Transforming plant voltage reactive integrated control system acting equipment selection technology

A technology of voltage reactive power and comprehensive control, which is applied in reactive power compensation, AC network voltage adjustment, reactive power adjustment/elimination/compensation, etc., to achieve the effects of programming realization, convenient expansion, and clear organization

Active Publication Date: 2008-04-09
NARI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the action delay at the moment when the capacitor is withdrawn is 600 seconds

Method used

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  • Transforming plant voltage reactive integrated control system acting equipment selection technology
  • Transforming plant voltage reactive integrated control system acting equipment selection technology
  • Transforming plant voltage reactive integrated control system acting equipment selection technology

Examples

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Embodiment

[0131] Taking the dual main transformer parallel system as an example, the system structure is shown in Figure 10, which is an example diagram of the primary wiring of the voltage and reactive power integrated control system in the present invention. The main transformer T1 runs in parallel with the secondary section bus (the main transformer T2 is out of service). All four capacitors can be used (C1, C3, C4 withdraw, C2 cast). It can be predicted that after the action of each reactive device, the moving position of the system operating point is shown in Figure 11, and the influence of the reactive device on each controlled quantity is shown in Figure 12. Fig. 11 is a schematic diagram of the deviation position prediction of the operating point of each reactive device in the present invention, and Fig. 12 is a schematic diagram of the influence of the reactive device on the controlled quantity in the present invention.

[0132] In the voltage and reactive power intelligent co...

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Abstract

The invention relates to a technique for selecting action equipment for a substation voltage reactive power comprehensive control system. The invention is characterized in that in accordance with the operation requirement, voltage and reactive operation ranges are determined and an ideal operation interval is divided in a system operation region; inside the ideal operation interval, the voltage and reactive are qualified without controlling; when the system operates outer the ideal interval, the voltage and reactive exceed the limit; a serve value supplied by the reactive equipment to the system is calculated, the serve value and the action delay are weighed and a controllable equipment is initially selected; combined with the equipment ordering method, the action equipment and the control direction thereof are finally selected. The invention solves the equipment selection problem between the main transformer and capacitor/reactor, solves the equipment selection problem of unequal capacity capacitor/reactor, and solves the equipment selection problem under the multi-device unequal delay; the action of invention is reasonable; the invention abandons the regional diagram control mode and avoids the problem of trans-region and regional boundary division. The invention changes the weights and properties of the voltage and the reactive power and is capable of suitable for different control modes.

Description

technical field [0001] The invention relates to a control or adjustment technology of an electromechanical transformer, in particular to a selection technology of operating equipment for a substation voltage and reactive power comprehensive control system, and belongs to the technical field of electric power system control. Background technique [0002] Voltage is an important indicator of power quality, and the stability of voltage is of great significance to ensure the production of the national economy and prolong the service life of production equipment. It is the goal of each power supply department to reduce the flow of reactive power on the line and reduce network loss to achieve economical power supply. Substations often cause voltage and reactive power to exceed limits due to load fluctuations and grid structure changes. In the past, operating personnel were required to continuously observe and intervene in a timely manner, which not only increased the work intensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/16
CPCY02E40/34Y02E40/30
Inventor 白钟马新平周斌吴海刘骥田晓锋单茂华
Owner NARI TECH CO LTD
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