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Independent micro power grid consisting of diesel generator and storage battery set

A technology for diesel generators and battery packs, applied in the direction of AC network load balancing, single-network parallel feeding arrangement, sustainable manufacturing/processing, etc., can solve problems affecting life, waste, unit overload and heat generation, etc., and achieve good promotion and application Prospects, effects of improving operating economy

Active Publication Date: 2017-07-28
TAIYUAN UNIV OF TECH
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Problems solved by technology

Similarly, when the actual load demand is higher than its maximum rated operating power limit but does not exceed the sum of the power of the two diesel generators, if it is operated according to the load demand, it is necessary to open one more unit, resulting in waste; but if it exceeds When the maximum rated operating power is limited, the unit will be overloaded and heat, which will affect the service life

Method used

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  • Independent micro power grid consisting of diesel generator and storage battery set
  • Independent micro power grid consisting of diesel generator and storage battery set
  • Independent micro power grid consisting of diesel generator and storage battery set

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Embodiment Construction

[0033] An independent microgrid composed of diesel generators and battery packs, including multiple diesel generators and battery packs. Each diesel generator has its own unit controller DCn, which contains a processor, and the input of the processor is connected to the AC bus unit measurement module used to collect the AC bus voltage and current, which is used to collect the controlled diesel generator. Voltage, current, running time t m (clock timing), speed n m The diesel generator measurement module is a phase detection module for collecting the voltage phase difference between the AC bus and the controlled diesel generator (the phases are required to be consistent when connected to the grid); the processor of the unit controller DCn has a speed adjustment output terminal and a voltage adjustment output terminal, and at the same time connect the unit execution module including the circuit breaker, and the contact Dk of each circuit breaker in it m They are respectively c...

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Abstract

The invention relates to a micro power grid and power supply control thereof, in particular to an independent micro power grid consisting of a diesel generator and a storage battery set. The objective of the invention is to deal with contradictions between operation reliability or operation service lifetime and operation economical performance of a diesel generator set. A storage battery set, a host computer communication module, a host computer communication bus and a host computer processor are added in a traditional diesel generator power supply system. The host computer processor receives state information uploaded to the bus by each controller, and carries out judgment and gives out commands according to the information so as to indicate each unit controller, each storage battery set controller and each load execution module to give out action instructions for circuit breakers and inverters of controlled circuits. According to the invention, through proper hardware combination and unique software control, the operation economical performance of the independent micro power grid is improved; contradictions between the operation reliability or the operation service lifetime and the operation economical performance are well balanced; and the independent power grid is a quite ideal independent power grid and has wide promotion and application prospects.

Description

technical field [0001] The invention relates to a microgrid and its power supply control, in particular to an independent microgrid composed of a diesel generator and a battery pack. [0002] technical background [0003] At present, there are still serious power supply problems at the end of my country's large power grid and in some remote areas far away from the power grid. The power supply equipment in these areas is single, and most areas can only use diesel generators and distributed power sources for power supply. However, the power sources of this power supply mode cannot be connected with each other and can only supply part of the load, and the power quality is poor; and when the load is unstable, it will seriously affect the power supply efficiency of the diesel generator, and even increase fuel consumption and waste resources. [0004] The traditional diesel generating set power supply system selects multiple sets of small and medium-capacity units for combined use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32
CPCY02P80/14H02J3/38H02J3/32
Inventor 李岚杨建廷刘海霞王宇龙叶吉亮王浩
Owner TAIYUAN UNIV OF TECH
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