The demand of social economy for power energy is increasing. In this process, the traditional operation and management mode of power grid substation has been difficult to meet the power demand of modern society and th...The demand of social economy for power energy is increasing. In this process, the traditional operation and management mode of power grid substation has been difficult to meet the power demand of modern society and the development needs of related enterprises. In this case, it is necessary to combine the actual situation of modern geographic network operation, strengthen the application of modern information technology in substation operation management, and establish a modern power grid substation operation management mode. Relevant management modes need to be able to effectively make up for the shortcomings of traditional management modes and further improve the security and stability of power network operation. At the same time, how to build a modern power grid operation and management mode is also the focus of major power enterprises.展开更多
With the increasing scale and complexity of the incoming telegram network in our country in recent years, there are more and more related electrical equipment involved. However, if there is a mistake in operation, it ...With the increasing scale and complexity of the incoming telegram network in our country in recent years, there are more and more related electrical equipment involved. However, if there is a mistake in operation, it will cause a huge impact. Therefore, we need to find out the source of the problem of operational errors, so as to avoid the occurrence of such incidents in future operations and improve our countrys technical operation in the power grid. Only in this way can the development of the power grid become more and more safe, and some unnecessary accidents can be reduced in the operation of substation operation and maintenance. In this paper, the measures for misoperation of substation operation and maintenance are discussed correspondingly. Combined with relevant practical experience, a series of suggestions and methods on how to improve the prevention of misoperation of substation operation and maintenance in the future are put forward.展开更多
The operation and maintenance of substation is highly technical, involving more operation and maintenance management equipment, covering a wide range of fields, and is easily affected by the external natural environme...The operation and maintenance of substation is highly technical, involving more operation and maintenance management equipment, covering a wide range of fields, and is easily affected by the external natural environment in the actual operation and maintenance process, which easily leads to a variety of dangerous points in the operation and maintenance process of substation. Once these dangerous points occur, it will not only affect the normal operation of substation power system and shorten the service life of substation equipment. At the same time, it also poses a serious threat to the personal safety of operation and maintenance personnel. Therefore, it is necessary to actively explore effective countermeasures to prevent the occurrence of these dangerous points, so as to ensure the personal safety of operation and maintenance personnel and promote the smooth operation of substation power system.展开更多
As we all know, substation operation requires knowledge of different disciplines. In order to ensure the safety of substation operation and improve its operation efficiency, the negligence of details will cause seriou...As we all know, substation operation requires knowledge of different disciplines. In order to ensure the safety of substation operation and improve its operation efficiency, the negligence of details will cause serious potential safety hazards in a specific environment or at a specific time, which may lead to safety accidents. In order to improve the overall efficiency and quality of substation operation, the overcurrent protection in complex voltage direction of Substation operation is briefly discussed.展开更多
As the improvement of district heating systems,the fine-tuning of operational equipment has become a promising direction.However,in the practical district heating systems,relying solely on manual control and the exist...As the improvement of district heating systems,the fine-tuning of operational equipment has become a promising direction.However,in the practical district heating systems,relying solely on manual control and the existing basic models,the dynamic hydraulic-thermal process is hard to cover.Consequently,the primary side control in the current district heating system mainly results in the over or under-supply of heating substations.This article constructs a dynamic hydraulic-thermal model and performs a balanced operation strategies optimization based on the hydraulic-thermal model.The linearization and iterative optimization process are adopted to simplify the hydraulic and thermal modeling for the single pipe,and the hydraulic and thermal calculation are conducted sequentially.For the primary side network in the various operation conditions,the dynamic hydraulic-thermal model is established.The heating supply imbalance of the primary side return temperatures among different heating substations is defined and optimized based on the dynamic hydraulic-thermal model and the particle swarm optimization algorithm.In the case analysis,the results of heating supply imbalance before and after optimization are 0.81 K and 0.47 K,respectively,with a 42.0%reduction in heating imbalances after optimization.The proposed method could contribute to the fine-tuning of heating substations and the reduction of energy waste due to the imbalanced heating supply,which is significant for the operation strategies of district heating systems.展开更多
文摘The demand of social economy for power energy is increasing. In this process, the traditional operation and management mode of power grid substation has been difficult to meet the power demand of modern society and the development needs of related enterprises. In this case, it is necessary to combine the actual situation of modern geographic network operation, strengthen the application of modern information technology in substation operation management, and establish a modern power grid substation operation management mode. Relevant management modes need to be able to effectively make up for the shortcomings of traditional management modes and further improve the security and stability of power network operation. At the same time, how to build a modern power grid operation and management mode is also the focus of major power enterprises.
文摘With the increasing scale and complexity of the incoming telegram network in our country in recent years, there are more and more related electrical equipment involved. However, if there is a mistake in operation, it will cause a huge impact. Therefore, we need to find out the source of the problem of operational errors, so as to avoid the occurrence of such incidents in future operations and improve our countrys technical operation in the power grid. Only in this way can the development of the power grid become more and more safe, and some unnecessary accidents can be reduced in the operation of substation operation and maintenance. In this paper, the measures for misoperation of substation operation and maintenance are discussed correspondingly. Combined with relevant practical experience, a series of suggestions and methods on how to improve the prevention of misoperation of substation operation and maintenance in the future are put forward.
文摘The operation and maintenance of substation is highly technical, involving more operation and maintenance management equipment, covering a wide range of fields, and is easily affected by the external natural environment in the actual operation and maintenance process, which easily leads to a variety of dangerous points in the operation and maintenance process of substation. Once these dangerous points occur, it will not only affect the normal operation of substation power system and shorten the service life of substation equipment. At the same time, it also poses a serious threat to the personal safety of operation and maintenance personnel. Therefore, it is necessary to actively explore effective countermeasures to prevent the occurrence of these dangerous points, so as to ensure the personal safety of operation and maintenance personnel and promote the smooth operation of substation power system.
文摘As we all know, substation operation requires knowledge of different disciplines. In order to ensure the safety of substation operation and improve its operation efficiency, the negligence of details will cause serious potential safety hazards in a specific environment or at a specific time, which may lead to safety accidents. In order to improve the overall efficiency and quality of substation operation, the overcurrent protection in complex voltage direction of Substation operation is briefly discussed.
基金supported by National Natural Science Foundation of China(Grant No.51806190)supported by National Key R&D Program of China(Grant No.2023YFE0108600).
文摘As the improvement of district heating systems,the fine-tuning of operational equipment has become a promising direction.However,in the practical district heating systems,relying solely on manual control and the existing basic models,the dynamic hydraulic-thermal process is hard to cover.Consequently,the primary side control in the current district heating system mainly results in the over or under-supply of heating substations.This article constructs a dynamic hydraulic-thermal model and performs a balanced operation strategies optimization based on the hydraulic-thermal model.The linearization and iterative optimization process are adopted to simplify the hydraulic and thermal modeling for the single pipe,and the hydraulic and thermal calculation are conducted sequentially.For the primary side network in the various operation conditions,the dynamic hydraulic-thermal model is established.The heating supply imbalance of the primary side return temperatures among different heating substations is defined and optimized based on the dynamic hydraulic-thermal model and the particle swarm optimization algorithm.In the case analysis,the results of heating supply imbalance before and after optimization are 0.81 K and 0.47 K,respectively,with a 42.0%reduction in heating imbalances after optimization.The proposed method could contribute to the fine-tuning of heating substations and the reduction of energy waste due to the imbalanced heating supply,which is significant for the operation strategies of district heating systems.
