CN110658408A - Test terminal platform and test system of transformer substation safety automatic device - Google Patents
Test terminal platform and test system of transformer substation safety automatic device Download PDFInfo
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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Abstract
The invention provides a test terminal platform of a transformer substation safety automatic device, which comprises a switch chip, a self-adaptive power supply module and a function realization module, wherein the self-adaptive power supply module and the function realization module are connected with the switch chip; the self-adaptive power supply module is connected with the PC and comprises two network ports, two first switches, an external power interface, at least one voltage reduction conversion module and a second switch; the function realization module is also connected with a safety automatic device of the transformer substation; when one network port is connected with a PC or a network device, the other network port is cascaded with the network port of the adjacent test terminal platform, and after adjacent power supply is never received, corresponding switch control is carried out, so that power is supplied to the adjacent test terminal platform by utilizing the network port cascade after local independent power supply is realized, and data is transmitted with the adjacent test terminal platform, the transformer substation safety automatic device, the PC and the like through self networking. The invention can get rid of the dependence on the switch, does not need to be provided with a power supply concentrator or a plurality of power supply sources to be configured independently, and reduces the access cost and difficulty of the test terminal platform and other network equipment.
Description
Technical Field
The invention relates to the technical field of transformer substation safety testing, in particular to a testing terminal platform and a testing system of a transformer substation safety automatic device.
Background
With the development of network technology, various network devices have come along, and the switch also becomes an indispensable device, and can interconnect various network devices needing to be accessed to the network to realize data interaction. However, each network device needs to be configured with a power supply independently, when the number of network devices is large, the wiring is complicated, and the power supply voltages of different types of network devices may be different, which puts higher requirements on the power supply environment in the field.
As shown in fig. 1, in the prior art, a test terminal platform and a PC of an intelligent substation safety automatic device form a test system, and the test system has the advantages of low cost, portability, simplicity and convenience in operation, friendly interface and the like when performing function test, and becomes a mainstream function test means of the current digital safety automatic device. In fig. 1, all the test terminal platforms and PCs in the test system complete data interaction through the industrial ethernet switch, which greatly limits the convenience of the test system, and all devices (including all the test terminal platforms, PCs and industrial ethernet switches) need to be configured with power sources separately, for example, the test terminal platform uses a 220V to 5V DC power source, the industrial ethernet switch uses a 24V DC power source, and if there are other network devices (such as webcam, etc.), there may still be a 48V DC power source requirement, and the field often does not have such many power voltage levels.
Although the Power Over Ethernet (POE) technology that uses network cable to supply power and transmit data is available, the POE technology only supports 48V power, and the power cannot exceed 25.5W at maximum. In a typical power over ethernet system, for example, ethernet switch equipment is maintained in a wiring closet, and a power-over-ethernet hub is used to provide power to the twisted pair lines of the lan. Since this power supply is used to drive telephones, wireless access points, cameras and other devices at the end of the twisted pair, it is not tied to a switch, only supports 48V power, and is low power (the total power can not exceed 25.5W), while the poe system is cumbersome since a separate powered hub is required to power the entire poe system.
Therefore, a testing terminal platform and a testing system are needed to be able to get rid of the dependence on the switch without a power supply hub or separate configuration of multiple power supplies, thereby reducing the access cost and difficulty of the testing terminal platform and other network devices.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a test terminal platform and a test system for a substation safety automatic device, which can get rid of dependence on a switch, do not need to have a power supply hub or separate configuration of multiple power supplies, and reduce the access cost and difficulty of the test terminal platform and other network devices.
In order to solve the technical problem, an embodiment of the present invention provides a test terminal platform for a substation safety automatic device, which is connected between the substation safety automatic device and a PC, and includes a switch chip, and a self-adaptive power supply module and a function implementation module respectively connected to the switch chip; wherein the content of the first and second substances,
the self-adaptive power supply module comprises two network ports, two first switches, an external power interface, at least one voltage reduction conversion module and at least one second switch; each network port comprises an external connection end and an internal connection end, the external connection end is reserved with an Ethernet interface for cascading between adjacent networks or connecting the adjacent networks with the PC or connecting another network device, and the internal connection end comprises a power taking interface and a data interface; the data interfaces of the internal connection ends of the two network ports are connected with the switch chip, and the power taking interfaces of the internal connection ends of the two network ports are interconnected through the two opposite first switches; the external power supply interface is connected between the two first switches; the input end of each voltage reduction conversion module is connected between the two first switches through a corresponding second switch, and the output end of each voltage reduction conversion module is connected with the switch chip;
one end of the function realization module is connected with the switch chip, and the other end of the function realization module is connected with the safety automatic device of the transformer substation;
wherein, the Ethernet interface of one network port to be determined is connected with the PC or a network device, the Ethernet interface of the other network port is cascaded with the Ethernet interface of one network port of the adjacent test terminal platform, and after receiving the power supply of the adjacent test terminal platform from the Ethernet interface which is not cascaded, controlling the first switch corresponding to the cascade network port to be closed and controlling the first switch corresponding to the network port connected with the PC or a network device to be opened, and controlling the external power supply of the external power supply interface and controlling a second switch connected with a corresponding step-down conversion module to be closed according to the voltage condition of the external power supply, so that after local independent power taking is realized, power is transmitted to an adjacent test terminal platform by using a network port cascade, and data is transmitted with the adjacent test terminal platform, the transformer substation safety automatic device, the PC and/or a network device in a networking manner.
When power supply of the adjacent test terminal platform is received through the cascaded Ethernet interface, a first switch corresponding to the cascaded Ethernet interface is controlled to be closed, a first switch corresponding to the network interface connected with the PC or the network equipment is controlled to be opened, the external power interface is controlled to be opened from an external power supply, a second switch connected with a corresponding voltage reduction conversion module is controlled to be closed, and power is taken from the adjacent test terminal platform by utilizing the cascade of the Ethernet interface and is transmitted with the adjacent test terminal platform, the transformer substation safety automatic device, the PC and/or the network equipment in a networking mode.
When the Ethernet interfaces of two network ports are determined to be cascaded with the Ethernet interface of one network port of each adjacent test terminal platform, and power supply of any adjacent test terminal platform is received from the cascaded Ethernet interface, the two first switches corresponding to the two network ports are controlled to be closed, the external power supply of the external power supply interface is controlled to be closed, the second switch connected with the corresponding step-down conversion module is controlled to be closed according to the voltage condition of the external power supply, and therefore after local independent power taking is achieved, the network ports are used for being cascaded to transmit power to all adjacent test terminal platforms, and data are transmitted with the safe automatic device of the transformer substation, the PC and/or a network device in a networking mode through the adjacent test terminal platforms.
When the Ethernet interface of each network port is to be determined to be cascaded with the Ethernet interface of one network port of the adjacent test terminal platform, and power supply of the adjacent test terminal platform is received through the cascaded Ethernet interface, the two first switches corresponding to the two network ports are controlled to be both closed, the external power supply interface is controlled to be disconnected with an external power supply, a second switch connected with a corresponding voltage reduction conversion module is controlled to be closed, and therefore the double-network-port cascade is achieved, electricity is taken from the adjacent test terminal platform, and data are transmitted to the transformer substation safety automatic device, the PC and/or a network device through the adjacent test terminal platform.
When the two Ethernet interfaces of the network port are to be determined to be connected with the PC and a network device respectively, the two first switches are controlled to be switched off, the external power supply of the external power supply interface is controlled, the second switch connected with the corresponding step-down conversion module is controlled to be switched on according to the voltage condition of the external power supply, and data are directly transmitted with the connected substation safety automatic device, the PC and the network device in a networking mode after local independent power taking is achieved.
The number of the buck conversion modules is two, and the number of the second switches is two; one of the two buck conversion modules can realize the buck conversion from DC24-72V to DC5V and is connected with the switch chip through a second switch, and the other one can realize the buck conversion from DC110-220V to DC5V and is connected with the switch chip through another second switch.
The interconnection ends of the two network ports respectively comprise 8 pins, the pins 1, 2, 3 and 6 of each network port form a data interface, and the pins 5 and 8 of each network port are connected in parallel and the pins 4 and 7 are connected in parallel to form a power-taking interface; the two first switches are double-pole double-throw switches; wherein the content of the first and second substances,
when the power-taking interfaces of the two network ports are interconnected through the two opposite first switches, the two parallel pins 5 and 8 corresponding to the two network ports are connected together, and the two parallel pins 4 and 7 corresponding to the two network ports are connected together.
The self-adaptive power supply module further comprises a third switch; wherein the third switch is a double-pole double-throw switch, and the external power interface is connected between the two first switches through the third switch.
The Ethernet interfaces of the two network ports are cascaded with the Ethernet interface of one network port of each adjacent test terminal platform through a super-five type oxygen-free copper network cable or connected with the PC and a network device; and a USB interface for connecting the mobile power supply is reserved on the function realization module.
The embodiment of the invention also provides a test system of the transformer substation safety automatic device, which is used for the transformer substation safety automatic device and comprises the test terminal platform of the transformer substation safety automatic device and the PC.
The embodiment of the invention has the following beneficial effects:
1. the invention adopts the built-in switch chip and the self-adaptive power supply module, can effectively improve the transmission power, get rid of the dependence on switch equipment, does not need to be provided with a power supply concentrator or a plurality of power supply sources to be configured independently, can realize the power supply for other cascaded test terminal platforms by only needing one external power supply of the test terminal platform, and reduces the access cost and difficulty of the test terminal platform and other network equipment;
2. the invention adopts the built-in switch chip and the self-adaptive power supply module, can select different voltages (DC24-220V) to supply power to the whole system according to the field environment, and ensures the internal power utilization safety of the test terminal platform by selecting the corresponding voltage reduction conversion module, thereby improving the system adaptability and reducing the potential safety hazard.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a test system consisting of a test terminal platform and a PC of a substation safety automatic device in the prior art;
fig. 2 is a schematic structural diagram of a test terminal platform of a substation safety automatic device according to an embodiment of the present invention;
fig. 3 is an application view of cascade connection between adjacent test terminal platforms of the substation safety automatic device according to the first embodiment of the present invention;
fig. 4 is another application scenario diagram of cascade connection between adjacent test terminal platforms of the substation safety automatic device according to the first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2, a testing terminal platform of a substation safety automatic device provided in the first embodiment of the present invention is connected between the substation safety automatic device and a PC, and includes a switch chip 1, and a self-adaptive power supply module 2 and a function implementation module 3 respectively connected thereto; wherein the content of the first and second substances,
the adaptive power supply module 2 comprises two network ports 21, two first switches 22, an external power interface 23, at least one buck conversion module 24 and at least one second switch 25; each network port 21 comprises an external connection end and an internal connection end, an ethernet interface O1 used for cascading between adjacent networks or connecting a PC or connecting another network device is reserved at the external connection end, and the internal connection end comprises a power taking interface In2 and a data interface In 1; the data interfaces In1 at the inline ends of the two network ports 21 are both connected with the switch chip 1, and the power taking interfaces In2 at the inline ends of the two network ports 21 are interconnected through the two opposite first switches 22; the external power supply interface 23 is connected between the two first switches 22; the input end of each step-down conversion module 24 is connected between the two first switches 22 through a corresponding second switch 25, and the output end is connected with the switch chip 1;
one end of the function realization module 3 is connected with the switch chip 1, and the other end is connected with a safety automatic device of the transformer substation;
wherein, the Ethernet interface O1 of one network port 21 to be determined is connected with a PC or a network device, the Ethernet interface O1 of the other network port 21 is cascaded with the Ethernet interface of a network port of the adjacent test terminal platform, and after receiving power from the adjacent test terminal platform from the non-cascaded ethernet interface O1, the first switch 22 corresponding to the cascade network port is controlled to be closed, the first switch 22 corresponding to the network port connected with the PC or a network device is controlled to be opened, and controlling an external power supply (DC24-220V) of the external power supply interface 23 and controlling a second switch 25 connected with a corresponding step-down conversion module 24 to be closed according to the voltage condition of the external power supply, so that after local independent power taking is realized, power is supplied to an adjacent test terminal platform by using network port cascade connection, and data is transmitted with the adjacent test terminal platform and a safety automatic device of the transformer substation, a PC and/or a network device in a networking mode.
It should be noted that the switch chip 1 in the test terminal platform implements functions such as data transmission, exchange, instruction transceiving, and control, the adaptive power supply module 2 implements adaptive cascade power supply, and the function implementation module 3 implements other network functions of the test terminal platform, such as transceiving data of a substation safety automatic device, USB power supply data, and the like. Before the test terminal platform is used, all the first switches 22 and the second switches 25 in the adaptive power supply module 2 are touchable physical buttons or virtual buttons, and are initially in an off state, and respective on-off states can be represented by turning on or off corresponding indicator lamps. The first switch 22 corresponding to the network port connected to the PC or the network device performs disconnection processing to prevent the current supplied to the PC or the network device from entering the PC or the network device and affecting the operation of the PC or the network device; the corresponding second switch 25 is selected to be closed in order to enable the buck converter module 24 to output an operating voltage that is compatible with the requirements of the switch chip 1.
It can be understood that, when the test terminal platform receives power supply from the adjacent test terminal platform through the cascade ethernet interface O1, the external power supply (DC24-220V) of the external power interface 23 is controlled to realize local independent power taking, and then power is supplied to the adjacent test terminal platform through the network interface cascade (that is, current transmission is realized by transferring the current from the local power taking interface In2 to the ethernet interface O1 and then to the adjacent cascade ethernet interface O1 and the corresponding power taking interface In 2), and data is transmitted In a network with the adjacent test terminal platform and the safety automatic device of the substation, the PC and/or a network device (that is, data transmission is realized by the local data interface In1 and the adjacent data interface In 1), so that the adjacent test terminal platform can work normally In the interior without separately configuring a power supply, and can complete self-networking transmission data at the same time, the external power supply of one test terminal platform supplies power to other cascaded test terminal platforms without a power supply concentrator or independently configuring a power supply for other cascaded test terminal platforms.
In the first embodiment of the present invention, in addition to the above connection mode and the power supply mode corresponding thereto, the following other conditions can also achieve the same effect, specifically as follows:
for example, when the ethernet interface O1 of one network port 21 is to be determined to be connected to a PC or a network device, and the ethernet interface O1 of another network port 21 is cascaded with the ethernet interface of a network port of an adjacent test terminal platform, and power is received from the adjacent test terminal platform through the cascaded ethernet interface O1, the first switch 22 corresponding to the cascaded network port is controlled to be closed, the first switch 22 corresponding to the network port connected to the PC or the network device is controlled to be opened, the external power interface 23 is controlled to be opened from an external power source (i.e., a power supply does not need to be configured separately), and the second switch 25 connected to the corresponding buck conversion module 24 is controlled to be closed, so that power is taken from the adjacent test terminal platform by using the cascade of the network ports and data is transmitted to the adjacent test terminal platform and the safety automatic device of the substation, the PC and/or the network device.
It can be understood that, because the adjacent test terminal platforms are powered on, only the first switch 22 corresponding to the cascade network port needs to be controlled to be closed, and the external power interface 23 and the external power supply are controlled to be disconnected, and the second switch 25 connected to the corresponding voltage reduction conversion module 24 is controlled to be closed, so that the local test terminal platforms can work normally without independently configuring the power supply, and meanwhile, self-networking transmission data is completed, that is, the external power supply of one test terminal platform supplies power to other cascade test terminal platforms, a power supply concentrator is not needed, and the power supply does not need to be configured independently for other cascade test terminal platforms. The first switch 22 corresponding to the network port connected to the PC or the network device performs disconnection processing to prevent the current supplied to the PC or the network device from entering the PC or the network device and affecting the operation of the PC or the network device; the corresponding second switch 25 is selected to be closed in order to enable the buck converter module 24 to output an operating voltage that is compatible with the requirements of the switch chip 1.
For another example, when it is determined that the ethernet interfaces O1 of the two network ports 21 are both cascaded with the ethernet interface of one network port of the respective adjacent test terminal platform, and power is not received from any adjacent test terminal platform through the cascaded ethernet interface O1, the two first switches 22 corresponding to the two network ports 21 are controlled to be both closed, the external power supply of the external power supply interface 23 is controlled, the second switch 25 connected to the corresponding voltage reduction conversion module 24 is controlled to be closed according to the voltage condition of the external power supply, and after local independent power taking is achieved, power is transmitted to all the adjacent test terminal platforms through the network port cascade, and data is transmitted through the adjacent test terminal platforms and the substation safety automatic device, the PC and/or a network device.
It can be understood that, since power supply from adjacent test terminal platforms is never received, after the external power supply of the external power supply interface 23 is controlled to realize local independent power supply, the two first switches 22 corresponding to the two closed network ports 21 utilize the network port cascade to supply power to the adjacent test terminal platforms, so that the internal work of the adjacent test terminal platforms can be normal on the premise that the adjacent test terminal platforms do not need to be configured with the power supply independently, and meanwhile, self-networking transmission data can be completed, that is, the external power supply of one test terminal platform supplies power to other cascaded test terminal platforms, a power supply concentrator is not needed, and the power supply does not need to be configured for other cascaded test terminal platforms independently. The second switch 25 is selected to be closed, so that the buck conversion module 24 can output the operating voltage required by the switch chip 1.
For another example, when it is determined that the ethernet interfaces O1 of the two network ports 21 are both cascaded with the ethernet interface of one network port of the respective adjacent test terminal platform, and power is received through the cascaded ethernet interface O1 from an adjacent test terminal platform, the two first switches 22 corresponding to the two network ports 21 are controlled to be both closed, the external power source interface 23 is controlled to be disconnected from the external power source, and the second switch 25 connected to the corresponding buck conversion module 24 is controlled to be closed, so that the dual-network-port cascade is realized to take power from the adjacent test terminal platform and transmit data in a network with the substation safety automatic device, the PC and/or a network device through the adjacent test terminal platform.
It can be understood that, because the adjacent test terminal platforms are powered on, the two first switches 22 corresponding to the cascaded network ports are controlled to be closed, and the external power interface 23 is controlled to be disconnected from the external power supply and the second switch 25 connected to the corresponding voltage reduction conversion module 24 is controlled to be closed, so that the local test terminal platforms can work normally without independently configuring a power supply, and meanwhile, self-networking transmission data is completed, that is, the external power supply of one test terminal platform supplies power to other cascaded test terminal platforms, a power supply concentrator is not required, and the power supply does not need to be configured independently for other cascaded test terminal platforms.
In the first embodiment of the present invention, there is also a special case that the local test terminal platform does not have a cascaded test terminal platform, which is specifically as follows:
when it is determined that the ethernet interfaces O1 of the two network ports 21 are connected to the PC and a network device, respectively, the two first switches 22 are controlled to be both off, the external power supply of the external power supply interface 23 is controlled, and the second switch 25 connected to the corresponding buck conversion module 24 is controlled to be on according to the voltage condition of the external power supply, so that data is directly transmitted to the connected substation safety automatic device, the PC and the network device in a networking manner after local independent power taking is realized.
It can be understood that, because of no cascade connection, only local independent power supply can be used to ensure normal internal work. The two first switches 22 corresponding to the network ports connecting the PC and the network device are all turned off to prevent the power supply current from entering the PC and the network device and affecting the operation of the PC and the network device.
In the first embodiment of the present invention, the adaptive power supply module 2 further includes a third switch 26; the external power interface 23 is connected between the two first switches 22 through a third switch 26, and the third switch 26 is used for preventing external electric leakage through the external power interface 23 after cascade power-taking.
In one embodiment, there are two buck converter modules 24 and two second switches 25; one of the two buck conversion modules 24 can realize the buck conversion from DC24-72V to DC5V and is connected with the switch chip 1 through a second switch 25, and the other can realize the buck conversion from DC110-220V to DC5V and is connected with the switch chip 1 through another second switch 25. The interconnection ends of the two network ports 21 respectively comprise 8 pins, the pins 1, 2, 3 and 6 of each network port 21 form a data interface In1, and the pins 5 and 8 of each network port 21 are connected In parallel and the pins 4 and 7 are connected In parallel to form a power-taking interface In 2; both first switches 22 are double-pole double-throw switches; when the power-taking interfaces In2 of the two net ports 21 are interconnected through the two opposite first switches 22, the two parallel pins 5 and 8 corresponding to the two net ports 21 are connected together, and the two parallel pins 4 and 7 corresponding to the two net ports 21 are connected together. Because the two parallel pins 5 and 8 corresponding to the two network ports 21 are connected together, and the two parallel pins 4 and 7 corresponding to the two network ports 21 are connected together, the third switch 26 is also a double-pole double-throw switch at this time. Of course, the second switches 25 are also double pole double throw switches.
In the first embodiment of the present invention, the ethernet interfaces O1 of the two network ports 21 are both cascaded with the ethernet interface of a network port of an adjacent test terminal platform through the super-five oxygen-free copper network cables, or connected with a PC and a network device. Of course, it is not limited to the ultra-five types of oxygen free copper mesh. The wire core is recommended to meet the UL standard, the withstand voltage is more than 300V, the conductor specification is 24AWG or thicker, the data transmission and power supply quality is guaranteed, the current of the AWG wire diameter is as shown in Table 1, the long-term safe electrifying current of the 24AWG wire diameter is 0.808A, in view of safety, the total current of a power supply line is not larger than 1.5A, the power of a single device is not larger than 10W, the total networking power is not larger than 60W, and the potential safety hazard caused by overlarge current in the network wire is prevented; the type of the network wire shielding is preferably STP (shielded twisted pair), which reduces the signal attenuation and crosstalk of the power wire to the signal wire.
Table 1:
fig. 3 is a view of an application scene of cascade connection between adjacent test terminal platforms of the substation safety automatic device according to an embodiment of the present invention. In fig. 3, the left side test terminal platform is externally connected to a power supply to supply power and transmit data to the right side test terminal platform. At this time, the third switch (such as the leftmost switch 3) of the left test terminal platform is controlled to be closed, the first switch (such as the leftmost switch 1) corresponding to the net port (such as the leftmost net port 1) of the left test terminal platform connected with the PC and the first switch (such as the rightmost switch 2) corresponding to the net port (such as the rightmost net port 2) of the right test terminal platform connected with the network equipment are controlled to be opened, the two first switches (such as the middle switch 2 and the switch 1) corresponding to the net ports (such as the net port 2 and the net port 1 cascaded in the middle) cascaded between the left test terminal platform and the right test terminal platform are controlled to be closed to realize current transmission, so that electricity can be taken or transmitted to the cascaded test terminal platforms, and the second switches (such as the switch 4) corresponding to the two cascaded test terminal platforms are controlled to be closed, so that respective switch chips can have normal working voltage, and completing self-networking data transmission. Certainly, the third switch (for example, the rightmost switch 3) of the right test terminal platform needs to be controlled to be turned off, so as to avoid electric leakage.
In the first embodiment of the present invention, a USB interface for connecting a portable power source is reserved on the function implementation module 3, when the field environment is very severe, the portable power source may be used to replace a power source in the adaptive power supply module, and the function implementation module 3 is supplied with power through the USB interface, at this time, the two network ports 21 are only used for cascade connection, and all switches need to be turned off, that is, all the first switch 23, the second switch 25, and the third switch 26 are turned off, so that the portability and the capability of meeting various special situations are enhanced.
Fig. 4 is a diagram of another application scenario of cascade connection between adjacent test terminal platforms of the substation safety automatic device according to the first embodiment of the present invention. In fig. 4, the USB interface of the function implementation module 3 is connected to a mobile power supply of DC5V, and the two network ports 21 are only used for cascading.
Corresponding to the test terminal platform of the transformer substation safety automatic device provided by the first embodiment of the invention, the second embodiment of the invention also provides a test system of the transformer substation safety automatic device, which is used for the transformer substation safety automatic device and comprises the test terminal platform of the transformer substation safety automatic device and a PC (personal computer) in the first embodiment of the invention. Since the test terminal platform of the substation safety automatic device in the second embodiment of the present invention and the test terminal platform of the substation safety automatic device in the first embodiment of the present invention have the same structure and connection relationship, please refer to the test terminal platform of the substation safety automatic device in the first embodiment of the present invention, which is not described herein again.
The embodiment of the invention has the following beneficial effects:
1. the invention adopts the built-in switch chip and the self-adaptive power supply module, can effectively improve the transmission power, get rid of the dependence on switch equipment, does not need to be provided with a power supply concentrator or a plurality of power supply sources to be configured independently, can realize the power supply for other cascaded test terminal platforms by only needing one external power supply of the test terminal platform, and reduces the access cost and difficulty of the test terminal platform and other network equipment;
2. the invention adopts the built-in switch chip and the self-adaptive power supply module, can select different voltages (24-220V) to supply power to the whole system according to the field environment, and ensures the internal power utilization safety of the test terminal platform by selecting the corresponding voltage reduction conversion module, thereby improving the system adaptability and reducing the potential safety hazard.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A test terminal platform of a transformer substation safety automatic device is characterized in that the test terminal platform is connected between the transformer substation safety automatic device and a PC (personal computer), and comprises a switch chip, a self-adaptive power supply module and a function realization module which are respectively connected with the switch chip; wherein the content of the first and second substances,
the self-adaptive power supply module comprises two network ports, two first switches, an external power interface, at least one voltage reduction conversion module and at least one second switch; each network port comprises an external connection end and an internal connection end, the external connection end is reserved with an Ethernet interface for cascading between adjacent networks or connecting the adjacent networks with the PC or connecting another network device, and the internal connection end comprises a power taking interface and a data interface; the data interfaces of the internal connection ends of the two network ports are connected with the switch chip, and the power taking interfaces of the internal connection ends of the two network ports are interconnected through the two opposite first switches; the external power supply interface is connected between the two first switches; the input end of each voltage reduction conversion module is connected between the two first switches through a corresponding second switch, and the output end of each voltage reduction conversion module is connected with the switch chip;
one end of the function realization module is connected with the switch chip, and the other end of the function realization module is connected with the safety automatic device of the transformer substation;
wherein, the Ethernet interface of one network port to be determined is connected with the PC or a network device, the Ethernet interface of the other network port is cascaded with the Ethernet interface of one network port of the adjacent test terminal platform, and after receiving the power supply of the adjacent test terminal platform from the Ethernet interface which is not cascaded, controlling the first switch corresponding to the cascade network port to be closed and controlling the first switch corresponding to the network port connected with the PC or a network device to be opened, and controlling the external power supply of the external power supply interface and controlling a second switch connected with a corresponding step-down conversion module to be closed according to the voltage condition of the external power supply, so that after local independent power taking is realized, power is transmitted to an adjacent test terminal platform by using a network port cascade, and data is transmitted with the adjacent test terminal platform, the transformer substation safety automatic device, the PC and/or a network device in a networking manner.
2. The test terminal platform of the substation safety automatic device according to claim 1, wherein when the ethernet interface of one port to be determined is connected to the PC or a network device, the ethernet interface of another port is cascaded with the ethernet interface of a port of an adjacent test terminal platform, and power is received from the adjacent test terminal platform through the cascaded ethernet interfaces, controlling the first switch corresponding to the cascade network port to be closed and controlling the first switch corresponding to the network port connected with the PC or a network device to be opened, and controlling the external power supply interface to be disconnected with an external power supply and controlling a second switch connected with a corresponding voltage reduction conversion module to be closed, so that power is obtained from an adjacent test terminal platform by utilizing the network interface cascade connection, and data is transmitted with the adjacent test terminal platform, the transformer substation safety automatic device, the PC and/or a network device in a networking mode.
3. The test terminal platform of the substation safety automatic device according to claim 2, wherein the ethernet interfaces of two to-be-determined ports are cascaded with the ethernet interface of one port of each adjacent test terminal platform, and when power is received from any adjacent test terminal platform through the cascaded ethernet interfaces, the two first switches corresponding to the two ports are controlled to be closed, the external power supply of the external power supply interface is controlled, the second switch connected with a corresponding voltage reduction conversion module is controlled to be closed according to the voltage condition of the external power supply, so that after local independent power taking is achieved, the power is transmitted to all adjacent test terminal platforms through the cascade of the ports, and data is transmitted with the substation safety automatic device, the PC and/or a network device through the adjacent test terminal platforms in a networking manner.
4. The test terminal platform of the substation safety automatic device according to claim 3, wherein the ethernet interfaces of two to-be-determined ports are cascaded with the ethernet interface of a port of the respective adjacent test terminal platform, and when power supply of an adjacent test terminal platform is received through the cascaded ethernet interfaces, the two first switches corresponding to the two ports are controlled to be both closed, the external power supply interface is controlled to be disconnected from the external power supply, and the second switch connected to the corresponding step-down conversion module is controlled to be closed, so that the dual-port cascade is realized to take power from the adjacent test terminal platform and transmit data with the substation safety automatic device, the PC and/or a network device through the adjacent test terminal platform in a networking manner.
5. The test terminal platform of the substation safety automatic device according to claim 4, wherein when it is determined that the ethernet interfaces of the two ports are respectively connected to the PC and a network device, the two first switches are controlled to be both off, the external power supply of the external power supply interface is controlled, and the second switch connected to the corresponding step-down conversion module is controlled to be on according to the voltage condition of the external power supply, so that data are directly transmitted to the connected substation safety automatic device, the PC and the network device in a networking manner after local independent power supply is achieved.
6. The test terminal platform of the substation safety automation device of any one of claims 1 to 5, characterized in that there are two of the buck converter modules and two of the second switches; one of the two buck conversion modules can realize the buck conversion from DC24-72V to DC5V and is connected with the switch chip through a second switch, and the other one can realize the buck conversion from DC110-220V to DC5V and is connected with the switch chip through another second switch.
7. The test terminal platform of the substation safety automatic device according to claim 6, wherein the inline ends of the two network ports each include 8 pins, and the pins 1, 2, 3, and 6 included in each network port form a data interface, and the pins 5 and 8 included in each network port are connected in parallel and the pins 4 and 7 are connected in parallel to form a power-taking interface; the two first switches are double-pole double-throw switches; wherein the content of the first and second substances,
when the power-taking interfaces of the two network ports are interconnected through the two opposite first switches, the two parallel pins 5 and 8 corresponding to the two network ports are connected together, and the two parallel pins 4 and 7 corresponding to the two network ports are connected together.
8. The substation safety automation device test terminal platform of claim 7, the adaptive power supply module further comprising a third switch; wherein the third switch is a double-pole double-throw switch, and the external power interface is connected between the two first switches through the third switch.
9. The test terminal platform of the substation safety automatic device according to claim 8, wherein the ethernet interfaces of the two network ports are cascaded with the ethernet interface of one network port of each adjacent test terminal platform through a super five-class oxygen-free copper network cable, or are connected with the PC and a network device; and a USB interface for connecting the mobile power supply is reserved on the function realization module.
10. A testing system for a substation safety automatic device, which is used for the substation safety automatic device, and is characterized by comprising the testing terminal platform of the substation safety automatic device and a PC (personal computer) according to any one of claims 1-9.
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664741A (en) * | 2012-04-12 | 2012-09-12 | 上海芯域微电子有限公司 | Method and device of power over Ethernet |
| CN102692967A (en) * | 2012-05-14 | 2012-09-26 | 江苏中科梦兰电子科技有限公司 | Computer mainboard circuit capable of supporting various power adapters |
| CN102761422A (en) * | 2012-07-27 | 2012-10-31 | 深圳市东微智能科技有限公司 | Cascaded Ethernet power supply system and Ethernet power supply method thereof |
| CN103825749A (en) * | 2014-02-28 | 2014-05-28 | 北京腾控科技有限公司 | Cascaded synchronous large-scale data collecting system based on network and distributed type power supply |
| EP2770664A1 (en) * | 2012-12-28 | 2014-08-27 | Huawei Technologies Co., Ltd. | Ethernet power supply method, apparatus, device and system |
| CN204291007U (en) * | 2014-11-05 | 2015-04-22 | 国网山东省电力公司青岛供电公司 | A kind of electric power system Power over Ethernet device |
| CN205265731U (en) * | 2015-12-16 | 2016-05-25 | 深圳市世纪本原科技股份有限公司 | Ethernet power supply switch |
| CN107342871A (en) * | 2017-07-05 | 2017-11-10 | 广州市金宏骏科技工程有限公司 | A kind of POE electric supply installations and method |
| CN107357193A (en) * | 2017-01-17 | 2017-11-17 | 国电南瑞科技股份有限公司 | A kind of method for realizing intelligent substation automatic safety device test system |
| CN107819589A (en) * | 2016-09-12 | 2018-03-20 | 中兴通讯股份有限公司 | POE system and method |
| CN107846286A (en) * | 2017-10-19 | 2018-03-27 | 浙江大华技术股份有限公司 | It is a kind of for the electric supply installation of cascade, method of supplying power to and cascade electric power system |
| CN108173342A (en) * | 2017-11-22 | 2018-06-15 | 兰州海红技术股份有限公司 | The communication of adaptive voltage grade and powering mode monitors system with direct current power supply and distribution |
| CN208158608U (en) * | 2017-11-24 | 2018-11-27 | 浙江大华技术股份有限公司 | A kind of cascade power supply unit of double network interfaces |
| CN109088478A (en) * | 2018-10-17 | 2018-12-25 | 江苏久创电气科技有限公司 | A kind of distribution transformer remote terminal unit |
| CN208337692U (en) * | 2018-04-25 | 2019-01-04 | 杭州海康威视数字技术股份有限公司 | Web camera and remote Ethernet Transmission system, storage system |
| CN109194492A (en) * | 2018-06-27 | 2019-01-11 | 华为技术有限公司 | A kind of powered device PD and Power over Ethernet POE system |
| CN109379196A (en) * | 2018-10-15 | 2019-02-22 | 普联技术有限公司 | Network interface POE power supply circuit, power supply circuit, monitoring system and method for supplying power to |
| CN208862867U (en) * | 2018-10-15 | 2019-05-14 | 广东优力普物联科技有限公司 | A kind of POE interchanger of Width funtion input |
| CN110113174A (en) * | 2019-03-28 | 2019-08-09 | 普联技术有限公司 | A kind of power over Ethernet device |
-
2019
- 2019-10-14 CN CN201910971164.1A patent/CN110658408B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664741A (en) * | 2012-04-12 | 2012-09-12 | 上海芯域微电子有限公司 | Method and device of power over Ethernet |
| CN102692967A (en) * | 2012-05-14 | 2012-09-26 | 江苏中科梦兰电子科技有限公司 | Computer mainboard circuit capable of supporting various power adapters |
| CN102761422A (en) * | 2012-07-27 | 2012-10-31 | 深圳市东微智能科技有限公司 | Cascaded Ethernet power supply system and Ethernet power supply method thereof |
| EP2770664A1 (en) * | 2012-12-28 | 2014-08-27 | Huawei Technologies Co., Ltd. | Ethernet power supply method, apparatus, device and system |
| US20140359320A1 (en) * | 2012-12-28 | 2014-12-04 | Huawei Technologies Co., Ltd. | Power over ethernet method, apparatus, device, and system |
| CN103825749A (en) * | 2014-02-28 | 2014-05-28 | 北京腾控科技有限公司 | Cascaded synchronous large-scale data collecting system based on network and distributed type power supply |
| CN204291007U (en) * | 2014-11-05 | 2015-04-22 | 国网山东省电力公司青岛供电公司 | A kind of electric power system Power over Ethernet device |
| CN205265731U (en) * | 2015-12-16 | 2016-05-25 | 深圳市世纪本原科技股份有限公司 | Ethernet power supply switch |
| CN107819589A (en) * | 2016-09-12 | 2018-03-20 | 中兴通讯股份有限公司 | POE system and method |
| CN107357193A (en) * | 2017-01-17 | 2017-11-17 | 国电南瑞科技股份有限公司 | A kind of method for realizing intelligent substation automatic safety device test system |
| CN107342871A (en) * | 2017-07-05 | 2017-11-10 | 广州市金宏骏科技工程有限公司 | A kind of POE electric supply installations and method |
| CN107846286A (en) * | 2017-10-19 | 2018-03-27 | 浙江大华技术股份有限公司 | It is a kind of for the electric supply installation of cascade, method of supplying power to and cascade electric power system |
| CN108173342A (en) * | 2017-11-22 | 2018-06-15 | 兰州海红技术股份有限公司 | The communication of adaptive voltage grade and powering mode monitors system with direct current power supply and distribution |
| CN208158608U (en) * | 2017-11-24 | 2018-11-27 | 浙江大华技术股份有限公司 | A kind of cascade power supply unit of double network interfaces |
| CN208337692U (en) * | 2018-04-25 | 2019-01-04 | 杭州海康威视数字技术股份有限公司 | Web camera and remote Ethernet Transmission system, storage system |
| CN109194492A (en) * | 2018-06-27 | 2019-01-11 | 华为技术有限公司 | A kind of powered device PD and Power over Ethernet POE system |
| CN109379196A (en) * | 2018-10-15 | 2019-02-22 | 普联技术有限公司 | Network interface POE power supply circuit, power supply circuit, monitoring system and method for supplying power to |
| CN208862867U (en) * | 2018-10-15 | 2019-05-14 | 广东优力普物联科技有限公司 | A kind of POE interchanger of Width funtion input |
| CN109088478A (en) * | 2018-10-17 | 2018-12-25 | 江苏久创电气科技有限公司 | A kind of distribution transformer remote terminal unit |
| CN110113174A (en) * | 2019-03-28 | 2019-08-09 | 普联技术有限公司 | A kind of power over Ethernet device |
Non-Patent Citations (3)
| Title |
|---|
| MINGMING LIU: "Power supply solutions and trends analysis for Small Cell mobile communication base station", 《2018 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC)》 * |
| N.F. COSTA: "Ethernet based monitoring and supervision of telecommunications power supplyunits", 《 THE 25TH INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE, 2003. INTELEC "03》 * |
| 丁倩雯: "基于POE技术的物联网终端电源接口模块设计", 《电脑知识与技术》 * |
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