CN112821265A - Method and device for automatically shielding and de-shielding signal for overhauling electrical equipment - Google Patents
Method and device for automatically shielding and de-shielding signal for overhauling electrical equipment Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
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Abstract
The invention discloses a method and a device for automatically shielding and removing shielding signals for electrical equipment maintenance, wherein the method for automatically shielding and removing shielding signals for electrical equipment maintenance comprises the following steps: acquiring the position state of ground knives spaced by equipment; acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides; and when the position states of the disconnecting links on the two sides and the current flowing through the disconnecting links on the two sides meet preset conditions, determining to start signal shielding or remove signal shielding according to the position states of the grounding switch. The signal shielding is started or removed through the position state of the ground cutter, when the ground cutter is in the closed position, the signal shielding is started, once the condition that the ground cutter is in the closed position is changed, the dispatching automation system acquires the current position state of the ground cutter according to a ground cutter position state signal uploaded by the ground cutter in real time, the change of the position state of the ground cutter is determined, the signal shielding is removed immediately, and the missed recovery of the monitoring signal after the electric equipment is overhauled is avoided.
Description
Technical Field
The embodiment of the invention relates to the technology of electric equipment maintenance, in particular to a method and a device for automatically shielding and removing shielding of a signal of electric equipment maintenance.
Background
With the increase of power demand and power grid construction speed, social power demand is gradually improved, and the regular inspection work of power grid equipment is also increased day by day. The power grid is continuously increased, signals of a monitoring disc at a dispatching end are more and more, and when equipment is regularly checked and works, a large number of interference signals often exist, and the work of the monitoring disc at the dispatching end is seriously influenced.
At present, a station end shielding or a dispatching end shielding is generally adopted for a power grid, but no matter which method is adopted, the workload is increased, and the risk of missed recovery after the work is finished exists.
Disclosure of Invention
The invention provides a method and a device for automatically shielding and removing shielding of a signal for electrical equipment maintenance, which are used for automatically shielding the signal when the equipment is in a maintenance state and automatically removing the shielding when the equipment is not in the maintenance state.
In a first aspect, an embodiment of the present invention provides an automatic signal shielding and shielding-removing method for electrical equipment maintenance, where the automatic signal shielding and shielding-removing method for electrical equipment maintenance includes:
acquiring the position state of ground knives spaced by equipment;
acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
and when the position states of the two side disconnecting links and the currents flowing through the two side disconnecting links meet preset conditions, determining to start signal shielding or remove signal shielding according to the position states of the grounding switch.
Optionally, the device interval includes: at least one of a switch interval, a line interval, and a main transformer interval.
Optionally, the device interval is a switch interval;
determining to start signal shielding or release signal shielding according to the position state of the ground knife, comprising:
if the ground knives on the two sides of the switch interval are in the closed state, starting signal shielding;
if the ground knife at one side of the switch interval is in a closed state and the ground knife at the other side of the switch is in a separated state, keeping the signal in an original state;
and if the ground knives on the two sides of the switch interval are in the splitting state, removing the signal shielding.
Optionally, the device interval is a line interval;
determining to start signal shielding or release signal shielding according to the position state of the ground knife, comprising:
if the ground knife at the line interval is in a closed state, starting signal shielding;
and if the ground switch at the line interval is in the splitting state, removing the signal shielding.
Optionally, the equipment interval is a main transformer interval;
determining to start signal shielding or release signal shielding according to the position state of the ground knife, comprising:
if the ground knives on any side of the main transformer interval are in a closed state, starting signal shielding;
and if the ground cutters on the two sides of the interval of the main transformer are in the separated state, removing the signal shielding.
Optionally, when the position states of the two side switches and the current flowing through the two side switches meet preset conditions, the method includes:
the two side disconnecting switches are in the separated state, and the current flowing through the two side disconnecting switches is zero.
Optionally, when the position states of the two side disconnecting links and the currents flowing through the two side disconnecting links do not meet preset conditions, the signal shielding is removed.
Optionally, when the position states of the two side disconnecting links and the currents flowing through the two side disconnecting links meet preset conditions, determining to start or release signal shielding according to the position state of the ground switch includes:
and generating a popup confirmation window, and after receiving a confirmation shielding or shielding removal command, shielding or shielding removal of a signal.
In a second aspect, an embodiment of the present invention further provides an apparatus for automatically shielding and unshielding a signal for electrical equipment maintenance, where the apparatus for automatically shielding and unshielding a signal for electrical equipment maintenance includes:
the first acquisition module is used for acquiring the position state of ground knives spaced by equipment;
the second acquisition module is used for acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
and the operation module is used for determining to start signal shielding or remove signal shielding according to the position state of the ground switch when the position states of the two side disconnecting links and the current flowing through the two side disconnecting links meet preset conditions.
Optionally, the operation module includes:
and the confirmation unit is used for generating a popup confirmation window and shielding or shielding releasing signals after receiving a confirmation shielding or shielding releasing instruction.
The embodiment of the invention provides a method and a device for automatically shielding and removing shielding signals for electrical equipment maintenance, wherein the method for automatically shielding and removing shielding signals for electrical equipment maintenance comprises the following steps: acquiring the position state of ground knives spaced by equipment; acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides; and when the position states of the disconnecting links on the two sides and the current flowing through the disconnecting links on the two sides meet preset conditions, determining to start signal shielding or remove signal shielding according to the position states of the grounding switch. Compared with the mode of station side shielding or scheduling side shielding in the prior art, after the equipment maintenance is completed, the electric power system acquires the state signals of the equipment interval again and sends the shielding removing instruction to the station side or the scheduling side according to the state signals, the technical scheme of the embodiment starts signal shielding or removes signal shielding according to the position state of the ground cutter, when the ground cutter is in the maintenance state, the signal shielding is started, once the condition that the ground cutter is in the maintenance state is changed, the electric power system acquires the current position state of the ground cutter according to the ground cutter position state signals uploaded by the ground cutter in real time, the position state of the ground cutter is determined to be changed, the signal shielding is removed immediately, and the condition that the signals are leaked and recovered after the electric equipment maintenance is completed is avoided.
Drawings
Fig. 1 is a flowchart of a method for automatically shielding and de-shielding a signal for overhauling electrical equipment according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for automatically shielding and de-shielding a signal for electrical equipment maintenance according to a second embodiment of the present invention.
Fig. 3 is a flowchart of another method for automatically shielding and de-shielding signals during maintenance of electrical equipment according to the second embodiment of the present invention.
Fig. 4 is a flowchart of a method for automatically shielding and de-shielding a signal for overhauling electrical equipment according to a third embodiment of the present invention.
Fig. 5 is a flowchart of another method for automatically shielding and de-shielding a signal for overhauling electrical equipment according to a third embodiment of the present invention.
Fig. 6 is a flowchart of a method for automatically shielding and de-shielding a signal for overhauling electrical equipment according to a fourth embodiment of the present invention.
Fig. 7 is a flowchart of another method for automatically shielding and de-shielding signals during the overhaul of electrical equipment according to the fourth embodiment of the present invention.
Fig. 8 is a flowchart of a method for automatically shielding and de-shielding a signal for overhauling electrical equipment according to a fifth embodiment of the present invention.
Fig. 9 is a schematic structural diagram of an automatic signal shielding and shielding-releasing device for electrical equipment maintenance according to a sixth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a method for automatically shielding and removing a signal for electrical equipment maintenance according to an embodiment of the present invention, where the embodiment is applicable to a situation where signal shielding or signal shielding removal is started according to a state of an apparatus during electrical equipment maintenance, and the method can be executed by an apparatus for automatically shielding and removing a signal for electrical equipment maintenance, and specifically includes the following steps:
s100: acquiring the position state of ground knives spaced by equipment;
the equipment interval can be a switch interval, a line interval or a master control interval, the equipment interval comprises a grounding switch and two side switches, the grounding switch is connected with the ground, and the two side switches are connected between the bus and the grounding switch. The position state of the ground cutter comprises a state that the ground cutter is positioned in a separating position and a state that the ground cutter is positioned in a closing position. The equipment interval generates a position state signal of the ground cutter according to the position of the ground cutter per se and transmits the position state signal to the power dispatching automation system, and the dispatching automation system obtains the position state of the ground cutter of the equipment interval.
S200: acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
the position states of the two side disconnecting links comprise two states of the two side disconnecting links in the open position and the two side disconnecting links in the close position. The equipment interval generates position state signals of the disconnecting links on the two sides according to the positions of the disconnecting links on the two sides of the equipment interval and transmits the position state signals to the dispatching automation system, and the dispatching automation system obtains the position states of the disconnecting links on the two sides of the equipment interval. And current transformers of corresponding switches are arranged at the positions of the knife switches on the two sides, and the current transformers detect the current flowing through the knife switches on the two sides and transmit the current to the dispatching automation system.
S300: and when the position states of the disconnecting links on the two sides and the current flowing through the disconnecting links on the two sides meet preset conditions, determining to start signal shielding or remove signal shielding according to the position states of the grounding switch.
The preset condition may be that the two-sided knife switch is in the off position and the current is zero. When equipment is overhauled, the equipment interval is in an overhauling state, namely the disconnecting switches on the two sides of the equipment interval are in the separating position, and when the disconnecting switches on the two sides are in the separating position, the current flowing through the disconnecting switches on the two sides is zero, so that when the disconnecting switches on the two sides of the equipment interval are in the separating position and the collected current is zero, signal shielding is determined to be started or removed according to the position state of the grounding switch. Illustratively, when the equipment interval is a line interval, when disconnecting switches on two sides of the line interval are positioned at a separation position and the collected current is zero, if the grounding switch is positioned at a closing position, starting signal shielding; and if the grounding switch is positioned at the branch position, removing the signal shielding.
According to the method for automatically shielding and removing the shielding of the signal for overhauling the electrical equipment, the position state of the ground knife at the interval of the equipment is firstly obtained, then the position state of the disconnecting links at the two sides of the interval of the equipment and the current flowing through the disconnecting links at the two sides are obtained, and when the position state of the disconnecting links at the two sides and the current flowing through the disconnecting links at the two sides meet the preset conditions, the signal shielding is determined to be started or the signal shielding is removed according to the obtained position state of the ground knife. Compared with the mode of station side shielding or scheduling side shielding in the prior art, after the equipment maintenance is completed, the electric power system acquires the state signals of the equipment interval again and sends the shielding removing instruction to the station side or the scheduling side according to the state signals, the technical scheme of the embodiment starts signal shielding or removes signal shielding according to the position state of the ground cutter, when the ground cutter is in the maintenance state, the signal shielding is started, once the condition that the ground cutter is in the maintenance state is changed, the electric power system acquires the current position state of the ground cutter according to the ground cutter position state signals uploaded by the ground cutter in real time, the position state of the ground cutter is determined to be changed, the signal shielding is removed immediately, and the condition that the signals are leaked and recovered after the electric equipment maintenance is completed is avoided.
Example two
Optionally, the device interval includes: at least one of a switch interval, a line interval, and a main transformer interval.
The switch interval includes the earthing switch and the both sides switch of both sides, and the circuit interval includes the earthing switch and the both sides switch of one side, and the main transformer interval includes the earthing switch and the both sides switch of both sides.
Fig. 2 is a flowchart of a method for automatically shielding and de-shielding a signal for electrical equipment maintenance according to a second embodiment of the present invention, and referring to fig. 2, optionally, the equipment interval is a switch interval; the method for automatically shielding and de-shielding the signal for overhauling the electrical equipment comprises the following steps:
s100: acquiring the position state of ground knives spaced by equipment;
s200: acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
s310: when the position states of the two side disconnecting links and the current flowing through the two side disconnecting links meet the preset conditions,
s301: if the ground knives on the two sides of the switch interval are both in the closed state, starting signal shielding;
when the equipment interval is the switch interval, the switch interval includes the ground sword of both sides, and when needs overhauld, the switch interval should be in the maintenance state and the ground sword of both sides all is located to close the position, and the ground sword when both sides all is located to close the position, then start signal shielding, then carry out the maintenance of equipment.
S302: if the ground knife at one side of the switch interval is in a closed state and the ground knife at the other side of the switch is in a separated state, the signal is kept in an original state;
when the ground blades on two sides of the switch interval are operated, the ground blades on two sides are not operated simultaneously, so that the ground blades on one side are closed and the ground blades on one side are separated, the original state of the signal is maintained, namely the shielding state of the signal is maintained when the signal is in the shielding state before, and the shielding-off state of the signal is maintained when the signal is in the shielding-off state.
S303: and if the ground knives on the two sides of the switch interval are in the separated state, the signal shielding is removed.
When the ground knives on two sides are positioned at the separated positions, the maintenance state of the switch interval is changed, the maintenance is completed, the switch interval is changed into a cold standby state, and the signal shielding is immediately removed.
Fig. 3 is a flowchart of another method for automatically shielding and de-shielding a signal during maintenance of electrical equipment according to a second embodiment of the present invention, referring to fig. 3, optionally, when an equipment interval is a switch interval, and when knife switches on two sides of a switch are in an open position and a current is zero, ground knives on two sides of the switch interval are in a closed position, signal shielding is started; the switch is in the closed position when the ground knife at one side is spaced, and the original state is kept when the ground knife at one side is in the separated position; and when the ground knives on the two sides of the switch are in the separated position, the signal shielding is removed. When the disconnecting link on the two sides of the switch is not in the separating position and the current is zero, the signal shielding is removed, and the 'switch telemetering telecommand abnormity' is prompted, wherein telemetering refers to the measurement of the current and telecommand refers to the position state of the equipment interval.
According to the method for automatically shielding and removing the signal for overhauling the electrical equipment, when the equipment interval is the switch interval, when the ground knives on two sides of the switch interval are both in the closed state, the signal shielding is started; when the ground knife at one side of the switch interval is in a closed state and the ground knife at the other side of the switch interval is in a separated state, the signal is kept in an original state; when the ground knives on the two sides of the switch interval are in the separated state, signal shielding is removed, signal shielding starting or signal removing is determined according to the position states of the ground knives on the two sides of the switch interval, when the ground knives are in the overhauling state, signal shielding is started, once the condition that the ground knives are in the overhauling state changes, the overhauling state is converted into a cold standby state, the power system obtains the current position state of the ground knives according to the ground knife position state signals uploaded by the ground knives in real time, and when the position states of the ground knives are determined to have changed, the signal shielding is removed immediately, and signal leakage recovery after the overhauling of the electrical equipment is completed is avoided.
EXAMPLE III
Fig. 4 is a flowchart of a method for automatically shielding and de-shielding a signal during maintenance of electrical equipment according to a third embodiment of the present invention, and referring to fig. 4, optionally, an equipment interval is a line interval;
s100: acquiring the position state of ground knives spaced by equipment;
s200: acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
s310: when the position states of the two side disconnecting links and the current flowing through the two side disconnecting links meet the preset conditions,
s304: if the ground knife at the interval of the line is in the closed state, starting signal shielding;
the circuit interval only comprises a ground cutter on one side, when the circuit interval needs to be overhauled, the circuit interval is in an overhauling state, namely the ground cutter at the circuit interval is positioned at the closing position, and when the ground cutter at the circuit interval is positioned at the closing position, the signal shielding is started to start to overhaul the circuit.
S305: and if the ground switch at the line interval is in the splitting state, the signal shielding is released.
When the ground knives of the line interval are all positioned at the branch position, the maintenance state of the line interval is changed, the maintenance is completed, the line interval is converted into a cold standby state, and the signal shielding is immediately removed.
Fig. 5 is a flowchart of another method for automatically shielding and de-shielding a signal during maintenance of electrical equipment according to a third embodiment of the present invention, referring to fig. 5, optionally, when an equipment interval is a line interval, and when disconnecting switches on two sides of the line interval are in an open position and a current is zero, a ground switch of the line interval is in a closed position, then signal shielding is started; and when the ground knife at the interval of the lines is in the branch position, the signal shielding is removed. When the disconnecting links on the two sides which do not meet the line interval are in the separated position and the current is zero, the signal shielding is removed, and 'line interval telemetering and telesignalling abnormity' is prompted.
According to the method for automatically shielding and releasing the signal for overhauling the electrical equipment, when the equipment interval is the line interval, when the ground cutters at the line interval are in the closed state, the signal shielding is started; when the ground knife at the line interval is in the separating state, the signal shielding is removed. When the ground knife is in the overhaul state, signal shielding is started, once the condition that the ground knife is in the overhaul state is changed, the overhaul state is converted into a cold standby state, the power system acquires the current position state of the ground knife according to a ground knife position state signal uploaded by the ground knife in real time, the position state of the ground knife is determined to be changed, the signal shielding is immediately removed, and signal leakage recovery after the electric equipment overhaul is finished is avoided.
Example four
Fig. 6 is a flowchart of a method for automatically shielding and unshielding a signal for electrical equipment maintenance according to a fourth embodiment of the present invention, and referring to fig. 6, optionally, the equipment interval is a main transformer interval;
s100: acquiring the position state of ground knives spaced by equipment;
s200: acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
s310: when the position states of the two side disconnecting links and the current flowing through the two side disconnecting links meet the preset conditions,
s306: if the ground knives on either side of the main transformer interval are in the closed state, signal shielding is started;
when the equipment interval is the main transformer interval, the main transformer interval includes the ground sword of both sides, and when needs overhauld, the main transformer interval should be in the maintenance state. When the main transformer is in the maintenance state, the ground knife on any side is located at the closing position, the signal shielding is started at the moment, and then the equipment is maintained.
S307: and if the ground cutters on the two sides of the interval of the main transformer are in the separated state, the signal shielding is removed.
When the earthing switch of main transformer spaced both sides all was located the branch position, main transformer spaced maintenance state was changed, overhauld the completion, and the main transformer interval truns into cold standby state, removes signal shielding this moment immediately.
Fig. 7 is a flowchart of another method for automatically shielding and unshielding signals during maintenance of electrical equipment according to the fourth embodiment of the present invention, referring to fig. 7, optionally, when the equipment interval is the main transformer interval, when the disconnecting links on both sides of the main transformer interval are in the open position and the current is zero, and the ground switch on either side of the main transformer interval is in the closed position, the signal shielding is started; and when the ground cutters on all sides of the interval of the main transformer are positioned separately, the signal shielding is removed. When the disconnecting switches on the two sides which do not meet the interval of the main transformer are in the separated position and the current is zero, the signal shielding is removed, and the 'main transformer interval telemetering telecommand abnormity' is prompted.
According to the method for automatically shielding and releasing the signal for overhauling the electrical equipment, when the equipment interval is the main transformer interval, when the ground cutter on any side of the main transformer interval is in the closed state, the signal shielding is started; when the ground cutters on the two sides of the interval of the main transformer are in the separated state, the signal shielding is removed. When the ground knife is in the overhaul state, signal shielding is started, once the condition that the ground knife is in the overhaul state is changed, the overhaul state is converted into a cold standby state, the power system acquires the current position state of the ground knife according to a ground knife position state signal uploaded by the ground knife in real time, the position state of the ground knife is determined to be changed, the signal shielding is immediately removed, and signal leakage recovery after the electric equipment overhaul is finished is avoided.
EXAMPLE five
Fig. 8 is a flowchart of a method for automatically shielding and unshielding a signal of electrical equipment overhaul according to a fifth embodiment of the present invention, and with reference to fig. 8, optionally, the method for automatically shielding and unshielding a signal of electrical equipment overhaul specifically includes:
s100: acquiring the position state of ground knives spaced by equipment;
s200: acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
s300: when the position states of the disconnecting links on the two sides and the current flowing through the disconnecting links on the two sides meet preset conditions, determining to start signal shielding or remove signal shielding according to the position states of the grounding switch;
optionally, a popup confirmation window is generated, and when a confirmation shielding or shielding removal instruction is received, the signal is shielded or shielding removal is performed.
When the position states of the two side disconnecting links and the current flowing through the two side disconnecting links meet preset conditions, a popup confirmation window is generated without judging the position state of the ground switch, and after a confirmation shielding instruction is received, signal shielding is carried out. And when the position states of the two side disconnecting links or the currents flowing through the two side disconnecting links do not meet the preset conditions, the signal shielding is released.
S400: and when the position states of the two side disconnecting links and the current flowing through the two side disconnecting links do not meet the preset conditions, removing the signal shielding.
The preset condition is that the two-side disconnecting links are located at the separating position, the current flowing through the two-side disconnecting links is zero, when the two-side disconnecting links are located at the separating position, the current flowing through the two-side disconnecting links is not zero or the two-side disconnecting links are located at the closing position, the current flowing through the two-side disconnecting links is zero or the two-side disconnecting links are located at the closing position, and when the current flowing through the two-side disconnecting links is not zero, the position states of the two-side disconnecting links and the current flowing through the two-side disconnecting links do not meet the preset condition, at the moment, the signal shielding is released, and the position states of the two-side disconnecting links and the current flowing through the two-side disconnecting links are reacquired.
According to the method for automatically shielding and removing the shielding of the signal for overhauling the electrical equipment, when the position states of the disconnecting links on the two sides and the current flowing through the disconnecting links on the two sides meet preset conditions, a popup confirmation window is generated, and a control worker receives a shielding instruction and inputs the shielding instruction into the popup confirmation window to shield the signal; and when the position states of the two side disconnecting links and the current flowing through the two side disconnecting links do not meet the preset conditions, removing the signal shielding. After the generation of the popup confirmation window receives the shielding instruction, signal shielding is carried out, and when the position states of the disconnecting links on the two sides and the current flowing through the disconnecting links on the two sides do not meet preset conditions, the signal shielding is removed, so that the correctness of the signal shielding situation is further ensured, and the signal is prevented from being shielded by mistake.
EXAMPLE six
Fig. 9 is a schematic structural diagram of an automatic signal shielding and unshielding device for electrical equipment overhaul according to a sixth embodiment of the present invention, and referring to fig. 9, optionally, the automatic signal shielding and unshielding device for electrical equipment overhaul includes:
the first acquisition module 10 is used for acquiring the position state of the ground cutter at intervals of the equipment;
the second obtaining module 20 is configured to obtain position states of the two side disconnecting links spaced by the device and currents flowing through the two side disconnecting links;
and the operation module 30 is used for determining to start signal shielding or remove signal shielding according to the position state of the ground switch when the position states of the two side disconnecting links and the current flowing through the two side disconnecting links meet preset conditions.
The automatic signal shielding and shielding removing device for electrical equipment maintenance provided by the embodiment comprises: the first acquisition module is used for acquiring the position state of ground knives spaced by equipment; the second acquisition module is used for acquiring the position states of the disconnecting links on two sides of the equipment at intervals and the current flowing through the disconnecting links on the two sides; and the operation module is used for determining to start signal shielding or remove signal shielding according to the position state of the ground switch when the position states of the switches on the two sides and the current flowing through the switches on the two sides meet preset conditions. When the disconnecting links on the two sides of the operation module are located at the separating position and the current is zero, if the grounding switch is located at the separating position, the signal shielding is started, and if the grounding switch is located at the closing position, the signal shielding is removed. According to the technical scheme, signal shielding is started or removed through the position state of the ground cutter, when the ground cutter is in the overhauling state, the signal shielding is started, once the condition that the ground cutter is in the overhauling state is changed, the power system acquires the current position state of the ground cutter according to the ground cutter position state signals uploaded by the ground cutter in real time, the position state of the ground cutter is determined to be changed, the signal shielding is immediately removed, and the signal is prevented from being leaked and recovered after the overhauling of electrical equipment is completed. With continued reference to fig. 9, optionally, the operation module 30 includes:
the confirming unit 31 is configured to generate a popup confirmation window, and when receiving a confirmation masking or a cancellation masking command, perform signal masking or cancellation masking.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for automatically shielding and de-shielding signals for overhauling electrical equipment is characterized by comprising the following steps:
acquiring the position state of ground knives spaced by equipment;
acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
and when the position states of the two side disconnecting links and the currents flowing through the two side disconnecting links meet preset conditions, determining to start signal shielding or remove signal shielding according to the position states of the grounding switch.
2. A method of automatic signal masking and unmasking for electrical equipment servicing of claim 1, wherein the equipment interval comprises: at least one of a switch interval, a line interval, and a main transformer interval.
3. The method for automatically shielding and unshielding signals for servicing electrical equipment of claim 2, wherein said equipment interval is a switching interval;
determining to start signal shielding or release signal shielding according to the position state of the ground knife, comprising:
if the ground knives on the two sides of the switch interval are in the closed state, starting signal shielding;
if the ground knife at one side of the switch interval is in a closed state and the ground knife at the other side of the switch interval is in a separated state, keeping the signal in an original state;
and if the ground knives on the two sides of the switch interval are in the splitting state, removing the signal shielding.
4. The method for automatically shielding and unshielding signals for servicing electrical equipment of claim 2, wherein said equipment interval is a line interval;
determining to start signal shielding or release signal shielding according to the position state of the ground knife, comprising:
if the ground knife at the line interval is in a closed state, starting signal shielding;
and if the ground switch at the line interval is in the splitting state, removing the signal shielding.
5. The method for automatically shielding and unshielding signals for overhauling electric equipment as claimed in claim 2, wherein the equipment interval is a main transformer interval;
determining to start signal shielding or release signal shielding according to the position state of the ground knife, comprising:
if the ground knives on any side of the main transformer interval are in a closed state, starting signal shielding;
and if the ground cutters on the two sides of the interval of the main transformer are in the separated state, removing the signal shielding.
6. The method for automatically shielding and de-shielding an electrical equipment overhaul signal according to claim 1, wherein when the position state of the two-side disconnecting link and the current flowing through the two-side disconnecting link meet preset conditions, the method comprises the following steps:
the two side disconnecting switches are in the separated state, and the current flowing through the two side disconnecting switches is zero.
7. The method for automatically shielding and de-shielding signals for overhauling electric equipment as claimed in claim 1, wherein the signal shielding is released when the position state of the two-sided disconnecting link and the current flowing through the two-sided disconnecting link do not satisfy preset conditions.
8. The method for automatically shielding and de-shielding signals according to claim 1, wherein when the position states of the two-sided disconnecting links and the current flowing through the two-sided disconnecting links satisfy preset conditions, determining to activate or de-shield the signals according to the position state of the grounding switch comprises:
and generating a popup confirmation window, and after receiving a confirmation shielding or shielding removal command, shielding or shielding removal of a signal.
9. The utility model provides an automatic device that shields and remove shielding of signal that electrical equipment overhauld which characterized in that includes:
the first acquisition module is used for acquiring the position state of ground knives spaced by equipment;
the second acquisition module is used for acquiring the position states of the disconnecting links on two sides of the equipment interval and the current flowing through the disconnecting links on the two sides;
and the operation module is used for determining to start signal shielding or remove signal shielding according to the position state of the ground switch when the position states of the two side disconnecting links and the current flowing through the two side disconnecting links meet preset conditions.
10. The apparatus for automatically shielding and unshielding a signal according to claim 9, wherein the operation module comprises:
and the confirmation unit is used for generating a popup confirmation window and shielding or shielding releasing signals after receiving a confirmation shielding or shielding releasing instruction.
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| CN202011629118.2A CN112821265B (en) | 2020-12-31 | 2020-12-31 | Method and device for automatically shielding and releasing signals for overhauling electrical equipment |
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| CN101989938A (en) * | 2009-08-04 | 2011-03-23 | 上海市电力公司 | Filtration system and method of mis-telecommand scheduling end of transformer substation |
| CN103236745A (en) * | 2013-05-07 | 2013-08-07 | 国家电网公司 | Distinguishing method of misreported remote signaling and correct remote signaling of transformer substation |
| CN103269124A (en) * | 2013-05-07 | 2013-08-28 | 国家电网公司 | System achieving substation misinformation remote signaling scheduling end filtration |
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| CN112821265B (en) | 2024-02-13 |
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