JP2005269697A - System status display unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system status display unit which displays the state of existence of charge by the existence of light emission of a simulated conductor, with respect to all the systems, that include special high-voltage systems of a power receiving system. <P>SOLUTION: This system state display unit simulatively displays a power system which receives power from the special high-voltage system and steps down this received power with a transformer prior to distribution, by the symbols of system hardware components, such as a switche 89 or switch 52, transformers TR1-TR3, etc. and a simulated conductor 11 which shows the system. The simulated conductor 11 is made into the shape of a band which has a phosphor and receives the input of the detection signal of voltage detectors VD1 and VD2, which detect the presence of the charge of the special high-voltage system, with the switching state signal of the switch 89 or 52 being provided in an actual system, and the actuating signal of a shortage high-voltage relay 27S1 being provided in the distribution system; and it detects the system part in a charged state with these signal states and lights the phosphor of the simulated conductor 11, corresponding to the system part in a charged state, thereby displaying the charge state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a system state display device that displays a power system in a simulated manner using symbols of system components such as switches and transformers and simulated conductors representing the system.

  In general, in a power receiving / transforming monitoring facility, the system configuration can be graphically displayed on a display screen such as a CRT, a graphic panel, etc., with a symbol of a device installed in the power system or a simulated conductor representing the system, and the system status can be monitored I am doing so.

  However, the conventional system status display is merely a representation of the system configuration, and the maintenance manager is provided with the actual system to determine the operational status of the equipment and which part of the displayed system is charged. Depending on the open / closed state of the switch, information from the voltage detection device and the undervoltage relay, etc., it is necessary to make a judgment on its own, making the judgment difficult and time consuming, and a judgment error may occur.

Moreover, in the system | strain connected to the generator, displaying the charge condition of the system | strain accompanying operation | movement of a generator with LED has already been performed (for example, refer patent document 1). However, there is no power receiving / transforming system in which the operation signal of the generator cannot be obtained, in which the charging state is simulated and displayed for all systems including the special high voltage system.
JP-A-62-203508

  Thus, there is no display of the charging state of the entire receiving / transforming system including the special high voltage system, which is inconvenient in monitoring the system.

  An object of the present invention is to provide a system state display device that displays the presence / absence of charge based on the presence / absence of light emission of a simulated conductor for all systems including a special high voltage system of a receiving / transforming system.

  The system status display device of the present invention receives power from a special high-voltage system, reduces the received voltage with a transformer, and distributes the power system, a symbol representing system configuration equipment such as a switch and a transformer, and a simulation representing the system A system state display device that performs a simulation display with a conductor, wherein the simulation conductor is formed in a strip shape having a light emitter, and is provided in a detection signal of a voltage detection device that detects whether or not a special high voltage system is charged, in the actual system Inputs the switching state signal of the switch and the operation signal of the undervoltage relay provided in the distribution system, detects the system part in the charged state based on these signal states, and the light emitter of the simulated conductor corresponding to the system part in the charged state The charging state is displayed by turning on.

  According to the present invention, the state of charge and transformation of the power receiving / transforming system including the special high voltage system is automatically displayed depending on whether or not the simulated conductor representing the system emits light, so that the state of the entire power receiving / transforming system can be grasped at a glance. It is possible to accurately determine the state of charge and the system operation state, and the burden on the maintenance operator can be reduced.

  Hereinafter, an embodiment of a system state display device according to the present invention will be described in detail with reference to the drawings.

  Figure 1 shows the power receiving / transforming system that receives power through two lines of the special high voltage system, passes through a transformer for transaction, and then divides into multiple systems. This shows a state in which simulation display is performed using symbols of system configuration devices such as the above and simulated conductors representing the system.

  In FIG. 1, VD1 and VD2 represent voltage detectors provided in the extra high voltage system, respectively. Reference numeral 11 denotes a strip-shaped simulated conductor representing a system, and a light emitter is attached to display the state of charge. When this light emitter is turned on, the entire simulated conductor 11 in the portion covered by the light emitter is displayed in a light emitting manner. . 89 is a symbol of a disconnector, which is a type of switch, and 52 is a symbol of a breaker, which is also a type of switch, which also serves as an open / close operation switch.・ A green lamp is provided. Reference numeral 12 denotes a transformer for transaction with the electric power company, and reference numeral 13 denotes a switch symbol managed by the electric power company.

  The actual system configuration will be described using the above symbols and simulated conductors. The two-line extra high voltage system 11A1, 11A2 includes the disconnectors 89-1, 89-2, the conductors 11B1, 11B2, the disconnectors 52-01, 52-02, and the disconnectors 89R1, 89R2 in series. It is connected to the bus 11C. From this first bus 11C, the disconnector 89-3, the transaction transformer 12, and the disconnector 89-4 are connected in series to the second bus 11D.

  A switch 13 managed by the electric power company is provided between the first bus 11C and the second bus 11D. This switch 13 is normally open, and is temporarily closed by an electric power company, for example, at the time of inspection of the transaction variable 12, and bypasses the transaction transformer 12 so as to bypass the first bus 11C and the second bus 11D. Connect between.

  A plurality of (three in the illustrated example) power supply systems 11E1, 11E2, and 11E3 are branched from the second bus 11D, and disconnectors 89-5, 89-6, and 89-7 and disconnectors 52-03 and 52, respectively. -04, 52-05 are connected in series to the primary side of the corresponding transformers TR1, TR2, TR3. From the secondary side of these transformers TR1, TR2, TR3, conductors 11E11, 11E21, 11E31 for supplying electric power to a load (not shown) are respectively derived.

  The primary sides of the special high voltage systems 11A1 and 11A2 and the transformers TR1, TR2 and TR3 are connected to the ground via corresponding disconnectors 89E1, 89E2, 89E3, 89E4 and 89E5, respectively. These earthing disconnectors 89E1, 89E2, 89E3, 89E4, and 89E5 are normally open, and the primary sides of the corresponding special high voltage systems 11A1, 11A2 and transformers TR1, TR2, TR3 are used for inspection and the like. When the switch is opened and no voltage is applied, it is closed and connected to ground to protect the inspector.

  In the simulation system display configured in this way, which part of the system is in the charged state can be confirmed by checking the switching state of the corresponding switch from the lighting state of the red / green lamp provided in each switch symbol. Can be determined. However, the lighting state of the red / green lamp only indicates the opening / closing state of the corresponding switch, and the supervisor must estimate the charged state of which part of the system from the opening / closing state of these switches. For this reason, it is difficult to grasp the state of charge, and there is a risk of discrimination. To make an instant judgment, many years of skill are required.

  Therefore, if the simulated conductor 11 representing each part of the system is turned on at the time of charging and light-emitting is displayed, it can be instantaneously determined which part of the system is in the charged state. The algorithm for this will be described with reference to FIG.

  FIG. 2 shows a case where each of the extra high voltage systems 11A1 and 11B1, the first bus 11C and the conductor 11E11 shown in FIG.

  That is, one special high voltage system (simulated conductor 11A1) has an AND condition that the voltage detection device VD1 provided in the corresponding special high voltage system detects the state of charge and that the grounding disconnector 89E1 is open. Illuminated to indicate that the system portion 11A1 is in a charged state. Further, the conductor portion (simulated conductor 11B1) after the disconnector 89-1 of the same special high voltage system is in a charged state and the disconnector 89E1 for grounding is open, and the disconnector 89 It is turned on under the condition that -1 is closed, and a light emission display is made to indicate that this part is in a charged state.

  In the first bus (simulated conductor 11C), the above-described voltage detecting device VD1 is charged, the grounding disconnector 89E1 is open, the disconnector 89-1 is closed, and the disconnector 52-01 is in the special high voltage system. Is closed and disconnector 89R1 is closed, or the same AND condition is established in the other special high voltage system, that is, voltage detection device VD2 is charged, grounding disconnector 89E2 is open, disconnector When 89-2 is closed, the breaker 52-02 is closed, and the disconnector 89R2 is established, either or both of them are turned on as an OR condition, and a light emission display is made to indicate that this part is in a charged state.

  The transformer secondary conductor (simulated conductor 11E11) is lit on the condition that the undervoltage relay 27S1 provided in the actual system is inoperative, and displays that this part is in a charged state.

  Here, the state of charge of the special high-voltage system can be detected by detecting the presence or absence of the divided voltage by dividing the system voltage using a high-voltage capacitor by the voltage detection device VD1 (VD2). Is used. For each disconnector 89 and each breaker 52, the output signal of the auxiliary contact that is linked to the opening / closing operation of the main circuit contact is used. Further, the detection signal is used for the undervoltage relay 27S1.

  Thus, even if there is no generator operation signal or the like, the state of charge of the extra high voltage system is directly detected by the voltage detection device, so that the corresponding simulated conductor portion can be made to emit light according to the result. In addition, the other part can detect the charging state and emit light from the corresponding simulated conductor part based on the switching state signal of the switch or the operation signal of the undervoltage relay related to the system part.

  As a result, the simulated conductor of the corresponding part can be caused to emit light with respect to the entire receiving / transforming system including the special high voltage system, and it is possible to grasp at a glance which part is in the charged state.

It is a front view which shows one Embodiment of the system status display apparatus by this invention. It is a logic circuit diagram which shows the display control algorithm used for one embodiment same as the above.

Explanation of symbols

11 Simulated conductor 89 Display symbol of disconnector 52 Display symbol of breaker VD1, VD2 Voltage detector 27S1 Undervoltage relay

Claims (1)

System status display that receives power from a special high-voltage system and steps down the received voltage with a transformer to distribute the power system using symbols of system components such as switches and transformers and a simulated conductor representing the system A device,
The simulated conductor is formed in a strip shape having a light emitter, and a detection signal of a voltage detection device that detects the presence / absence of charging of an extra high voltage system, a switching state signal of a switch provided in an actual system, a shortage provided in a distribution system An operation signal of a voltage relay is input, a system part in a charged state is detected based on these signal states, and the light emitting body of the simulated conductor corresponding to the system part in the charged state is turned on to display a charge state. System status display device.

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