Primary frequency modulation adjusting performance determination method of generating set
A generator set and measurement method technology, applied in the direction of motor generator testing, etc., can solve problems such as low measurement accuracy, artificial dead zone, difficulty in real-time data measurement of maximum load adjustment range of speed variation rate, and inability to completely record the operating status of the unit , to achieve the effect of improving the grid frequency stability
Inactive Publication Date: 2012-01-18
NORTHWEST CHINA GRID
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[0005] The existing measurement methods have the following problems: the real-time data measurement of artificial dead zone, speed variation rate, maximum load adjustment range, sluggish rate, and response behavior is relatively difficult. The existing measurement methods are only based on whether the assessment items meet the technical indicators, and the measurement is only result-oriented. , cannot completely record the operating status of the unit during a frequency regulation period, and the measurement accuracy is low
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[0022] The present invention is described in further detail below in conjunction with accompanying drawing:
[0023] see figure 1 As shown, in order to make up for the shortcomings of the existing measurement methods, the present invention proposes a contribution power algorithm with additional weights. The unit’s primary frequency regulation contribution power is a combination of multiple indicators of the unit’s primary frequency regulation. It reflects the actual contribution of the unit to the grid frequency. The introduction of this parameter makes it possible to quantify the input and intensity of the unit’s primary frequency regulation function.
[0024] In order to better distinguish the contribution of the unit’s primary frequency regulation to the frequency stability after the frequency exceeds the limit, the frequency disturbance is divided into large disturbance and small disturbance. The power imbalance of the power grid within 5 seconds is equal to or less than ...
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The invention discloses a primary frequency modulation adjusting performance determination method of a generating set, and determination of primary frequency modulation adjusting performance is carried out on the generating set with automatic generating control. An improved additional weight integration electric quantity algorithm is provided in the invention, according to real contribution degree of primary frequency modulation to an electrical network, different weight coefficients are employed to carry out integration contribution electric quantity calculation on different frequency differences or time quanta in large and small frequency disturbances, thus primary frequency modulation motions of different generating sets can be distinguished scientifically, a correct rate and contribution electric quantity of the primary frequency modulation motion can be taken into consideration comprehensively to calculate deserved primary frequency modulation economy compensation, and through carrying out verification with real-time measurement data, the novel performance determination method is completely operable. An instance in the invention shows that the additional weight integration electric quantity algorithm has rationality compared with a common integration electric quantity algorithm.
Description
【Technical field】 [0001] The invention relates to a method for measuring the regulation performance of a generator set, in particular to a method for measuring the regulation performance of a generator set for primary frequency regulation. 【Background technique】 [0002] Primary frequency regulation refers to the service provided by the generator set through the automatic response of the speed regulation system to adjust the active output to reduce the frequency deviation when the frequency of the power system deviates from the target, which belongs to the basic auxiliary service in the auxiliary service. The primary frequency regulation function of the generating set is an important technical measure to stabilize the system frequency, and it can play an important role in realizing the automatic dispatch of power grid generation, improving the power quality, and maintaining the safe and stable operation of the power grid. [0003] The primary frequency regulation function re...
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IPC IPC(8): G01R31/34
Inventor 任冲孙骁强褚云龙贺元康
Owner NORTHWEST CHINA GRID
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