CN214205079U - A control system for dealing with emergency failure of generators - Google Patents
A control system for dealing with emergency failure of generators Download PDFInfo
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- CN214205079U CN214205079U CN202023097740.1U CN202023097740U CN214205079U CN 214205079 U CN214205079 U CN 214205079U CN 202023097740 U CN202023097740 U CN 202023097740U CN 214205079 U CN214205079 U CN 214205079U
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Abstract
本实用新型公开了一种处理发电机紧急故障保电控制系统，包括发电机、供电母线、具有断电检测功能并在断电后切换工作模式的储能装置，发电机、储能装置均接入供电母线，外部负载接入供电母线。在工程现场使用发电机持续为外部负载供电时，采用该处理发电机紧急故障保电控制系统，在发电机供电出现故障时储能装置迅速从PQ模式切换成VSG模式，为外部负载供电，实现供电不间断，保证工程现场的负载持续稳定运行，且系统线路简单，用户使用过程中维护成本低。当外部负载的实时用电功率大于发电机防逆流功率值时，由储能装置补充发电机供电缺额，如此减少发电机过载故障，提高发电机工作稳定性。
The utility model discloses a power protection control system for dealing with an emergency failure of a generator, comprising a generator, a power supply bus, an energy storage device with a power failure detection function and switching working modes after the power failure. The generator and the energy storage device are connected to each other. The external load is connected to the power supply bus, and the external load is connected to the power supply bus. When the generator is used on the project site to continuously supply power to the external load, the power-saving control system for dealing with the emergency failure of the generator is adopted. The power supply is uninterrupted, ensuring the continuous and stable operation of the load on the project site, and the system circuit is simple, and the maintenance cost is low during the user's use. When the real-time power consumption of the external load is greater than the generator’s anti-reverse flow power value, the energy storage device will supplement the generator’s power supply shortage, thus reducing the generator’s overload failure and improving the generator’s working stability.
Description
Technical Field
The utility model belongs to the technical field of the power, in particular to handle generator emergency failure guarantor's electric control system.
Background
The dependence of modern society on electric power is increasing day by day, generally need to use electric power to supply power for various loads on the scene in the engineering scene, mostly use diesel generator to continuously provide electric power in the engineering scene at present. In the long-term use generator process, in case the generator breaks down and can shut down immediately, lead to the power consumption scene to have a power failure, and maintenance generator or change generator all need time, and user experience is poor, influences the engineering progress.
In the prior art, in order to solve the problem, an energy storage device and an STS device are added in a power supply system of a generator, when the generator fails, the STS device switches the power supply of the generator to the power supply of the energy storage device, and when the generator which can normally work is connected into the power supply system, the STS device switches the power supply of the energy storage device back to the power supply of the generator. However, when the STS device is used to switch the power supply mode, the STS device is complicated in wiring in the power supply system, which results in high cost and troublesome maintenance, and therefore, the mode of adding the energy storage device and the STS device in the power supply system is not widely accepted when the generator is used to generate power in the engineering site.
In conclusion, how to use a simple power supply system to enable the generator to supply power in time when the power supply fails to ensure the continuous and stable operation of the engineering field load is a technical problem that needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
In order to solve the above problem, an object of the utility model is to provide a handle generator emergency failure power protection control system can make energy memory switch into the VSG mode from PQ mode rapidly when the generator power supply breaks down, for the power supply of external load, realizes that the power supply is incessant, guarantees that the on-the-spot load of engineering lasts steady operation, and the system circuit is simple, and the maintenance cost is low in the user's use.
Another object of the utility model is to provide a handle generator emergency failure guarantor's electric control system, when external load's real-time power consumption is greater than the generator and prevents against current power value, supply the generator power supply shortage by energy memory, so reduce the generator overload trouble, improve generator job stabilization nature.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a handle generator emergency failure guarantor's electric control system, including generator, power supply generating line, have the outage and detect the function and switch mode's energy memory after the outage, generator, energy memory all insert the power supply generating line, and external load inserts the power supply generating line. When the generator is used for continuously supplying power to an external load on an engineering site, the emergency fault power-saving control system for the generator is adopted, when the generator supplies power to the external load, the energy storage device continuously keeps a low-current discharging standby state, and when the generator is in fault shutdown, the energy storage device can be rapidly switched into a VSG mode from a PQ mode to supply power to the external load. The performance that energy memory can react fast, in time supply power at this moment make full use of for seamless switching when the generator suddenly cuts off the confession, for the urgent power supply of external load, realize that the power supply is incessant, guarantee that the load of engineering scene lasts steady operation.
In order to improve the stability of the generator and reduce the fault condition of the generator caused by overload, the maintenance frequency of the generator is reduced, the maintenance cost of a user in the use process is reduced, and the generator is matched with the energy storage device to implement the anti-reflux operation. The method specifically comprises the following steps: the anti-reflux power value of the generator is set to be about 60% of the rated power, and when the real-time power utilization power of the external load is larger than the anti-reflux power value of the generator, the energy storage device supplements the power supply shortage of the generator, so that the overload faults of the generator are reduced, and the working stability of the generator is improved. The discharge power of the energy storage device, the output power of the generator and the power consumption power of the external load are in dynamic balance, and the formula is satisfied: p is Q + E, P represents the external load power, Q represents the energy storage device discharge power, and E represents the generator output power. The power protection control system for processing the emergency fault of the generator has simple circuit and low maintenance cost in the use process of a user.
Furthermore, the energy storage device comprises a storage battery, an energy converter, an energy controller and a control box, wherein the storage battery is connected with the energy converter, the energy converter is interactive with the control box, the control box is interactive with the energy controller, and the control box is connected to a power supply bus. The control box collects real-time power consumption power of an external load, real-time output power of the generator, real-time discharge power of the storage battery and fault signals of the generator. The energy converter is used for switching the charging and discharging state of the storage battery and controlling the storage battery to be charged or discharged timely. The energy controller reads the acquired data of the control box. When the real-time power consumption of the external load is larger than the set anti-backflow power value of the generator, the energy controller calculates the shortage of the real-time power consumption of the generator relative to the external load when the output power of the generator is the anti-backflow power value, the anti-backflow operation is controlled to be started, the shortage in the anti-backflow operation is used as the target discharge power value of the storage battery and is transmitted to the control box, the control box controls the energy converter, the energy converter controls the storage battery to discharge according to the target discharge power value, therefore, the real-time output power of the generator is kept near the anti-backflow power value, the generator works in the optimal power state, and the stability of the generator is improved. The control box monitors the change of the output power of the generator in real time, and when the output power of the generator is larger than the anti-backflow power value, the energy controller re-determines the shortage and modifies the anti-backflow operation. When the real-time power consumption of the external load is smaller than the set power value of the generator against the current, the energy controller starts the generator to charge the energy storage device, specifically comprising the following steps: the energy controller transmits a corresponding instruction to the control box, the control box controls the energy converter to enable the storage battery to be in a charging state, and at the moment, when the generator takes the reverse flow prevention power value as output power, the storage battery is charged when real-time electricity power of an external load is supplied. After the storage battery is fully charged, the low-current discharge standby state is maintained, and the shortage of the power supply of the generator is prepared to be supplemented at any time. When the generator is in fault shutdown, the power supply of the generator is disconnected instantly, the control box detects the power failure change of the generator, namely the control box receives a generator fault signal, and the control box controls the energy converter to be switched from the PQ mode to the VSG mode rapidly to supply power to an external load.
Further, the system also comprises a generator controller, the generator controller is arranged between the generator and the power supply bus, and the generator controller is interacted with the control box. When the generator is in fault and suddenly stops, the generator controller transmits a fault signal of the generator to the control box, the control box controls the energy converter to be rapidly switched into the VSG mode from the PQ mode, and the energy storage device independently supplies power for the external load to drive the external load, so that uninterrupted power supply is realized.
The utility model has the advantages that: compared with the prior art, the utility model discloses in the middle of, this processing generator emergency failure guarantor electric control system is from PQ mode switching into VSG mode rapidly when the generator power supply breaks down, for the external load power supply, realizes that the power supply is incessant, guarantees the on-the-spot load of engineering and lasts steady operation, and the system circuit is simple, and the maintenance cost is low in the user's use. When the real-time power utilization power of the external load is larger than the anti-reflux power value of the generator, the energy storage device supplements the power supply shortage of the generator, so that the overload fault of the generator is reduced, and the working stability of the generator is improved.
Drawings
Fig. 1 is a block diagram of the present invention.
In the figure, DO1 represents a generator controller opening synchronous dry node, and ETH represents ethernet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
referring to fig. 1, the utility model provides a handle generator emergency failure guarantor's electric control system, including generator, generator controller, power supply bus L1, energy memory, generator, energy memory all insert power supply bus L1, and external load inserts power supply bus L1. The generator controller is disposed between the generator and the supply bus L1, the generator controller interacting with the control box.
The energy storage device comprises a storage battery, an energy converter, an energy controller and a control box, wherein the storage battery is connected with the energy converter, the energy converter is interactive with the control box, the control box is interactive with the energy controller, and the control box is connected to a power supply bus L1. The control box collects real-time power consumption power of an external load, real-time output power of the generator, real-time discharge power of the storage battery and fault signals of the generator. The energy converter is used for switching the charging and discharging state of the storage battery and controlling the storage battery to be charged or discharged timely. The energy controller reads the acquired data of the control box.
When the generator is in fault and suddenly stops, the generator controller transmits a fault signal of power failure of the generator to the control box, the control box receives the fault signal and then controls the energy converter to be rapidly switched from the PQ mode to the VSG mode, and the energy storage device independently supplies power for the external load to drive the external load and realize uninterrupted power supply.
When the generator is used for continuously supplying power to an external load on an engineering site, the emergency fault power-saving control system for the generator is adopted, when the generator supplies power to the external load, the energy storage device continuously keeps a low-current discharging standby state, when the generator is in fault and is suddenly stopped, the generator controller transmits a fault signal to the energy storage device, and the energy storage device can be rapidly switched into a VSG mode from a PQ mode and independently supplies power to the external load. The performance that energy memory can react fast, in time supply power at this moment make full use of for seamless switching when the generator suddenly cuts off the confession, for the urgent power supply of external load, realize that the power supply is incessant, guarantee that the load of engineering scene lasts steady operation.
In order to improve the stability of the generator and reduce the fault condition of the generator caused by overload, the maintenance frequency of the generator is reduced, the maintenance cost of a user in the use process is reduced, and the generator is matched with the energy storage device to implement the anti-reflux operation. The method specifically comprises the following steps: the anti-reflux power value of the generator is set to be about 60% of the rated power, and when the real-time power utilization power of the external load is larger than the anti-reflux power value of the generator, the energy storage device supplements the power supply shortage of the generator, so that the overload faults of the generator are reduced, and the working stability of the generator is improved. The discharge power of the energy storage device, the output power of the generator and the power consumption power of the external load are in dynamic balance, and the formula is satisfied: p is Q + E, P represents the external load power, Q represents the energy storage device discharge power, and E represents the generator output power. The power protection control system for processing the emergency fault of the generator has simple circuit and low maintenance cost in the use process of a user.
When the real-time power consumption of the external load is larger than the set anti-backflow power value of the generator, the energy controller calculates the shortage of the real-time power consumption of the generator relative to the external load when the output power of the generator is the anti-backflow power value, the anti-backflow operation is controlled to be started, the shortage in the anti-backflow operation is used as the target discharge power value of the storage battery and is transmitted to the control box, the control box controls the energy converter, the energy converter controls the storage battery to discharge according to the target discharge power value, therefore, the real-time output power of the generator is kept near the anti-backflow power value, the generator works in the optimal power state, and the stability of the generator is improved. The control box monitors the change of the output power of the generator in real time, and when the output power of the generator is larger than the anti-backflow power value, the energy controller re-determines the shortage and modifies the anti-backflow operation.
When the real-time power consumption of the external load is smaller than the set power value of the generator against the current, the energy controller starts the generator to charge the energy storage device, specifically comprising the following steps: the energy controller transmits a corresponding instruction to the control box, the control box controls the energy converter to enable the storage battery to be in a charging state, and at the moment, when the generator takes the reverse flow prevention power value as output power, the storage battery is charged when real-time electricity power of an external load is supplied. After the storage battery is fully charged, the low-current discharge standby state is maintained, and the shortage of the power supply of the generator is prepared to be supplemented at any time.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
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| CN202023097740.1U CN214205079U (en) | 2020-12-21 | 2020-12-21 | A control system for dealing with emergency failure of generators |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541207A (en) * | 2021-09-16 | 2021-10-22 | 深圳市聚能优电科技有限公司 | Dual power supply switching method, system, device and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541207A (en) * | 2021-09-16 | 2021-10-22 | 深圳市聚能优电科技有限公司 | Dual power supply switching method, system, device and storage medium |
| CN113541207B (en) * | 2021-09-16 | 2021-11-23 | 深圳市聚能优电科技有限公司 | Dual power supply switching method, system, device and storage medium |
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