Self-adaptive coordinating matching method for power network frequency modulation mode
An adaptive and power grid technology, applied in the direction of reducing/preventing power oscillation, etc., can solve problems such as equipment wear, conflict, reverse adjustment, weakening control effect, etc., and achieve the effect of suppressing conflict and reducing waste
Active Publication Date: 2017-12-12
STATE GRID HUNAN ELECTRIC POWER +2
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[0007] It can be seen that the adjustment objectives and adjustment methods of primary frequency modulation, secondary frequency modulation, and tertiary frequency modulation are different. When the three frequency modulation methods of the power grid are all put into operation, it will cause conflicts and reverse adjustments between the three frequency modulation methods, which will not only weaken each other. Therefore, it is necessary to design an adaptive coordination and coordination method for power grid frequency regulation methods that fully consider the advantages and disadvantages of various frequency regulation methods to achieve the optimal frequency regulation effect
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[0041] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0042] Such as figure 1 As shown, the present invention discloses a method for self-adaptive coordination and coordination of power grid frequency regulation, including the following steps:
[0043] Step 1. Determine the initial configuration parameters; specifically, the following steps are included:
[0044] Step 101, determine the allowable frequency range of the power system, set a frequency array MaxFrequencyArray sorted from small to large according to its maximum value and minimum value, and record it as MaxFrequencyArray=[A 0 ,A 1 ,A 2 ,...,A M ], where A 0 ,A 1 ,A 2 ,...,A MIndicates the frequency interval value within the frequency range allowed by the power system; determines the frequency range corresponding to various frequency modulation methods; the maximum value of the frequency range allowed by the power sys...
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The invention discloses a self-adaptive coordinating matching method for a power network frequency modulation mode. The method comprises the following steps: 1, determining initial configuration parameters; 2, setting triggering conditions, namely, triggering a frequency increase event when an AGC (Automatic Gain Control) system monitors that the real-time power network frequency value FAGC is beyond the increase threshold Thda for required frequency modulation and the FAGC is still beyond the threshold after the frequency modulation triggering threshold time Tact; triggering a frequency decrease event when the FAGC is less than the decrease threshold Thdb for required frequency modulation and the FAGC is still less than the threshold after the frequency modulation triggering threshold time Tact; and 3, dynamically adjusting the decrease threshold for required frequency modulation and FnoW based on the frequency fluctuation occurs, and realizing self-adaptive coordinating matching of the frequency modulation mode according to the frequency ranges corresponding to various frequency modulation modes and the Fnow preset frequency modulation mode. With the adoption of the method, the frequency stability can be ensured during frequency modulation under different power network frequency deviation.
Description
technical field [0001] The invention belongs to the field of electric power engineering, and in particular relates to a method for self-adaptive coordination and coordination of power grid frequency modulation modes. Background technique [0002] In recent years, with the continuous expansion of the grid scale, the increase of load and the constant change of load, the frequency and magnitude of power system disturbances have become more and more serious, which has brought a huge impact on the normal operation of the grid and people's living standards. [0003] In order to solve the problem of power imbalance and frequency instability caused by the frequency fluctuation exceeding the regulations after the disturbance of the power grid, a lot of research has been done on the frequency regulation of the power grid at home and abroad, and many ways of frequency regulation of the power grid have been proposed. In the case of frequency response after a disturbance in the power sys...
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IPC IPC(8): H02J3/24
CPCH02J3/24
Inventor 陈道君周年光王波张斌崔挺张可人呙虎左剑
Owner STATE GRID HUNAN ELECTRIC POWER