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Control unit and control method for multiple sets of power engine units in a power plant

A technology of control unit and control method, which is applied in the field of control systems and can solve problems such as failure to supply power

Active Publication Date: 2019-08-27
WARTSILA FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As can be seen, the local load of the power plant cannot be properly supplied

Method used

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  • Control unit and control method for multiple sets of power engine units in a power plant
  • Control unit and control method for multiple sets of power engine units in a power plant
  • Control unit and control method for multiple sets of power engine units in a power plant

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Embodiment Construction

[0017] figure 1 An example of a power plant 1 with 9 power engine units 14, 15 is shown. As described above, the power engine unit includes the engine 14 that generates power and the generator 15 that converts the power into electric power. The engine is for example a piston engine or a reciprocating engine. The power engine units 14 , 15 are connected to the busbars 2 , 3 , 4 of the power plant through connecting branch 13 circuit breakers called generator circuit breakers 6 . Such as figure 1 As seen in , a busbar may include several circuit breakers known as busbar breakers 7 . Busbar circuit breakers make it possible to divide the busbar into sections according to different needs. There are also a number of connections 16 , 17 , 18 between the busbars 2 , 3 , 4 and the grid breaker 5 . In this way the different parts of the busbars 2, 3, 4 and the power engine units 14, 15 can supply power to the grid through the grid breaker. The local loads 19, 19A of the power pla...

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PUM

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Abstract

A control unit and a control method for multiple groups of power engine units of a power plant. The invention provides a control unit (8) for a power engine unit (14, 15) of a power plant. The control unit comprises: an input terminal (44, 45, 46), which receives status data from the circuit breaker (5, 6, 7); and a data bus interface (47), which is connected to the data bus between the control unit send and receive data. Said control units (14, 15) are arranged to determine a group of power engine units electrically connected to each other by local busbars (2, 3, 4). On receipt of said first status data indicating that said grid breaker (5) is open, said control unit (8) is arranged to remain connected with a power engine unit (14, 15) to said In the manner of said local buses (2, 3, 4), it is decided based on predetermined criteria for said determined set of power engine units (14, 15) whether to generate and send a message for opening said generator breaker Control message of device (5).

Description

technical field [0001] The invention relates to a control system for a power engine unit in a power plant. Background technique [0002] A power plant may comprise a number of units to generate electricity to be delivered to the grid. The grid distributes the generated electricity to grid consumers. A single unit may be referred to as a power engine unit. A power engine unit is the combination of an engine that produces power and a generator that converts that power into electrical form. The engine may eg be a diesel engine. The power engine unit is connected to the bus bars of the power plant. Busbars are, for example, rails or cables. The busbars are connected to circuit breakers called grid breakers through which electricity is transferred to the grid. If a problem occurs in the grid (for example, a short circuit), the power plant is automatically disconnected from the grid. [0003] Large power plants can generate hundreds of megawatts to the grid. Typically the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/46H02J13/00
CPCH02J3/38H02J3/46Y04S40/124H02J3/0073H02J3/388H02J13/00016Y02E60/00Y04S10/52Y04S10/12Y02E40/70
Inventor 汤姆·凯丝阿里·赛科宁
Owner WARTSILA FINLAND OY