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Automatic gain control (AGC) unit coordination control method based on fire-water power joint optimization scheduling

A joint optimization and coordinated control technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of being unable to adapt to the flexible switching of section targets and the lack of universal adaptability of control strategies, so as to improve the adjustment quality, reduce the number of round-trip adjustments, reduce wear effect

Active Publication Date: 2013-06-12
NARI TECH CO LTD +1
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Problems solved by technology

However, the priority sorting strategy is only used in the advanced control mode. This precondition makes the unit subject to the limitation of real-time control mode, and the control strategy lacks good general adaptability; while the decoupling in space is not related to the need to monitor. The control section is tightly bound and cannot adapt to the flexible switching of section targets

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  • Automatic gain control (AGC) unit coordination control method based on fire-water power joint optimization scheduling
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  • Automatic gain control (AGC) unit coordination control method based on fire-water power joint optimization scheduling

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Embodiment Construction

[0030] In the present invention, an AGC modeling method based on control grouping is disclosed: a main control area is established in the AGC system for tracking system frequency deviation and tie line planning deviation. The main control area is the calculation carrier of the total adjusted power of the area, and the specific method is determined by the area control mode. Taking TBC (Tie-line Bias Control, tie-line frequency deviation control, a control mode that considers both system frequency and tie-line bias) as an example, when the main control area includes both system frequency and tie-line switching components, ACE (Area Control Area, regional control deviation) is calculated as:

[0031] ACE=K·(f-f 0 )+(P-P 0 ) (1)

[0032] In the case of considering the jet lag correction component, the calculation method of ACE is changed to:

[0033] ACE=K·(f-f 0 -δf)+(P-P 0 ) (2)

[0034] In the case of considering the unintentional power repayment component, the cal...

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Abstract

The invention discloses an automatic gain control (AGC) unit coordination control method based on hydroelectric and thermal power joint optimization scheduling. The method comprises the steps that a main control area is established in a system, objective sub-areas are established according to strategy requirements, contents of a control unit is confirmed according to differences of regulating characteristics of an AGC unit, subjection relationships among a hydroelectric unit, a thermal power unit, the control unit and the objective sub-areas are set in an online mode, priority levels are set according to strategies such as a regulation margin, planned electric quantity and a grid purchase price, proportions are regulated according to established responsibility sharing factors, remained regulating quantity is coordinated among units or in units, and a final regulating command is issued after passing security correction. According to the steps, all the hydroelectric and thermal power AGC units together bear the regulating quantity in an area, the contribution functions of the various units to system AGC regulation are sufficiently played, and dynamic tracking requirements of different objects can be met through a manner that the control strategies are modified in an online mode.

Description

technical field [0001] The invention belongs to the technical field of electric power system control, and more precisely, the invention relates to an AGC unit coordinated control method for combined optimal scheduling of water, thermal power, and electric power systems. Background technique [0002] At present, the energy supply structure of my country's power grid determines that the units participating in AGC regulation are mainly divided into two categories: hydropower units and thermal power units. The response speed of the hydroelectric unit is fast, and it has very good regulation performance. However, in most areas of our country, the proportion of the power grid is relatively small, and relying solely on the hydroelectric unit cannot fully meet the needs of AGC regulation and backup; on the other hand, in order to maximize the use of water In terms of energy resources, the hydropower unit should be in the state of frequent and full power generation as much as possibl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
Inventor 汪俊余滕贤亮张小白高宗和戴则梅崔长江邹清林郑文彬唐健
Owner NARI TECH CO LTD
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