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Intelligent power distribution dispatching method and system for isolated grid operation of complete units

A technology of intelligent power distribution and self-contained units, applied in the field of power grid, can solve problems such as step-down and harshness, generator frequency and voltage fluctuation, and reduce the stability of isolated grid power system, so as to achieve the effect of improving stability

Active Publication Date: 2017-10-31
HNAC TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

There is an exciting inrush current in the step-down transformer during the airdrop process. Since there is no current in the 10KV line, the frequency and voltage of the generator will fluctuate greatly.

Method used

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  • Intelligent power distribution dispatching method and system for isolated grid operation of complete units
  • Intelligent power distribution dispatching method and system for isolated grid operation of complete units
  • Intelligent power distribution dispatching method and system for isolated grid operation of complete units

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Embodiment Construction

[0018] An intelligent power distribution scheduling method for the isolated grid operation of the complete unit, such as figure 1 shown, including the following steps:

[0019] Step S110: Real-time monitoring of grid data on the user side of the isolated grid power system. Grid data includes user load, and may also include other user-side data. The required grid data can be obtained directly from the grid monitoring system.

[0020] Step S120: When the grid data satisfies the first preset condition, a resistive load assembly with a capacity equal to a preset percentage of the user load is put into operation at the user side. The first preset condition can be adjusted according to actual conditions, and the specific value of the preset percentage can also be adjusted according to actual needs. In one of the embodiments, the grid data also includes the voltage frequency at the user side, and the preset percentage is 30%. The resistive load assembly consists of two resistive ...

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Abstract

The invention relates to an intelligent power dispatching method and system for isolated network operation of a whole unit. The method comprises the following steps of monitoring power grid data of a user side of an isolate network power system in real time; inputting a resistance load assembly of which the capacity is the predetermined percentage of a user load into the user side when the power grid data conforms to a first predetermined condition; and exiting the resistance load assembly from the user side when the power grid data conforms to a second predetermined condition. The inputting and the exit of the resistance load assembly of the user side are controlled according to the detected power grid data, the load of the user side is adjusted by intelligent power distribution control, excitation surge current during the idling process of a step-down transformer caused by full-load operation of a power generator with an electronic load is prevented, the frequency and the voltage of the power generator are ensured to be prevented from being fluctuated greatly, and the stability of the isolated network power system is improved.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to an intelligent power distribution scheduling method and system for isolated grid operation of complete units. Background technique [0002] With the rapid development of power grid technology, the overhead lines in some remote places transmit electricity from the power grid, which is very costly, and even the construction of elevated lines in these places is technically difficult and risky. However, the local water resources are abundant, so water turbines can be used to generate electricity. However, the hydropower station is several to more than ten kilometers away from the user. If low-voltage power transmission is used, the cable is thick, the line loss is large, the cost is high, and the system is unstable. It needs to be boosted for power transmission and distribution to be safe, reasonable and affordable for users. use. [0003] The electronic load regulator is used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14H02J13/00
CPCH02J3/14H02J13/00007Y02B70/3225Y04S20/222
Inventor 黄文宝胡清波易博文邓东红
Owner HNAC TECH
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