CN217443498U - Integrated test system of direct current isolator for energy storage - Google Patents
Integrated test system of direct current isolator for energy storage Download PDFInfo
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Abstract
The utility model provides an energy storage DC isolating switch integrated test system, which comprises a power supply subsystem, a current detection subsystem and a control subsystem; the power supply subsystem comprises a storage battery pack, a first power supply switch power supply and a second power supply switch power supply, wherein the input ends of the first power supply switch power supply and the second power supply switch power supply are connected with the output end of the storage battery pack, and the output end of the second power supply switch power supply is provided with a UPS power supply. The utility model has simple structure, easy construction and use, can be suitable for the test of multiple functions of the DC isolating switch, can carry out the performance test on the DC isolating switches with different control voltage grades, fully verifies the performance states of the DC isolating switch under different conditions, has high test efficiency and good test effect; meanwhile, the test system can also test a plurality of groups of direct current isolating switches, and is favorable for further improving the test and inspection efficiency of the direct current isolating switches.
Description
Technical Field
The utility model belongs to direct current isolator tests the field, especially relates to a direct current isolator integrated test system for energy storage.
Background
The direct current isolating switch plays a key role in an energy storage system, when an electric storage system is abnormal or a network side is abnormal, the direct current isolating switch needs to be switched on and off through a controller, and the like, so that the damage of the whole system caused by the fault of the direct current isolating switch is avoided, and the test of the direct current isolating switch is particularly important. However, in a common inspection and test method, different tools need to be built for different direct-current isolating switches, and the problems of complicated test, low test efficiency and the like exist; the existing test system is generally complex in structure and poor in reliability, different test tools need to be built, and the test is complicated; especially, different test loops need to be set up according to the difference of the current size, the control voltage and the like of the direct-current isolating switch, so that the operation is complex, and the direct-current isolating switch is low in test efficiency.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a dc isolation switch integrated test system for energy storage to solve the problem that dc isolation switch efficiency of software testing is low.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a DC isolating switch integrated test system for energy storage comprises a power supply subsystem, a current detection subsystem and a control subsystem;
the power supply subsystem comprises a storage battery pack, a first power supply switch power supply and a second power supply switch power supply, wherein the input ends of the first power supply switch power supply and the second power supply switch power supply are connected with the output end of the storage battery pack, and the output end of the second power supply switch power supply is provided with a UPS (uninterrupted power supply); the output end of the storage battery pack is provided with at least two tested direct current isolating switch connecting positions, the voltage input end of the tested direct current isolating switch is connected with the output end of the storage battery pack through the direct current switch, the voltage output end of the tested direct current isolating switch is connected with the electronic load, and the electronic load and the tested direct current isolating switch are arranged in a one-to-one correspondence manner;
the control subsystem comprises a controller and a display connected with the controller, and power supply ends of the controller and the display are connected with the UPS; the storage battery pack, the tested direct current isolating switch and the direct current switch are all connected with the controller;
the current detection subsystem comprises a current detector connected with the controller, the detection end of the current detector is arranged corresponding to the output end of the detected direct current isolating switch, and the power supply end of the current detector is connected with the output end of the first power supply switch power supply.
Furthermore, the direct current switch, the first power supply switch power supply and the second power supply switch power supply are connected with the output end of the storage battery pack through the protection switch.
Further, the electronic load adopts a direct current electronic load EA-ELR9000 HP.
Furthermore, the voltage input end of the UPS is connected with the output end of the second power supply switch power supply, and the power supply ends of the controller and the display are both connected with the voltage output end of the UPS; and the charging output end of the UPS is provided with an energy storage battery.
Furthermore, a voltage detection end for detecting the voltage condition of the storage battery pack is arranged on the controller, and the output end of the storage battery pack is connected with the voltage detection end of the controller; and the control ends of the DC isolation switch to be tested and the DC switch are connected with the DO output end of the controller.
Furthermore, a DI input end used for receiving the opening and closing state data of the tested direct current isolating switch is arranged on the controller, and the state output end of the tested direct current isolating switch is connected with the DI input end of the controller.
Further, the output end of the current detector is connected with the AI input end of the controller.
Compared with the prior art, the integrated test system of direct current isolator for energy storage have following advantage:
the utility model has simple structure, easy construction and use, can be suitable for testing various functions of the direct current isolating switch, can test the performance of the direct current isolating switch with different control voltage grades, fully verifies the performance states of the direct current isolating switch under different conditions, has high testing efficiency and good testing effect; meanwhile, the test system can also test a plurality of groups of direct current isolating switches, and is favorable for further improving the test and inspection efficiency of the direct current isolating switches.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a block diagram of an integrated testing system of a dc isolation switch for energy storage according to an embodiment of the present invention;
fig. 2 is a schematic circuit structure diagram of a detection subsystem in an integrated test system of a dc isolation switch for energy storage according to an embodiment of the present invention;
fig. 3 is a schematic circuit structure diagram of a power supply subsystem in an integrated test system of a dc isolation switch for energy storage according to an embodiment of the present invention;
fig. 4 is a schematic circuit structure diagram of a control subsystem in a dc isolation switch integrated test system for energy storage according to an embodiment of the present invention.
Description of reference numerals:
1. a battery pack; 2. a DC switch; 3. a direct current isolating switch to be tested; 4. a current detector; 5. an electronic load; 6. a protection switch; 7. a first power supply switching power supply; 8. a second power supply switching power supply; 9. a UPS power supply; 10. an energy storage battery; 11. a display; 12. and a controller.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
An integrated test system of a direct current isolating switch for energy storage is shown in fig. 1 to 4 and comprises a power supply subsystem, a current detection subsystem and a control subsystem;
the power supply subsystem comprises a storage battery pack 1, a first power supply switch power supply 7 and a second power supply switch power supply 8, wherein the input ends of the first power supply switch power supply 7 and the second power supply switch power supply 8 are connected with the output end of the storage battery pack 1, and the output end of the second power supply switch power supply 8 is provided with a UPS (uninterrupted power supply) 9; the output end of the storage battery pack 1 is provided with at least two connecting positions of the tested direct current isolation switches 3, the voltage input ends of the tested direct current isolation switches 3 are connected with the output end of the storage battery pack 1 through the direct current switches 2, the voltage output ends of the tested direct current isolation switches 3 are connected with the electronic loads 5, and the electronic loads 5 are arranged in one-to-one correspondence with the tested direct current isolation switches 3.
The integrated test system is simple in structure, easy to build and use, suitable for testing various functions of the direct-current isolating switch, capable of testing the performance of the direct-current isolating switch with different control voltage levels, capable of fully verifying the performance state of the direct-current isolating switch under different conditions, high in test efficiency and good in test effect; meanwhile, the test system can also test a plurality of groups of direct current isolating switches, and is favorable for further improving the test and inspection efficiency of the direct current isolating switches.
Optionally, the first power supply switching power supply 7 and the second power supply switching power supply 8 may both adopt a direct current switching power supply, and the direct current switching power supply may convert a high voltage of the storage battery pack 1 into a low voltage, so as to realize power supply to the controller 12, the display 11 and other devices, and have better stability, which is beneficial to improving the reliability of the test system during operation; through being equipped with two at least direct current isolator 3 hookups that are surveyed at storage battery 1's output, this kind of test system not only can carry out relevant control test to the direct current isolator 3 that are surveyed of different control voltage grades, but also can test a plurality of direct current isolator 3 that are surveyed simultaneously, is favorable to improving the efficiency of software testing of direct current isolator 3 that is surveyed.
The control subsystem comprises a controller 12 and a display 11 connected with the controller 12, and power supply ends of the controller 12 and the display 11 are both connected with the UPS 9; the storage battery pack 1, the direct current isolation switch 3 to be tested and the direct current switch 2 are all connected with the controller 12. The display 11 can adopt the existing PC display, and the PC display can be connected with the controller 12 through a data transmission module, such as a LAN communication module, and can be used to realize the transmission of data between the controller 12 and the display 11, and realize the real-time display of the state of the tested dc isolator 3 and the detection data of the current detector 4 by the display 11, so that the operator can conveniently check the data in time, and the convenience and the detection efficiency of the test of the dc isolator can be improved; the connection and communication between the display 11 and the controller 12 is conventional and will not be described herein.
The current detection subsystem comprises a current detector 4 connected with the controller 12, the detection end of the current detector 4 is arranged corresponding to the output end of the detected direct current isolation switch 3, and the power supply end of the current detector 4 is connected with the output end of the first power supply switch power supply 7.
Optionally, fig. 2 is a schematic structural diagram of a current detection subsystem in an embodiment of the present invention, as shown in the figure, the U1 battery pack 1 may provide electric energy for a main loop of the entire test system, and the KM1, the KM2, and the KMX are all the tested dc isolating switches 3; direct current isolator switches on the electricity back control accessible control energy storage coil and gets electric, carries out mechanical energy storage, and accessible control is combined floodgate or separating brake coil after the energy storage, carries out separating brake or combined floodgate operation, utilizes controller 12 control direct current isolator divide-shut brake to be prior art, and it is not repeated here.
The electronic load 5 may adopt a dc electronic load EA-ELR9000 HP. The direct-current electronic load EA-ELR9000HP is suitable for direct-current isolating switches with different shell frame currents, has strong applicability, can better meet the test of different direct-current isolating switches, and is favorable for improving the applicability and the universality of the test system.
As shown in fig. 2, U2, U2.1, and U2.2 are all electronic loads 5, wherein the electronic loads 5 can set different values according to the current levels of the tested dc isolators 3 with different specifications, so as to meet the testing requirements of the dc isolators with different current specifications. 1KM2,1KM2.1,1KM2.2X are direct current switch 2, can be used to test return circuit protection and control, and direct current switch 2 can adopt NDZ3X-300 type direct current switch, and direct current switch 2's coil indicates the inside control coil of device body, and the closing of direct current switch 2 is realized in the actuation of main contact after the coil received power, utilizes controller 12 control direct current switch 2 divide-shut brake to prior art, and the repeated description is omitted here. The CT1, the CT2 and the CTX are all current detectors 4, and the current detectors 4 can adopt current sensors for detecting the current of the test loop; the AI input of controller 12 can realize the collection to current data through the output of connecting current sensor, and controller 12 can receive current detector 4's current data in real time to show through display 11, make things convenient for the tester to look over, be favorable to improving the convenience that this kind of test system used, accelerate efficiency of software testing.
The direct current switch 2, the first power supply switch power supply 7 and the second power supply switch power supply 8 are connected with the output end of the storage battery pack 1 through the protection switch 6. The protection switch 6 can adopt a miniature circuit breaker, and the protection switch 6 can play a good role in protecting the direct current switch 2, the first power supply switch power supply 7 and the second power supply switch power supply 8, so that the test system is prevented from being damaged; miniature circuit breaker uses a most extensive terminal protection electrical apparatus among the electric terminal distribution device, compares other protectors, and miniature circuit breaker simple structure has easily assembled, has reduced this kind of test system's the degree of difficulty of buildding, is favorable to ensureing this kind of test system safe operation.
Optionally, fig. 3 is a schematic structural diagram of the power supply subsystem in the embodiment of the present invention, as shown in the figure, the storage battery pack 1 can select a 230V power supply voltage, and F1, F2, F3, and F4 are power supply circuit protection switches 6; the V1 is a first power supply switch power supply 7, the V2 is a second power supply switch power supply 8, and the V1 and V2 switch power supplies can convert a 230VAC power supply into 24VDC to supply power for equipment such as a controller 12 and the like; the XP1 and XP2 are 230V power supply terminals, and the battery pack 1 is connected through the protection switch 6 to supply power to a control coil of the 230V tested direct current isolating switch 3; XP3, XP4, XP5 and XP6 are all 24V direct current power supplies and can provide power supplies for equipment such as a control coil of a 24V tested direct current isolating switch 3, a corresponding direct current switch 2 relay and the like, so the test system can carry out related control tests on direct current isolating switches with different control voltage grades (230V and 24V), and has better universality and applicability; the test system can also test the direct current isolating switches of other voltage classes, only the storage battery pack and the corresponding power supply switch power supply need to be replaced, the replacement is simpler and more convenient, and the test efficiency of the direct current isolating switches is favorably improved.
The voltage input end of the UPS 9 is connected with the output end of the second power supply switch power supply 8, and the power supply ends of the controller 12 and the display 11 are both connected with the voltage output end of the UPS 9; and an energy storage battery 10 is arranged at the charging output end of the UPS 9. Through setting up UPS power 9 to be connected UPS power 9 and energy storage battery 10, can avoid the influence to controller 12 after the second power supply switching power supply 8 trouble, ensure operation and storage data that controller 12 can be stable, avoid the test failure, be favorable to improving efficiency of software testing. When the second power supply switch power supply 8 is powered off, the UPS power supply 9 can continue to supply power to the controller 12 and the display 11 through the energy storage battery 10, so as to ensure normal processing and storage of data, and improve the reliability of the test system in the operation process.
Optionally, the UPS power supply 9 may select a 24V power supply, as shown in fig. 3, G1 is a 24VUPS power supply 9, G2 is a 12Ah energy storage battery 10, wherein corresponding X7\ X8 are 24V power supply terminal rows to realize power supply to the controller 12; when the input electricity of the storage battery pack 1 is disconnected, the UPS 9 can continue to supply power to the control subsystem through the battery, so that the normal storage of data is ensured, and the reliability of the test system is improved.
The controller 12 is provided with a DI input end for receiving opening and closing state data of the tested direct current isolating switch 3, a voltage detection end for detecting the voltage condition of the storage battery pack 1 and a DO output end for controlling the opening and closing of the tested direct current isolating switch 3 and the direct current switch 2; the state output end of the tested direct current isolating switch 3 is connected with the DI input end, the output end of the storage battery pack 1 is connected with the voltage detection end, and the control ends of the tested direct current isolating switch 3 and the direct current switch 2 are both connected with the DO output end. The output of the current detector 4 is connected to the AI input of the controller 12.
Optionally, the controller 12 may adopt a CX 5130-time-of-arm controller as a data processing unit, and the DI input terminal may adopt an existing digital input signal module, such as EL1809, to implement data transmission between the state output terminal of the tested dc isolating switch 3 and the controller 12; the DO output end can adopt the existing digital quantity output signal module to realize the control of the DC isolating switch 3 and the DC switch 2 to be tested; the AI input end may adopt an existing analog input signal module, for example, EL3054, to implement data transmission between the current detector 4 and the controller 12, so as to facilitate the controller 12 to process data, and implementing data acquisition and processing on the state output end of the tested dc isolating switch 3 and the current detector 4 by using the controller 12 is prior art and will not be described herein again.
Fig. 4 is a schematic structural diagram of the control subsystem according to the embodiment of the present invention, as shown in the figure, U3 is the controller 12, U4 is the display 11, and the display 11 can be used to check the status information of the voltage, the current, and the dc isolation switch; the X1 terminal row is a DI input end, namely a direct current isolating switch on-off state receiving end, and is used for receiving on-off state data of the detected direct current isolating switch 3, so that the controller 12 can conveniently detect the detected direct current isolating switch 3 in real time; for example, when KM1 is detected to be closed by the dc isolation switch 3, its state output KM1:13/14 contacts are closed, and the controller 12 receives the state output KM1:13/14 contacts closed state data.
The X2 terminal strip is an AI input terminal, i.e. a current data processing terminal, and is used for receiving current detection data of the current detector 4, the controller 12 can receive the current detection data and record the magnitude of the test current, and an operator can check whether the current detection data is consistent with the set current value of the electronic load 5 through the display 11, so that the operator can complete the test of the tested dc isolating switch 3 by using the test system.
The X3 terminal strip is a DO output end, namely a digital output end, and can be used for connecting the DC isolating switch 3 to be tested and the DC switch 2 and controlling the on-off state of the DC isolating switch 3 to be tested and the DC switch 2 to be tested; specifically, the controller 12 can control the states of the relay in the dc isolation switch 3 and the relay in the dc switch 2 to be tested through the DO output terminal, so as to control the switching on/off states of the dc isolation switch and the dc switch 2.
X4: u1, V1 and U1, V2 are voltage detection ends, the voltage detection ends can be provided with voltage sensors, the detection ends of the voltage sensors can be directly connected with the output end of the storage battery pack 1, the output end of the voltage sensors can be connected with the controller 12 through a voltage detection module so as to realize the collection of the voltage data of the storage battery pack 1 by the controller 12, the connection mode of the voltage sensors and the controller 12 is the prior art, and the description is omitted herein; the voltage sensor can detect the voltage condition of the storage battery pack 1 in real time, for example, when the voltage of the storage battery pack 1 is low, the controller 12 can control the disconnection of the direct current switches 2 such as 1KM2 and 1KM2.1, and the circuit connection can be disconnected when the direct current switches 2 are disconnected due to power failure, so that deep discharge of the storage battery pack 1 is avoided. Through setting up voltage detection end and detecting battery voltage, can avoid storage battery 1 degree of depth to discharge and influence its electric life, be favorable to improving storage battery 1's life, and then be favorable to improving holistic life of this kind of test system and test effect, reduce test system's the use degree of difficulty and use cost.
The specific test mode of such a test system can be referred to as follows:
an operator can set an electronic load setting value firstly: setting an electronic load setting value of a direct current electronic load according to tested direct current isolating switches with different current sizes, if a 50A direct current isolating switch is selected for testing, setting the electronic load as a 50A constant load, and setting different current values according to test requirements such as half load, full load, overload and the like by an operator so as to meet the test requirements of the tested direct current isolating switches;
then, a proper power supply can be selected according to the working voltages of different control coils, for example, the switching-on/off coil is controlled to be 230VAC power supply voltage, and the switching-on/off coil can be connected into 230V power supply terminals of XP1 and XP 2; different isolator control coil voltages are different, for example 24VDC or 230VAC, can select to use suitable battery and power supply switch power supply according to actual conditions, and this kind of test system simple structure easily builds, can effectively promote by direct current isolator's test efficiency.
Finally, F1, F2, F3 and F4 protection switches can be closed, the 1KM2 coil contact is controlled to be electrified, and the main contact is closed; related operations can be carried out through remotely controlling the intermediate relays K1, K2 and K3; controlling the K1 to be electrified, and mechanically storing energy by an energy storage motor of the direct-current isolating switch; at the moment, the trigger control closing intermediate relay K2 is electrified, and the direct-current isolating switch performs closing operation; the trigger control switch-on intermediate relay K3 is electrified, and the direct-current isolating switch performs switch-off operation; and according to KM1:13/14 judging the switching-off and switching-on working states of the feedback point; and detecting whether the current of the test loop is consistent with the set current through a CT1 current detector, and completing the test.
The utility model discloses an utilize the controller to carry out real-time voltage detection to storage battery, can realize the controller to the collection of storage battery voltage data, when storage battery voltage is lower, the controller can control direct current switch disconnection, avoids storage battery degree of depth to discharge, is favorable to improving the reliability and the life of this kind of test system, has reduced the use cost of this kind of test system; and through setting up the UPS power in power supply subsystem, even the second power supply switch power takes place the outage in the test procedure, the UPS power also can supply power to control subsystem as stand-by power supply, guarantees that data normal storage has improved the reliability of this kind of test system.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a direct current isolator integrated test system for energy storage which characterized in that: the system comprises a power supply subsystem, a current detection subsystem and a control subsystem;
the power supply subsystem comprises a storage battery pack (1), a first power supply switch power supply (7) and a second power supply switch power supply (8), wherein the input ends of the first power supply switch power supply (7) and the second power supply switch power supply (8) are connected with the output end of the storage battery pack (1), and the output end of the second power supply switch power supply (8) is provided with a UPS (uninterrupted power supply) power supply (9); the output end of the storage battery pack (1) is provided with at least two connection positions of the tested direct current isolating switches (3), the voltage input end of each tested direct current isolating switch (3) is connected with the output end of the storage battery pack (1) through a direct current switch (2), the voltage output end of each tested direct current isolating switch (3) is connected with an electronic load (5), and the electronic loads (5) and the tested direct current isolating switches (3) are arranged in a one-to-one correspondence manner;
the control subsystem comprises a controller (12) and a display (11) connected with the controller (12), and power supply ends of the controller (12) and the display (11) are connected with the UPS (9); the storage battery pack (1), the tested direct current isolating switch (3) and the direct current switch (2) are connected with the controller (12);
the current detection subsystem comprises a current detector (4) connected with a controller (12), the detection end of the current detector (4) corresponds to the output end of the detected direct-current isolating switch (3), and the power supply end of the current detector (4) is connected with the output end of a first power supply switch power supply (7).
2. The integrated test system of the DC isolating switch for energy storage according to claim 1, characterized in that: the direct current switch (2), the first power supply switch power supply (7) and the second power supply switch power supply (8) are connected with the output end of the storage battery pack (1) through the protection switch (6).
3. The direct current isolating switch integrated test system for energy storage according to claim 1, characterized in that: the electronic load (5) adopts a direct-current electronic load EA-ELR9000 HP.
4. The direct current isolating switch integrated test system for energy storage according to claim 1, characterized in that: the voltage input end of the UPS (9) is connected with the output end of the second power supply switch power supply (8), and the power supply ends of the controller (12) and the display (11) are both connected with the voltage output end of the UPS (9); and the charging output end of the UPS (9) is provided with an energy storage battery (10).
5. The direct current isolating switch integrated test system for energy storage according to claim 1, characterized in that: the controller (12) is provided with a voltage detection end for detecting the voltage condition of the storage battery pack (1), and the output end of the storage battery pack (1) is connected with the voltage detection end of the controller (12); and the control ends of the DC isolating switch (3) to be tested and the DC switch (2) are connected with the DO output end of the controller (12).
6. The direct current isolating switch integrated test system for energy storage according to claim 1, characterized in that: the controller (12) is provided with a DI input end used for receiving opening and closing state data of the tested direct current isolating switch (3), and the state output end of the tested direct current isolating switch (3) is connected with the DI input end of the controller (12).
7. The integrated test system of the DC isolating switch for energy storage according to claim 1, characterized in that: the output end of the current detector (4) is connected with the AI input end of the controller (12).
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