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Islanding control method based on fcb unit

An island control and island technology, applied in the field of island control based on FCB units, can solve the problems of weakening the safety and reliability of the power grid system, and long time

Active Publication Date: 2015-09-16
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, after the fault is eliminated, it will take a long time to recover the generators removed in the islanding process when the system is connected to the grid. This process slows down the process of the system to a large extent Weaken the safety and reliability of the entire power grid system

Method used

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  • Islanding control method based on fcb unit
  • Islanding control method based on fcb unit
  • Islanding control method based on fcb unit

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Embodiment Construction

[0015] In order to further illustrate the technical means adopted by the present invention and the achieved effects, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0016] see figure 1 , is a schematic flowchart of the islanding control method based on the FCB unit of the present invention.

[0017] A kind of islanding control method based on FCB unit, comprises the following steps:

[0018] S101 measures the load in the isolated island listed in the grid system solution;

[0019] S102 obtains the minimum output of non-FCB generating sets in the island;

[0020] S103 Select the corresponding FCB generator set in the island according to the load and the minimum output of the non-FCB generator set, and make it enter the FCB state; wherein, when the FCB generator set enters the FCB state, it is an island The generated power provided is zero;

[0021] S104...

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Abstract

The invention discloses an island control method based on an FCB set. The method includes the steps of measuring the load, split by a power grid system, in an island; obtaining the minimum power output of a non-FCB generator set in the island; selecting a corresponding FCB generator set in the island according to the load and the minimum power output of the non-FCB generator set so that the non-FCB generator set is in an FCB state, wherein when the FCB generator set is in the FCB state, generated power provided for the island is zero; adjusting power output of the non-FCB generator set in the island so that the generated power in the island and a load demand can be balanced. The FCB unit is in the FCB operation state, quick load shedding operation is carried out and the power output of the non-FCB unit is adjusted, so that power demand and supply of an island system are balanced on the situation that power generators are switched. When power system disturbance is eliminated, the FCB unit can be used for power grid operation immediately.

Description

technical field [0001] The invention relates to the technical field of islanding control after decoupling of a grid system, in particular to an islanding control method based on an FCB unit. Background technique [0002] As the power grid system gradually develops from a regional network with self-balancing power to a cross-regional interconnected network, in order to prevent different regions from losing synchronization after a major disturbance occurs in the power grid, the decoupling device in the power grid system will decouple the system after a major disturbance occurs in the system. In order to ensure the stable operation of each island, it is necessary to quickly and effectively control the subsystems behind the island. The imbalance between power generation and load demand is one of the key problems after the island is formed. After the formation of isolated islands, if appropriate control is not taken in time, some isolated islands may become unstable due to serio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/46
Inventor 李嘉龙侯云鹤卢恩王宁王冲刘皓明
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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