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Advanced Quantitative Adjustment Method of AGC for Thermal Power Units

A technology of thermal power units and adjustment methods, which is applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as unqualified A1 values, achieve the effects of reducing the number of interventions, improving the quality of power grid frequency control, and reducing the number of limit violations

Active Publication Date: 2016-12-28
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(1) In the case of non-accident, the A1 value of a certain control area is unqualified for three or more consecutive assessment periods

Method used

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  • Advanced Quantitative Adjustment Method of AGC for Thermal Power Units
  • Advanced Quantitative Adjustment Method of AGC for Thermal Power Units
  • Advanced Quantitative Adjustment Method of AGC for Thermal Power Units

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0034] At present, Tianjin Power Grid adopts Tie-line Load Frequency Bias Control (Tie-line Load Frequency Bias Control, TBC) mode, and the A1 / A2 standard under TBC mode is formulated based on operating experience. The standard stipulates that the assessment period is 15 minutes, and A1 is the number of ACE (Area Control Error) zero crossings within 15 minutes. It is required that A1 crosses zero at least once during the assessment period, and A2 is the average value of ACE within the assessment period. |A2|≤50MW within the period.

[0035] see figure 1 , the thermal power unit AGC advance quantitative adjustment method of the present invention comprises the following steps:

[0036] 1) Obtain the operation-related data ACE and A2 of the AGC at the current moment,

[0037] ACE is the tie line deviation value, and its calculation formula ...

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Abstract

The invention discloses an advanced quantification adjusting method for a thermal power set AGC. The method comprises steps that: related operation data ACE and A2 of the AGC at the present moment are acquired; deltaACE satisfying an examine requirement is acquired; an output value deltaPG needing set adjustment is calculated; whether an adjusting scope of the set satisfies the requirement is examined; the set is adjusted according to the acquired deltaPG; whether the A2 satisfies the requirement is examined. Through the method, advanced quantification adjustment on the thermal power set AGC can be realized, intervention times are greatly reduced for a dispatcher, ACE off-limit times are reduced, electrical network frequency control quality is improved, and operation stability of the thermal power set is improved.

Description

technical field [0001] The invention belongs to the field of active frequency control, and in particular relates to an AGC advance quantitative adjustment method for a thermal power unit. Background technique [0002] At present, the control strategy of the tie line of Tianjin Power Grid has not yet achieved closed-loop control. In most cases, on the basis of the AGC system control strategy, the dispatcher needs to manually adjust it, especially in the period when the load rises and falls rapidly and multiple impact loads act. At the same time, the inter-provincial connection line of the North China Power Grid has a strict power assessment, which is another severe test for the adjustment of the regional connection line. Article 21 of the "North China Power Grid Inter-provincial Tie Line Electric Power Assessment Management Measures (Provisional)" stipulates: the assessment of long-term continuous deviation from the tie-line plan: any of the following situations is identified...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/38
Inventor 陈文福宋莉马刚刘海鹏杨邦宇郝达智宋海涛王麟刘怡王伟臣王健曹旌卢向东李伟刘颂王磊刘玉坤路树森姚维平李跃泉牛跃华史磊
Owner STATE GRID CORP OF CHINA
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