CN109058769B - Transformer oil leakage online monitoring and emergency treatment system and method - Google Patents

Abstract

The invention discloses an online monitoring and emergency treatment system and method for transformer oil leakage, and relates to the field of transformer monitoring. At present, an on-line monitoring and emergency treatment system for oil leakage is not available so as to monitor whether transformer oil leaks or not at all. The invention comprises a transformer oil drain tank, an oil drain pipeline, an accident oil tank, an oil leakage sensor, a rain drain ditch, a cable ditch, a communication module, a monitoring system, a control unit, an emergency treatment device and a rain drain ditch valve, wherein the transformer oil drain tank and the accident oil tank are connected through the oil drain pipeline, the oil leakage sensor is respectively arranged in the transformer oil drain tank, the accident oil tank, the rain drain ditch and the cable ditch, the communication module is connected with the oil leakage sensor and the monitoring system, the control unit is respectively connected with the monitoring system and the emergency treatment device, and the rain drain ditch valve is arranged in the rain drain ditch to prevent the leaked transformer oil from flowing out of a transformer oil station. The technical scheme has simple structure and reliable operation, and can accurately obtain the leakage degree and speed of the transformer oil.

Description

A transformer oil leakage online monitoring and emergency treatment system and method

Technical field

The invention relates to the field of transformer monitoring, and in particular to an online monitoring and emergency treatment system for transformer oil leakage.

Background technique

Substations are an important part of the power grid. The main transformers in high-voltage substations are large in size and mostly oil-filled equipment. Especially in ultra-high voltage and ultra-high voltage AC substations, the main transformers can weigh hundreds of tons and contain a lot of oil. It is more than tens of tons.

Due to factors such as short circuit and overload of the transformer, the operating temperature will be too high, the oil temperature will rise, and oil leakage will easily occur. The reasons for oil leakage include the oil drain valve not being closed tightly, the casing and the conductive rod not matching or the gasket sealing not being tight, and the connection parts of various materials not being tight. Oil leakage usually occurs at various connections of the transformer. Due to the large size of the transformer, slight oil leakage is sometimes difficult to detect in time. It is usually not discovered by inspection personnel until the oil leakage reaches a certain extent and is filled with dust. Because oil leakage is not discovered in time, equipment defects cannot be discovered in time, which can easily cause hidden dangers.

Usually, there is an oil drain pool connected under the transformer, which is connected to the accident oil pool through a special oil drain pipeline. When an accident occurs, such as oil injection or explosion, the oil from the transformer will drain into the oil drain pool, and then flow to the accident oil pool. The accident oil The function of the pool is to prevent oil leakage from causing fires and other accidents. If a serious failure such as an explosion of the transformer causes oil to leak out of the oil drain pool, such as cable trenches or rainwater ditches, the oil will flow out of the substation along with the rainwater pipes and flow into the rivers through the ditches, causing serious water pollution and serious environmental problems. .

Currently, there is no online monitoring and emergency response system for oil leakage that can monitor whether the transformer oil is leaking at all times and prevent the transformer oil from leaking into ditches outside the substation, ensuring that oil leakage pollution is minimized.

Contents of the invention

The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existing technical solutions and provide an online monitoring and emergency treatment system for transformer oil leakage to achieve the purpose of reducing oil pollution. To this end, the present invention adopts the following technical solutions.

A transformer oil leakage online monitoring and emergency treatment system, including a transformer oil leakage pool, an oil discharge pipeline, an accident oil pool, an oil leakage sensor, a rainwater ditch, a cable ditch, a communication module, a monitoring system, a control unit, an emergency treatment device and rainwater Ditch valve, the transformer oil drain pool and the accident oil pool are connected through an oil drain pipeline, and there are multiple oil leakage sensors, which are respectively located in the transformer oil drain pool, accident oil pool, rainwater ditch and cable ditch. , the communication module is connected to the oil leakage sensor and the monitoring system, the control unit is connected to the monitoring system and the emergency treatment device respectively, and the rainwater gutter valve is installed in the rainwater gutter to prevent leakage of transformer oil. Flow outside the station.

As a preferred technical means: the monitoring system is provided with an alarm device, and the alarm device is a sound horn.

As a preferred technical means: at least two oil leakage sensors are installed in the rainwater ditch and cable ditch. to improve detection accuracy.

As a preferred technical means: the oil leakage sensors provided in the rainwater ditch and cable ditch are equally spaced. In order to obtain the situation of oil leakage and the rate of oil leakage, accurate information can be obtained.

As a preferred technical means: the emergency treatment device is equipped with an oil-absorbing blanket.

As a preferred technical means: the emergency treatment device is equipped with activated carbon.

The communication module is a wireless communication module. Facilitate data transmission.

Another object of the present invention is to provide an online monitoring and emergency treatment method for transformer oil leakage, which includes the following steps:

1) The oil leakage sensor detects oil in transformer drain pools, accident oil pools, rain gutters and cable trenches;

2) The monitoring system monitors the transmission information of the oil leakage sensor;

201) If only the oil leakage sensor in the transformer oil leakage pool transmits the oil leakage signal to the monitoring system through the communication module, it is considered a minor oil leakage; the monitoring system issues an alarm message to inform the transformer of oil leakage, ensuring that the staff can respond immediately Perform maintenance on fuel tanks;

202) If the oil leakage sensor located in the oil leakage pool, the oil leakage sensor located in the oil pipeline between the oil leakage pool and the accident oil pool, and the oil leakage sensor in the accident oil pool successively transmit the oil leakage signal to the monitoring system through the communication module, It is considered that an accident occurred in the transformer, and the monitoring system sends an alarm message to inform that the leaked oil has flowed into the accident oil pool;

203) If the oil leakage sensor located in the cable trench and rainwater ditch transmits the oil leakage signal to the monitoring system through the communication module, it will be considered that the transformer oil leakage is serious, and the monitoring system will issue an alarm and transmit the information to the control unit;

3) When the control unit obtains the information from the monitoring system, the control unit activates the emergency treatment device, which closes the rainwater ditch valve to prevent the transformer oil from leaking into the ditch outside the substation, ensuring that oil leakage pollution is minimized.

As the preferred technical means: the control unit activates the emergency treatment device, which releases the oil-absorbing blanket and closes the rainwater gutter valve.

As the preferred technical means: the control unit starts the emergency treatment device. After the emergency treatment device releases the oil-absorbing blanket, it releases activated carbon and closes the rainwater gutter valve. It can effectively prevent hydraulic oil from leaking outside the station.

Beneficial effects:

1. This technical solution has a simple structure and reliable operation, and can accurately obtain the leakage degree and speed of transformer oil.

2. Transformer oil leakage can be discovered without manual inspection, and an alarm can be issued promptly to notify staff to take measures.

3. Prevent transformer oil from leaking into ditches outside the substation to ensure that oil leakage pollution is minimized.

4. Relevant signals are transmitted wirelessly, which is simple and convenient. There is no need to lay out lines. It is more flexible and requires less capital investment.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

In the picture: 1-Transformer oil drain pool; 2-Accident oil pool; 3-Oil leakage sensor; 4-Rainwater ditch; 5-Monitoring system; 6-Wireless communication module; 7-Control unit; 8-Emergency treatment module; 9 -Rainwater gutter valve; 10-cable trench; 11-oil drainage pipe; 12-substation.

Detailed ways

The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

As shown in Figure 1, a transformer oil leakage online monitoring and emergency treatment system includes a transformer oil leakage pool 1, an oil discharge pipeline 11, an accident oil pool 2, an oil leakage sensor 3, a rainwater ditch 4, a cable ditch 10, and wireless communication. Module 6, monitoring system 5, control unit 7, emergency treatment device 8 and rainwater gutter valve 9. Transformer drain pool 1 and accident oil pool 2 are connected through oil drain pipeline 11. Oil leak sensor 3 is located in transformer drain pool 1, In the accident oil pool 2, rainwater ditch 4 and cable ditch 10, the wireless communication module 6 is connected to the oil leakage sensor 4 and the monitoring system 5 through signal lines. The control unit 7 is connected to the monitoring system 5 and the emergency treatment device 8 respectively. The rainwater ditch valve 9 is located in the rainwater ditch 4. The monitoring system is equipped with an alarm device. The emergency treatment device 8 is provided with an oil-absorbing blanket or activated carbon.

When the transformer oil leakage online monitoring and emergency treatment system set up above is working, if there is a slight oil leakage, when oil leaks from the transformer and is discharged to the oil leakage pool 1, the oil leakage sensor 4 in the transformer oil leakage pool 1 will leak oil. The signal is transmitted to the wireless communication module 6, and the wireless communication module 6 transmits the information to the monitoring system 5. The monitoring system 5 sends an alarm message to inform the transformer oil of leakage, ensuring that the staff can repair the oil tank as soon as possible.

If an accident occurs, such as oil injection or explosion, a large amount of transformer oil leaks. The transformer oil will leak into the oil drain pool 1, and then flow to the accident oil pool 2. Along the way, the oil will leak into the oil drain pool 1 and the accident oil pool 2. The oil leak sensor 3 will receive signals one after another and transmit the oil leak signal to the wireless communication module 6. The wireless communication module 6 will transmit the information to the monitoring system 5. The monitoring system 5 will issue an alarm message to inform that the leaked oil has flowed into the accident oil pool. .

If the transformer oil leakage is serious, the oil drain pool is blocked or the oil spurts out to the nearby ground, or the transformer explodes or other serious faults occur, causing the oil to leak outside the oil drain pool 1, such as the cable trench 10, the rainwater trench 4, the cable trench 10 The oil leakage sensor 4 in the rain gutter 4 transmits the oil leakage signal to the wireless communication module 6. The wireless communication module 6 transmits the information to the monitoring system 5. The monitoring system 5 issues an alarm and transmits the information to the control unit 7. The control unit 7. Start the emergency treatment device 8. The emergency treatment device 8 closes the rainwater ditch valve 9 to prevent the transformer oil from leaking into the ditch outside the substation 12 and ensure that the oil leakage pollution is minimized. It not only ensures the safety and stable operation of the transformer, but also saves costs and can be remotely monitored.

In order to attract workers' attention, the monitoring system is equipped with an alarm device, which is a sounding horn.

In order to improve the accuracy of detection, at least two oil leakage sensors are installed in rain gutters and cable trenches. Oil leakage sensors installed in rain gutters and cable trenches are equally spaced.

In order to effectively prevent the transformer oil from flowing outside the substation 12 and polluting the environment, an oil-absorbing blanket is provided in the emergency treatment device. The control unit 7 activates the emergency treatment device 8, which releases the oil-absorbing blanket and closes the rainwater gutter valve 9.

Of course, activated carbon can also be used. The emergency treatment device is equipped with activated carbon. The control unit 7 activates the emergency treatment device 8. The emergency treatment device 8 releases the activated carbon and closes the rainwater gutter valve 9.

Alternatively, in addition to the oil-absorbing blanket, the emergency treatment device can also be equipped with activated carbon.

The transformer oil leakage online monitoring, emergency treatment system and method shown in Figure 1 above are specific embodiments of the present invention, which have reflected the substantive features and progress of the present invention. According to the actual use needs, the enlightenment of the present invention Below, any equivalent modifications to its shape, structure, etc. are within the scope of protection of this plan.

Claims (8)

1. An online monitoring and emergency treatment system for transformer oil leakage, which is characterized by: including a transformer oil leakage pool, an oil discharge pipeline, an accident oil pool, an oil leakage sensor, a rainwater ditch, a cable ditch, a communication module, a monitoring system, and a control unit. , emergency treatment device and rainwater gutter valve, the transformer oil leakage pool and the accident oil pool are connected through an oil drainage pipeline, there are multiple oil leakage sensors, respectively located in the transformer oil leakage pool, accident oil pool, In the rain gutter and cable trench, the communication module is connected to the oil leakage sensor and the monitoring system, the control unit is connected to the monitoring system and the emergency treatment device respectively, and the rain gutter valve is located in the rain gutter. To prevent leaked transformer oil from flowing outside the station; When the transformer oil leakage online monitoring and emergency treatment system is working, if there is a slight oil leakage, when oil leaks from the transformer and is discharged to the oil drain pool, the oil leakage sensor in the transformer oil leakage pool will transmit the oil leakage signal to the wireless communication module. The communication module transmits the information to the monitoring system, and the monitoring system issues an alarm message to notify the transformer of oil leakage, ensuring that staff can repair the oil tank as soon as possible; If an accident occurs, including oil injection or explosion, and a lot of transformer oil leaks, the transformer oil will leak into the oil drain pool and then flow to the accident oil pool. The oil leakage sensors in the oil drain pool and the accident oil pool along the way will successively receive signal, transmit the oil leak signal to the wireless communication module, the wireless communication module transmits the information to the monitoring system, and the monitoring system sends an alarm message to inform that the leaked oil has flowed into the accident oil pool; If the transformer oil leaks seriously, the oil drain pool is blocked or the oil spurts out to the nearby ground, or there is a serious failure including the explosion of the transformer, causing the oil to leak out of the oil drain pool, into cable trenches, rainwater gutters, and cable trenches and rainwater gutters. The oil leak sensor transmits the oil leak signal to the wireless communication module, and the wireless communication module transmits the information to the monitoring system. The monitoring system issues an alarm and transmits the information to the control unit. The control unit activates the emergency treatment device, and the emergency treatment device closes the rainwater gutter valve. , prevent transformer oil from leaking into ditches outside the substation, ensuring that oil leakage pollution is minimized; ensuring the safety and stable operation of the transformer, and saving costs, with remote monitoring; The oil leakage sensors provided in the rain gutters and cable trenches are equally spaced; The emergency treatment device is equipped with an oil-absorbing blanket. 2. A transformer oil leakage online monitoring and emergency treatment system according to claim 1, characterized in that: the monitoring system is equipped with an alarm device, and the alarm device is a sound horn. 3. A transformer oil leakage online monitoring and emergency treatment system according to claim 1, characterized in that at least two oil leakage sensors are provided in the rainwater ditch and cable ditch. 4. A transformer oil leakage online monitoring and emergency treatment system according to claim 1, characterized in that: the emergency treatment device is equipped with activated carbon. 5. A transformer oil leakage online monitoring and emergency treatment system according to claim 4, characterized in that: the communication module is a wireless communication module. 6. A transformer oil leakage online monitoring and emergency treatment method using a transformer oil leakage online monitoring and emergency treatment system according to any one of claims 1 to 5, which is characterized in that it includes the steps: 1) The oil leakage sensor detects oil in transformer drain pools, accident oil pools, rain gutters and cable trenches; 2) The monitoring system monitors the transmission information of the oil leakage sensor; 201) If only the oil leakage sensor in the transformer oil leakage pool transmits the oil leakage signal to the monitoring system through the communication module, it is considered a minor oil leakage; the monitoring system issues an alarm message to inform the transformer of oil leakage, ensuring that the staff can respond immediately Perform maintenance on fuel tanks; 202) If the oil leakage sensor located in the oil leakage pool, the oil leakage sensor located in the oil pipeline between the oil leakage pool and the accident oil pool, and the oil leakage sensor in the accident oil pool successively transmit the oil leakage signal to the monitoring system through the communication module, It is considered that an accident occurred in the transformer, and the monitoring system sends an alarm message to inform that the leaked oil has flowed into the accident oil pool; 203) If the oil leakage sensor located in the cable trench and rainwater ditch transmits the oil leakage signal to the monitoring system through the communication module, it will be considered that the transformer oil leakage is serious, and the monitoring system will issue an alarm and transmit the information to the control unit; 3) When the control unit obtains the information from the monitoring system, the control unit activates the emergency treatment device, which closes the rainwater ditch valve to prevent the transformer oil from leaking into the ditch outside the substation, ensuring that oil leakage pollution is minimized. 7. An online monitoring and emergency treatment method for transformer oil leakage according to claim 6, characterized in that: the control unit activates the emergency treatment device, and the emergency treatment device releases the oil-absorbing blanket and closes the rainwater gutter valve. 8. A transformer oil leakage online monitoring and emergency treatment method according to claim 7, characterized in that: the control unit starts the emergency treatment device, and after the emergency treatment device releases the oil-absorbing blanket, it releases activated carbon and closes the rainwater gutter valve.