CN103454994A - Control method suitable for multiple-seat 500kV transformer substation remote-control transmission - Google Patents

Abstract

The present invention provides a control method suitable for remote transmission of multiple 500kV substations. The method includes the steps of: before the dispatching master station and the monitoring center master station test the remote control of a remote control object, the object is located on the backboard of the measurement and control device. The remote control terminal is pulled out, and the dispatching master station performs remote control transmission for a remote control object. The 500kV substation uses a multimeter to test the on-off status of the remote control contacts to verify the consistency and correctness of the remote control test; by disconnecting the remote control of all measurement and control devices in the 500kV substation The outlet pressure plate, the QK handle on the circuit breaker measurement and control panel of the 500kV substation and the measurement, control and protection integrated panel are switched to the local position, so as to ensure the safe and stable operation of the power grid and avoid power grid accidents. The beneficial effect is that under the online condition, the remote control transmission function test of six 500kV substations is completed within 30 days, which improves work efficiency, reduces power failure transmission time, and provides technical support for the safe and stable implementation of the entire power main network.

Description

The Control Method Adapting to the Remote Transmission of Multiple 500kV Substations

technical field

The invention relates to a control method suitable for remote transmission of multiple 500kV substations.

Background technique

Due to the large time span of commissioning of the six 500kV substations of Beichen, Wuzhuang, Binhai, Dongli, Lutai, and Banqiao, the versions of the respective monitoring system manufacturers are inconsistent. For example, the monitoring system of Binhai substation was put into operation in 2002. It adopts the BSJ-2200 monitoring system produced by NARI Technology. The monitoring and control panel has dense terminal rows and no functional partitions, so it is difficult to adapt to the current technological development direction. The function of configuring "centralized control" is complex, involving the sequence control files of each unit, which affects the remote control of each unit, resulting in a high risk of remote control transmission.

The 500kV substation has a relatively long power-supply period for primary equipment. If the actual remote control transmission method is adopted, it will take 2-3 years to complete the test by remote control of the whole station. Obviously, this method does not meet the construction requirements of the company's "three collections and five majors" control integration. Therefore, in order to meet the needs of new technology development and ensure the safe and stable operation of the main grid of Tianjin Electric Power, it is necessary to formulate remote control transmission when realizing the remote control function of six 500kV substations in Beichen, Wuzhuang, Binhai, Dongli, Lutai and Banqiao. plan.

Contents of the invention

In view of the structural deficiencies in the prior art, the purpose of the present invention is to provide a structure suitable for remote control transmission of multiple 500kV substations, so as to facilitate the safe and stable operation of the entire power grid by improving the remote control function of multiple 500kV substations, and effectively avoid the risk of power grid accidents occur.

In order to achieve the above object, the technical solution adopted by the present invention is to provide a control method adapted to the remote transmission of multiple 500kV substations. The method controls multiple 500kV substations through the dispatching master station and the monitoring center master station of Tianjin Electric Power Company. The method includes the following steps:

Before the dispatching master station and the monitoring center master station test the remote control of a certain remote control object, the remote control terminal on the backboard of the measurement and control device where the remote control object is located is pulled out, and then the dispatching master station performs remote control transmission on the certain remote control object, The automation professionals at the 500kV substation end use the multimeter access file to test the on-off status of the remote control contacts, and verify that the remote control of the dispatching master station and monitoring center master station of Tianjin Electric Power Company is consistent and correct with the background remote control test of the 500kV substation monitoring system;

The simulated transmission structure is adopted for the circuit breakers, 500kV high-voltage reactors and main transformer gears of several 500kV substations in operation, and the actual transmission scheme is adopted for the circuit breakers in the disconnected state of the disconnector and the circuit breakers of the integrated measurement, control and protection device. Open the remote control outlet pressure plate of all the measurement and control devices in the 500kV substation, and switch the QK handle on the circuit breaker measurement and control panel and the integrated measurement, control and protection screen of the 500kV substation to the local position, so as to ensure the safe and stable operation of the power grid and avoid grid accidents and power grids. ACCIDENT;

The background machine of the monitoring system of the 500kV substation is a device for monitoring and controlling the on-duty personnel in the substation. The measurement and control device is a device for collecting factual data of the equipment in the substation. Since the measurement and control devices are all in operation and cannot be operated, a simulation test device is used. To replace the measurement and control device to complete the test;

The dispatching master station and monitoring center of Tianjin Electric Power Company respectively conduct remote control preset tests on a remote control object in a 500kV substation.

The effect of the present invention is to complete the remote control transmission function test of six 500kV substations within 30 days without power failure of primary equipment, improve work efficiency, reduce power failure transmission time, and provide safe and stable implementation of the entire power main network Provide technical support. The simulated remote control transmission scheme of this structure performs the work of simulated remote control transmission without power failure. It can be popularized and used in 220kV and above substations. After the program is widely used, it will provide technical support for Tianjin Power Grid to realize unattended substations of 220kV and above, provide control means for the centralized monitoring of Tianjin Control Center, and provide technical support for the large-scale operation construction of Tianjin Electric Power Company.

Description of drawings

Fig. 1 is a flow chart of the actual control operation of the present invention.

Detailed ways

The control method of the present invention adapting to the remote transmission of multiple 500kV substations will be described with reference to the drawings and embodiments.

As shown in Figure 1, the control method of the present invention adapts to the remote control transmission of many 500kV substations, the method controls the multiple 500kV substations by Tianjin Electric Power Company dispatching master station and monitoring center master station, and the method includes the following steps:

Before the dispatching master station and the monitoring center master station test the remote control of a certain remote control object, the remote control terminal on the backboard of the measurement and control device where the remote control object is located is pulled out, and then the dispatching master station performs remote control transmission on the certain remote control object, The automation professionals at the 500kV substation end use the multimeter access file to test the on-off status of the remote control contacts, and verify that the remote control of the dispatching master station and monitoring center master station of Tianjin Electric Power Company is consistent and correct with the background remote control test of the 500kV substation monitoring system;

The simulated transmission structure is adopted for the circuit breakers, 500kV high-voltage reactors and main transformer gears of several 500kV substations in operation, and the actual transmission scheme is adopted for the circuit breakers in the disconnected state of the disconnector and the circuit breakers of the integrated measurement, control and protection device. Open the remote control outlet pressure plate of all the measurement and control devices in the 500kV substation, and switch the QK handle on the circuit breaker measurement and control panel and the integrated measurement, control and protection screen of the 500kV substation to the local position, so as to ensure the safe and stable operation of the power grid and avoid grid accidents and power grids. ACCIDENT;

The background machine of the monitoring system of the 500kV substation is a device for monitoring and controlling the on-duty personnel in the substation. The measurement and control device is a device for collecting factual data of the equipment in the substation. Since the measurement and control devices are all in operation and cannot be operated, a simulation test device is used. To replace the measurement and control device to complete the test;

The dispatching master station and monitoring center of Tianjin Electric Power Company respectively conduct remote control preset tests on a remote control object in a 500kV substation.

After the communication between the background machine of the monitoring system and the analog test device returns to normal, first test the remote control from the background machine, and test the on-off situation of the remote control contact with the multimeter access file; Personnel use the multimeter access file to test the on-off status of the remote control contacts, and verify the consistency and correctness of the remote control of each master station and the background remote control test.

The dispatching main station and monitoring center of Tianjin Electric Power Company respectively conduct remote control preset tests on a certain remote control object in the 500kV substation. If the remote control preset succeeds, it means that the remote control condition can be met, and if the remote control preset fails, it means that the remote control condition is not met and the remote control is refused; the 500kV substation After the automation professionals at the end check the remote control preset information displayed by the measurement and control device, which is consistent with the actual remote control preset information of the dispatching master station of Tianjin Electric Power Company and the monitoring center master station, it is proved that the unit test is correct and the remote control point test is correct.

The function of the control method adapting to the remote control transmission of multiple 500kV substations of the present invention is realized in this way:

The 500kV substation has a relatively long power-supply period for primary equipment. If the actual remote control transmission method is adopted, it will take 2-3 years to complete the test by remote control of the whole station. Obviously, this method does not meet the construction requirements of the company's "three collections and five majors" control integration. How to complete the remote control function test of six 500kV substations in a short period of time, according to different voltage levels and secondary equipment, innovatively propose three transmission schemes.

For the Banqiao substation, the substation adopts the new version of NARI Technology NSD500V measurement and control, and the measurement and control device can display the remote control preset information of the master station. The main station of Tianjin Municipal Commissioning and Monitoring Center conducts the remote control preset test on the remote control object respectively, and the station-side automation professionals check the remote control preset information displayed by the measurement and control device, and after the information is unified with the actual remote control preset information of each master station, Prove that the unit test is correct and the remote control point test is correct.

For the 500kV and 220kV equipment that has been put into operation, due to the relatively long period of power outage and transmission of equipment, if the actual remote control transmission method is used, it will take 2-3 years to complete the test by remote control of the whole station. This method does not meet the requirements of current power grid construction. This study analyzes the four substations in Wuzhuang, Binhai, Dongli, and Lutai that use NARI technology measurement and control devices. The output terminals of the remote control board of the measurement and control devices are plug-in terminals. Before the remote control object, pull out the remote control terminal on the back panel of the measurement and control device, and then the master station will carry out remote control transmission of the object. Station-side professionals use multimeter access files to test the on-off status of remote control contacts to verify the correctness of the remote control tests of each master station.

For the 500kV and 220kV equipment that has been put into operation in Beichen substation using Beijing Sifang measurement and control device, the standby device simulation test method is used: the circuit breaker measurement and control device to be driven is taken out of operation (power off or network cable is pulled out), and the monitoring system in the station appears. After the communication interruption signal, change the address of the simulated test device to the address of the device under test, and connect the network cable. After the communication between the monitoring system and the analog test device returns to normal, first test the remote control from the background machine, and use the multimeter access file to test the on-off status of the remote control contacts; then notify the monitoring center and Tianjin City to adjust the analog transmission measurement and control device, and professionals use the multimeter access file to test the remote control Contact on-off status, verify the consistency and correctness of the remote control of each master station and the background remote control test.

1. Using the test method of the remote control backplane terminal of the measurement and control device

1.1 Toray, Lutai, Wuzhuang remote transmission method:

(1) The measurement and control devices of the monitoring system of these three substations all adopt NSD500 series measurement and control devices of NARI Technology Company. The output terminal of the DOM remote control board of the NSD500 series measurement and control device is a plug-in terminal. When the Tianjin dispatching master station and the Haiguang Temple monitoring center master station test the remote control of a remote control object, pull out the remote control terminal on the back panel of the measurement and control device, and then The object is remotely transmitted by the master station. The station-side professionals use the multimeter to test the on-off status of the remote control contacts, and verify that the remote control of each master station is consistent and correct with the background remote control test.

(2) After the transmission is correct, notify the Tianjin Main Station and Monitoring Center to stop the test, and restore the remote control terminal on the back panel of the circuit breaker measurement and control device to be tested before proceeding to the next test. Once the test is successful, the main station and station-side personnel should make corresponding records, and no further testing is allowed without the permission of station-side professionals.

(3) After each interval test is completed, the remote control terminal of the device should be restored in time and installed firmly.

(4) This scheme does not need to exit the running state of the measurement and control device, and does not affect the transmission of telemetry and remote signaling.

1.2 Remote control transmission method of Binhai substation:

(1) The Binhai substation adopts NARI Technology BSJ-2200 monitoring system, and the monitoring and control devices are SLC series products, which belong to early equipment. The system does not have the function of remote control preset, and at the same time, it cannot use the backup measurement and control device for simulation test.

(2) The remote control output terminal on the back panel of the SLC series measurement and control device is a plug-in terminal. out, and then the master station performs remote transmission on the object. The station-side professionals use the multimeter to test the on-off status of the remote control contacts, and verify that the remote control of each master station is consistent and correct with the background remote control test.

(3) After the transmission is correct, notify the Tianjin Main Station and Monitoring Center to stop the test, and restore the remote control terminal on the back panel of the circuit breaker measurement and control device to be tested before proceeding to the next test. Once the test is successful, the main station and station-side personnel should make corresponding records, and no further testing is allowed without the permission of station-side professionals.

(4) After each interval test is completed, the remote control terminal of the device should be restored in time and installed firmly.

(5) This scheme does not need to exit the running state of the measurement and control device, and does not affect the transmission of telemetry and remote signaling.

2. Using analog measurement and control device test method

2.1 Beijiao station remote control drive method:

The monitoring system of Beichen substation is Beijing Sifang CSC2000 system, and the CSI-200E measurement and control device does not have remote information display and query functions.

(1) Take the circuit breaker measurement and control device to be driven out of operation (power off or unplug the network cable), and after the monitoring system in the station shows the measurement and control communication interruption signal, change the address of the simulation test device to the address of the device to be tested, and connect the network cable.

(2) After each measurement and control device is returned, the North China Network Commissioner, Tianjin Municipal Commissioner, and Beichen Station will temporarily not be able to monitor the telemetry and remote signaling sent by the measurement and control device. It is estimated that the return time of each measurement and control device will be about 30 minutes . The North China network survey and the main survey station in Tianjin need to perform technical processing on the corresponding important data to prevent telemetry and remote signaling data from returning to zero.

(3) After the communication between the monitoring system and the simulation test device returns to normal, first test the remote control from the background machine, and test the on-off status of the remote control contacts with the multimeter access file; Test the on-off status of the remote control contacts with the multimeter access file, and verify that the remote control of each master station is consistent and correct with the background remote control test.

(4) After the transmission is correct, the monitoring center and the Tianjin main station should be notified to stop the test, the communication of the simulation device should be disconnected, and the operation status of the measurement and control device of the circuit breaker to be tested should be restored before the next test can be carried out.

(5) Actual remote control of the spare interval in the station.

3. Use the test method of checking the remote control preset information of the measurement and control device

3.1 Remote control transmission method of Banqiao station:

(1) The measurement and control device of the monitoring system of this station adopts the NSD500 series measurement and control device of NARI Technology Company. The software version of the measurement and control device in this station is V3.49, which has the functions of remote control preset, execution information display and query.

(2) The remote control preset test requires Tianjin Dispatching Master Station and Haiguang Temple Monitoring Center to conduct remote control preset tests on the same remote control object successively; After the information preset by the remote control is consistent and correct, it proves that the unit test is correct and the remote control point test is correct.

(3) The monitoring system of Banqiao station is NARI NS2000 monitoring system. The station-side monitoring has a remote preset function, which can compare the preset information of each main station with the station-side preset information to increase the basis for judgment.

Claims (3)

1. A control method adapting to many 500kV substation remote control transmissions, the method controls many 500kV substations by the dispatching master station of Tianjin Electric Power Company and the monitoring center master station, the method includes the following steps: Before the dispatching master station and the monitoring center master station test the remote control of a certain remote control object, the remote control terminal on the backboard of the measurement and control device where the remote control object is located is pulled out, and then the dispatching master station performs remote control transmission on the certain remote control object, The automation professionals at the 500kV substation end use the multimeter access file to test the on-off status of the remote control contacts, and verify that the remote control of the dispatching master station and monitoring center master station of Tianjin Electric Power Company is consistent and correct with the background remote control test of the 500kV substation monitoring system; The simulated transmission structure is adopted for the circuit breakers, 500kV high-voltage reactors and main transformer gears of several 500kV substations in operation, and the actual transmission scheme is adopted for the circuit breakers in the disconnected state of the disconnector and the circuit breakers of the integrated measurement, control and protection device. Open the remote control outlet pressure plate of all the measurement and control devices in the 500kV substation, and switch the QK handle on the circuit breaker measurement and control panel and the integrated measurement, control and protection screen of the 500kV substation to the local position, so as to ensure the safe and stable operation of the power grid and avoid grid accidents; The background machine of the monitoring system of the 500kV substation is a device for monitoring and controlling the on-duty personnel in the substation. The measurement and control device is a device for collecting factual data of the equipment in the substation. Since the measurement and control devices are all in operation and cannot be operated, a simulation test device is used. To replace the measurement and control device to complete the test; The dispatching master station and monitoring center of Tianjin Electric Power Company respectively conduct remote control preset tests on a remote control object in a 500kV substation. 2. The structure adapting to the remote control transmission of multiple 500kV substations according to claim 1 is characterized in that: after the communication returns to normal, the monitoring system background machine and the simulation test device of the 500kV substation first test the remote control from the background machine, and use Test the on-off status of the remote control contacts with the access file of the multimeter; then notify the dispatcher of Tianjin Electric Power Company to dispatch the master station and the analog transmission measurement and control device in the monitoring center. Test for consistency and correctness. 3. The structure adapting to the remote control transmission of multiple 500kV substations according to claim 1, characterized in that: the dispatching master station and the monitoring center of Tianjin Electric Power Company respectively carry out a remote control preset test on a certain remote control object in a 500kV substation, and the remote control preset Success indicates that remote control is possible if the remote control condition is met, and remote control preset failure indicates that remote control is rejected if the remote control condition is not met; the automation professionals at the 500kV substation end will check the remote control preset information displayed by the measurement and control device, and communicate with the dispatching master station and monitoring center of Tianjin Electric Power Company for actual remote control After the preset information is consistent and correct, it proves that the unit test is correct and the remote control point test is correct.