摘要：【中文】本发明公开了一种电气化铁路接触网电气性能评估方法，属于电气化铁路供电技术领域。供电臂分为区段1和区段2；上行接触线T1自阻抗为Z_T1，下行接触线T2自阻抗为Z_T2，复线直供接触网的互阻抗为Z_TT；当列车在区段1供电臂的首端时，同步测量区段1上行接触线T1的首端电压和末端电压，上行接触线T1的电流，下行接触线T2的首端电压和末端电压，下行接触线T2电流；当列车在区段1供电臂的末端时，同步测量区段1上行接触线T1的首端电压、末端电压、上行接触线T1的电流、下行接触线T2的首端电压、末端电压、下行接触线T2的电流。利用虚拟阻抗与虚拟阻抗理论值的差异可以对接触网区段电气性能变化趋势进行记录和评判。 【EN】The invention discloses an electric performance evaluation method for an electrified railway contact network, and belongs to the technical field of electrified railway power supply. The power supply arm is divided into a section 1 and a section 2; the upper contact line T1 has a self-impedance of Z_T1The self-impedance of the lower contact line T2 is Z_T2The mutual impedance of the complex line direct supply contact net is Z_TT(ii) a Synchronously measuring the head end voltage and the tail end voltage of an uplink contact line T1, the current of an uplink contact line T1, the head end voltage and the tail end voltage of a downlink contact line T2 and the current of a downlink contact line T2 of the section 1 when a train is at the head end of a power supply arm of the section 1; simultaneously measuring the head end voltage, the tail end voltage of the section 1 up contact line T1, the electricity of the up contact line T1 when the train is at the tail end of the section 1 power armCurrent, head voltage, tail voltage of down contact line T2, and current of down contact line T2. The difference between the virtual impedance and the theoretical value of the virtual impedance can be used for recording and judging the change trend of the electrical performance of the contact network section.

摘要：【中文】本发明公开了一种AT供电接触网电气性能评估方法，属于电气化铁路供电技术领域。若AT段内无车时，AT段接触线T首端和末端电流幅值基本相等，且电流方向相同(以变电所为参考)，当车进入AT段时，AT段首端电流会有较大增加，且将大于接触线T末端电流。当车在AT段末端时，AT段接触线T首端和末端电流幅值不相等，当车驶出AT段末端时，AT段接触线T首端和末端电流幅值相等，且电流方向相同。在列车每次驶入AT段和驶出AT段后计算接触线T的虚拟阻抗，负馈线F的虚拟阻抗。利用接触线T、负馈线F的虚拟阻抗与相应的虚拟阻抗理论值的差异识别接触线断线等情况，对AT接触网电气性能变化趋势进行记录和评判。 【EN】The invention discloses an electrical performance evaluation method for an AT power supply contact network, and belongs to the technical field of electrified railway power supply. If there is no vehicle in the AT section, the current amplitudes of the head end and the tail end of the contact wire T in the AT section are basically equal, and the current directions are the same (taking a power substation as reference), when the vehicle enters the AT section, the current of the head end of the AT section is greatly increased and is larger than the current of the tail end of the contact wire T. When the vehicle is AT the tail end of the AT section, the current amplitudes of the head end and the tail end of the AT section contact wire T are unequal, and when the vehicle drives out of the tail end of the AT section, the current amplitudes of the head end and the tail end of the AT section contact wire T are equal, and the current directions are the same. And calculating the virtual impedance of the contact line T and the virtual impedance of the negative feeder F after the train enters the AT section and exits the AT section each time. And identifying the conditions of disconnection and the like of the contact line by using the difference between the virtual impedance of the contact line T and the negative feeder line F and the corresponding theoretical value of the virtual impedance, and recording and judging the change trend of the electrical performance of the AT contact network.

摘要：【中文】本发明提供一种电气化铁路接触网融冰回路及其控制方法，涉及电气化铁路供电技术领域。设有电压互感器VT的牵引母线TB的首端并接在匹配变压器MT原边线路中的开关K1和开关K2之间；匹配变压器MT次边的g抽头与静止无功发生器SVG1的a端子连接；静止无功发生器SVG1的b端子与钢轨T连接；供电臂首端C1串接开关K3后并接在匹配变压器MT次边的g抽头与静止无功发生器SVG1的a端子的连线之间，供电臂首端C1与K3连线之间设有电流互感器CT，供电臂首端C1串接开关K4与牵引母线TB连接；静止无功发生器SVG2的c端子串接开关K5并接于供电臂末端C2，静止无功发生器SVG2的d端子与钢轨T连接。 【EN】The invention provides an ice melting loop of an overhead contact system of an electrified railway and a control method thereof, and relates to the technical field of power supply of the electrified railway. The head end of a traction bus TB provided with a voltage transformer VT is connected in parallel between a switch K1 and a switch K2 in a primary side circuit of a matching transformer MT; a tap g of the MT secondary side of the matching transformer is connected with a terminal a of the SVG 1; a terminal b of the static var generator SVG1 is connected with the steel rail T; a power supply arm head end C1 is connected in series with a switch K3 and then connected in parallel between a g tap of the MT secondary side of the matching transformer and a connection line of an a terminal of the SVG1, a current transformer CT is arranged between the connection lines of the power supply arm head end C1 and the power supply arm K3, and a power supply arm head end C1 is connected in series with a switch K4 and a traction bus TB; the terminal C of the static var generator SVG2 is connected in series with the switch K5 and connected in parallel with the terminal C2 of the power supply arm, and the terminal d of the static var generator SVG2 is connected with the steel rail T.

摘要：【中文】本发明公开了一种单线直供电气化铁路接触网电气性能评估方法，属于电气化铁路供电技术领域。接触网分为多个区段，保证每一时刻在同一区段只能有一列车运行，在列车每次驶入区段或驶出区段后计算接触线虚拟阻抗，利用虚拟阻抗与相应的虚拟阻抗理论值的差异识别接触线断线等情况，对接触网区段电气性能变化趋势进行记录和评判，当其变化量超过设定值时，对该区段进行检修和维修，减少事故的发生。广泛适用于单线直供电气化铁路直接供电系统的接触网性能评判。 【EN】The invention discloses an electric performance evaluation method for a single-line direct-supply electrified railway contact network, and belongs to the technical field of electrified railway power supply. The contact net is divided into a plurality of sections, only one train can run in the same section at each moment, the virtual impedance of the contact line is calculated after the train enters the section or exits the section every time, the conditions of disconnection and the like of the contact line are identified by utilizing the difference between the virtual impedance and the corresponding theoretical value of the virtual impedance, the change trend of the electrical performance of the contact net section is recorded and judged, and when the change quantity of the change quantity exceeds a set value, the section is overhauled and maintained, so that the occurrence of accidents is reduced. The method is widely applicable to the performance evaluation of the contact network of the single-line direct power supply gasification railway direct power supply system.