An optimal configuration method for power quality monitors in ring-shaped multi-source distribution networks
A quality monitor, optimized configuration technology, used in circuit devices, instruments, electrical components, etc.
Active Publication Date: 2018-05-08
ZHEJIANG UNIV OF TECH
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[0004] The present invention overcomes the problem that the existing PQM optimization configuration method cannot be effectively applied to the ring power grid with multiple power sources, based on the definition of positive direction, bidirectional equivalent lines and endpoints, and the construction of the modified adjacency matrix and power flow direction matrix to realize the system structure information Define different weight factors to quantify the importance of each attribute endpoint, establish an optimal configuration model for system monitoring points and check the system ambiguity by monitoring the observable matrix, and screen out the PQM optimal configuration scheme for the ring multi-source network
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[0065] The present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto. The overall block diagram of a power quality monitor optimal configuration method for a ring-shaped distribution network in the embodiment is shown in the attached figure 1 shown, including the following steps:
[0066] 1. Define a new concept applicable to the topology analysis of the ring multi-source grid structure: different from the characteristics of the radial grid structure, the operation mode and state of the ring multi-source grid are variable, and there are many possibilities for the current flow of some lines, thus affecting each The monitoring range of node configuration PQM requires all possible situations to be taken into consideration;
[0067] Step 101, regulation of positive direction: in order to match the PQDS direction determination method, a fixed coordi...
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The electric energy quality monitor optimization configuration method comprises steps of 1) defining a new concept applicable to annular multi-source power grid structure topology analysis, 2) constructing a annular multi-source power grid structure representation matrix, 3) defining weighing factors, 4) defining a fuzziness degree, 5) establishing an electric energy quality monitor optimization configuration model, and 6) solving the optimization model and determining an optimal configuration scheme of the system electric energy quality monitor. The step 1 comprises positive direction definition, definition of a two-way equivalent circuit and definition of a terminal; the step 2 comprises construction of a correction adjacent matrix, construction of system structure matrix, construction of a trend direction matrix and construction of a monitoring observable matrix; the steps 3 comprises electric energy quality monitor arrangement generality criterion conclusion, classification on various terminal attributes and definition of corresponding weighting coefficients; and the step 4 comprises steps of definition of a system integral fuzziness degree, definition of partial maximum fuzziness and definition of a monitoring system fuzziness.
Description
technical field [0001] The invention relates to an optimal configuration method for a power quality monitor of a ring-shaped multi-source distribution network, belonging to the fields of electrical engineering and power quality. Background technique [0002] In the future smart distribution network, it has become a development trend to construct a networked power quality monitoring system (networked power quality monitoring system, NPQMS) that can simultaneously realize multi-point continuous, online measurement and information fusion. However, due to the limitations of funds and technology, as well as the data redundancy and heavy communication tasks caused by the large-scale deployment of power quality monitors (PQM), how to make the optimal choice for the number and installation location of PQM in NPQMS, That is, it is of great significance to realize the optimal configuration of PQM. [0003] At present, there are few research results related to PQM optimal configuratio...
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IPC IPC(8): H02J3/00G06F17/50
CPCG06F30/18G06F2111/04H02J3/00H02J2203/20Y02E60/00
Inventor 翁国庆黄飞腾朱双双林雨丰方敏佳王妍彦
Owner ZHEJIANG UNIV OF TECH