CN110174560B - Relay protection device state variable testing method - Google Patents
Relay protection device state variable testing method Download PDFInfo
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- CN110174560B CN110174560B CN201910272993.0A CN201910272993A CN110174560B CN 110174560 B CN110174560 B CN 110174560B CN 201910272993 A CN201910272993 A CN 201910272993A CN 110174560 B CN110174560 B CN 110174560B
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Abstract
The invention discloses a relay protection device state variable testing method, which comprises the following steps: s1, designing a wiring schematic diagram for protection function test, forming a spare power automatic switching inter-phase charging protection test platform by 1 spare power automatic switching device, 1 comprehensive protection measurement and control device and 2 relay protection test systems, then wiring by the wiring schematic diagram, detecting a circuit, and starting equipment after confirming that the wiring is correct; and S2, respectively configuring parameters of the spare power automatic switching device and the comprehensive protection measurement and control device, wherein the parameter configuration of the spare power automatic switching device is set according to the spare power automatic switching of the bridge. The invention simulates the transient state or instantaneous fault of the reproduction system through the relay protection tester, thereby achieving the purpose of testing the system function of the protection device, being convenient for displaying the internal information of the system, being convenient for the client to visually observe, reducing the time for the client to check and accept the product, and improving the quality and efficiency of the product check and acceptance.
Description
Technical Field
The invention relates to the technical field of relay protection device testing, in particular to a relay protection device state variable testing method.
Background
With the rapid development of power systems, the scale of power grids is getting bigger and bigger, the network structure of the power systems is more complicated, and it is important to improve the safe operation level of the power systems. The relay protection is an important device for ensuring the safe and reliable operation of the power system, and can detect the fault and abnormal condition of the power system so as to send out an alarm signal or directly isolate and remove the fault part. Therefore, the action correctness of the protection device directly influences the safe and stable operation of the whole system, and accidents can be caused by carelessness. Therefore, the relay protection device must be strictly tested, and complete functions and reliable performance of the relay protection device are ensured.
For the function check of the relay protection device, the traditional test method is to utilize a relay protection tester to independently output current and voltage analog quantities with different amplitudes and phase angles, or collect switching value input for measuring action time, and for fault simulation and transmission tests related to voltage and current, the test can be completed by directly matching a voltage loop and a current loop with a circuit breaker. However, for functions such as reclosing interphase acceleration protection and backup power automatic switching interphase charging protection, due to the fact that the functions need to be matched with system states, multiple states are switched, the traditional method is difficult to achieve, and in many cases, when a user conducts product inspection on site, the functions need to be tested definitely, and therefore a relay protection device state variable testing method is provided to solve the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a relay protection device state variable testing method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a relay protection device state variable testing method comprises the following steps:
s1, designing a wiring schematic diagram for protection function test, forming a spare power automatic switching inter-phase charging protection test platform by 1 spare power automatic switching device, 1 comprehensive protection measurement and control device and 2 relay protection test systems, then wiring by the wiring schematic diagram, detecting a circuit, and starting equipment after confirming that the wiring is correct;
s2, parameter configuration is respectively carried out on the spare power automatic switching device and the comprehensive protection measurement and control device, the parameter configuration of the spare power automatic switching device is set according to the spare power automatic switching of the bridge, and the parameter configuration of the comprehensive protection measurement and control device is configured according to three functions of overcurrent protection, accelerated circuit protection and charging protection;
s3, respectively carrying out state variable design on the relay protection test system 1 and the relay protection test system 2:
designing state variables of the relay protection test system 1, and dividing the backup power automatic switching inter-phase charging protection test into 6 states for testing;
state 1: simulating that the spare power automatic switching device is in a normal switching-on operation state with the pressure of the two sections of inlet wires, and not starting the spare power automatic switching at the moment so that the spare power automatic switching bus-bar switch is switched off;
state 2: the voltage loss of the spare power automatic switching device in a first section of incoming line switching-on state is simulated, the second section of the spare power automatic switching device is in a normal operation state, at the moment, the spare power automatic switching device is not started, and the spare power automatic switching device bus-bar switch is still in switching-off state;
state 3: the voltage loss of the spare power automatic switching device in the first section of inlet wire switching-off state and the normal operation state of the second section are simulated, and at the moment, the spare power automatic switching is still not started because the delay time interval is not up, so that the spare power automatic switching bus coupler switch is still in switching-off state;
and 4: simulating that the spare power automatic switching device is in a closing state of the bus coupler switch, wherein at the moment, the first section of incoming line is in voltage loss, and the second section of incoming line normally runs;
and state 5: simulating the switching-on state of the automatic bus transfer equipment, and judging and starting the inter-phase charging protection by the comprehensive protection measurement and control device;
and 6: simulating the system state of the comprehensive protection measurement and control device after starting the inter-phase charging protection to visually display the actual operation effect on the current site, so that the spare power automatic switching device is in a brake-off state, the line protection device is in brake-off operation, and the fault current can be continuously existed or removed;
the state variable of the relay protection testing system 2 is used for testing the relay time of an interphase charging protection accelerated tripping outlet, and the corresponding timing mode is used for directly measuring and calculating the time difference from the closing of a closing contact to the closing of an opening contact of the comprehensive protection measurement and control device;
and S4, online debugging the relay protection test system and the spare power automatic switching device, observing the spare power automatic switching inter-phase acceleration protection test result, and finishing the spare power automatic switching inter-phase charging protection function when the test result is displayed according to the sequence of action 1, action 2 and action 3.
Preferably, the spare power automatic switching device is connected with the comprehensive protection measurement and control device through an inter-cabinet line.
Preferably, the first mother three-phase voltage acquisition and the second mother three-phase voltage acquisition of the spare power automatic switching device are connected in parallel.
Preferably, the bridge spare power automatic switching setting method comprises protection switching or quitting and fixed value setting;
the protection input and exit setting comprises adjusting a pressure plate to be in an input state or an exit state, inputting bridge spare power automatic input, and exiting the rest of protection;
the setting of the fixed value comprises the steps of setting the detected voltage fixed value to be 10.0V, setting the detected voltage fixed value to be 3.0V, and setting the second time fixed value of the bridge spare power automatic switching: 5.00S, and the other fixed values are not required to be set.
6. Preferably, the parameter configuration of the comprehensive protection measurement and control device comprises protection input or exit and fixed value setting;
the protection input or exit setting comprises adjusting a pressure plate to be in an input or exit state, inputting three sections of overcurrent protection, circuit acceleration protection and charging protection, and exiting the rest of the protection;
the setting of the fixed value comprises the steps of putting a current quick-break protection into 1, selecting a pure overcurrent mode, setting the fixed value to be 1.00A, setting the current quick-break protection delay to be 5.99S, setting the acceleration memory time after the inter-phase acceleration protection to be 3S, setting an inter-phase acceleration protection control word to be 1, setting the inter-phase acceleration current fixed value to be 1.00A, setting the inter-phase acceleration delay fixed value to be 0.00S, setting the automatic exit time limit of the charging protection to be 3.00S, setting the input or exit of the charging protection to be 1, setting the current fixed value to be 1.00A, and setting none of the other fixed values.
Preferably, the power supplies of the spare power automatic switching device and the comprehensive protection measurement and control device are both AC220V, and the operation power supply is taken from the DC220V output of the relay protection test system.
Preferably, the fault judgment of the comprehensive protection measurement and control device is realized through overcurrent, and the current uses the phase A current taken from the relay protection test system 1.
Preferably, the timing mode uses the relay protection test system 2 for timing.
In the invention, when in use, a wiring schematic diagram for a protection function test is designed, a spare power automatic switching device interphase charging protection test platform is formed by 1 spare power automatic switching device, 1 comprehensive protection measurement and control device and 2 series relay protection test systems, then wiring is carried out through the wiring schematic diagram, the spare power automatic switching device and the comprehensive protection device are connected through an inter-cabinet wire, the synchronous position acquisition of the switching value of a spare power automatic switching device bus-bar switch and the comprehensive protection device is convenient, and the switching-on and switching-off command is issued, when a control device sends out corresponding signals, the spare power automatic switching device C1 is connected with the positive electrode of a power supply, so that the output 1 of the relay protection test system 1 is the bus-in 1 position of the spare power automatic switching device, the spare power automatic switching device C3 is connected with the positive electrode of the power supply, the output 2 of the relay protection test system 1 is the bus-bar combined position of the spare power automatic switching device, the comprehensive protection device, the output 3 of the relay protection test system 1 is a combined position of a comprehensive protection device and a bus of a spare power automatic switching device, a comprehensive protection measurement and control device C1 is connected with the positive electrode of a power supply, the output 4 of the relay protection test system 1 is a combined position of the comprehensive protection device and the bus of the spare power automatic switching device, a spare power automatic switching device C2 is connected with the positive electrode of the power supply, an incoming line 2 of the spare power automatic switching device is in a combined position, a three-phase voltage acquisition of a bus of the spare power automatic switching device I is connected with a three-phase voltage acquisition of a bus of a spare power automatic switching device II in parallel, a tripping outlet B14 of the spare power automatic switching device is connected with a tripping inlet B7 of the comprehensive protection device, a closing outlet B16 of the spare power automatic switching device is connected with a comprehensive protection device B16, a common end B13 and a B15 of the spare power automatic switching device are connected with the comprehensive protection device B11 after short circuit, a comprehensive protection device B16 is connected with the, parameter configuration is respectively carried out on the spare power automatic switching device and the comprehensive protection measurement and control device, and the parameter configuration of the spare power automatic switching device comprises protection switching or quitting and fixed value setting according to the setting of the spare power automatic switching device of the bridge; the protection input and exit setting comprises adjusting a pressure plate to be in an input state or an exit state, inputting bridge spare power automatic input, and exiting the rest of protection; the setting of the fixed value comprises the steps of setting the detected voltage fixed value to be 10.0V, setting the detected voltage fixed value to be 3.0V, and setting the second time fixed value of the bridge spare power automatic switching: 5.00S, the other fixed values do not need to be set; the parameter configuration of the comprehensive protection measurement and control device comprises protection input or exit and fixed value setting; the protection input or exit setting comprises adjusting a pressure plate to be in an input or exit state, inputting three sections of overcurrent protection, circuit acceleration protection and charging protection, and exiting the rest of the protection; the setting of the fixed value comprises the steps of putting a current quick-break protection into 1, selecting a pure overcurrent mode, setting the fixed value to be 1.00A, setting the current quick-break protection delay to be 5.99S, setting the acceleration memory time after the inter-phase acceleration protection to be 3S, setting an inter-phase acceleration protection control word to be 1, setting the inter-phase acceleration current fixed value to be 1.00A, setting the inter-phase acceleration delay fixed value to be 0.00S, setting the automatic exit time limit of the charging protection to be 3.00S, setting the input or exit of the charging protection to be 1, setting the current fixed value to be 1.00A, and setting none of the other fixed values; designing a state variable of a relay protection test system 1, dividing a spare power automatic switching inter-phase charging protection test into 6 states for testing, directly measuring and calculating the time difference from closing of a closing contact to closing of an opening contact of a comprehensive protection measurement and control device by using a corresponding timing mode, timing by using the relay protection test system 2, starting timing when the device is closed, ending timing when the device is opened, calculating the interval of two time points to obtain the accelerated tripping time of the inter-phase charging protection, judging the time of the charging protection outlet and the overcurrent protection time, debugging the relay protection test system and the spare power automatic switching device on line, and displaying 00:29:08 spare power automatic switching charging completion and 00:29:16 spare power automatic switching success on a spare power automatic switching device interface in sequence when test results are displayed on the spare power automatic switching device interface, And displaying three actions of 00:29:25 interphase charging protection on the interface of the comprehensive protection device, and finishing the function of the interphase charging protection of the backup power automatic switching.
Drawings
Fig. 1 is a circuit wiring diagram of a relay protection device state variable testing method according to the present invention;
fig. 2 is a schematic structural diagram of an ZKD-3001 comprehensive protection measurement and control device of a relay protection device state variable testing method provided by the invention;
fig. 3 is a schematic structural diagram of an ZKD-3011 backup power automatic switching device of a relay protection device state variable testing method according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a method for testing state variables of a relay protection device includes the following steps:
s1, designing a wiring schematic diagram for protection function test, forming a spare power automatic switching interphase charging protection test platform by 1 spare power automatic switching device, 1 comprehensive protection measurement and control device and 2 relay protection test systems, wherein the spare power automatic switching device adopts a model ZKD-3011, the ZKD-3011 spare power automatic switching device is used for realizing normal operation states of two sections of incoming wires, the voltage loss of the incoming wire of the I section and the normal operation state of the II section are simulated, the closing state of the spare power automatic switching device is simulated in three states, the comprehensive protection measurement and control device adopts a model ZKD-3001, the ZKD-3001 comprehensive protection measurement and control device is used for realizing the closing state of the spare power automatic switching device, namely, the overcurrent fault under the closing operation of the line protection device and starting interphase charging protection, the 2 relay protection test systems all adopt ONLLY series, the ONLLY series relay protection test system 1 is used for simulating the matching time sequence of switching value and analog value to realize the state change of, the ONLLY series relay protection test system 2 is used for testing the time of an interphase charging protection accelerated tripping outlet relay, then carrying out wiring through a wiring schematic diagram, then detecting a line, and starting equipment after confirming that the wiring is correct;
s2, parameter configuration is respectively carried out on the spare power automatic switching device and the comprehensive protection measurement and control device, the parameter configuration of the spare power automatic switching device is set according to the spare power automatic switching of the bridge, and the setting method of the spare power automatic switching of the relay protection test system bridge comprises protection switching-in or quitting and fixed value setting;
the protection input or exit setting comprises adjusting the pressure plate to an input or exit state, inputting the bridge spare power automatic input, and exiting the rest of the protection;
the setting of the fixed value comprises the steps of setting the detected voltage fixed value to be 10.0V, setting the detected voltage fixed value to be 3.0V, and setting the second time fixed value of the bridge spare power automatic switching: 5.00S, the other fixed values do not need to be set;
the parameter configuration of the comprehensive protection measurement and control device is configured according to three functions of overcurrent protection, accelerated circuit protection and charging protection, and the parameter configuration of the comprehensive protection measurement and control device of the relay protection test system comprises protection input or exit and fixed value setting;
the protection input or exit setting comprises adjusting a pressure plate to be in an input or exit state, inputting three sections of overcurrent protection, circuit acceleration protection and charging protection, and exiting the rest of the protection;
the setting of the fixed value comprises the steps of putting a current quick-break protection into 1, selecting a pure overcurrent mode, setting the fixed value to be 1.00A, setting the current quick-break protection delay to be 5.99S, setting the acceleration memory time after the inter-phase acceleration protection to be 3S, setting an inter-phase acceleration protection control word to be 1, setting the inter-phase acceleration current fixed value to be 1.00A, setting the inter-phase acceleration delay fixed value to be 0.00S, setting the automatic exit time limit of the charging protection to be 3.00S, setting the input or exit of the charging protection to be 1, setting the current fixed value to be 1.00A, and setting none of the other fixed values;
s3, respectively carrying out state variable design on the relay protection test system 1 and the relay protection test system 2:
designing state variables of the relay protection test system 1, and dividing the backup power automatic switching inter-phase charging protection test into 6 states for testing;
state 1: simulating that the spare power automatic switching device is in a normal switching-on operation state with pressure of two sections of inlet wires, and not starting the spare power automatic switching at the moment, so that the spare power automatic switching bus-bar switch is switched off, specifically, the switching-off setting contact 1 is switched on without time delay, the contact 2 is switched off without time delay, the contact 3 is switched off without time delay, the contact 4 is switched on without time delay, the state lasts for 20 seconds and then is finished, and the micro-switch-off switch is in a closed state;
state 2: simulating the voltage loss of the automatic backup power switching device in a first section incoming line switching-on state, and a second section normal operation state, and at the moment, not starting the automatic backup power switching, so that the automatic backup power switching bus-bar switch is still in a switching-off state, specifically, the automatic backup power switching bus-bar switch is switched on and off by setting a contact 1 without delay, a contact 2 without delay, a contact 3 without delay, a contact 4 without delay, and a state is ended after lasting for 3 seconds, and the micro-break switch is switched off in a 3S time interval;
state 3: simulating the voltage loss of the automatic backup power switching device in a first section of inlet wire switching-off state and a second section of normal operation state, wherein at the moment, the automatic backup power switching device is still not started due to the fact that the delay time interval is not reached, so that the automatic backup power switching device bus-bar switch is still in the switching-off state, specifically, the connection point 1 is set to be opened without delay, the connection point 2 is opened without delay, the connection point 3 is opened without delay, the connection point 4 is closed without delay, the state lasts for 1S and then is ended, and the micro-disconnection switch is in the disconnection state;
and 4: simulating that the spare power automatic switching device is in a closing state of a bus coupler switch, wherein at the moment, the first section of incoming line is in voltage loss, and the second section of incoming line normally runs, and specifically, the method is characterized in that a contact 1 is set to be opened without delay, a contact 2 is closed without delay, a contact 3 is closed without delay, a contact 4 is opened without delay, the state lasts for 3 seconds and then is finished, and a micro-break switch is in an open state;
and state 5: simulating the closing state of the automatic bus transfer device, and judging and starting the inter-phase charging protection by the comprehensive protection measurement and control device at the moment, wherein the specific steps are that the contact 1 is set to be opened and disconnected without time delay, the contact 2 is closed without time delay, the contact 3 is closed without time delay, the contact 4 is opened without time delay, the state lasts for 2S, and the micro-disconnection switch is in the disconnection state in the process;
and 6: simulating a system state of the comprehensive protection measurement and control device after starting the inter-phase charging protection to visually display the current on-site actual operation effect, enabling the spare power automatic switching device to be in a switching-off state, enabling the line protection device to operate in a switching-off mode, and enabling fault current to continuously exist or be relieved, wherein the specific embodiment is that a set contact 1 is opened without delay, a contact 2 is opened without delay, a contact 3 is opened without delay, a contact 4 is closed without delay, and after the state lasts for 8 seconds, a micro-switch is closed;
the state variable of the relay protection testing system 2 is used for testing the relay time of an interphase charging protection accelerated tripping outlet, the corresponding timing mode is used for directly measuring and calculating the time difference from closing of a closing contact to closing of an opening contact of the comprehensive protection measuring and control device, and the relay protection testing system 2 is used for timing when the corresponding timing mode is used;
and S4, online debugging the relay protection test system and the spare power automatic switching device, observing a spare power automatic switching inter-phase acceleration protection test result, and displaying the test result in sequence according to action 1, action 2 and action 3 to finish the spare power automatic switching inter-phase charging protection function, wherein the action 1 is to display that the spare power automatic switching is finished at a 00:29:08 ratio on a spare power automatic switching device interface, the action 2 is to display that the spare power automatic switching is successful at a 00:29:16 ratio on the spare power automatic switching device interface, and the action 3 is to display that the spare power automatic switching is protected at a 00:29:25 ratio on a comprehensive protection device interface.
In the invention, when in use, a wiring schematic diagram for a protection function test is designed, a spare power automatic switching device interphase charging protection test platform is formed by 1 spare power automatic switching device, 1 comprehensive protection measurement and control device and 2 series relay protection test systems, then wiring is carried out through the wiring schematic diagram, the spare power automatic switching device and the comprehensive protection device are connected through an inter-cabinet wire, the synchronous position acquisition of the switching value of a spare power automatic switching device bus-bar switch and the comprehensive protection device is convenient, and the switching-on and switching-off command is issued, when a control device sends out corresponding signals, the spare power automatic switching device C1 is connected with the positive electrode of a power supply, so that the output 1 of the relay protection test system 1 is the bus-in 1 position of the spare power automatic switching device, the spare power automatic switching device C3 is connected with the positive electrode of the power supply, the output 2 of the relay protection test system 1 is the bus-bar combined position of the spare power automatic switching device, the comprehensive protection device, the output 3 of the relay protection test system 1 is a combined position of a comprehensive protection device and a bus of a spare power automatic switching device, a comprehensive protection measurement and control device C1 is connected with the positive electrode of a power supply, the output 4 of the relay protection test system 1 is a combined position of the comprehensive protection device and the bus of the spare power automatic switching device, a spare power automatic switching device C2 is connected with the positive electrode of the power supply, an incoming line 2 of the spare power automatic switching device is in a combined position, a three-phase voltage acquisition of a bus of the spare power automatic switching device I is connected with a three-phase voltage acquisition of a bus of a spare power automatic switching device II in parallel, a tripping outlet B14 of the spare power automatic switching device is connected with a tripping inlet B7 of the comprehensive protection device, a closing outlet B16 of the spare power automatic switching device is connected with a comprehensive protection device B16, a common end B13 and a B15 of the spare power automatic switching device are connected with the comprehensive protection device B11 after short circuit, a comprehensive protection device B16 is connected with the, parameter configuration is respectively carried out on the spare power automatic switching device and the comprehensive protection measurement and control device, and the parameter configuration of the spare power automatic switching device comprises protection switching or quitting and fixed value setting according to the setting of the spare power automatic switching device of the bridge; the protection input and exit setting comprises adjusting a pressure plate to be in an input state or an exit state, inputting bridge spare power automatic input, and exiting the rest of protection; the setting of the fixed value comprises the steps of setting the detected voltage fixed value to be 10.0V, setting the detected voltage fixed value to be 3.0V, and setting the second time fixed value of the bridge spare power automatic switching: 5.00S, the other fixed values do not need to be set; the parameter configuration of the comprehensive protection measurement and control device comprises protection input or exit and fixed value setting; the protection input or exit setting comprises adjusting a pressure plate to be in an input or exit state, inputting three sections of overcurrent protection, circuit acceleration protection and charging protection, and exiting the rest of the protection; the setting of the fixed value comprises the steps of putting a current quick-break protection into 1, selecting a pure overcurrent mode, setting the fixed value to be 1.00A, setting the current quick-break protection delay to be 5.99S, setting the acceleration memory time after the inter-phase acceleration protection to be 3S, setting an inter-phase acceleration protection control word to be 1, setting the inter-phase acceleration current fixed value to be 1.00A, setting the inter-phase acceleration delay fixed value to be 0.00S, setting the automatic exit time limit of the charging protection to be 3.00S, setting the input or exit of the charging protection to be 1, setting the current fixed value to be 1.00A, and setting none of the other fixed values; designing a state variable of a relay protection test system 1, dividing a spare power automatic switching inter-phase charging protection test into 6 states for testing, directly measuring and calculating the time difference from closing of a closing contact to closing of an opening contact of a comprehensive protection measurement and control device by using a corresponding timing mode, timing by using the relay protection test system 2, starting timing when the device is closed, ending timing when the device is opened, calculating the interval of two time points to obtain the accelerated tripping time of the inter-phase charging protection, judging the time of the charging protection outlet and the overcurrent protection time, debugging the relay protection test system and the spare power automatic switching device on line, and displaying 00:29:08 spare power automatic switching charging completion and 00:29:16 spare power automatic switching success on a spare power automatic switching device interface in sequence when test results are displayed on the spare power automatic switching device interface, And displaying three actions of 00:29:25 interphase charging protection on the interface of the comprehensive protection device, and finishing the function of the interphase charging protection of the backup power automatic switching.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
1. A relay protection device state variable testing method is characterized by comprising the following steps:
s1, designing a wiring schematic diagram for protection function test, forming a spare power automatic switching inter-phase charging protection test platform by 1 spare power automatic switching device, 1 comprehensive protection measurement and control device and 2 relay protection test systems, then wiring by the wiring schematic diagram, detecting a circuit, and starting equipment after confirming that the wiring is correct;
s2, parameter configuration is respectively carried out on the spare power automatic switching device and the comprehensive protection measurement and control device, the parameter configuration of the spare power automatic switching device is set according to the spare power automatic switching of the bridge, and the parameter configuration of the comprehensive protection measurement and control device is configured according to three functions of overcurrent protection, accelerated circuit protection and charging protection;
s3, respectively carrying out state variable design on the relay protection test system 1 and the relay protection test system 2:
designing state variables of the relay protection test system 1, and dividing the backup power automatic switching inter-phase charging protection test into 6 states for testing;
state 1: simulating that the spare power automatic switching device is in a normal switching-on operation state with the pressure of the two sections of inlet wires, and not starting the spare power automatic switching at the moment so that the spare power automatic switching bus-bar switch is switched off;
state 2: the voltage loss of the spare power automatic switching device in a first section of incoming line switching-on state is simulated, the second section of the spare power automatic switching device is in a normal operation state, at the moment, the spare power automatic switching device is not started, and the spare power automatic switching device bus-bar switch is still in switching-off state;
state 3: the voltage loss of the spare power automatic switching device in the first section of inlet wire switching-off state and the normal operation state of the second section are simulated, and at the moment, the spare power automatic switching is still not started because the delay time interval is not up, so that the spare power automatic switching bus coupler switch is still in switching-off state;
and 4: simulating that the spare power automatic switching device is in a closing state of the bus coupler switch, wherein at the moment, the first section of incoming line is in voltage loss, and the second section of incoming line normally runs;
and state 5: simulating the switching-on state of the automatic bus transfer equipment, and judging and starting the inter-phase charging protection by the comprehensive protection measurement and control device;
and 6: simulating the system state of the comprehensive protection measurement and control device after starting the inter-phase charging protection to visually display the actual operation effect on the current site, so that the spare power automatic switching device is in a brake-off state, the line protection device is in brake-off operation, and the fault current is continuously existed or removed;
the state variable of the relay protection testing system 2 is used for testing the relay time of an interphase charging protection accelerated tripping outlet, and the corresponding timing mode is used for directly measuring and calculating the time difference from the closing of a closing contact to the closing of an opening contact of the comprehensive protection measurement and control device;
and S4, online debugging the relay protection test system and the spare power automatic switching device, observing the spare power automatic switching inter-phase acceleration protection test result, and finishing the spare power automatic switching inter-phase charging protection function when the test result is displayed according to the sequence of action 1, action 2 and action 3.
2. The relay protection device state variable testing method according to claim 1, wherein the backup power automatic switching device and the integrated protection measurement and control device are connected by an inter-cabinet line.
3. The relay protection device state variable testing method according to claim 1, wherein a first mother three-phase voltage collection and a second mother three-phase voltage collection of the backup power automatic switching device are connected in parallel.
4. The relay protection device state variable testing method according to claim 1, wherein the bridge backup power automatic switching setting method comprises protection switching or quitting and fixed value setting;
the protection input or exit setting comprises adjusting the pressure plate to an input or exit state, inputting the bridge spare power automatic input, and exiting the rest of the protection;
the setting of the fixed value comprises the steps of setting the detected voltage fixed value to be 10.0V, setting the detected voltage fixed value to be 3.0V, and setting the second time fixed value of the bridge spare power automatic switching: 5.00S, and the other fixed values are not required to be set.
5. The relay protection device state variable testing method according to claim 1, wherein the parameter configuration of the integrated protection measurement and control device comprises protection input or exit and fixed value setting;
the protection input or exit setting comprises adjusting a pressure plate to be in an input or exit state, inputting three sections of overcurrent protection, circuit acceleration protection and charging protection, and exiting the rest of the protection;
the setting of the fixed value comprises the steps of putting a current quick-break protection into 1, selecting a pure overcurrent mode, setting the fixed value to be 1.00A, setting the current quick-break protection delay to be 5.99S, setting the acceleration memory time after the inter-phase acceleration protection to be 3S, setting an inter-phase acceleration protection control word to be 1, setting the inter-phase acceleration current fixed value to be 1.00A, setting the inter-phase acceleration delay fixed value to be 0.00S, setting the automatic exit time limit of the charging protection to be 3.00S, setting the input or exit of the charging protection to be 1, setting the current fixed value to be 1.00A, and setting none of the other fixed values.
6. The method for testing the state variable of the relay protection device according to claim 1, wherein the power supplies of the backup power automatic switching device and the integrated protection measurement and control device are both AC220V, and the operation power supply is taken from the DC220V output of the relay protection test system.
7. A relay protection device state variable testing method according to claim 1, characterized in that the fault judgment of the integrated protection measurement and control device is realized by overcurrent, and the current is the a-phase current taken from the relay protection testing system 1.
8. A relay protection device state variable testing method according to claim 1, characterized in that the timing mode uses the relay protection testing system 2 for timing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910272993.0A CN110174560B (en) | 2019-04-04 | 2019-04-04 | Relay protection device state variable testing method |
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| CN201910272993.0A CN110174560B (en) | 2019-04-04 | 2019-04-04 | Relay protection device state variable testing method |
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| CN111693804A (en) * | 2020-05-27 | 2020-09-22 | 广州市扬新技术研究有限责任公司 | Method for realizing reclosing test function of direct current relay protection tester based on FPGA |
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