阅读说明：本技术 环网柜故障监视操控装置 (Ring network cabinet fault monitoring control device ) 是由 罗景华 程晓弘 于 2019-08-27 设计创作，主要内容包括：本发明涉及风电控制领域,公开一种环网柜故障监视操控装置,包括第一控制电源、第二控制电源、微机保护装置、低SF6气压监视信号回路、环网柜SF6气压低监视信号回路、环网柜故障监视信号回路、及环网柜故障监视回路,本发明的环网柜故障监视操控装置,由低SF6气压信号接点、环网柜故障信号接点、及保护装置电源空气开关组成环网柜故障监视回路；通过环网柜重载连接器X1的端口-420-08-X1.15、-420-08-X1.19与风机控制屏重载连接器X1’的端口-420-02-X1.15、-420-02-X1.19对应相连接,组成风机控制屏对环网柜故障监视回路,从而能够将相关信号同时传输到微机保护装置和风机控制屏,增强了风电系统的可靠性,有效减少误操作事故的发生。(The present invention relates to wind-powered electricity generation control fields; a kind of ring network cabinet fault monitoring control device is disclosed; including the first control power supply, the second control power supply, microcomputer protecting device, low SF6 air pressure monitoring signal circuit, the low monitoring signal circuit of ring network cabinet SF6 air pressure, ring network cabinet fault monitoring signal circuit and ring network cabinet fault monitoring circuit; ring network cabinet fault monitoring control device of the invention forms ring network cabinet fault monitoring circuit by low SF6 air pressure signal contact, ring network cabinet fault-signal contact and protective device power supply air switch；It is connected by the way that port-the 420-08-X1.15, -420-08-X1.19 of ring network cabinet heavy-duty connector X1 are corresponding with port-the 420-02-X1.15, -420-02-X1.19 of air-blower control screen heavy-duty connector X1 '; air-blower control screen is formed to ring network cabinet fault monitoring circuit; so as to by coherent signal simultaneous transmission to microcomputer protecting device and air-blower control screen; the reliability of wind power system is enhanced, the generation of misoperation fault is effectively reduced.)

1. a kind of ring network cabinet fault monitoring control device, it is characterised in that: including

First control power supply and the second control power supply, the positive electrode and negative electrode of the first control power supply are respectively connected with power supply air switch 2DK；

Microcomputer protecting device (1n), including working power port 1D3,1D4, On-off signal port 3D20,3D13, switching value are defeated Exit port 2D7,2D8, working power port 1D3,1D4 are connected to the power supply air switch 2DK of the first control both ends of power；

Low SF6 air pressure monitors signal circuit, including low pressure sensing switch P and relay K2, low pressure sensing switch P's One end is connected to the anode of the second control power supply, and the other end is connected to one end of the coil of relay K2, the coil of relay K2 The other end be connected to the cathode of the second control power supply；

The low monitoring signal circuit of ring network cabinet SF6 air pressure, the normally opened contact K2-1 including relay K2, the normally opened contact of relay K2 One end of K2-1 is connected to the power supply air switch 2DK of the first control positive pole, and the other end passes through microcomputer protecting device (1n) Port 3D20,3D13 be connected to the power supply air switch 2DK of the first control power cathode；

Ring network cabinet fault monitoring signal circuit, including relay K8, the coil of relay K8 and opening for microcomputer protecting device (1n) Amount output port 2D7,2D8 are serially connected for pass, and port 2D7 is connected to the anode of the second control power supply, the coil of relay K8 The other end is connected to the cathode of the second control power supply；

Ring network cabinet fault monitoring circuit, including ring network cabinet heavy-duty connector X1, air-blower control screen heavy-duty connector X1 ', successively go here and there The auxiliary switch of the normally-closed contact K2-2 of the relay K2 of connection, the normally-closed contact K8-1 of relay K8 and power supply air switch 2DK Contact 2DK-1, the other end of auxiliary switch contact 2DK-1 are connected to the port -420-08- of ring network cabinet heavy-duty connector X1 X1.15, the other end of normally-closed contact K2-2 are connected to the port -420-08-X1.19 of ring network cabinet heavy-duty connector X1；Ring network cabinet Port-the 420-08-X1.15, -420-08-X1.19 of heavy-duty connector X1 and the port-of air-blower control screen heavy-duty connector X1 ' 420-02-X1.15, -420-02-X1.19 is correspondingly connected with；Port-the 420-02-X1.15 of air-blower control screen heavy-duty connector X1 ' It is connected with indicating unit (2).

2. ring network cabinet fault monitoring control device according to claim 1, it is characterised in that: indicating unit (2) includes referring to Show element and power supply, one end of indicator elment is connected to the anode of power supply, and the other end is connected to air-blower control screen weight Carry the port -420-02-X1.15 of connector X1 ', the port -420-02-X1.19 connection of air-blower control screen heavy-duty connector X1 ' In the cathode of power supply.

3. ring network cabinet fault monitoring control device according to claim 2, it is characterised in that: indicator elment is indicator light LD。

4. ring network cabinet fault monitoring control device according to claim 1 or 2 or 3, it is characterised in that: low pressure sensor Switch P is set in the gas chamber of sulfur hexafluoride breaker, when low pressure sensing switch P detects sulfur hexafluoride breaker gas chamber When interior atmospheric pressure value is too low, the coil of control relay K2 obtains electric actuation, to control the normally opened contact K2-1 of relay K2 Closure, microcomputer protecting device (1n) exports SF6 air pressure low signal by port 2D7,2D8, while microcomputer protecting device (1n) is remembered It records and shows the low event of SF6 air pressure.

5. ring network cabinet fault monitoring control device according to claim 4, it is characterised in that: on microcomputer protecting device (1n) It is connected with control module (3), wireless transmitter module (4) is connected in control module (3)；Further include and wireless transmitter module (4) The wireless receiving module (5) of data exchange is carried out, is connected with director server (6) on wireless receiving module (5), director server (6) On be connected with more local devices (7)；Control module (3) is used to transfer the SF6 air pressure recorded in microcomputer protecting device (1n) low File data corresponding to event, and the data are sent to wireless receiving module (5) by wireless transmitter module (4), wirelessly Received data are uploaded to director server (6) and stored by receiving module (5), and local device (7) is for transferring director server (6) in store data and the low event of the corresponding SF6 air pressure of data is shown.

6. ring network cabinet fault monitoring control device according to claim 5, it is characterised in that: control module (3) will be transferred The file data of the low event of SF6 air pressure be ranked up according to the time point that the low event of SF6 air pressure occurs, and preferentially by time point File data corresponding to the forward low event of SF6 air pressure is sent to wireless receiving module (5) by wireless transmitter module (4).

Technical field

The present invention relates to wind-powered electricity generation control field more particularly to ring network cabinet fault monitoring control devices.

Background technique

In wind power generation field, traditional wind-power electricity generation is outside every Fans tower with a box boosting of 35KV Become, the 0.69KV electric energy that blower is issued is become by the box boosting outside tower, first boosts to 35KV, then through collection electric line confluence Afterwards, wind power plant 110KV or 220KV booster stations are linked into, national mains network is imported after secondary booster.

The 0.69KV electric energy that above boosting mode needs blower to issue passes through up to the low of rice up to a hundred or even hundreds of meters Voltage cable send the 35KV boosting to tens of meters of distant places outside tower to become.Fan capacity develops to current 8MW, tower from 1.6MW Height is also increased to 100 more to 200 meters or so from tens of rice, with incrementally increasing for installed capacity, conveys electric current from 1339 Ampere is increased to 6694 amperes.It is well known that line loss and electric current is square directly proportional, it is directly proportional to the resistance of cable.Cause This, line loss is increased considerably also with the increase of fan capacity and the increase of cable length, leads to the method for operation very not It is economical.

Currently, a kind of new development trend is step-up transformer to be directly installed on nearby by the generator of tower top, Ring network cabinet is attached to middle part or bottom in tower.The 0.69KV electric energy that blower issues is boosted to 35KV, 1.6MW by transformer nearby Blower conveying electric current to 8MW also drops to 26~132 amperes from 1339~6694 amperes.The high voltage electric energy of 35KV is transferred to tower The electric energy of 35KV, is transmitted to wind power plant 110KV or 220KV booster stations again after ring network cabinet is converged, through two by the ring network cabinet in cylinder National mains network is imported after secondary boosting.Good energy-saving effect is played in this way.Wherein, ring network cabinet is as connection wind-power electricity generation The intermediary electrical equipment of machine and electric system, built in high-tension switch gear can shield, as electric system occur When failure, the connection between wind-driven generator and electric system can be cut off, safety accident is avoided；Such as Publication No. The utility model patent of CN202454900U is exactly a kind of similar ring network cabinet.

On the other hand, as shown in Figure 1, optimizing the control loop and signal circuit inside blower and ring network cabinet.By perfect Protection system passes through the state and control signal of blower and reaches ring network cabinet under air-blower control screen, while the correlation of ring network cabinet Signal uploads to air-blower control screen, realizes that blower and ring network cabinet in mutual linking electrically, improve air-blower control and looped network Harmony, interoperability and the reliability of cabinet control system.In another aspect, the power consumption of control system is big after optimizing design scheme Big to reduce, power supply is changed to 24V direct current supply by 220V or 110V, fully meets control operation and requires.Under normal conditions, ring network cabinet It is built-in with microcomputer protecting device, it is interrelated with the control device built in ring network cabinet, it can be realized ring network cabinet internal power system The protection and observing and controlling of voltage and current in system.

However in actual application, it happens occasionally for the misoperation fault of control device, there are larger safety is hidden Suffer from, therefore there is also certain rooms for improvement.

Summary of the invention

The present invention in view of the shortcomings of the prior art, provides a kind of ring network cabinet fault monitoring control device, in control device Middle increase ring network cabinet fault monitoring circuit enhances coherent signal simultaneous transmission to microcomputer protecting device and air-blower control screen The reliability of wind power system effectively reduces the generation of misoperation fault.

In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:

A kind of ring network cabinet fault monitoring control device, including

First control power supply and the second control power supply, the positive electrode and negative electrode of the first control power supply are respectively connected with power supply air and open Close 2DK；

Microcomputer protecting device, including working power port 1D3,1D4, On-off signal port 3D20,3D13, switching value are defeated Exit port 2D7,2D8, working power port 1D3,1D4 are connected to the power supply air switch 2DK of the first control both ends of power；

Low SF6 air pressure monitors that signal circuit, including low pressure sensing switch P and relay K2, low pressure sensor are opened The one end for closing P is connected to the anode of the second control power supply, and the other end is connected to one end of the coil of relay K2, relay K2's The other end of coil is connected to the cathode of the second control power supply；

The low monitoring signal circuit of ring network cabinet SF6 air pressure, the normally opened contact K2-1 including relay K2, relay K2's is normally opened One end of contact K2-1 is connected to the power supply air switch 2DK of the first control positive pole, and the other end passes through microcomputer protecting device Port 3D20,3D13 be connected to the power supply air switch 2DK of the first control power cathode；

Ring network cabinet fault monitoring signal circuit, including relay K8, the coil of relay K8 and opening for microcomputer protecting device Amount output port 2D7,2D8 are serially connected for pass, and port 2D7 is connected to the anode of the second control power supply, the coil of relay K8 The other end is connected to the cathode of the second control power supply；

Ring network cabinet fault monitoring circuit, including ring network cabinet heavy-duty connector X1, air-blower control screen heavy-duty connector X1 ', according to The auxiliary of the normally-closed contact K2-2 of secondary concatenated relay K2, the normally-closed contact K8-1 of relay K8 and power supply air switch 2DK Switch contact 2DK-1, the other end of auxiliary switch contact 2DK-1 are connected to the port -420-08- of ring network cabinet heavy-duty connector X1 X1.15, the other end of normally-closed contact K2-2 are connected to the port -420-08-X1.19 of ring network cabinet heavy-duty connector X1；Ring network cabinet Port-the 420-08-X1.15, -420-08-X1.19 of heavy-duty connector X1 and the port-of air-blower control screen heavy-duty connector X1 ' 420-02-X1.15, -420-02-X1.19 is correspondingly connected with；Port-the 420-02-X1.15 of air-blower control screen heavy-duty connector X1 ' It is connected with indicating unit.

Using the above scheme, it is connected in series by low pressure sensing switch P and relay K2, is connected to 24V second and controls electricity The both ends of the power supply air switch 1DK in source constitute low SF6 air pressure monitoring signal circuit；By the normally opened contact K2- of relay K2 1 be connected in series with port 3D20,3D13 of microcomputer protecting device, is connected to the power supply air switch 2DK that 24V first controls power supply Both ends, for judging that SF6 air pressure is low；Then by port 2D7,2D8 of microcomputer protecting device export SF6 air pressure low signal to after Electric appliance K8, while recording and showing the low event of SF6 air pressure, to form the low monitoring signal circuit of ring network cabinet SF6 air pressure；It is protected by microcomputer Port 2D7,2D8 and relay K8 of protection unit are connected in series, and are connected to the power supply air switch 1DK's of the control power supply of 24V second Both ends form ring network cabinet fault monitoring signal circuit；By low SF6 air pressure signal contact (the normally-closed contact K2-2 of relay K2), (power supply air is opened for ring network cabinet fault-signal contact (the normally-closed contact K8-1 of relay K8) and protective device power supply air switch Close the auxiliary switch contact 2DK-1 of 2DK) composition ring network cabinet fault monitoring circuit；Pass through the port-of ring network cabinet heavy-duty connector X1 Port-the 420-02-X1.15, -420- of 420-08-X1.15, -420-08-X1.19 and air-blower control screen heavy-duty connector X1 ' 02-X1.19 correspondence is connected, composition air-blower control screen to ring network cabinet fault monitoring circuit, so as to by coherent signal simultaneously It is transferred to microcomputer protecting device and air-blower control screen, enhances the reliability of wind power system, effectively reduces the hair of misoperation fault It is raw.

Preferably, indicating unit includes indicator elment and power supply, one end of indicator elment is connected to power supply Anode, the other end is connected to the port -420-02-X1.15 of air-blower control screen heavy-duty connector X1 ', air-blower control screen heavy duty Port-the 420-02-X1.19 of connector X1 ' is connected to the cathode of power supply.

Using the above scheme, power supply can provide electricity for the operation in indicator elment and ring network cabinet fault monitoring circuit Can, when the electronic component in ring network cabinet fault monitoring circuit makes corresponding actions, indicator elment can be in the work of power supply With lower switching indicating mode.

Preferably, indicator elment is indicator light LD.

Using the above scheme, the light prompt effect of indicator light is not only eye-catching, and will not bother surrounding during the work time Environment, it is more humanized.

Preferably, low pressure sensing switch P is set in the gas chamber of sulfur hexafluoride breaker, when low pressure sensor When switch P detects that the indoor atmospheric pressure value of sulfur hexafluoride breaker gas is too low, the coil of control relay K2 obtains electric actuation, from And the normally opened contact K2-1 closure of relay K2 is controlled, microcomputer protecting device exports the low letter of SF6 air pressure by port 2D7,2D8 Number, while microcomputer protecting device records and shows the low event of SF6 air pressure.

Using the above scheme, when the indoor SF6 atmospheric pressure value of sulfur hexafluoride breaker gas is too low, illustrate the indoor SF6 of gas Gas is revealed, and microcomputer protecting device can automatically record the specific time of origin point of the low event of SF6 air pressure at this time, for Staff, which transfers, to be checked and analyzes data.

Preferably, being connected with control module on microcomputer protecting device, wireless transmitter module is connected in control module；Also Including the wireless receiving module with wireless transmitter module progress data exchange, it is connected with director server on wireless receiving module, always More local devices are connected on server；Control module is used to transfer the low event of SF6 air pressure recorded in microcomputer protecting device Corresponding file data, and the data are sent to wireless receiving module by wireless transmitter module, wireless receiving module will Received data are uploaded to director server and are stored, and local device is used to transfer the data stored in director server and by data The low event of corresponding SF6 air pressure is shown.

Using the above scheme, record storage is enabled to pass through in the data of the low event of SF6 air pressure on microcomputer protecting device Wireless way for transmitting is transferred the data in director server by local device and is checked to director server, allows a user to The low event of SF6 air pressure stored in microcomputer protecting device is enough accessed, it is more convenient.

Preferably, the file data for the low event of SF6 air pressure transferred occurs control module according to the low event of SF6 air pressure Time point be ranked up, and preferentially by file data corresponding to the time point forward low event of SF6 air pressure by wirelessly sending out It penetrates module and is sent to wireless receiving module.

Using the above scheme, due to the limited storage space in microcomputer protecting device, certain amount of SF6 can only be stored The low event data of air pressure can successively cover forward data, cause data complete if typing quantity is more than load quantity It preserves；Preferentially file data corresponding to the time point forward low event of SF6 air pressure is carried out by control module wireless It sends, can effectively save the forward data of time-sequencing in microcomputer protecting device and be effectively reduced during wireless transmission Volume of transmitted data reduce transmission power consumption to promote efficiency of transmission, it is more humanized.

The present invention due to use above technical scheme, have significant technical effect: by low pressure sensing switch P with Relay K2 is connected in series, and is connected to the both ends that 24V second controls the power supply air switch 1DK of power supply, constitutes low SF6 air pressure prison Depending on signal circuit；Port 3D20,3D13 of the normally opened contact K2-1 of relay K2 and microcomputer protecting device are connected in series, are connected to 24V first controls the both ends of the power supply air switch 2DK of power supply, for judging that SF6 air pressure is low；Then pass through microcomputer protecting device Port 2D7,2D8 export SF6 air pressure low signal to relay K8, while recording and showing the low event of SF6 air pressure, with a group cyclization The low monitoring signal circuit of net cabinet SF6 air pressure；It is connected in series, is connected to by port 2D7,2D8 and relay K8 of microcomputer protecting device 24V second controls the both ends of the power supply air switch 1DK of power supply, forms ring network cabinet fault monitoring signal circuit；By low SF6 air pressure Signal contact (the normally-closed contact K2-2 of relay K2), ring network cabinet fault-signal contact (the normally-closed contact K8-1 of relay K8), And protective device power supply air switch (the auxiliary switch contact 2DK-1 of power supply air switch 2DK) forms ring network cabinet fault monitoring Circuit；Pass through port -420-08-X1.15, -420-08-X1.19 and air-blower control the screen heavy duty of ring network cabinet heavy-duty connector X1 Port -420-02-X1.15,-the 420-02-X1.19 correspondence of connector X1 ' is connected, and composition air-blower control screen is to ring network cabinet event Hinder monitoring circuit, so as to enhance wind-powered electricity generation system for coherent signal simultaneous transmission to microcomputer protecting device and air-blower control screen The reliability of system effectively reduces the generation of misoperation fault.

Detailed description of the invention

Fig. 1 is the system architecture diagram of ring network cabinet, air-blower control screen and blower in the prior art；

Fig. 2 is the circuit diagram of the present embodiment one；

Fig. 3 is the ring network cabinet fault monitoring logic chart of the present embodiment one；

Fig. 4 is the system architecture diagram of the present embodiment three.

The toponym that each number designation is referred in the figures above is as follows: 1n, microcomputer protecting device；2, indicating unit； 3, control module；4, wireless transmitter module；5, wireless receiving module；6, director server；7, local device.

Specific embodiment

Present invention is further described in detail with embodiment with reference to the accompanying drawing.