Transformer area photovoltaic grid-connected point voltage adjusting method
A voltage regulation, photovoltaic power generation technology, applied in the direction of AC network voltage regulation, photovoltaic power generation, single-grid parallel feeding arrangement, etc. and economic effects
Pending Publication Date: 2022-08-09
STATE GRID FUJIAN ELECTRIC POWER RES INST +1
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Aiming at the defects and deficiencies of the existing technology, the present invention proposes a voltage adjustment method for photovoltaic grid-connected points in the station area, which sinks the algorithm to the intelligent terminal in the station area, effectively solves the problem of the node voltage exceeding the limit in the distributed photovoltaic station area, and realizes Distributed photovoltaic high penetration station area voltage quality control
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings, according to the detailed description, those skilled in the art can clearly understand the present application and can implement the present application. Without departing from the principles of the present application, the features of the various embodiments may be combined to obtain new embodiments, or instead of certain features of certain embodiments, other preferred embodiments may be obtained.
[0028] In order to make the features and advantages of this patent more obvious and easy to understand, the following specific examples are given, and the accompanying drawings are described in detail as follows:
[0029] like figure 1 As shown, it is a typical configuration diagram of a station area to which the method proposed in the embodiment of the present invention is applicable, including one smart terminal, no less than one photovolt...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a transformer area photovoltaic grid-connected point voltage adjusting method. The method comprises the following steps: firstly, inputting photovoltaic power generation power and grid-connected point voltage at the current moment; secondly, judging whether the voltage of the photovoltaic grid-connected point at the current moment is out of limit or not; and if the grid-connected point voltage is out-of-limit, the photovoltaic power generation power is reduced. And if the grid-connected point voltage does not exceed the limit, the photovoltaic power generation power is not limited. If the voltage of the grid-connected point fluctuates near the out-of-limit value, the power value at the current moment is used as the maximum power of photovoltaic power generation; and finally, adjusting the photovoltaic power generation power according to whether the voltage of the photovoltaic grid-connected point is out of limit or not. According to the method, the photovoltaic power generation power and the grid-connected point voltage data of the transformer area at the current moment are collected, and the photovoltaic grid-connected point voltage is adjusted by limiting the photovoltaic maximum output power at the next moment, so that the photovoltaic grid-connected point voltage meets the voltage quality requirement.
Description
technical field [0001] The invention relates to the technical field of low-voltage intelligent power distribution, in particular to a voltage adjustment method for photovoltaic grid-connected points in a platform area. Background technique [0002] A large number of distributed photovoltaics are connected to the low-voltage distribution network, causing the node voltage in the station area to exceed the limit. Relying on traditional management methods such as photovoltaic installed capacity planning, on-load voltage regulating and capacity regulating transformers, and reactive power compensators cannot effectively solve the problem of photovoltaic grid-connected voltage exceeding the limit. The problem of exceeding the voltage limit in the Taiwan area seriously affects the safety of users' electricity consumption, which may shorten the service life of household appliances or even damage them. SUMMARY OF THE INVENTION [0003] Aiming at the defects and deficiencies of the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02J3/12H02J3/46H02J3/48H02J3/38
CPCH02J3/12H02J3/46H02J3/466H02J3/48H02J3/381H02J2300/24H02J2300/26H02J2203/10Y02E40/30
Inventor陈伟铭范元亮李泽文吴涵黄兴华李怡然陈石川余定文黄秋岑甘露林锐
OwnerSTATE GRID FUJIAN ELECTRIC POWER RES INST