JP2001103666A - Opening phase-controlling device and dispersion-type- controlling device incorporating it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the opening point of a system current even by a trip signal according to an ShR protection device when a system fails. SOLUTION: In the ShR opening phase-controlling device with an opening phase control unit 106 for detecting an opening point by reading the amount of system electricity and the release operation command of a human system, a trip signal 102 from an ShR protection device is set to the start signal of the ShR opening phase control unit 106.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides an opening command to a ShR load switch by executing an opening phase control also in a trip signal from a ShR protection device in the event of a system fault, in addition to the opening command output by manual operation. The present invention relates to an opening phase control device capable of outputting the same and a distributed control device incorporating the same.

[0002]

2. Description of the Related Art A conventional opening phase control device activates an opening phase control unit only when an opening command is issued by a manual operation. No consideration was given to activating the control unit. For this reason, at the time of a system failure, the ShR load switch is opened without the opening phase control, and the ShR load switch is opened.
When the R load switch is opened, a re-arc occurs,
Excessive surge has caused insulation deterioration of equipment and the like.

[0003]

In the above-mentioned conventional apparatus, the opening phase control unit is activated only when the opening command is made by manual operation. Therefore, the opening phase control is not performed by the trip command from the ShR protection device in the event of a system failure. Not possible, ShR
When the load switch was opened, a re-arcing phenomenon occurred, and an excessive surge could inevitably deteriorate the insulation of the equipment.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and detects the opening point of the system current also by a trip signal from a ShR protection device at the time of a system failure, thereby opening phase control even in emergency control. By executing an open command to the ShR load switch at an optimal timing in consideration of the operation time of the ShR load switch within the protection coordination time, it is possible to prevent insulation deterioration of the equipment and the like. It is an object to provide a polar phase control device.

[0005]

According to a first aspect of the present invention, an opening phase control device includes an input circuit for receiving a trip signal from a ShR protection device as a start signal to an opening phase control unit. Opening command can be output within the protection coordination time by using the auxiliary relay that operates at high speed. In this configuration, the opening point can be normally detected by securing the sampling time, and an opening command can be output to the ShR load switch.

In the opening phase control device according to the present invention, the opening phase control unit is activated by a trip signal from the ShR protection device. Cannot detect the opening point, the bypass circuit is forcibly applied within the protection coordination time.
An open command is output to the hR load switch.

According to a third aspect of the present invention, there is provided the opening phase control device according to the first aspect, wherein the opening phase control is performed when there is no system voltage due to bus stop and when the opening phase control unit is abnormal. The configuration is such that the start of the unit is locked and the output of the calculation result is locked, and the opening command is output to the ShR load switch by the bypass circuit without performing the opening phase control.

The distributed control device according to claim 4 of the present invention is characterized in that in a distributed system, an open phase control function is implemented for each distributed control device, and the distributed control device is distributed and arranged.
The configuration was such that the influence on the system due to the failure of the device was minimized, the opening phase control was performed when the circuit breaker was opened, and an open command was output to the circuit breaker.

According to a fifth aspect of the present invention, there is provided a distributed control device according to the fourth aspect, wherein a common control device for performing information processing on the entire equipment is provided, and the opening phase control function is implemented in the device. Can simplify the system,
By transmitting the opening point information to a device for controlling the circuit breaker via a transmission system, the opening phase control is performed when the circuit breaker is opened, and an opening command is output to the circuit breaker.

[0010]

FIG. 1 is a block diagram showing an embodiment of an opening phase control device according to [claim 1].
In FIG. 1, reference numeral 101 denotes an opening operation of a human system, 102 denotes a trip signal from the ShR protection device at the time of a system accident, 103
Is an input circuit, 104 is a start signal, 105 is a bus voltage, 1
06 is an opening phase control unit, 107 is a control command output circuit, 108 is a bypass circuit, and 109 is an opening command.

Next, the operation will be described. First, an input circuit 1 constituted by an auxiliary relay is used for opening a human system 101 and a trip signal 102 from a ShR protection device in the event of a system failure.
03 is input as a start signal 104. Next, the bus voltage 105 is input to the opening phase control unit 106, and after an opening point is detected by the control command output circuit 107, an opening command 109 is output to the ShR load switch. In addition, after the start command 104 is taken into the bypass circuit 108, the ShR load switch must be opened to the open command 10 within the protection coordination time.
9 is output.

According to the present embodiment, the opening phase control unit is activated not only by the opening operation of the human system but also by the trip signal from the ShR protection device in the event of a system failure, so that the opening point of the system current can be determined. It can detect and output the opening command to the ShR load switch, and can output the opening command after detecting the opening point even in the case of a transmission line accident. Can be suppressed, and deterioration of the device can be prevented.

FIG. 2 is a block diagram showing an embodiment of the opening phase control device according to [claim 2] and [claim 3]. 2, the same functional portions as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In the second embodiment, the load switch is opened even when the opening point cannot be detected. In the third embodiment, when the bus voltage is stopped, the opening phase control unit is turned off. An open command is output when an abnormality occurs. In FIG. 2, 2
01 is a protection coordination time, 202 is 84 relays, 203 is a bus stop confirmation timer, and X and Y are auxiliary relays.

Next, the operation will be described. Start command 10
4 is also input to the bypass circuit 108 for securing the protection coordination time 201 during the opening control of the ShR load switch, separately from the opening phase control unit 106. Therefore, if the opening point of the system current cannot be detected within the protection coordination time 201, if there is no voltage due to the bus stop confirmation timer 203 condition being satisfied under the condition of the operation of the 84 relay 202, and if the opening phase control unit 106 becomes abnormal, Unable to expect opening point detection. In this case, the opening phase control unit 106 is locked, and the opening command 109 is output to the ShR load switch by the bypass circuit 108.

According to the second embodiment, when the opening point cannot be detected, the auxiliary relay X is operated by using the bypass circuit 108, and the opening of the ShR load switch is always performed within the protection coordination time. According to the third embodiment, when the system voltage is not present due to the stop of the bus and when the opening phase control unit becomes abnormal, the ShR is output according to the third embodiment.
An opening command can be output to the load switch.

FIG. 3 is a block diagram showing an embodiment of a distributed control apparatus according to [claim 4]. In this embodiment, a distributed system is used, and the opening phase control device is incorporated in the distributed control device as an opening phase control function. That is, in a distributed system in which a distributed control device 301 and a monitoring control device 302 for monitoring and controlling the entire equipment are connected via a transmission system 303, the open phase control device is used as an open phase control function 304 as a distributed control device. And detects the opening point based on the system current 305 of the control object taken into the own device and outputs an opening command 306 to the circuit breaker at a timing considering the operation time of the circuit breaker. .

According to the present embodiment, the system can be simplified by incorporating the opening phase control device in the distributed control device as an opening phase control function, and the optimum operation taking into account the operation time of the circuit breaker can be achieved. At the timing, an open / close command can be output to the circuit breaker.

FIG. 4 is a block diagram showing an embodiment of the distributed control apparatus according to [claim 5]. In FIG.
The same functional parts as those in FIG. In this embodiment, a common control device for performing common monitoring and control of the equipment is provided in the distributed system, and by incorporating the opening phase control function, the opening point information is transmitted to the distributed control apparatus of the equipment via transmission. When the opening command is received from the monitoring and control device, the opening and closing of the opening point information is performed at the optimal timing considering the transmission delay and the operation time of the breaker.
This is to output the input command.

That is, in a distributed system, a common control unit 401 for performing information processing common to the equipment is provided, and further, an opening phase control function 304 is incorporated, and the opening of a corresponding circuit breaker is performed by a system current 305 taken into the own apparatus. Detect poles,
The opening point information 402 is constantly transmitted to each of the distributed control devices 301 for controlling the equipment via the transmission system 303.

At this time, when the release command is received from the monitoring control device, the distributed control device transmits the opening point information received from the common control device to the breaker at a timing in consideration of the transmission delay and the operation time of the breaker. And outputs an opening command 306. According to the present embodiment, each distributed control device can obtain the opening point information by the open phase control device from the common control device, and efficient processing can be performed.

[0021]

As described above, according to the present invention, the opening phase control unit can be started not only by the manual opening operation but also by the start command by the trip signal from the ShR protection device in the event of a system accident. By detecting the opening point of the system current and outputting an opening command to the ShR load switch within the protection coordination time, the re-arcing phenomenon at the time of the opening operation of the ShR load switch is suppressed, and the deterioration of the equipment is suppressed. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an opening phase control device according to [claim 1].

FIG. 2 is a block diagram showing an embodiment of [Claim 2] and [Claim 3].

FIG. 3 is a block diagram showing an embodiment of [claim 4].

FIG. 4 is a block diagram showing an embodiment of [claim 5].

[Explanation of symbols]

 101 Opening operation of human system 102 Trip signal 103 Input circuit 104 Start command 105 Bus voltage 106 Opening phase control unit 107 Control command output circuit 108 Bypass circuit 109 Opening command 201 Protection coordination time 202 84 Relay 203 Bus stop confirmation timer 301 Distributed control Device 303 Transmission system 304 Opening phase control function 305 System current 306 Opening command 401 Common control device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Takashi Kiritani 2-24-24 Harumi-cho, Fuchu-shi, Tokyo Toshiba System Technology Co., Ltd. (72) Wataru Yamamori 1-Toshiba-cho, Fuchu-shi, Tokyo F-term in Toshiba Fuchu factory (reference) 5G066 AB01 HA06 HA13

Claims (5)

[Claims] 1. An ShR opening phase control device having an opening phase control unit for detecting an opening point by taking in a system electric quantity and an opening operation command of a human system, wherein a trip signal from the ShR protection device is output from the ShR protection device. An opening phase control device, which is used as a start signal of an opening phase control unit. 2. The opening phase control device according to claim 1, wherein an opening command is output to the load switch within a protection coordination time when an opening point cannot be detected when the opening phase control unit is started. Opening phase control device. 3. The opening phase control device according to claim 1, wherein the start of the opening phase control unit is performed on condition that there is no system voltage due to bus stop and an activation command is received when the opening phase control unit is abnormal. An opening phase control device which locks and outputs a start command as an opening command to a load switch via a bypass circuit. 4. In a distributed system in which a distributed control device provided in a power system equipment and performing monitoring and control and a monitoring and control device performing supervision and control of the entire power system equipment are connected by a transmission system, each distributed system is It has an opening phase control function that detects the opening point based on the system electric quantity taken into the decentralized control device and the opening command from the monitoring control device when opening the breaker to the control device. Distributed control device. 5. The distributed control device according to claim 4, wherein a common control device for performing information processing common to the equipment is provided as one type of the distributed control measures, and the system current is always controlled by the system electric quantity taken into the common control device. A distributed control device for detecting the opening point of the above and transmitting the opening point information to another distributed control device via a transmission system.