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Interval Evaluation Method of Distribution Network Fault Restoration Scheme Considering Load Uncertainty

A technology of distribution network fault and recovery scheme, applied in the field of power system, to achieve the effect of wide applicability

Active Publication Date: 2021-12-03
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides an interval evaluation method for distribution network fault recovery schemes considering load uncertainty, which effectively solves the fault recovery scheme evaluation in the case of load uncertainty

Method used

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  • Interval Evaluation Method of Distribution Network Fault Restoration Scheme Considering Load Uncertainty
  • Interval Evaluation Method of Distribution Network Fault Restoration Scheme Considering Load Uncertainty
  • Interval Evaluation Method of Distribution Network Fault Restoration Scheme Considering Load Uncertainty

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Embodiment

[0122] For verifying the inventive method, adopt such as figure 2 The shown six-feeder power distribution network system verifies the validity of the method of the present invention; in this network, Z 16 Area (feeder F 2 Exit) has a permanent failure. Assuming that the variation range of the load uncertainty of all feeders is ±5%, a fault recovery candidate scheme set is formed, and the interval numbers of each evaluation index are calculated, as shown in Table 1.

[0123] Table 1 The interval number of fault recovery candidate schemes and evaluation indicators considering load uncertainty

[0124]

[0125] In the evaluation indicators of the fault recovery scheme, the load recovery indicator I 1 and load capacity margin I 2 It is a benefit-type index, and the number of switch operations is an index I 3 , load transfer index I 4 and load balancing rate index I 5 is a cost indicator.

[0126] Compute the normalized decision matrix for the evaluation of failure reco...

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Abstract

The present invention provides a distribution network fault recovery scheme interval assessment method considering load uncertainty, including the following steps: Step 1: constructing a distribution network fault recovery scheme evaluation index set; Step 2: constructing a fault recovery scheme evaluation interval number decision Matrix and normalized decision matrix; Step 3: Construct the weighted normalized decision matrix for fault recovery scheme evaluation; Step 4: Construct the proximity matrix and weighted proximity matrix for fault recovery scheme evaluation; Step 5: Calculate the group ideal point and The recovery plan is about the proximity of the ideal point of the group; Step 6: Evaluate the fault recovery plan according to the proximity; the present invention effectively solves the problem of fault recovery plan evaluation under uncertain load conditions, reduces the influence of human factors, and can give a more scientific objective decision making.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a method for evaluating intervals of distribution network fault recovery schemes in consideration of load uncertainty. Background technique [0002] Distribution network fault recovery is the core key technology to realize self-healing control of smart grid. Due to various fault recovery objectives and a large set of candidate schemes, it is difficult for dispatchers to make optimal recovery decisions in the shortest time; therefore, distribution network fault recovery Scheme evaluation is of great significance to the safe and economical operation of the distribution network; in the actual operation of the distribution network, the load of each node often changes randomly, with certain uncertainty; therefore, the fault recovery based on the fixed load value The scheme does not necessarily correspond to the optimal operation mode of the distribution network under the new l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 臧天磊罗杰何正友向悦萍韦晓广杨健维符玲
Owner SOUTHWEST JIAOTONG UNIV
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