Solar thermal power generation gridconnected control communication method

A technology for controlling communication and solar energy, applied in electrical components, data exchange networks, single-network parallel feeding arrangements, etc., to achieve good application and development prospects, and improve the effect of absorption capacity

Active Publication Date: 2014-11-19
STATE GRID HENAN XINYE POWER SUPPLY CO
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Problems solved by technology

However, the communication process is aimed at the system itself, and has not formed a complete system requ

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  • Solar thermal power generation gridconnected control communication method

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[0018] Such as figure 1 As shown, a solar power generation grid-connected control communication method includes the following steps:

[0019] 1) Set the sampling period T, and perform statistics on the power parameters of the solar power grid within T;

[0020] Suppose the sampling period is 4 hours, then the sampling data includes the photovoltaic power generation E of the solar grid in 4 hours 1 , Load power consumption E 2 , The allowable charging capacity E of the energy storage element 3 , Allowable discharge E 4 And grid maximum power generation P 0 .

[0021] 2) Calculate the average power parameters based on the power parameters, and determine the grid-connected power limit value of the solar grid;

[0022] The ratio of periodic power consumption to time is the average power, and the average power parameter within 4 hours is the photovoltaic power generation parameter P 1 =E 1 / 4, load power P 2 =E 2 / 4. Allowable charging power P of energy storage element 3 =E 3 / 4. Allow...

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Abstract

The invention provides a solar thermal power generation gridconnected control communication method, and realizes effective communication between a lower level power grid state and an upper level power grid dispatching instruction under a gridconnected state. The method adopts power as the primary communication parameter, and comprises the steps of processing and exchanging limit value, average value, deviation value, and correction value of power of each unit, and realizing communication with the upper level power grid system such as a local power grid dispatching by utilizing fiber Ethernet and TCP/IP protocol. The solar thermal power generation gridconnected control communication method satisfies the requirement that a solar energy power grid can perform communication feedback according to upper level dispatching instruction during gridconnection, so that controllability of the solar energy power grid by the upper level power grid is manifested, the problem that the distributed power grids are intermittent and uncontrollable is indirectly solved, and the intaking capacity of the whole power grid for intermittent energy of a minitype power system is improved.

Description

technical field [0001] The invention relates to a grid control communication method, in particular to a solar power generation grid-connected control communication method. Background technique [0002] Solar power grids are generally composed of photovoltaic power generation units, energy storage devices, power distribution control systems, loads, and power electronic interfaces, which belong to micro power systems. The system can operate independently and supply power to internal loads, or it can be connected to the grid to supply excess power to the upper grid or to supplement the shortage of its own power generation by the grid. [0003] The invention patent with the application number 201110057738.8 discloses an FPGA-based solar photovoltaic grid-connected inverter control system, which can control the household photovoltaic inverter system to realize grid-connected power generation, predict the power generated by the system, and realize the communication with the grid d...

Claims

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Application Information

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IPC IPC(8): H02J3/38H04L12/24
Inventor 赵颖博张建敏
Owner STATE GRID HENAN XINYE POWER SUPPLY CO
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