Evaluation and sensitivity analysis for economical operation of active distribution network

Abstract

memberWith the connection of a large number of distributed energy resources to the power grid, the problem of economical operation of an active distribution network (ADN) has restricted its application. According to the economics of ADN operation, an innovative evaluation index system is proposed and a cloud model is established for evaluating the economical operation of an ADN. In addition, a sensitivity analysis is carried out on the value and weight of the index value. First, the ADN accommodation profit rate, ADN loss contribution rate, etc. are defined. In addition, an evaluation index system is established for the economical operation of ADNs. Index weight cloud model, evaluation grade boundary cloud model, correlation evaluation matrix cloud model, and final evaluation results cloud model are proposed based on the three numeric characteristics of the cloud model, namely expectation value (Ex), entropy (En), and hyper entropy (He). Our evaluation results are close to the actual ones considering uncertainty. Besides, a method for analyzing the the index value and index weight is proposed, which provides a basis for improving the economical operation of ADNs. Finally, simulation results demonstrate the rationale and validity of the index system and the evaluation method of the cloud model, as well as the practicability of sensitive analysis.

Adaptability Evaluation of Distributed Power Sources Connected to Distribution Network

“…Compared with the traditional power distribution network, the power distribution network with new energy generation is different in many aspects. The adaptability evaluation of traditional energy access to distribution network is mainly based on the characteristics of distribution network, such as power supply reliability of urban distribution network [8][9][10][11], household power supply demand characteristics [10], economic analysis [12][13][14] and power system elasticity [15][16]. The traditional research object is based on the stability of distribution network.…”

Economic Operation Evaluation of Active Distribution Network Based on Fuzzy Borda Method

“…Formula (11) is used to calculate the membership scores of the six schemes of the three evaluation methods for the active distribution network, and the results are shown in table 8.…”

“…For the operation evaluation of active distribution network, the evaluation methods adopted include analytic hierarchy process, fuzzy comprehensive evaluation, data envelopment analysis, TOPSIS, set pair analysis and VIKOR, etc. In reference [8], for the evaluation of the economic operation of active distribution network, the index weight cloud model, the evaluation grade boundary cloud model, the related evaluation matrix cloud model and the final evaluation result cloud model are proposed. In literature [9], VIKOR method is applied to the comprehensive evaluation of transmission network planning scheme, and the comprehensive evaluation model of power network planning scheme based on entropy weight method and VIKOR method is established.…”

Multidimensional Data Model and Analysis Method of Economic Operation in Distribution Network

“…Due to distribution network access to large-scale distributed power supply, power supply referred to in this article refers to the sum of power supply data measured from the substation gateway and distributed generation power grid connection. Economic multidimensional analysis of distribution network formula, as shown in equation (1). …”

“…Therefore, the economic operation of the network is of great importance to reduce the network loss of the entire power system. In current researches on distribution network economics, Ma Liye [1], Ding Rongrong [2] and Shi Yong [3] pay attention to the updating of evaluation indexes, Ma Cuiqing [4] and Zhan Xuedan [5] focus on the improvement of algorithms, which are limited to analyzing the operation data of distribution networks, seldom considering weather, Environment and other factors on the distribution network economy. Song Shenghe [6], Jiang Lizhen [7] and Wang Ping [8] proposed that with the distributed power, electric ________________________ vehicles large-scale access to distribution network, power grid and user interaction increasingly frequent supply and demand, distribution network structure, control methods and operating conditions have undergone significant changes in intermittent and uncertain energy source with the match The impact of grid loss on power grids poses a tremendous challenge to the economical operation of smart distribution networks.…”