in China, and the real-time monitoring and analysis of the power control of the UHV line is a new topic. At present, only North China and Central China ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G01R21/00
Inventor 李杰张涛吴涛刘辉
Owner BEIJIG YUPONT ELECTRIC POWER TECH
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