Key deployment position identification method for measuring equipment of active distribution network
A technology of active distribution network and measurement equipment, applied in the direction of forecasting, instrumentation, data processing applications, etc., can solve the problems of system operating state uncertainty, lack, increase in long-term operating costs, etc.
Active Publication Date: 2017-08-08
SHANDONG UNIV OF TECH
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Problems solved by technology
But these all need to know the operation mode, status data, and network topology of the power distribution system. However, the connection and disconnection of distributed power sources or electric vehicles have certain randomness, which makes the topology of the active distribution network flexible and the system The uncertainty of the operating status increases, and even experienced personnel cannot accurately locate the key positions
A large amount of measurement data will be retained during the actual operation of the distribution network system, but not all of the data can reflect the operating status of the system, so non-selective retention of measurement data will increase the cost of long-term operation
In addition, the measurement data also contains information that reflects the operating status of the system, but there is still a lack of relevant methods in China in terms of how to extract this information and use it for the selection or identification of the deployment location of the measurement equipment
Method used
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[0063] Embodiments of the present invention are further described below in conjunction with the accompanying drawings:
[0064] like figure 1 As shown in the present invention, 1. A method for identifying key deployment locations of active distribution network measurement equipment, characterized in that it comprises the following steps:
[0065] a. Establish an initial sample matrix using variable monitoring data when the system is operating at baseline load
[0066] b. For sample matrix After standardization, the standardized matrix X can be obtained. Specifically, the following formula is used:
[0067]
[0068] where x ij is the i-th row and j-th column element of matrix X after normalization, is the sample matrix Elements in row i and column j of ;
[0069] c. Use singular value decomposition to obtain the eigenvalue diagonal matrix Λ and the eigenvector matrix Q, specifically using formula (2) and formula (3):
[0070] u T V U = Λ (2)
[0071] In the formu...
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The present invention relates to the technical field of the optimization of a power distribution network and particularly relates to a key deployment position identification method for the measuring equipment of an active distribution network. The method comprises the step of a, establishing an initial sample matrix (img file = 'DDA 0001267108920000011. TIF 'wi = '62 'he = '50 ') based on the variable monitoring data of a system when the system is running in the reference load manner. According to the technical scheme of the invention, the selection of a key deployment position is completed only based on daily measurement data, so that the method is completely applicable to the multi-point access condition of different distributed power sources. Meanwhile, the method can be implemented without knowing the types, the locations, the number, the grid-connected time and the grid-disconnected time of distributed power sources accessed to the system.
Description
technical field [0001] The invention relates to the technical field of distribution network optimization, in particular to a method for identifying key deployment positions of active distribution network measurement equipment. Background technique [0002] The access of controllable loads such as distributed power sources, energy storage systems, and electric vehicles has had a huge impact on the power flow distribution, power quality, relay protection, and system planning of traditional power grids, which has prompted traditional distribution networks to gradually The active distribution network transformation of power supply and weak ring topology requires the ability to quickly and accurately monitor the real-time operating status of the system, thus making the real-time monitoring of the system more and more important. At present, in addition to traditional measurement equipment such as FTU, measurement equipment such as synchrophasor measurement equipment, micro-synchro...
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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/043G06Q50/06
Inventor 刘洋
Owner SHANDONG UNIV OF TECH