A kind of agc control method for grid standby regulation
A control method and power grid technology, applied in the fields of power grid backup regulation, automatic power generation control, and AGC control, can solve problems such as effective control of backup capacity, failure to meet grid regulation, rapid unit adjustment and backup, and achieve load forecasting analysis results Comprehensive, guarantee the ability to serve the power grid, and enhance the effect of practicality
Inactive Publication Date: 2020-11-27
STATE GRID CORP OF CHINA +2
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[0008] In the above technical solution, the AGC only monitors the reserve capacity, but does not effectively control the reserve capacity, which will easily lead to the rapid exhaustion of the adjustment reserve of the fast unit during the load-up phase or load-down phase, which cannot meet the requirements for further regulation of the power grid.
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[0039] The technical content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0040] The present invention provides an AGC control method for power grid standby adjustment, which abandons the idea of using the load forecast incremental computer group adjustment amount, but only uses the load forecast increment to judge the load change trend, and the unit adjustment amount remains the same. It is determined by the actual regulation demand of the current power grid. This method combines the results of ultra-short-term load forecasting to reasonably control the AGC adjustment backup, realizes the effective cooperation between the slow-speed unit and the fast-speed unit, ensures the regulation performance of the grid AGC through the automatic adjustment of the backup, and improves the fairness of power generation of various types of units. It is beneficial to improve the overall regulatio...
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The invention discloses an AGC control method for power grid standby adjustment. The AGC control method comprises the following steps: (1) calculating the future increment of load according to the difference of a load prediction value and a present practical load value, and judging the load change tendency according to the increment; (2) calculating upper adjustment standby and lower adjustment standby of a present rapid-speed machine set and a low machine set; (3) calculating force of a total adjustment target of the slow-speed machine sets according to the load change tendency, the real-time adjustment requirements of a power grid, and the upper / lower adjustment standby ratio of the rapid-speed machine sets to the slow-speed machine sets; (4) transmitting the total target force of the slow-speed machine sets to different slow-speed machine sets to execute according to a provided ratio. With the combination of super short period load prediction result, AGC adjustment standby is reasonably controlled, effective cooperation of the slow-speed machine sets and the rapid-speed machine sets is achieved, and the overall adjustment and control property of AGC is improved.
Description
technical field [0001] The invention relates to an Automatic Generation Control (AGC) method, in particular to an AGC control method for power grid backup regulation, and belongs to the technical field of power system dispatching. Background technique [0002] The AGC technology adjusts the active power of the generating units in the local control area of the power system, so that the generation output of the generating units in this area can track the change of the load, so as to meet the real-time balance of power supply and demand. According to the current output of the unit and the upper / lower control limit of the unit, the up-regulation reserve and the down-regulation reserve of the unit can be calculated. The calculation formula for the adjustment reserve is as follows: [0003] R up =L high -P [0004] R down =P-L low [0005] Among them, R up Indicates that the unit adjusts upwards for standby, R down Indicates that the unit adjusts downward for standby, L ...
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IPC IPC(8): H02J3/46
CPCH02J3/003H02J3/46
Inventor 卓峻峰尚学伟王赞赵林余建明邓波孙荣富马锁明崔正湃王若阳崔慧军
Owner STATE GRID CORP OF CHINA