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Harmonic measuring point optimal allocation method for distribution network

A technology for optimizing configuration and distribution network, applied in forecasting, data processing applications, instruments, etc., can solve the problems of ignoring the harmonic distribution state and being unable to distinguish the harmonic pollution of the busbar, so as to reduce redundant measurement and improve utilization efficiency , reduce the effect of economic input

Active Publication Date: 2015-12-23
SOUTHEAST UNIV
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Problems solved by technology

At present, the power supply company only focuses on the harmonic voltage of the distribution network bus, but ignores its specific harmonic distribution status, which makes it impossible to distinguish which loads the bus harmonic pollution comes from

Method used

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  • Harmonic measuring point optimal allocation method for distribution network
  • Harmonic measuring point optimal allocation method for distribution network
  • Harmonic measuring point optimal allocation method for distribution network

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Embodiment Construction

[0046] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0047] Such as figure 1 As shown, an embodiment of the present invention provides a method for optimizing the configuration of harmonic measurement points for distribution networks, the method includes the following steps:

[0048] Step 10) Acquiring network topology and load side information, constructing network topology database and load side information database.

[0049] Step 10) specifically includes:

[0050]Step 101) Determine the network topology of the power grid according to the spatial layout of each node in the distribution network and the electrical connection mode between nodes, and store the network topology in a database to form a network topology database;

[0051] Step 102) Obtain the load information connected to the nodes in the distribution network, determine whether each node is connected to a load, and the type of loa...

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Abstract

The invention discloses a harmonic measuring point optimal allocation method for a distribution network. The method comprises the following steps: 10) network topology and load-side information are acquired, and a network topology database and a load-side information database are built; 20) information check is carried out, if integrity check requirements are met, a step 30 is carried out, or otherwise, the step 10 is returned; 30) zero injection nodes are judged, and based on the load-side information in the load-side information database, whether the zero injection nodes exist in nodes is judged; 40) preliminary equivalent treatment on the network is carried out, and according to an observability rule, equivalent treatment is carried out on topology of the distribution network, and the topology of the distribution network is simplified; and 50) measuring points are optimally allocated, and according to a measuring point allocation equivalent rule, the system is optimally allocated, and an allocation scheme with the fewest measuring points is acquired. The allocation method can carry out harmonic measuring point optimal allocation on the multi-feeder line distribution network, and system observability is realized by using the minimal measuring allocation points.

Description

technical field [0001] The invention belongs to the technical field of power quality monitoring, and in particular relates to a method for optimizing the configuration of harmonic measurement points used in distribution networks. Background technique [0002] At present, with the rapid development of high-power power electronics technology and a large number of nonlinear loads, such as rectifiers, electric arc furnaces, frequency conversion devices and household appliances, etc. connected to the distribution network, the harmonic pollution in the distribution network has become increasingly serious. Because it has a huge impact on the safe and stable operation of power supply enterprises and the economic benefits of both suppliers and consumers, it has become a common concern of power supply departments and power users. [0003] Wide-area measurement technology provides important data basis for harmonic monitoring of distribution network, harmonic source location and harmoni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/04G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 邱海峰顾伟王旭冲储佳伟
Owner SOUTHEAST UNIV
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