Fuzzy Comprehensive Evaluation Method for HVDC Relay Performance

doi:10.16628/j.cnki.2095-8188.2020.09.006

Abstract

Abstract:

In order to evaluate the performance of HVDC relays,a fuzzy comprehensive evaluation method based on cloud matter-element theory was proposed.Firstly,the evaluation system of the performance index of HVDC relay is established.Due to the randomness of the index parameters and the fuzziness of its rank boundary value,the cloud matter element theory is used to determine the membership degree of the relay performance index,and the improved analytic hierarchy process (AHP) and the CRITIC method are combined to determine the combination weight,then according to the membership degree and the combination weight,the fuzzy comprehensive evaluation model is obtained.Finally,the effectiveness of the method is verified by an example of performance evaluation of HVDC relay.

Key words: fuzzy comprehensive evaluation method, HVDC relay, cloud matter-element theory, AHP, CRITIC method

CLC Number:

TM581.4

WEI Huihui, LIU Xiangjun. Fuzzy Comprehensive Evaluation Method for HVDC Relay Performance[J]. LOW VOLTAGE APPARATUS, 2020, 594(9): 30-35.

Figures/Tables 5

References 15

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参数	实测值
参数	继电器1	继电器2	继电器3
吸合电压/V	6.10	7.27	7.00
接触电阻/mΩ	0.376 5	0.461 0	0.427 8
触头终压力/N	7.77	6.51	6.16
吸合时间/ms	20.55	22.40	23.33
释放时间/ms	2.59	2.50	2.37
触头闭合速度/(m·s^-1)	0.139	0.191	0.169
触头分断速度/(m·s^-1)	0.453 6	0.603 8	0.586 0
开距/mm	1.73	1.82	1.65
触头左右偏移/mm	0.55	0.19	0.34
触头前后偏移/mm	0.18	0.18	0.21

评估指标	等级界限
评估指标	优秀	较好	一般	异常
吸合电压/V	≤6.080 0	(6.080 0,6.960 0]	(6.960 0,9.000 0]	>9
接触电阻/mΩ	≤0.266 7	(0.266 7,0.533 3]	(0.533 3,0.800 0]	>0.800
触头终压力/N	>7.840 0	(6.520 0,7.840 0]	(5.200 0,6.520 0]	≤5.200 0
吸合时间/ms	≤10	(10,20]	(20,30]	>30
释放时间/ms	≤3.333 3	(3.333 3,6.664 7]	(6.666 7,10.000 0]	>10
触头闭合速度/(m·s^-1)	≤0.058 0	(0.058 0,0.116 0]	(0.116 0,0.174 0]	>0.174 0
触头分断速度/(m·s^-1)	>0.493 7	(0.329 1,0.493 7]	(0.164 6,0.329 4]	≤ 0.164 6
开距/mm	>1.628 0	(1.564 0,1.628 0]	(1.500 0,1.564 0]	≤1.500 0
触头左右偏移/mm	≤0.142 9	(0.142 9,0.285 7]	(0.285 7,0.428 6]	>0.428 6
触头前后偏移/mm	≤0.142 9	(0.142 9,0.285 7]	(0.285 7,0.428 6]	>0.428 6

评估指标	等级界限云模型的数字特征(E_x,E_n,H_e)
评估指标	优秀	较好	一般	异常
吸合电压/V	(5.640 0,0.373 7,0.002 0)	(6.520 0,0.373 7,0.002 0)	(7.980 0,0.866 3,0.002 0)	(12.000 0,1.000 0,0.002 0)
接触电阻/mΩ	(0.133 4,0.113 3,0.002 0)	(0.400 0,0.113 2,0.002 0)	(0.666 7,0.113 3,0.002 0)	(0.933 3,0.044 4,0.002 0)
触头终压力/N	(8.500 0,0.560 6,0.002 0)	(7.180 0,0.560 6,0.002 0)	(5.860 0,0.560 6,0.002 0)	(4.540 0,0.220 0,0.002 0)
吸合时间/ms	(5.000 0,4.246 6,0.002 0)	(15.000 0,4.246 6,0.002 0)	(25.000 0,4.246 6,0.002 0)	(35.000 0,1.666 7,0.002 0)
释放时间/ms	(1.666 7,1.415 4,0.002 0)	(5.000 0,1.415 8,0.002 0)	(8.333 5,1.415 4,0.002 0)	(11.666 5,0.444 3,0.002 0)
触头闭合速度/(m·s^-1)	(0.029 0,0.0246 3,0.002 0)	(0.087 0,0.024 6,0.002 0)	(0.145 0,0.024 6,0.002 0)	(0.203 0,0.009 7,0.002 0)
触头分断速度/(m·s^-1)	(0.576 0,0.069 9,0.002 0)	(0.411 4,0.069 9,0.002 0)	(0.027 9,0.069 9,0.002 0)	(0.082 3,0.027 4,0.002 0)
开距/mm	(1.660 0,0.027 2,0.002 0)	(1.596 0,0.027 2,0.002 0)	(1.532 0,0.027 2,0.002 0)	(1.468 0,0.010 7,0.002 0)
触头左右偏移/mm	(0.071 0,0.060 8,0.002 0)	(0.214 5,0.060 7,0.002 0)	(0.357 5,0.060 7,0.002 0)	(0.500 0,0.023 7,0.002 0)
触头前后偏移/mm	(0.071 0,0.060 8,0.002 0)	(0.214 5,0.060 7,0.002 0)	(0.357 5,0.060 7,0.002 0)	(0.500 0,0.023 7,0.002 0)

一级指标	主观权重	客观权重	组合权重	二级指标	主观权重	客观权重	组合权重	三级指标	主观权重	客观权重	组合权重
W₁	0.148 3	0.293 7	0.118 3	W₁₁	0.576 1	0.209 7	0.459 4
				W₁₂	0.148 3	0.612 4	0.345 2
				W₁₃	0.288 9	0.177 9	0.195 4
W₂	0.288 9	0.266 2	0.208 9	W₁₃	0.288 9	0.177 9	0.195 4
				W₂₁	0.268 9	0.436 8	0.221 9
				W₂₂	0.731 1	0.563 2	0.778 1
W₃	0.562 7	0.440 2	0.672 8	W₃₁	0.562 7	0.586 0	0.738 5	W₃₁₁	0.268 9	0.462 7	0.240 5
				W₃₁	0.562 7	0.586 0	0.738 5	W₃₁₂	0.731 1	0.537 3	0.759 5
				W₃₂	0.148 3	0.020 3	0.006 7
				W₃₃	0.288 9	0.393 7	0.252 5	W₃₃₁	0.500 0	0.118 5	0.118 5
				W₃₃	0.288 9	0.393 7	0.252 5	W₃₃₂	0.500 0	0.881 5	0.881 5