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Security adjusting and control method for top layer of the static mixed automatic voltage control

An automatic voltage, top-level technology, applied in the direction of AC network voltage adjustment, electrical components, circuit devices, etc., to ensure the effect of voltage safety

Inactive Publication Date: 2007-09-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, maintaining the system voltage level, improving the voltage quality and maintaining the voltage stability of the system has become a very challenging issue

Method used

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  • Security adjusting and control method for top layer of the static mixed automatic voltage control
  • Security adjusting and control method for top layer of the static mixed automatic voltage control
  • Security adjusting and control method for top layer of the static mixed automatic voltage control

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Experimental program
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Embodiment Construction

[0032] Driven by discrete events, the present invention can realize coordinated and optimal control of system voltage safety at the highest level of static hybrid automatic voltage control (as shown in Figure 1), and can perform automatic calculation and regulation through a computer.

[0033] This invention comprises following steps (flow process is referring to Fig. 2):

[0034] Step 1: In the off-line state, give the indicators of the power system related to voltage security and system parameters, specifically including: (a) the static voltage minimum security indicator λ of the power system min ref [k]; (b) The minimum difference value Δλ set by the power system safe ; (c) The number of given key nodes P α P and the corresponding bus name; (d) give the relative minimum modulus eigenvalue λ of each key node min voltage sensitivity (e) System network parameters.

[0035] Step 2: Given the real-time values ​​of voltage, current, active power and reactive power of each b...

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Abstract

The invention belongs to the electrical network voltage idle work automatic control technology area, its characteristic lies in after the kth sampling gap, takes the static voltage minimum safety index minref[k] of the electrical power system as the given value, stabilization control the minimum mold character min [k] of the electrical power system Jacobian matrix, when min[k]-minref[k] is smaller than hypothesis the system smallest difference value safe starts optimized control, based on the remended min[k] adjust each essential generatrix pitch point change quantity VPi[k], causes min [ k ] - minref [ k ]to be bigger than the system smallest difference value safe, thus realized the safty coordinated optimization control of the electrical power system generatrix voltage, enhanced the voltage secure level.

Description

technical field [0001] The technical invention belongs to the automatic control method of voltage and reactive power in large-scale regional power grids, provincial power grids and regional power grids of power systems. Background technique [0002] The development of the power system has prompted people to make continuous efforts to improve the security and stability of the power system, especially the emergence of the power market has put forward higher requirements for the stability of the power system, and has brought new challenges to the safe and stable operation of the power system. features. Generally, power plants are far away from the load center, but due to factors such as economics and environmental protection, on the one hand, the development of some power networks cannot keep up with the needs of the rapid growth of power loads, making some transmission lines in a state of heavy load or overload operation; on the other hand On the one hand, the implementation ...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/12H02J3/16H02J3/38H02J3/46
CPCY02E40/34Y02E40/30
Inventor 胡伟张雪敏陈颖梅生伟卢强
Owner TSINGHUA UNIV