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Adjusting and control method for the loaded voltage-regulating transformer at the middle layer of the static mixed automatic voltage control

A voltage regulating transformer, automatic voltage technology, applied in the direction of AC network voltage adjustment, electrical components, circuit devices, etc.

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

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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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  • Adjusting and control method for the loaded voltage-regulating transformer at the middle layer of the static mixed automatic voltage control
  • Adjusting and control method for the loaded voltage-regulating transformer at the middle layer of the static mixed automatic voltage control
  • Adjusting and control method for the loaded voltage-regulating transformer at the middle layer of the static mixed automatic voltage control

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Embodiment Construction

[0032] The main implementation of the regulation method of the static hybrid automatic voltage control intermediate layer on-load tap-changing transformer proposed by the present invention is shown in FIG. 1 .

[0033] The present invention is implemented according to the following stages (flow process is referring to Fig. 2):

[0034] Step 1: In the offline state, give the indicators of the power system related to voltage quality, voltage security, economic operation, etc.: (a) given the network parameters of the power system; (b) given the number of key bus nodes P alpha P And the corresponding bus name, and the control value ΔV of each key bus node Pi [k]; (c) The number of nodes F of the given voltage regulating transformer α F , and the given ratio reference value t of each voltage regulating transformer node l ref [k],l=1,...,α F ; (d) The sensitivity coefficient matrix T of the voltage value of the given key bus node P relative to the transformation ratio of the on...

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Abstract

The invention belongs to the electrical network voltage idle work automatic control technology area, its characteristic lies in while carries on the set point control to the essential generatrix node voltage, through transformation ratio accommodation coefficient using the optimized algorithm adjust the change quantity of on load tap changing transformer, causes the transformation ratio of on load tap changing transformer to the best approach the transformation ratio reference value which is set in the optimized tidal current computation hypothesis, in order to remand the voltage change value of the essential generatrix pitch point, causes the electric power network realize the electrical power system voltage security - stable - economy three coordination control in the movement process under the guarantee security.

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 胡伟梅生伟张雪敏陈颖卢强
Owner TSINGHUA UNIV
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