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Coordination control method

A technology of coordinated control and control instructions, applied in the direction of AC network voltage adjustment, AC network circuits, electrical components, etc., can solve security problems, affect the execution effect of instructions, etc., to improve frequency and voltage pass rate, and improve economy and power quality, reducing power generation costs and network loss

Inactive Publication Date: 2011-08-17
TSINGHUA UNIV +1
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Problems solved by technology

Therefore, the automatic generation control system and the automatic voltage control system cannot be used as two completely independent closed-loop control systems, acting on an actual power system at the same time, nor can they be controlled simply by adopting the strategy of active power first and reactive power second
Otherwise, the interaction between AGC and AVC will inevitably affect the execution effect of their respective instructions, and may even cause security issues

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Embodiment Construction

[0033] The coordinated control method proposed by the present invention is described in detail as follows in conjunction with the accompanying drawings and embodiments.

[0034] The method of the invention introduces the idea of ​​coordinated control in the automatic control theory into the power system according to the characteristics of mutual influence of the active power flow and the reactive power flow in the power system. Such as figure 1 As shown, the coordinated control method of the opportunity AGC and the AVC automatic coordinated control system according to an embodiment of the present invention includes steps:

[0035] S1. Measure the real-time voltage, current, active power and reactive power of each bus node in the power system, set the AGC command, that is, set the kth sampling time, the active power output by each generator node in the power system m is the serial number of the generator node, and m=1, 2,..., α G , α G is the number of generator nodes in th...

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Abstract

The invention discloses a coordination control method and relates to the technical field of control of power systems. The coordination control method comprises the following steps: S1. measuring real-time voltage, current, active power and reactive power of all bus bar nodes, and setting an AGC (automatic gain control) command; S2. performing voltage check according to the AGC command, and outputting voltage predicted value and check result of the selected bus bar node; S3. outputting the AGC command if the AGC command meets the voltage requirement, otherwise, implementing the step S4; S4. performing AVC (automatic voltage control) according to the voltage predicted value of the selected bus bar node, and calculating voltage adjusting value of the selected bus bar node after performing the AVC; S5. performing power check according to the voltage adjusting value of the selected bus bar node, and outputting power predicted value and the check result of a call wire; and S6. outputting anAVC command if the AVC command meets the power requirement, otherwise, resetting the AGC command, and returning to implement the step S2. By adopting the method, active power flow and reactive power flow of the power system can be well controlled, and economy and safety of operation of the power system can be improved.

Description

technical field [0001] The invention relates to the technical field of power system control, in particular to a coordinated control method for an automatic coordinated control system of AGC and AVC. Background technique [0002] In the current power system, Automatic Generation Control (AGC) and Automatic Voltage Control (AVC) have been widely used, and most of their research is based on active and reactive power decoupling assumptions, without considering the coordination problem between the two. However, the control objectives of the power system are diverse, and the control objects are scattered and complex. Although the active power and reactive power of the system are decoupled to a certain extent, they are not unrelated. The change of active output of the generator will inevitably affect the voltage quality and voltage stability of the system. At the same time, the adjustment of the transformer tap, the switching of the capacitor reactor, and the change of the genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/12H02J3/46
CPCH02J3/46Y02E60/76H02J3/16Y02E40/34Y04S40/22H02J2003/007H02J2203/20Y02E40/30Y02E60/00Y04S40/20H02J3/466
Inventor 李小平胡伟李淼孙建波胡翔李大虎王淑颖郑乐
Owner TSINGHUA UNIV
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