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Multiple-cluster PSS (packet switching service) coordination and optimization method for mitigating inside-and-outside correlative coupling

A coordinated optimization and associated coupling technology, applied in the field of power systems, can solve problems such as the influence of key oscillation modes outside the region, and achieve the effect of improving damping characteristics and increasing power exchange capacity

Active Publication Date: 2013-08-07
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

In the past, the PSS parameter setting of the unit usually aimed at strengthening the vibration damping of the unit and the regional main network, as well as between the regional main network and the main network. Key Oscillating Modes Have Visible Effects

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  • Multiple-cluster PSS (packet switching service) coordination and optimization method for mitigating inside-and-outside correlative coupling
  • Multiple-cluster PSS (packet switching service) coordination and optimization method for mitigating inside-and-outside correlative coupling
  • Multiple-cluster PSS (packet switching service) coordination and optimization method for mitigating inside-and-outside correlative coupling

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Embodiment Construction

[0032] A PSS coordination optimization method for multi-generator sets that alleviates the correlation coupling inside and outside the area, and is used for the coordinated optimization and tuning of PSS parameters for multi-generator sets.

[0033] In order to achieve the above object, the present invention provides a PSS coordination and optimization method for alleviating intra-area and intra-area correlation coupling, comprising the following steps:

[0034] (1). Construct the static power flow model and stability calculation model of the interconnected grid inside and outside the area;

[0035] (2).Small interference frequency domain characteristic root scanning, identifying key electromechanical oscillation modes of large power grids outside the area;

[0036] (3). Participate in the selection and group division of the units in the area that participate in the key electromechanical oscillation modes outside the area;

[0037] (4). With the goal of enhancing the damping ...

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Abstract

The invention provides a multiple-cluster unit PSS (packet switching service) coordination and optimization method for mitigating inside-and-outside correlative coupling. The multiple-cluster unit PSS coordination and optimization method includes (1) establishing an inside-and-outside interconnected power system static power flow model and stable calculation model; (2) scanning small interfering frequency domain characteristic roots, and identifying an outside-area large power system key electromechanical oscillation mode; (3) participating screening and grouping of inside units of the outside large power system key electromechanical oscillation mode; (4) aiming to increasing outside-area key oscillation mode damp, optimizing unit PSS data parameters group by group; (5) performing multiple-cluster PSS parameter comprehensive coordination and optimization; and (6) estimating outside-area key section power transmission capacity improving effects. By the aid of the multiple-cluster unit PSS coordination and optimization method for mitigating the inside-and-outside correlative coupling, inside-area unit PSS can be utilized comprehensively to suppress outside interconnected power system oscillations, large-area-spanned key section power transmission capacity is improved, and safe and stable running level of a power grid is improved.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a PSS coordination and optimization method for alleviating intra-area and intra-area correlation coupling. Background technique [0002] The development of power sources is restricted by the distribution of primary energy. In regions rich in coal resources or water conservancy resources, a pattern of multi-point centralized development of large-scale power bases will be formed. For example, large-scale thermal power groups in Xinjiang are mainly distributed around coal bases such as Hami, Zhundong, and Yili. Sichuan's large-scale hydropower bases are mainly distributed in the Yalong River, Jinsha River, Dadu River and other river basins. Concentrated development of multi-point distributed power supply groups has the characteristics of large single machine and total installed capacity, and its participation in grid oscillation is relatively high. Correspondingly, the power...

Claims

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Application Information

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IPC IPC(8): H02J3/24
Inventor 郑超马世英盛灿辉林俊杰庞晓燕宋云亭李建李晶邱丽萍尚慧玉申旭辉陈湘张鑫李晓珺
Owner CHINA ELECTRIC POWER RES INST
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