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A smart grid multi-objective control system and method

A technology of control systems and smart grids, applied in the field of control systems, can solve problems that affect the economic benefits of power supply enterprises, endanger the safe operation of power systems, and voltage flicker

Active Publication Date: 2015-12-02
NANJING APAITEK TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

These harmonics and reactive power in the public power grid will lead to increased equipment and line losses, causing voltage flicker, frequency change and three-phase imbalance, resulting in serious deterioration of the power quality of the power grid, affecting power transmission efficiency and equipment life, and at the same time It will also affect the economic benefits of power supply enterprises, and even endanger the safe operation of the power system in severe cases

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Embodiment Construction

[0044] Below in conjunction with accompanying drawing, technical content of the present invention is described:

[0045] Such as figure 1 , figure 2 , image 3 As shown, a smart grid multi-objective control system of the present invention is mainly composed of a harmonic and reactive power detection unit (including a sampling unit and a current conditioning circuit) and a control controller (including a communication and a main control chip DSP2812), and the sampling unit Connected to the grid power supply with load, the sampling unit and the controller are connected by a current conditioning circuit, the sampling unit is composed of a voltage transformer and a current transformer, and the voltage transformer and the current transformer are directly connected to the power supply And connected with the current conditioning circuit, its function is to collect the voltage of the grid side and the current of the load side, and the described controller is made up of digital sign...

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Abstract

The invention discloses a system and a method of multiple-target control of an intelligent power grid. Load current harmonics and idle components are directly separated from the system, the fluctuation situations of voltage are monitored at the same time, a multi-objective decision theory is adopted, targets are regulated according to different power qualities, and the work modes of APF, SVG, DVR and other devices are coordinated, so that the aim of improving power grid quality to the maximum extent is reached. The system of the multiple-target control of the intelligent power grid is mainly formed by an idle detecting unit based on self-adaptive linear neuron structural harmonics and a controller, wherein the idle detecting unit based on the self-adaptive linear neuron structural harmonics is mainly formed by a sampling unit, a current control circuit and a control unit. The sampling unit is connected on a power grid power supply with load, and the sampling unit and the control unit are connected through the current control circuit.

Description

technical field [0001] The invention relates to a control system and method, in particular to a smart grid multi-objective control system and method. Background technique [0002] With the development of the economy, the nonlinear power consumption equipment in the power system, especially the power electronic devices (such as: phase-controlled rectifiers, frequency conversion speed control devices) are rapidly increasing and widely used, and the generated harmonics and reactive currents have a great impact on power The pollution of the system is also becoming more and more serious. In modern power grids, inductive loads such as motors, industrial frequency furnaces, and fluorescent lamps occupy a considerable proportion. While consuming active power, they also need to absorb a large amount of reactive power. These harmonics and reactive power in the public power grid will lead to increased equipment and line losses, causing voltage flicker, frequency change and three-phase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/01H02J3/12
CPCY02E40/22Y02E40/40Y02E40/20
Inventor 闫荣超晏祥彪李刚芮国强吴开敏
Owner NANJING APAITEK TECH
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