Structure improvement and parameter configuration method for power system stabilizer PSS4B

A parameter configuration method and structure improvement technology, applied in the field of power system, can solve the problems of difficult parameter setting, influence of phase compensation between branches, complex structure, etc.

Inactive Publication Date: 2016-07-06
SOUTHWEST JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the complex structure of the existing PSS4B, and the mutual influence of phase compensation between branches, which leads to the difficulty of parameter setting

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  • Structure improvement and parameter configuration method for power system stabilizer PSS4B
  • Structure improvement and parameter configuration method for power system stabilizer PSS4B
  • Structure improvement and parameter configuration method for power system stabilizer PSS4B

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[0062] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0063] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0064] PSS4B transfer function graph before improvement PSS4B has two inputs Δx 1 and Δx 2, You can directly use the rotor speed deviation as the two input signals, and then pass through the low frequency and high frequency converters respectively as the input of PSS4B. Due to the large number of PSS4B parameters, it is more complicated to study, and the compensation angles of each branch are likely to affect each other, making it difficult to set.

[0065] In the present invention,...

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Abstract

The invention discloses a structure improvement and parameter configuration method for a power system stabilizer PSS4B, aims at solving the problem that the PSS4B is not easy to adjust since the structure is complicated and parameters are easily affected mutually, and provides the PSS4B with an improved structure. On the basis of classic parameters of IEEE, in order to avoid mutual influences of phase compensations between branches, the phase compensation links of all the branches set to be the same; on the basis of the improved structure, a phase compensation link parameter setting method for the improved PSS4B is provided; a state matrix comprising a single-machine infinite bus system of the PSS4B with the improved structure is listed; and the condition that the low-frequency oscillation suppression effect of the improved PSS4B is more excellent than that under classic parameters is shown through the damping ratio in an oscillation mode.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a structure improvement and parameter configuration method of a power system stabilizer PSS4B. Background technique [0002] While improving the economy of power generation and transmission, grid interconnection also brings other problems to the stability of the grid. When the generator is under heavy load, long-distance power transmission, and the fast excitation system is used for excitation, the total damping of the system is small or even negative, and the problem of low-frequency power oscillation is very easy to occur at this time. Low-frequency power oscillations have a major impact on system stability, and in severe cases, it may even lead to system breakdown, causing serious damage to the economy. Due to its excellent suppression effect on low-frequency power oscillations, relatively cheap manufacturing cost, and simple structure, PSS has become a rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24
CPCH02J3/24
Inventor 王德林刘英超李向东隗霖捷胡一鸣康积涛
Owner SOUTHWEST JIAOTONG UNIV
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