淮海工学院学报（自然科学版）
淮海工學院學報（自然科學版）
회해공학원학보（자연과학판）
JOURNAL OF HUAIHAI INSTITUTE OF TECHNOLOGY(NATURAL SCIENCES EDITION)
2014年
2期
28-31
,共4页
采样值差动%比率制动%特性曲线%平衡系数%测试方法
採樣值差動%比率製動%特性麯線%平衡繫數%測試方法
채양치차동%비솔제동%특성곡선%평형계수%측시방법
sampling value differential protection%ratio brake%characteristic curve%balance coef-ficient%test method
通过分析数字式变压器比率制动差动保护特性曲线的平衡系数及相位关系，并依据变压器绕组接线组别，得出平衡系数与修正系数关系和新的曲线测试方法。通过分析双绕组、三绕组变压器Yd11，YN YN d12.11两种接线组别差动保护的测试数据，得出与其使用传统测试方法所得制动曲线完全吻合。验证该方法无论采用何种保护测试仪测试变压器差动保护特性曲线，都无需通过调整平衡系数就可完整地进行制动曲线测试。最后通过永安供电公司现场试验证明，新方法有效、实用、正确。
通過分析數字式變壓器比率製動差動保護特性麯線的平衡繫數及相位關繫，併依據變壓器繞組接線組彆，得齣平衡繫數與脩正繫數關繫和新的麯線測試方法。通過分析雙繞組、三繞組變壓器Yd11，YN YN d12.11兩種接線組彆差動保護的測試數據，得齣與其使用傳統測試方法所得製動麯線完全吻閤。驗證該方法無論採用何種保護測試儀測試變壓器差動保護特性麯線，都無需通過調整平衡繫數就可完整地進行製動麯線測試。最後通過永安供電公司現場試驗證明，新方法有效、實用、正確。
통과분석수자식변압기비솔제동차동보호특성곡선적평형계수급상위관계，병의거변압기요조접선조별，득출평형계수여수정계수관계화신적곡선측시방법。통과분석쌍요조、삼요조변압기Yd11，YN YN d12.11량충접선조별차동보호적측시수거，득출여기사용전통측시방법소득제동곡선완전문합。험증해방법무론채용하충보호측시의측시변압기차동보호특성곡선，도무수통과조정평형계수취가완정지진행제동곡선측시。최후통과영안공전공사현장시험증명，신방법유효、실용、정학。
Based on an analysis to the balance coefficient and phase relationship in digital trans-former ratio brake differential protection characteristic curve in respect to the transformer wind-ing connection categories,we obtained the testing method of balance coefficient and its new curve relationship with correction coefficient.An analysis to testing data of the duplex and three-wind-ingYd1 1 and YN YN d1 2.1 1 transformer differential protection shows that the curve obtained by the proposed testing method conforms well to the braking curve by the conventional testing meth-od.No matter what kind of protection tester is used to test the characteristic curve of transformer differential protection,the method can enable us to test the braking curve without adj usting the balance coefficient.Field test at Yong ’an Power Supply Company showed that the proposed method is effective,correct and easy to be used.
