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Relationship-based voltage monitoring index method for providing boosting voltage regulating-controlling strategy

A voltage monitoring and auxiliary voltage technology, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve problems such as ineffective processing

Active Publication Date: 2013-05-01
EAST CHINA GRID +1
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Problems solved by technology

However, existing methods cannot handle this step efficiently

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  • Relationship-based voltage monitoring index method for providing boosting voltage regulating-controlling strategy

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Embodiment Construction

[0066] See Figure 2 to Figure 5 , The present invention provides a relational voltage monitoring index method for auxiliary voltage control decision-making, including the calculation process of the average voltage VPI of the plant and station, and the penalty factor for the low and medium voltage side of the plant and station The calculation process of the reactive power monitoring indicator QCE, and the process of automatically searching for the pressure regulating means of nearby plants.

[0067] figure 2 The calculation process of the existing plant voltage average value VPI is shown. The specific steps are as follows.

[0068] Step 1: Take out the actual measured voltage of the power grid (in minutes) at each time point during the start and end of the plant (take 9 minutes forward) .

[0069] Step 2: Calculate the actual measured voltage at each time point Whether the upper limit of control or warning is exceeded.

[0070] The calculation formula is:

[0071] among them, The...

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Abstract

The invention relates to a relationship-based voltage monitoring index method for providing a boosting voltage regulating-controlling strategy. The method comprises a calculation flow of a power station voltage average value VPI, a calculation flow of power station low and medium-voltage side penalty factors, a calculation flow of a reactive power monitoring index QCE and a flow for automatically searching voltage-regulating measures of neighboring power stations, wherein the calculation flow of the reactive power monitoring index QCE comprises the following steps of: inputting the power station low and medium-voltage side penalty factors and the power station voltage average value VPI; and calculating the power station reactive power monitoring index QCE. According to the relationship-based voltage monitoring index method for providing the boosting voltage regulating-controlling strategy disclosed by the invention, the conventional voltage index calculation and management ways are changed, a current network voltage level is reflected according to a low-voltage side reactive power situation, and the voltage-regulating measures of neighboring power stations are automatically searched and analyzed, so that an intelligent assistant decision is provided, dispatchers can rapidly and correctly judge and regulate, and safe and emergent running of an entire electric network is further guaranteed; and the method has a very high practical electric network running value.

Description

Technical field [0001] The invention relates to a voltage monitoring method, in particular to a relational voltage monitoring index method that can provide auxiliary voltage regulation and control decisions, and the index is: a reactive power monitoring index QCE. Background technique [0002] With the rapid development of the power system, the expansion of the interconnection of power networks, and the popularization and application of power automation technology, the requirements of power users for power quality have also been continuously improved. As a very important performance index of power quality, voltage plays an important role in the safe and economic transmission of power. However, voltage fluctuations and distortions will have a certain impact on the stable operation and life of the power system load. Therefore, finding a reasonable voltage monitoring and analysis index to measure the stability of the voltage, and then taking the necessary protective measures, has h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16
CPCY02E40/34Y02E40/30
Inventor 唐陇军周毅侯勇刘林林王康刘秋江李旭洋徐尧强吴超周晓苏王凯米向宾郭佳姚新苗裘天亮
Owner EAST CHINA GRID
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